diff --git a/glfw/backend_utils.c b/glfw/backend_utils.c
index 508cdea62..afae54c38 100644
--- a/glfw/backend_utils.c
+++ b/glfw/backend_utils.c
@@ -220,7 +220,7 @@ dispatchTimers(EventLoopData *eld) {
 }
 
 static void
-drain_wakeup_fd(int fd, int events, void* data) {
+drain_wakeup_fd(int fd, int events UNUSED, void* data UNUSED) {
     static char drain_buf[64];
     while(read(fd, drain_buf, sizeof(drain_buf)) < 0 && errno == EINTR);
 }
diff --git a/glfw/cocoa_init.m b/glfw/cocoa_init.m
index d2537a40b..e39559ecb 100644
--- a/glfw/cocoa_init.m
+++ b/glfw/cocoa_init.m
@@ -247,13 +247,13 @@ static bool initializeTIS(void)
     CFStringRef* kPropertyUnicodeKeyLayoutData =
         CFBundleGetDataPointerForName(_glfw.ns.tis.bundle,
                                       CFSTR("kTISPropertyUnicodeKeyLayoutData"));
-    _glfw.ns.tis.CopyCurrentKeyboardLayoutInputSource =
+    *(void **)&_glfw.ns.tis.CopyCurrentKeyboardLayoutInputSource =
         CFBundleGetFunctionPointerForName(_glfw.ns.tis.bundle,
                                           CFSTR("TISCopyCurrentKeyboardLayoutInputSource"));
-    _glfw.ns.tis.GetInputSourceProperty =
+    *(void **)&_glfw.ns.tis.GetInputSourceProperty =
         CFBundleGetFunctionPointerForName(_glfw.ns.tis.bundle,
                                           CFSTR("TISGetInputSourceProperty"));
-    _glfw.ns.tis.GetKbdType =
+    *(void **)&_glfw.ns.tis.GetKbdType =
         CFBundleGetFunctionPointerForName(_glfw.ns.tis.bundle,
                                           CFSTR("LMGetKbdType"));
 
@@ -280,11 +280,13 @@ static bool initializeTIS(void)
 
 - (void)selectedKeyboardInputSourceChanged:(NSObject* )object
 {
+    (void)object;
     updateUnicodeDataNS();
 }
 
 - (void)doNothing:(id)object
 {
+    (void)object;
 }
 
 @end // GLFWHelper
diff --git a/glfw/cocoa_joystick.m b/glfw/cocoa_joystick.m
index d27bca3d9..4a6b8fe9c 100644
--- a/glfw/cocoa_joystick.m
+++ b/glfw/cocoa_joystick.m
@@ -75,7 +75,7 @@ static long getElementValue(_GLFWjoystick* js, _GLFWjoyelementNS* element)
 //
 static CFComparisonResult compareElements(const void* fp,
                                           const void* sp,
-                                          void* user)
+                                          void* user UNUSED)
 {
     const _GLFWjoyelementNS* fe = fp;
     const _GLFWjoyelementNS* se = sp;
@@ -117,9 +117,9 @@ static void closeJoystick(_GLFWjoystick* js)
 
 // Callback for user-initiated joystick addition
 //
-static void matchCallback(void* context,
-                          IOReturn result,
-                          void* sender,
+static void matchCallback(void* context UNUSED,
+                          IOReturn result UNUSED,
+                          void* sender UNUSED,
                           IOHIDDeviceRef device)
 {
     int jid;
@@ -270,9 +270,9 @@ static void matchCallback(void* context,
 
 // Callback for user-initiated joystick removal
 //
-static void removeCallback(void* context,
-                           IOReturn result,
-                           void* sender,
+static void removeCallback(void* context UNUSED,
+                           IOReturn result UNUSED,
+                           void* sender UNUSED,
                            IOHIDDeviceRef device)
 {
     int jid;
@@ -316,7 +316,7 @@ void _glfwInitJoysticksNS(void)
         return;
     }
 
-    for (int i = 0;  i < sizeof(usages) / sizeof(long);  i++)
+    for (size_t i = 0;  i < sizeof(usages) / sizeof(long);  i++)
     {
         const long page = kHIDPage_GenericDesktop;
 
diff --git a/glfw/cocoa_monitor.m b/glfw/cocoa_monitor.m
index 7dca4129d..3ddde7002 100644
--- a/glfw/cocoa_monitor.m
+++ b/glfw/cocoa_monitor.m
@@ -256,9 +256,9 @@ void _glfwClearDisplayLinks() {
 }
 
 static CVReturn displayLinkCallback(
-        CVDisplayLinkRef displayLink,
-        const CVTimeStamp* now, const CVTimeStamp* outputTime,
-        CVOptionFlags flagsIn, CVOptionFlags* flagsOut, void* userInfo)
+        CVDisplayLinkRef displayLink UNUSED,
+        const CVTimeStamp* now UNUSED, const CVTimeStamp* outputTime UNUSED,
+        CVOptionFlags flagsIn UNUSED, CVOptionFlags* flagsOut UNUSED, void* userInfo)
 {
     CGDirectDisplayID displayID = (CGDirectDisplayID)userInfo;
     [_glfw.ns.displayLinks.lock lock];
@@ -306,7 +306,7 @@ void _glfwPollMonitorsNS(void)
     CGGetOnlineDisplayList(displayCount, displays, &displayCount);
     _glfwClearDisplayLinks();
 
-    for (uint32_t i = 0;  i < _glfw.monitorCount;  i++)
+    for (int i = 0;  i < _glfw.monitorCount;  i++)
         _glfw.monitors[i]->ns.screen = nil;
 
     _GLFWmonitor** disconnected = NULL;
@@ -430,7 +430,7 @@ void _glfwRestoreVideoModeNS(_GLFWmonitor* monitor)
 //////                       GLFW platform API                      //////
 //////////////////////////////////////////////////////////////////////////
 
-void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor)
+void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor UNUSED)
 {
 }
 
@@ -559,7 +559,7 @@ void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
 {
     CGGammaValue* values = calloc(ramp->size * 3, sizeof(CGGammaValue));
 
-    for (int i = 0;  i < ramp->size;  i++)
+    for (unsigned int i = 0;  i < ramp->size;  i++)
     {
         values[i]                  = ramp->red[i] / 65535.f;
         values[i + ramp->size]     = ramp->green[i] / 65535.f;
diff --git a/glfw/cocoa_window.m b/glfw/cocoa_window.m
index c6c214942..26756e5b3 100644
--- a/glfw/cocoa_window.m
+++ b/glfw/cocoa_window.m
@@ -66,7 +66,7 @@ static unsigned long long display_link_shutdown_timer = 0;
 #define DISPLAY_LINK_SHUTDOWN_CHECK_INTERVAL 30
 
 void
-_glfwShutdownCVDisplayLink(unsigned long long timer_id, void *user_data) {
+_glfwShutdownCVDisplayLink(unsigned long long timer_id UNUSED, void *user_data UNUSED) {
     [_glfw.ns.displayLinks.lock lock];
     display_link_shutdown_timer = 0;
     for (size_t i = 0; i < _glfw.ns.displayLinks.count; i++) {
@@ -125,7 +125,7 @@ static bool cursorInContentArea(_GLFWwindow* window)
 
 // Hides the cursor if not already hidden
 //
-static void hideCursor(_GLFWwindow* window)
+static void hideCursor(_GLFWwindow* window UNUSED)
 {
     if (!_glfw.ns.cursorHidden)
     {
@@ -136,7 +136,7 @@ static void hideCursor(_GLFWwindow* window)
 
 // Shows the cursor if not already shown
 //
-static void showCursor(_GLFWwindow* window)
+static void showCursor(_GLFWwindow* window UNUSED)
 {
     if (_glfw.ns.cursorHidden)
     {
@@ -350,9 +350,8 @@ static int translateKey(unsigned int key, bool apply_keymap)
 }
 
 static void
-display_reconfigured(CGDirectDisplayID display, CGDisplayChangeSummaryFlags flags, void *userInfo)
+display_reconfigured(CGDirectDisplayID display UNUSED, CGDisplayChangeSummaryFlags flags, void *userInfo UNUSED)
 {
-    (void)(userInfo); (void)(display); (void)(flags);
     if (flags & kCGDisplayBeginConfigurationFlag) {
         return;
     }
@@ -417,12 +416,14 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (BOOL)windowShouldClose:(id)sender
 {
+    (void)sender;
     _glfwInputWindowCloseRequest(window);
     return NO;
 }
 
 - (void)windowDidResize:(NSNotification *)notification
 {
+    (void)notification;
     if (window->context.client != GLFW_NO_API)
         [window->context.nsgl.object update];
 
@@ -458,6 +459,7 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (void)windowDidMove:(NSNotification *)notification
 {
+    (void)notification;
     if (window->context.client != GLFW_NO_API)
         [window->context.nsgl.object update];
 
@@ -471,11 +473,13 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (void)windowDidChangeOcclusionState:(NSNotification *)notification
 {
+    (void)notification;
     _glfwInputWindowOcclusion(window, !([window->ns.object occlusionState] & NSWindowOcclusionStateVisible));
 }
 
 - (void)windowDidMiniaturize:(NSNotification *)notification
 {
+    (void)notification;
     if (window->monitor)
         releaseMonitor(window);
 
@@ -484,6 +488,7 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (void)windowDidDeminiaturize:(NSNotification *)notification
 {
+    (void)notification;
     if (window->monitor)
         acquireMonitor(window);
 
@@ -492,6 +497,7 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (void)windowDidBecomeKey:(NSNotification *)notification
 {
+    (void)notification;
     if (_glfw.ns.disabledCursorWindow == window)
         _glfwCenterCursorInContentArea(window);
 
@@ -508,6 +514,7 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (void)windowDidResignKey:(NSNotification *)notification
 {
+    (void)notification;
     if (window->monitor && window->autoIconify)
         _glfwPlatformIconifyWindow(window);
     showCursor(window);
@@ -517,6 +524,7 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (void)windowDidChangeScreen:(NSNotification *)notification
 {
+    (void)notification;
     if (window->ns.renderFrameRequested && window->ns.renderFrameCallback) {
         // Ensure that if the window changed its monitor, CVDisplayLink
         // is running for the new monitor
@@ -539,6 +547,7 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
 
 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
 {
+    (void)sender;
     _GLFWwindow* window;
 
     for (window = _glfw.windowListHead;  window;  window = window->next)
@@ -551,6 +560,7 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (BOOL)applicationShouldHandleReopen:(NSApplication *)sender hasVisibleWindows:(BOOL)flag
 {
+    (void)sender;
     if (!handle_reopen_callback) return YES;
     if (handle_reopen_callback(flag)) return YES;
     return NO;
@@ -558,6 +568,7 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (void)applicationDidChangeScreenParameters:(NSNotification *) notification
 {
+    (void)notification;
     _GLFWwindow* window;
 
     for (window = _glfw.windowListHead;  window;  window = window->next)
@@ -571,6 +582,7 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (void)applicationDidFinishLaunching:(NSNotification *)notification
 {
+    (void)notification;
     [NSApp stop:nil];
 
     CGDisplayRegisterReconfigurationCallback(display_reconfigured, NULL);
@@ -579,11 +591,13 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (void)applicationWillTerminate:(NSNotification *)aNotification
 {
+    (void)aNotification;
     CGDisplayRemoveReconfigurationCallback(display_reconfigured, NULL);
 }
 
 - (void)applicationDidHide:(NSNotification *)notification
 {
+    (void)notification;
     int i;
 
     for (i = 0;  i < _glfw.monitorCount;  i++)
@@ -686,11 +700,13 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (void)cursorUpdate:(NSEvent *)event
 {
+    (void)event;
     updateCursorImage(window);
 }
 
 - (BOOL)acceptsFirstMouse:(NSEvent *)event
 {
+    (void)event;
     return NO;  // changed by Kovid, to follow cocoa platform conventions
 }
 
@@ -783,11 +799,13 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (void)mouseExited:(NSEvent *)event
 {
+    (void)event;
     _glfwInputCursorEnter(window, false);
 }
 
 - (void)mouseEntered:(NSEvent *)event
 {
+    (void)event;
     _glfwInputCursorEnter(window, true);
 }
 
@@ -820,6 +838,7 @@ static GLFWapplicationshouldhandlereopenfun handle_reopen_callback = NULL;
 
 - (void)drawRect:(NSRect)rect
 {
+    (void)rect;
     _glfwInputWindowDamage(window);
 }
 
@@ -1026,6 +1045,7 @@ is_ascii_control_char(char x) {
 
 - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
 {
+    (void)sender;
     // HACK: We don't know what to say here because we don't know what the
     //       application wants to do with the paths
     return NSDragOperationGeneric;
@@ -1083,6 +1103,7 @@ is_ascii_control_char(char x) {
         selectedRange:(NSRange)selectedRange
      replacementRange:(NSRange)replacementRange
 {
+    (void)selectedRange; (void)replacementRange;
     [markedText release];
     if ([string isKindOfClass:[NSAttributedString class]])
         markedText = [[NSMutableAttributedString alloc] initWithAttributedString:string];
@@ -1105,6 +1126,7 @@ void _glfwPlatformUpdateIMEState(_GLFWwindow *w, int which, int a, int b, int c,
                 cellWidth:(CGFloat)cellWidth
                cellHeight:(CGFloat)cellHeight
 {
+    (void) which;
     left /= window->ns.xscale;
     top /= window->ns.yscale;
     cellWidth /= window->ns.xscale;
@@ -1125,22 +1147,26 @@ void _glfwPlatformUpdateIMEState(_GLFWwindow *w, int which, int a, int b, int c,
 - (NSAttributedString*)attributedSubstringForProposedRange:(NSRange)range
                                                actualRange:(NSRangePointer)actualRange
 {
+    (void)range; (void)actualRange;
     return nil;
 }
 
 - (NSUInteger)characterIndexForPoint:(NSPoint)point
 {
+    (void)point;
     return 0;
 }
 
 - (NSRect)firstRectForCharacterRange:(NSRange)range
                          actualRange:(NSRangePointer)actualRange
 {
+    (void)range; (void)actualRange;
     return markedRect;
 }
 
 - (void)insertText:(id)string replacementRange:(NSRange)replacementRange
 {
+    (void)replacementRange;
     NSString* characters;
     if ([string isKindOfClass:[NSAttributedString class]])
         characters = [string string];
@@ -1154,6 +1180,7 @@ void _glfwPlatformUpdateIMEState(_GLFWwindow *w, int which, int a, int b, int c,
 
 - (void)doCommandBySelector:(SEL)selector
 {
+    (void)selector;
 }
 
 @end
@@ -1510,7 +1537,7 @@ void _glfwPlatformDestroyWindow(_GLFWwindow* window)
     window->ns.object = nil;
 }
 
-void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char *title)
+void _glfwPlatformSetWindowTitle(_GLFWwindow* window UNUSED, const char *title)
 {
     NSString* string = @(title);
     [window->ns.object setTitle:string];
@@ -1519,8 +1546,8 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char *title)
     [window->ns.object setMiniwindowTitle:string];
 }
 
-void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
-                                int count, const GLFWimage* images)
+void _glfwPlatformSetWindowIcon(_GLFWwindow* window UNUSED,
+                                int count UNUSED, const GLFWimage* images UNUSED)
 {
     // Regular windows do not have icons
 }
@@ -1630,7 +1657,7 @@ void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
         *yscale = (float) (pixels.size.height / points.size.height);
 }
 
-double _glfwPlatformGetDoubleClickInterval(_GLFWwindow* window)
+double _glfwPlatformGetDoubleClickInterval(_GLFWwindow* window UNUSED)
 {
     return [NSEvent doubleClickInterval];
 }
@@ -1664,12 +1691,12 @@ void _glfwPlatformHideWindow(_GLFWwindow* window)
     [window->ns.object orderOut:nil];
 }
 
-void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
+void _glfwPlatformRequestWindowAttention(_GLFWwindow* window UNUSED)
 {
     [NSApp requestUserAttention:NSInformationalRequest];
 }
 
-int _glfwPlatformWindowBell(_GLFWwindow* window)
+int _glfwPlatformWindowBell(_GLFWwindow* window UNUSED)
 {
     NSBeep();
     return true;
@@ -1689,7 +1716,7 @@ void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
                                    _GLFWmonitor* monitor,
                                    int xpos, int ypos,
                                    int width, int height,
-                                   int refreshRate)
+                                   int refreshRate UNUSED)
 {
     if (window->monitor == monitor)
     {
@@ -1814,12 +1841,12 @@ int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
     return ![window->ns.object isOpaque] && ![window->ns.view isOpaque];
 }
 
-void _glfwPlatformSetWindowResizable(_GLFWwindow* window, bool enabled)
+void _glfwPlatformSetWindowResizable(_GLFWwindow* window, bool enabled UNUSED)
 {
     [window->ns.object setStyleMask:getStyleMask(window)];
 }
 
-void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, bool enabled)
+void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, bool enabled UNUSED)
 {
     [window->ns.object setStyleMask:getStyleMask(window)];
     [window->ns.object makeFirstResponder:window->ns.view];
@@ -1917,7 +1944,7 @@ void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
     }
 }
 
-void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
+void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode UNUSED)
 {
     if (_glfwPlatformWindowFocused(window))
         updateCursorMode(window);
@@ -2035,7 +2062,7 @@ void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
         [(NSCursor*) cursor->ns.object release];
 }
 
-void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
+void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor UNUSED)
 {
     if (cursorInContentArea(window))
         updateCursorImage(window);
@@ -2105,9 +2132,9 @@ void _glfwPlatformGetRequiredInstanceExtensions(char** extensions)
     extensions[1] = "VK_MVK_macos_surface";
 }
 
-int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance,
-                                                      VkPhysicalDevice device,
-                                                      uint32_t queuefamily)
+int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance UNUSED,
+                                                      VkPhysicalDevice device UNUSED,
+                                                      uint32_t queuefamily UNUSED)
 {
     return true;
 }
@@ -2227,6 +2254,7 @@ GLFWAPI void glfwGetCocoaKeyEquivalent(int glfw_key, int glfw_mods, unsigned sho
     if (glfw_mods & GLFW_MOD_CAPS_LOCK)
         *cocoa_mods |= NSEventModifierFlagCapsLock;
 
+START_ALLOW_CASE_RANGE
     switch(glfw_key) {
 #define K(ch, name) case GLFW_KEY_##name: *cocoa_key = ch; break;
         K('a', A);
@@ -2304,6 +2332,7 @@ GLFWAPI void glfwGetCocoaKeyEquivalent(int glfw_key, int glfw_mods, unsigned sho
         K((unichar)(0x4E|NSEventModifierFlagNumericPad), KP_SUBTRACT);
         K((unichar)(0x51|NSEventModifierFlagNumericPad), KP_EQUAL);
 #undef K
+END_ALLOW_CASE_RANGE
     }
 }
 
diff --git a/glfw/dbus_glfw.c b/glfw/dbus_glfw.c
index ce5718be3..367f89d7a 100644
--- a/glfw/dbus_glfw.c
+++ b/glfw/dbus_glfw.c
@@ -53,7 +53,7 @@ glfw_dbus_init(_GLFWDBUSData *dbus, EventLoopData *eld) {
 }
 
 static void
-on_dbus_watch_ready(int fd, int events, void *data) {
+on_dbus_watch_ready(int fd UNUSED, int events, void *data) {
     DBusWatch *watch = (DBusWatch*)data;
     unsigned int flags = 0;
     if (events & POLLERR) flags |= DBUS_WATCH_ERROR;
@@ -84,19 +84,19 @@ add_dbus_watch(DBusWatch *watch, void *data) {
 }
 
 static void
-remove_dbus_watch(DBusWatch *watch, void *data) {
+remove_dbus_watch(DBusWatch *watch, void *data UNUSED) {
     id_type *idp = dbus_watch_get_data(watch);
     if (idp) removeWatch(dbus_data->eld, *idp);
 }
 
 static void
-toggle_dbus_watch(DBusWatch *watch, void *data) {
+toggle_dbus_watch(DBusWatch *watch, void *data UNUSED) {
     id_type *idp = dbus_watch_get_data(watch);
     if (idp) toggleWatch(dbus_data->eld, *idp, dbus_watch_get_enabled(watch));
 }
 
 static void
-on_dbus_timer_ready(id_type timer_id, void *data) {
+on_dbus_timer_ready(id_type timer_id UNUSED, void *data) {
     if (data) {
         DBusTimeout *t = (DBusTimeout*)data;
         dbus_timeout_handle(t);
@@ -123,13 +123,13 @@ add_dbus_timeout(DBusTimeout *timeout, void *data) {
 }
 
 static void
-remove_dbus_timeout(DBusTimeout *timeout, void *data) {
+remove_dbus_timeout(DBusTimeout *timeout, void *data UNUSED) {
     id_type *idp = dbus_timeout_get_data(timeout);
     if (idp) removeTimer(dbus_data->eld, *idp);
 }
 
 static void
-toggle_dbus_timeout(DBusTimeout *timeout, void *data) {
+toggle_dbus_timeout(DBusTimeout *timeout, void *data UNUSED) {
     id_type *idp = dbus_timeout_get_data(timeout);
     if (idp) toggleTimer(dbus_data->eld, *idp, dbus_timeout_get_enabled(timeout));
 }
@@ -178,7 +178,7 @@ glfw_dbus_session_bus_dispatch() {
 }
 
 void
-glfw_dbus_terminate(_GLFWDBUSData *dbus) {
+glfw_dbus_terminate(_GLFWDBUSData *dbus UNUSED) {
     if (dbus_data) {
         dbus_data->eld = NULL;
         dbus_data = NULL;
diff --git a/glfw/egl_context.c b/glfw/egl_context.c
index 360516e80..c8eef34f9 100644
--- a/glfw/egl_context.c
+++ b/glfw/egl_context.c
@@ -253,8 +253,8 @@ static GLFWglproc getProcAddressEGL(const char* procname)
 
     if (window->context.egl.client)
     {
-        GLFWglproc proc = (GLFWglproc) _glfw_dlsym(window->context.egl.client,
-                                                   procname);
+        GLFWglproc proc = NULL;
+        glfw_dlsym(proc, window->context.egl.client, procname);
         if (proc)
             return proc;
     }
@@ -335,38 +335,22 @@ bool _glfwInitEGL(void)
 
     _glfw.egl.prefix = (strncmp(sonames[i], "lib", 3) == 0);
 
-    _glfw.egl.GetConfigAttrib = (PFN_eglGetConfigAttrib)
-        _glfw_dlsym(_glfw.egl.handle, "eglGetConfigAttrib");
-    _glfw.egl.GetConfigs = (PFN_eglGetConfigs)
-        _glfw_dlsym(_glfw.egl.handle, "eglGetConfigs");
-    _glfw.egl.GetDisplay = (PFN_eglGetDisplay)
-        _glfw_dlsym(_glfw.egl.handle, "eglGetDisplay");
-    _glfw.egl.GetError = (PFN_eglGetError)
-        _glfw_dlsym(_glfw.egl.handle, "eglGetError");
-    _glfw.egl.Initialize = (PFN_eglInitialize)
-        _glfw_dlsym(_glfw.egl.handle, "eglInitialize");
-    _glfw.egl.Terminate = (PFN_eglTerminate)
-        _glfw_dlsym(_glfw.egl.handle, "eglTerminate");
-    _glfw.egl.BindAPI = (PFN_eglBindAPI)
-        _glfw_dlsym(_glfw.egl.handle, "eglBindAPI");
-    _glfw.egl.CreateContext = (PFN_eglCreateContext)
-        _glfw_dlsym(_glfw.egl.handle, "eglCreateContext");
-    _glfw.egl.DestroySurface = (PFN_eglDestroySurface)
-        _glfw_dlsym(_glfw.egl.handle, "eglDestroySurface");
-    _glfw.egl.DestroyContext = (PFN_eglDestroyContext)
-        _glfw_dlsym(_glfw.egl.handle, "eglDestroyContext");
-    _glfw.egl.CreateWindowSurface = (PFN_eglCreateWindowSurface)
-        _glfw_dlsym(_glfw.egl.handle, "eglCreateWindowSurface");
-    _glfw.egl.MakeCurrent = (PFN_eglMakeCurrent)
-        _glfw_dlsym(_glfw.egl.handle, "eglMakeCurrent");
-    _glfw.egl.SwapBuffers = (PFN_eglSwapBuffers)
-        _glfw_dlsym(_glfw.egl.handle, "eglSwapBuffers");
-    _glfw.egl.SwapInterval = (PFN_eglSwapInterval)
-        _glfw_dlsym(_glfw.egl.handle, "eglSwapInterval");
-    _glfw.egl.QueryString = (PFN_eglQueryString)
-        _glfw_dlsym(_glfw.egl.handle, "eglQueryString");
-    _glfw.egl.GetProcAddress = (PFN_eglGetProcAddress)
-        _glfw_dlsym(_glfw.egl.handle, "eglGetProcAddress");
+    glfw_dlsym(_glfw.egl.GetConfigAttrib, _glfw.egl.handle, "eglGetConfigAttrib");
+    glfw_dlsym(_glfw.egl.GetConfigs, _glfw.egl.handle, "eglGetConfigs");
+    glfw_dlsym(_glfw.egl.GetDisplay, _glfw.egl.handle, "eglGetDisplay");
+    glfw_dlsym(_glfw.egl.GetError, _glfw.egl.handle, "eglGetError");
+    glfw_dlsym(_glfw.egl.Initialize, _glfw.egl.handle, "eglInitialize");
+    glfw_dlsym(_glfw.egl.Terminate, _glfw.egl.handle, "eglTerminate");
+    glfw_dlsym(_glfw.egl.BindAPI, _glfw.egl.handle, "eglBindAPI");
+    glfw_dlsym(_glfw.egl.CreateContext, _glfw.egl.handle, "eglCreateContext");
+    glfw_dlsym(_glfw.egl.DestroySurface, _glfw.egl.handle, "eglDestroySurface");
+    glfw_dlsym(_glfw.egl.DestroyContext, _glfw.egl.handle, "eglDestroyContext");
+    glfw_dlsym(_glfw.egl.CreateWindowSurface, _glfw.egl.handle, "eglCreateWindowSurface");
+    glfw_dlsym(_glfw.egl.MakeCurrent, _glfw.egl.handle, "eglMakeCurrent");
+    glfw_dlsym(_glfw.egl.SwapBuffers, _glfw.egl.handle, "eglSwapBuffers");
+    glfw_dlsym(_glfw.egl.SwapInterval, _glfw.egl.handle, "eglSwapInterval");
+    glfw_dlsym(_glfw.egl.QueryString, _glfw.egl.handle, "eglQueryString");
+    glfw_dlsym(_glfw.egl.GetProcAddress, _glfw.egl.handle, "eglGetProcAddress");
 
     if (!_glfw.egl.GetConfigAttrib ||
         !_glfw.egl.GetConfigs ||
@@ -714,7 +698,7 @@ bool _glfwCreateContextEGL(_GLFWwindow* window,
 // Returns the Visual and depth of the chosen EGLConfig
 //
 #if defined(_GLFW_X11)
-bool _glfwChooseVisualEGL(const _GLFWwndconfig* wndconfig,
+bool _glfwChooseVisualEGL(const _GLFWwndconfig* wndconfig UNUSED,
                               const _GLFWctxconfig* ctxconfig,
                               const _GLFWfbconfig* fbconfig,
                               Visual** visual, int* depth)
diff --git a/glfw/glfw.py b/glfw/glfw.py
index ed1d42585..73a11b6a3 100755
--- a/glfw/glfw.py
+++ b/glfw/glfw.py
@@ -23,10 +23,7 @@ def wayland_protocol_file_name(base, ext='c'):
 
 def init_env(env, pkg_config, at_least_version, test_compile, module='x11'):
     ans = env.copy()
-    ans.cflags = [
-        x for x in ans.cflags
-        if x not in '-Wpedantic -Wextra -pedantic-errors'.split()
-    ]
+    ans.cflags = list(ans.cflags)
     if not is_macos:
         ans.cflags.append('-pthread')
         ans.ldpaths.append('-pthread')
diff --git a/glfw/glx_context.c b/glfw/glx_context.c
index 77e90085a..d3851e17c 100644
--- a/glfw/glx_context.c
+++ b/glfw/glx_context.c
@@ -142,7 +142,7 @@ static bool chooseGLXFBConfig(const _GLFWfbconfig* desired,
 
 // Create the OpenGL context using legacy API
 //
-static GLXContext createLegacyContextGLX(_GLFWwindow* window,
+static GLXContext createLegacyContextGLX(_GLFWwindow* window UNUSED,
                                          GLXFBConfig fbconfig,
                                          GLXContext share)
 {
@@ -222,8 +222,11 @@ static GLFWglproc getProcAddressGLX(const char* procname)
         return _glfw.glx.GetProcAddress((const GLubyte*) procname);
     else if (_glfw.glx.GetProcAddressARB)
         return _glfw.glx.GetProcAddressARB((const GLubyte*) procname);
-    else
-        return _glfw_dlsym(_glfw.glx.handle, procname);
+    else {
+        GLFWglproc ans = NULL;
+        glfw_dlsym(ans, _glfw.glx.handle, procname);
+        return ans;
+    }
 }
 
 static void destroyContextGLX(_GLFWwindow* window)
@@ -280,36 +283,21 @@ bool _glfwInitGLX(void)
         return false;
     }
 
-    _glfw.glx.GetFBConfigs =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetFBConfigs");
-    _glfw.glx.GetFBConfigAttrib =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetFBConfigAttrib");
-    _glfw.glx.GetClientString =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetClientString");
-    _glfw.glx.QueryExtension =
-        _glfw_dlsym(_glfw.glx.handle, "glXQueryExtension");
-    _glfw.glx.QueryVersion =
-        _glfw_dlsym(_glfw.glx.handle, "glXQueryVersion");
-    _glfw.glx.DestroyContext =
-        _glfw_dlsym(_glfw.glx.handle, "glXDestroyContext");
-    _glfw.glx.MakeCurrent =
-        _glfw_dlsym(_glfw.glx.handle, "glXMakeCurrent");
-    _glfw.glx.SwapBuffers =
-        _glfw_dlsym(_glfw.glx.handle, "glXSwapBuffers");
-    _glfw.glx.QueryExtensionsString =
-        _glfw_dlsym(_glfw.glx.handle, "glXQueryExtensionsString");
-    _glfw.glx.CreateNewContext =
-        _glfw_dlsym(_glfw.glx.handle, "glXCreateNewContext");
-    _glfw.glx.CreateWindow =
-        _glfw_dlsym(_glfw.glx.handle, "glXCreateWindow");
-    _glfw.glx.DestroyWindow =
-        _glfw_dlsym(_glfw.glx.handle, "glXDestroyWindow");
-    _glfw.glx.GetProcAddress =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetProcAddress");
-    _glfw.glx.GetProcAddressARB =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetProcAddressARB");
-    _glfw.glx.GetVisualFromFBConfig =
-        _glfw_dlsym(_glfw.glx.handle, "glXGetVisualFromFBConfig");
+    glfw_dlsym(_glfw.glx.GetFBConfigs, _glfw.glx.handle, "glXGetFBConfigs");
+    glfw_dlsym(_glfw.glx.GetFBConfigAttrib, _glfw.glx.handle, "glXGetFBConfigAttrib");
+    glfw_dlsym(_glfw.glx.GetClientString, _glfw.glx.handle, "glXGetClientString");
+    glfw_dlsym(_glfw.glx.QueryExtension, _glfw.glx.handle, "glXQueryExtension");
+    glfw_dlsym(_glfw.glx.QueryVersion, _glfw.glx.handle, "glXQueryVersion");
+    glfw_dlsym(_glfw.glx.DestroyContext, _glfw.glx.handle, "glXDestroyContext");
+    glfw_dlsym(_glfw.glx.MakeCurrent, _glfw.glx.handle, "glXMakeCurrent");
+    glfw_dlsym(_glfw.glx.SwapBuffers, _glfw.glx.handle, "glXSwapBuffers");
+    glfw_dlsym(_glfw.glx.QueryExtensionsString, _glfw.glx.handle, "glXQueryExtensionsString");
+    glfw_dlsym(_glfw.glx.CreateNewContext, _glfw.glx.handle, "glXCreateNewContext");
+    glfw_dlsym(_glfw.glx.CreateWindow, _glfw.glx.handle, "glXCreateWindow");
+    glfw_dlsym(_glfw.glx.DestroyWindow, _glfw.glx.handle, "glXDestroyWindow");
+    glfw_dlsym(_glfw.glx.GetProcAddress, _glfw.glx.handle, "glXGetProcAddress");
+    glfw_dlsym(_glfw.glx.GetProcAddressARB, _glfw.glx.handle, "glXGetProcAddressARB");
+    glfw_dlsym(_glfw.glx.GetVisualFromFBConfig, _glfw.glx.handle, "glXGetVisualFromFBConfig");
 
     if (!_glfw.glx.GetFBConfigs ||
         !_glfw.glx.GetFBConfigAttrib ||
@@ -631,8 +619,8 @@ bool _glfwCreateContextGLX(_GLFWwindow* window,
 
 // Returns the Visual and depth of the chosen GLXFBConfig
 //
-bool _glfwChooseVisualGLX(const _GLFWwndconfig* wndconfig,
-                              const _GLFWctxconfig* ctxconfig,
+bool _glfwChooseVisualGLX(const _GLFWwndconfig* wndconfig UNUSED,
+                              const _GLFWctxconfig* ctxconfig UNUSED,
                               const _GLFWfbconfig* fbconfig,
                               Visual** visual, int* depth)
 {
diff --git a/glfw/glx_context.h b/glfw/glx_context.h
index 6abdb2b6c..d2572d033 100644
--- a/glfw/glx_context.h
+++ b/glfw/glx_context.h
@@ -107,8 +107,8 @@ typedef GLXContext (*PFNGLXCREATECONTEXTATTRIBSARBPROC)(Display*,GLXFBConfig,GLX
 #define glXCreateWindow _glfw.glx.CreateWindow
 #define glXDestroyWindow _glfw.glx.DestroyWindow
 
-#define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextGLX glx
-#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryGLX glx
+#define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextGLX glx;
+#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryGLX glx;
 
 
 // GLX-specific per-context data
@@ -178,4 +178,3 @@ bool _glfwChooseVisualGLX(const _GLFWwndconfig* wndconfig,
                               const _GLFWctxconfig* ctxconfig,
                               const _GLFWfbconfig* fbconfig,
                               Visual** visual, int* depth);
-
diff --git a/glfw/ibus_glfw.c b/glfw/ibus_glfw.c
index a21b3a5c3..d32d0cb01 100644
--- a/glfw/ibus_glfw.c
+++ b/glfw/ibus_glfw.c
@@ -117,7 +117,7 @@ send_text(const char *text, int state) {
 // Connection handling {{{
 
 static DBusHandlerResult
-message_handler(DBusConnection *conn, DBusMessage *msg, void *user_data) {
+message_handler(DBusConnection *conn UNUSED, DBusMessage *msg, void *user_data) {
     // To monitor signals from IBUS, use
     //  dbus-monitor --address `ibus address` "type='signal',interface='org.freedesktop.IBus.InputContext'"
     _GLFWIBUSData *ibus = (_GLFWIBUSData*)user_data;
diff --git a/glfw/input.c b/glfw/input.c
index db899cc2a..ed1ecf567 100644
--- a/glfw/input.c
+++ b/glfw/input.c
@@ -1371,7 +1371,7 @@ GLFWAPI int glfwGetGamepadState(int jid, GLFWgamepadstate* state)
     return true;
 }
 
-GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
+GLFWAPI void glfwSetClipboardString(GLFWwindow* handle UNUSED, const char* string)
 {
     assert(string != NULL);
 
@@ -1379,14 +1379,14 @@ GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
     _glfwPlatformSetClipboardString(string);
 }
 
-GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle)
+GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle UNUSED)
 {
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
     return _glfwPlatformGetClipboardString();
 }
 
 #if defined(_GLFW_X11) || defined(_GLFW_WAYLAND)
-GLFWAPI void glfwSetPrimarySelectionString(GLFWwindow* handle, const char* string)
+GLFWAPI void glfwSetPrimarySelectionString(GLFWwindow* handle UNUSED, const char* string)
 {
     assert(string != NULL);
 
@@ -1394,7 +1394,7 @@ GLFWAPI void glfwSetPrimarySelectionString(GLFWwindow* handle, const char* strin
     _glfwPlatformSetPrimarySelectionString(string);
 }
 
-GLFWAPI const char* glfwGetPrimarySelectionString(GLFWwindow* handle)
+GLFWAPI const char* glfwGetPrimarySelectionString(GLFWwindow* handle UNUSED)
 {
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
     return _glfwPlatformGetPrimarySelectionString();
diff --git a/glfw/internal.h b/glfw/internal.h
index b08ed3988..22e870d05 100644
--- a/glfw/internal.h
+++ b/glfw/internal.h
@@ -225,12 +225,32 @@ typedef void (APIENTRY * PFN_vkVoidFunction)(void);
 
 // Swaps the provided pointers
 #define _GLFW_SWAP_POINTERS(x, y) \
-    {                             \
-        void* t;                  \
+    do{                           \
+        __typeof__(x) t;          \
         t = x;                    \
         x = y;                    \
         y = t;                    \
-    }
+    }while(0)
+
+
+// Suppress some pedantic warnings
+#ifdef __clang__
+#define START_ALLOW_CASE_RANGE _Pragma("clang diagnostic push") _Pragma("clang diagnostic ignored \"-Wpedantic\"")
+#define END_ALLOW_CASE_RANGE _Pragma("clang diagnostic pop")
+#define ALLOW_UNUSED_RESULT _Pragma("clang diagnostic push") _Pragma("clang diagnostic ignored \"-Wunused-result\"")
+#define END_ALLOW_UNUSED_RESULT _Pragma("clang diagnostic pop")
+#else
+#define START_ALLOW_CASE_RANGE _Pragma("GCC diagnostic ignored \"-Wpedantic\"")
+#define END_ALLOW_CASE_RANGE _Pragma("GCC diagnostic pop")
+#define ALLOW_UNUSED_RESULT _Pragma("GCC diagnostic ignored \"-Wunused-result\"")
+#define END_ALLOW_UNUSED_RESULT _Pragma("GCC diagnostic pop")
+#endif
+
+// dlsym that works with -Wpedantic
+#define glfw_dlsym(dest, handle, name) do {*(void **)&(handle) = _glfw_dlsym(handle, name);}while (0)
+
+// Mark function arguments as unused
+#define UNUSED __attribute__ ((unused))
 
 // Per-thread error structure
 //
@@ -367,7 +387,7 @@ struct _GLFWcontext
     _GLFWdestroycontextfun      destroy;
 
     // This is defined in the context API's context.h
-    _GLFW_PLATFORM_CONTEXT_STATE;
+    _GLFW_PLATFORM_CONTEXT_STATE
     // This is defined in egl_context.h
     _GLFW_EGL_CONTEXT_STATE;
     // This is defined in osmesa_context.h
@@ -587,9 +607,9 @@ struct _GLFWlibrary
     // This is defined in the window API's platform.h
     _GLFW_PLATFORM_LIBRARY_WINDOW_STATE;
     // This is defined in the context API's context.h
-    _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE;
+    _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE
     // This is defined in the platform's joystick.h
-    _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE;
+    _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE
     // This is defined in egl_context.h
     _GLFW_EGL_LIBRARY_CONTEXT_STATE;
     // This is defined in osmesa_context.h
diff --git a/glfw/linux_joystick.c b/glfw/linux_joystick.c
index 908605d2e..479753fa0 100644
--- a/glfw/linux_joystick.c
+++ b/glfw/linux_joystick.c
@@ -385,7 +385,7 @@ void _glfwDetectJoystickConnectionLinux(void)
 //////                       GLFW platform API                      //////
 //////////////////////////////////////////////////////////////////////////
 
-int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
+int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode UNUSED)
 {
     // Read all queued events (non-blocking)
     for (;;)
@@ -425,6 +425,6 @@ int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
     return js->present;
 }
 
-void _glfwPlatformUpdateGamepadGUID(char* guid)
+void _glfwPlatformUpdateGamepadGUID(char* guid UNUSED)
 {
 }
diff --git a/glfw/linux_joystick.h b/glfw/linux_joystick.h
index 82593e448..242ace5fd 100644
--- a/glfw/linux_joystick.h
+++ b/glfw/linux_joystick.h
@@ -29,7 +29,7 @@
 #include <regex.h>
 
 #define _GLFW_PLATFORM_JOYSTICK_STATE         _GLFWjoystickLinux linjs
-#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE _GLFWlibraryLinux  linjs
+#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE _GLFWlibraryLinux  linjs;
 
 #define _GLFW_PLATFORM_MAPPING_NAME "Linux"
 
@@ -59,4 +59,3 @@ typedef struct _GLFWlibraryLinux
 bool _glfwInitJoysticksLinux(void);
 void _glfwTerminateJoysticksLinux(void);
 void _glfwDetectJoystickConnectionLinux(void);
-
diff --git a/glfw/linux_notify.c b/glfw/linux_notify.c
index e608cae39..b0691cfd7 100644
--- a/glfw/linux_notify.c
+++ b/glfw/linux_notify.c
@@ -43,8 +43,7 @@ notification_created(DBusMessage *msg, const char* errmsg, void *data) {
 }
 
 static DBusHandlerResult
-message_handler(DBusConnection *conn, DBusMessage *msg, void *user_data) {
-    (void)(user_data);
+message_handler(DBusConnection *conn UNUSED, DBusMessage *msg, void *user_data UNUSED) {
     /* printf("session_bus message_handler invoked interface: %s member: %s\n", dbus_message_get_interface(msg), dbus_message_get_member(msg)); */
     if (dbus_message_is_signal(msg, NOTIFICATIONS_IFACE, "ActionInvoked")) {
         uint32_t notification_id;
diff --git a/glfw/nsgl_context.h b/glfw/nsgl_context.h
index 961e01286..85977b90e 100644
--- a/glfw/nsgl_context.h
+++ b/glfw/nsgl_context.h
@@ -24,8 +24,8 @@
 //
 //========================================================================
 
-#define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextNSGL nsgl
-#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryNSGL nsgl
+#define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextNSGL nsgl;
+#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryNSGL nsgl;
 
 
 // NSGL-specific per-context data
@@ -53,4 +53,3 @@ bool _glfwCreateContextNSGL(_GLFWwindow* window,
                                 const _GLFWctxconfig* ctxconfig,
                                 const _GLFWfbconfig* fbconfig);
 void _glfwDestroyContextNSGL(_GLFWwindow* window);
-
diff --git a/glfw/nsgl_context.m b/glfw/nsgl_context.m
index 6ef0d1050..33905c2e3 100644
--- a/glfw/nsgl_context.m
+++ b/glfw/nsgl_context.m
@@ -43,15 +43,14 @@ static void swapBuffersNSGL(_GLFWwindow* window)
     [window->context.nsgl.object flushBuffer];
 }
 
-static void swapIntervalNSGL(int interval)
+static void swapIntervalNSGL(int interval UNUSED)
 {
     // As of Mojave this does not work so we use CVDisplayLink instead
-    (void)(interval);
     _glfwInputError(GLFW_API_UNAVAILABLE,
                     "NSGL: Swap intervals do not work on macOS");
 }
 
-static int extensionSupportedNSGL(const char* extension)
+static int extensionSupportedNSGL(const char* extension UNUSED)
 {
     // There are no NSGL extensions
     return false;
@@ -63,8 +62,9 @@ static GLFWglproc getProcAddressNSGL(const char* procname)
                                                        procname,
                                                        kCFStringEncodingASCII);
 
-    GLFWglproc symbol = CFBundleGetFunctionPointerForName(_glfw.nsgl.framework,
-                                                          symbolName);
+    GLFWglproc symbol;
+    *(void **) &symbol = CFBundleGetFunctionPointerForName(_glfw.nsgl.framework,
+                                                           symbolName);
 
     CFRelease(symbolName);
 
diff --git a/glfw/null_joystick.h b/glfw/null_joystick.h
index 3075815d0..d52acb602 100644
--- a/glfw/null_joystick.h
+++ b/glfw/null_joystick.h
@@ -25,7 +25,6 @@
 //========================================================================
 
 #define _GLFW_PLATFORM_JOYSTICK_STATE         int nulljs
-#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE int nulljs
+#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE int nulljs;
 
 #define _GLFW_PLATFORM_MAPPING_NAME ""
-
diff --git a/glfw/osmesa_context.c b/glfw/osmesa_context.c
index a6fa4e5c9..286822143 100644
--- a/glfw/osmesa_context.c
+++ b/glfw/osmesa_context.c
@@ -87,17 +87,17 @@ static void destroyContextOSMesa(_GLFWwindow* window)
     }
 }
 
-static void swapBuffersOSMesa(_GLFWwindow* window)
+static void swapBuffersOSMesa(_GLFWwindow* window UNUSED)
 {
     // No double buffering on OSMesa
 }
 
-static void swapIntervalOSMesa(int interval)
+static void swapIntervalOSMesa(int interval UNUSED)
 {
     // No swap interval on OSMesa
 }
 
-static int extensionSupportedOSMesa(const char* extension)
+static int extensionSupportedOSMesa(const char* extension UNUSED)
 {
     // OSMesa does not have extensions
     return false;
@@ -145,20 +145,13 @@ bool _glfwInitOSMesa(void)
         return false;
     }
 
-    _glfw.osmesa.CreateContextExt = (PFN_OSMesaCreateContextExt)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaCreateContextExt");
-    _glfw.osmesa.CreateContextAttribs = (PFN_OSMesaCreateContextAttribs)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaCreateContextAttribs");
-    _glfw.osmesa.DestroyContext = (PFN_OSMesaDestroyContext)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaDestroyContext");
-    _glfw.osmesa.MakeCurrent = (PFN_OSMesaMakeCurrent)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaMakeCurrent");
-    _glfw.osmesa.GetColorBuffer = (PFN_OSMesaGetColorBuffer)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetColorBuffer");
-    _glfw.osmesa.GetDepthBuffer = (PFN_OSMesaGetDepthBuffer)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetDepthBuffer");
-    _glfw.osmesa.GetProcAddress = (PFN_OSMesaGetProcAddress)
-        _glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetProcAddress");
+    glfw_dlsym(_glfw.osmesa.CreateContextExt, _glfw.osmesa.handle, "OSMesaCreateContextExt");
+    glfw_dlsym(_glfw.osmesa.CreateContextAttribs, _glfw.osmesa.handle, "OSMesaCreateContextAttribs");
+    glfw_dlsym(_glfw.osmesa.DestroyContext, _glfw.osmesa.handle, "OSMesaDestroyContext");
+    glfw_dlsym(_glfw.osmesa.MakeCurrent, _glfw.osmesa.handle, "OSMesaMakeCurrent");
+    glfw_dlsym(_glfw.osmesa.GetColorBuffer, _glfw.osmesa.handle, "OSMesaGetColorBuffer");
+    glfw_dlsym(_glfw.osmesa.GetDepthBuffer, _glfw.osmesa.handle, "OSMesaGetDepthBuffer");
+    glfw_dlsym(_glfw.osmesa.GetProcAddress, _glfw.osmesa.handle, "OSMesaGetProcAddress");
 
     if (!_glfw.osmesa.CreateContextExt ||
         !_glfw.osmesa.DestroyContext ||
diff --git a/glfw/vulkan.c b/glfw/vulkan.c
index f7f3b4267..7d62e29b2 100644
--- a/glfw/vulkan.c
+++ b/glfw/vulkan.c
@@ -66,7 +66,7 @@ bool _glfwInitVulkan(int mode)
         return false;
     }
 
-    _glfw.vk.GetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)
+    *(void **) &_glfw.vk.GetInstanceProcAddr =
         _glfw_dlsym(_glfw.vk.handle, "vkGetInstanceProcAddr");
     if (!_glfw.vk.GetInstanceProcAddr)
     {
@@ -260,7 +260,7 @@ GLFWAPI GLFWvkproc glfwGetInstanceProcAddress(VkInstance instance,
     }
 #else
     if (!proc)
-        proc = (GLFWvkproc) _glfw_dlsym(_glfw.vk.handle, procname);
+        *(void **) &proc = _glfw_dlsym(_glfw.vk.handle, procname);
 #endif
 
     return proc;
diff --git a/glfw/wgl_context.h b/glfw/wgl_context.h
index 3b5dce13f..8f86d60a0 100644
--- a/glfw/wgl_context.h
+++ b/glfw/wgl_context.h
@@ -103,8 +103,8 @@ typedef BOOL (WINAPI * PFN_wglShareLists)(HGLRC,HGLRC);
 #define _GLFW_RECREATION_REQUIRED   1
 #define _GLFW_RECREATION_IMPOSSIBLE 2
 
-#define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextWGL wgl
-#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryWGL wgl
+#define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextWGL wgl;
+#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryWGL wgl;
 
 
 // WGL-specific per-context data
@@ -156,4 +156,3 @@ void _glfwTerminateWGL(void);
 bool _glfwCreateContextWGL(_GLFWwindow* window,
                                const _GLFWctxconfig* ctxconfig,
                                const _GLFWfbconfig* fbconfig);
-
diff --git a/glfw/window.c b/glfw/window.c
index 1baf56c82..560bc3969 100644
--- a/glfw/window.c
+++ b/glfw/window.c
@@ -82,7 +82,7 @@ _GLFWwindow* _glfwFocusedWindow() {
 _GLFWwindow* _glfwWindowForId(GLFWid id) {
     _GLFWwindow *w = _glfw.windowListHead;
     while (w) {
-        if (w->id == _glfw.focusedWindowId) return w;
+        if (w->id == id) return w;
         w = w->next;
     }
     return NULL;
diff --git a/glfw/wl_init.c b/glfw/wl_init.c
index ef4d57b00..9559eedd2 100644
--- a/glfw/wl_init.c
+++ b/glfw/wl_init.c
@@ -79,12 +79,12 @@ static _GLFWwindow* findWindowFromDecorationSurface(struct wl_surface* surface,
     return window;
 }
 
-static void pointerHandleEnter(void* data,
-                               struct wl_pointer* pointer,
+static void pointerHandleEnter(void* data UNUSED,
+                               struct wl_pointer* pointer UNUSED,
                                uint32_t serial,
                                struct wl_surface* surface,
-                               wl_fixed_t sx,
-                               wl_fixed_t sy)
+                               wl_fixed_t sx UNUSED,
+                               wl_fixed_t sy UNUSED)
 {
     // Happens in the case we just destroyed the surface.
     if (!surface)
@@ -109,10 +109,10 @@ static void pointerHandleEnter(void* data,
     _glfwInputCursorEnter(window, true);
 }
 
-static void pointerHandleLeave(void* data,
-                               struct wl_pointer* pointer,
+static void pointerHandleLeave(void* data UNUSED,
+                               struct wl_pointer* pointer UNUSED,
                                uint32_t serial,
-                               struct wl_surface* surface)
+                               struct wl_surface* surface UNUSED)
 {
     _GLFWwindow* window = _glfw.wl.pointerFocus;
 
@@ -154,9 +154,9 @@ static void setCursor(GLFWCursorShape shape)
     wl_surface_commit(surface);
 }
 
-static void pointerHandleMotion(void* data,
-                                struct wl_pointer* pointer,
-                                uint32_t time,
+static void pointerHandleMotion(void* data UNUSED,
+                                struct wl_pointer* pointer UNUSED,
+                                uint32_t time UNUSED,
                                 wl_fixed_t sx,
                                 wl_fixed_t sy)
 {
@@ -209,10 +209,10 @@ static void pointerHandleMotion(void* data,
     setCursor(cursorShape);
 }
 
-static void pointerHandleButton(void* data,
-                                struct wl_pointer* pointer,
+static void pointerHandleButton(void* data UNUSED,
+                                struct wl_pointer* pointer UNUSED,
                                 uint32_t serial,
-                                uint32_t time,
+                                uint32_t time UNUSED,
                                 uint32_t button,
                                 uint32_t state)
 {
@@ -296,9 +296,9 @@ static void pointerHandleButton(void* data,
                          _glfw.wl.xkb.states.modifiers);
 }
 
-static void pointerHandleAxis(void* data,
-                              struct wl_pointer* pointer,
-                              uint32_t time,
+static void pointerHandleAxis(void* data UNUSED,
+                              struct wl_pointer* pointer UNUSED,
+                              uint32_t time UNUSED,
                               uint32_t axis,
                               wl_fixed_t value)
 {
@@ -326,8 +326,8 @@ static const struct wl_pointer_listener pointerListener = {
     pointerHandleAxis,
 };
 
-static void keyboardHandleKeymap(void* data,
-                                 struct wl_keyboard* keyboard,
+static void keyboardHandleKeymap(void* data UNUSED,
+                                 struct wl_keyboard* keyboard UNUSED,
                                  uint32_t format,
                                  int fd,
                                  uint32_t size)
@@ -351,11 +351,11 @@ static void keyboardHandleKeymap(void* data,
 
 }
 
-static void keyboardHandleEnter(void* data,
-                                struct wl_keyboard* keyboard,
-                                uint32_t serial,
+static void keyboardHandleEnter(void* data UNUSED,
+                                struct wl_keyboard* keyboard UNUSED,
+                                uint32_t serial UNUSED,
                                 struct wl_surface* surface,
-                                struct wl_array* keys)
+                                struct wl_array* keys UNUSED)
 {
     // Happens in the case we just destroyed the surface.
     if (!surface)
@@ -373,10 +373,10 @@ static void keyboardHandleEnter(void* data,
     _glfwInputWindowFocus(window, true);
 }
 
-static void keyboardHandleLeave(void* data,
-                                struct wl_keyboard* keyboard,
-                                uint32_t serial,
-                                struct wl_surface* surface)
+static void keyboardHandleLeave(void* data UNUSED,
+                                struct wl_keyboard* keyboard UNUSED,
+                                uint32_t serial UNUSED,
+                                struct wl_surface* surface UNUSED)
 {
     _GLFWwindow* window = _glfw.wl.keyboardFocus;
 
@@ -388,7 +388,7 @@ static void keyboardHandleLeave(void* data,
 }
 
 static void
-dispatchPendingKeyRepeats(id_type timer_id, void *data) {
+dispatchPendingKeyRepeats(id_type timer_id UNUSED, void *data UNUSED) {
     if (_glfw.wl.keyRepeatInfo.keyboardFocus != _glfw.wl.keyboardFocus || _glfw.wl.keyboardRepeatRate == 0) return;
     glfw_xkb_handle_key_event(_glfw.wl.keyRepeatInfo.keyboardFocus, &_glfw.wl.xkb, _glfw.wl.keyRepeatInfo.key, GLFW_REPEAT);
     changeTimerInterval(&_glfw.wl.eventLoopData, _glfw.wl.keyRepeatInfo.keyRepeatTimer, (1.0 / (double)_glfw.wl.keyboardRepeatRate));
@@ -396,10 +396,10 @@ dispatchPendingKeyRepeats(id_type timer_id, void *data) {
 }
 
 
-static void keyboardHandleKey(void* data,
-                              struct wl_keyboard* keyboard,
-                              uint32_t serial,
-                              uint32_t time,
+static void keyboardHandleKey(void* data UNUSED,
+                              struct wl_keyboard* keyboard UNUSED,
+                              uint32_t serial UNUSED,
+                              uint32_t time UNUSED,
                               uint32_t key,
                               uint32_t state)
 {
@@ -422,9 +422,9 @@ static void keyboardHandleKey(void* data,
     toggleTimer(&_glfw.wl.eventLoopData, _glfw.wl.keyRepeatInfo.keyRepeatTimer, repeatable ? 1 : 0);
 }
 
-static void keyboardHandleModifiers(void* data,
-                                    struct wl_keyboard* keyboard,
-                                    uint32_t serial,
+static void keyboardHandleModifiers(void* data UNUSED,
+                                    struct wl_keyboard* keyboard UNUSED,
+                                    uint32_t serial UNUSED,
                                     uint32_t modsDepressed,
                                     uint32_t modsLatched,
                                     uint32_t modsLocked,
@@ -433,7 +433,7 @@ static void keyboardHandleModifiers(void* data,
     glfw_xkb_update_modifiers(&_glfw.wl.xkb, modsDepressed, modsLatched, modsLocked, 0, 0, group);
 }
 
-static void keyboardHandleRepeatInfo(void* data,
+static void keyboardHandleRepeatInfo(void* data UNUSED,
                                      struct wl_keyboard* keyboard,
                                      int32_t rate,
                                      int32_t delay)
@@ -454,7 +454,7 @@ static const struct wl_keyboard_listener keyboardListener = {
     keyboardHandleRepeatInfo,
 };
 
-static void seatHandleCapabilities(void* data,
+static void seatHandleCapabilities(void* data UNUSED,
                                    struct wl_seat* seat,
                                    enum wl_seat_capability caps)
 {
@@ -481,9 +481,9 @@ static void seatHandleCapabilities(void* data,
     }
 }
 
-static void seatHandleName(void* data,
-                           struct wl_seat* seat,
-                           const char* name)
+static void seatHandleName(void* data UNUSED,
+                           struct wl_seat* seat UNUSED,
+                           const char* name UNUSED)
 {
 }
 
@@ -492,7 +492,7 @@ static const struct wl_seat_listener seatListener = {
     seatHandleName,
 };
 
-static void wmBaseHandlePing(void* data,
+static void wmBaseHandlePing(void* data UNUSED,
                              struct xdg_wm_base* wmBase,
                              uint32_t serial)
 {
@@ -503,7 +503,7 @@ static const struct xdg_wm_base_listener wmBaseListener = {
     wmBaseHandlePing
 };
 
-static void registryHandleGlobal(void* data,
+static void registryHandleGlobal(void* data UNUSED,
                                  struct wl_registry* registry,
                                  uint32_t name,
                                  const char* interface,
@@ -609,8 +609,8 @@ static void registryHandleGlobal(void* data,
 
 }
 
-static void registryHandleGlobalRemove(void *data,
-                                       struct wl_registry *registry,
+static void registryHandleGlobalRemove(void *data UNUSED,
+                                       struct wl_registry *registry UNUSED,
                                        uint32_t name)
 {
     _GLFWmonitor* monitor;
@@ -642,19 +642,19 @@ static const struct wl_registry_listener registryListener = {
 
 
 static void registry_handle_global(void* data,
-                                 struct wl_registry* registry,
-                                 uint32_t name,
+                                 struct wl_registry* registry UNUSED,
+                                 uint32_t name UNUSED,
                                  const char* interface,
-                                 uint32_t version) {
+                                 uint32_t version UNUSED) {
     if (strcmp(interface, "zxdg_decoration_manager_v1") == 0) {
         bool *has_ssd = (bool*)data;
         if (has_ssd) *has_ssd = true;
     }
 }
 
-static void registry_handle_global_remove(void *data,
-                                       struct wl_registry *registry,
-                                       uint32_t name) {}
+static void registry_handle_global_remove(void *data UNUSED,
+                                       struct wl_registry *registry UNUSED,
+                                       uint32_t name UNUSED) {}
 GLFWAPI const char*
 glfwWaylandCheckForServerSideDecorations(void) {
     struct wl_display *display = wl_display_connect(NULL);
@@ -694,14 +694,10 @@ int _glfwPlatformInit(void)
         return false;
     }
 
-    _glfw.wl.cursor.theme_load = (PFN_wl_cursor_theme_load)
-        _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_load");
-    _glfw.wl.cursor.theme_destroy = (PFN_wl_cursor_theme_destroy)
-        _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_destroy");
-    _glfw.wl.cursor.theme_get_cursor = (PFN_wl_cursor_theme_get_cursor)
-        _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_get_cursor");
-    _glfw.wl.cursor.image_get_buffer = (PFN_wl_cursor_image_get_buffer)
-        _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_image_get_buffer");
+    glfw_dlsym(_glfw.wl.cursor.theme_load, _glfw.wl.cursor.handle, "wl_cursor_theme_load");
+    glfw_dlsym(_glfw.wl.cursor.theme_destroy, _glfw.wl.cursor.handle, "wl_cursor_theme_destroy");
+    glfw_dlsym(_glfw.wl.cursor.theme_get_cursor, _glfw.wl.cursor.handle, "wl_cursor_theme_get_cursor");
+    glfw_dlsym(_glfw.wl.cursor.image_get_buffer, _glfw.wl.cursor.handle, "wl_cursor_image_get_buffer");
 
     _glfw.wl.egl.handle = _glfw_dlopen("libwayland-egl.so.1");
     if (!_glfw.wl.egl.handle)
@@ -711,12 +707,9 @@ int _glfwPlatformInit(void)
         return false;
     }
 
-    _glfw.wl.egl.window_create = (PFN_wl_egl_window_create)
-        _glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_create");
-    _glfw.wl.egl.window_destroy = (PFN_wl_egl_window_destroy)
-        _glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_destroy");
-    _glfw.wl.egl.window_resize = (PFN_wl_egl_window_resize)
-        _glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_resize");
+    glfw_dlsym(_glfw.wl.egl.window_create, _glfw.wl.egl.handle, "wl_egl_window_create");
+    glfw_dlsym(_glfw.wl.egl.window_destroy, _glfw.wl.egl.handle, "wl_egl_window_destroy");
+    glfw_dlsym(_glfw.wl.egl.window_resize, _glfw.wl.egl.handle, "wl_egl_window_resize");
 
     _glfw.wl.display = wl_display_connect(NULL);
     if (!_glfw.wl.display)
diff --git a/glfw/wl_monitor.c b/glfw/wl_monitor.c
index c8c6bbf7f..4f358c353 100644
--- a/glfw/wl_monitor.c
+++ b/glfw/wl_monitor.c
@@ -34,15 +34,15 @@
 
 
 static void outputHandleGeometry(void* data,
-                                 struct wl_output* output,
+                                 struct wl_output* output UNUSED,
                                  int32_t x,
                                  int32_t y,
                                  int32_t physicalWidth,
                                  int32_t physicalHeight,
-                                 int32_t subpixel,
+                                 int32_t subpixel UNUSED,
                                  const char* make,
                                  const char* model,
-                                 int32_t transform)
+                                 int32_t transform UNUSED)
 {
     struct _GLFWmonitor *monitor = data;
     char name[1024];
@@ -57,7 +57,7 @@ static void outputHandleGeometry(void* data,
 }
 
 static void outputHandleMode(void* data,
-                             struct wl_output* output,
+                             struct wl_output* output UNUSED,
                              uint32_t flags,
                              int32_t width,
                              int32_t height,
@@ -82,7 +82,7 @@ static void outputHandleMode(void* data,
         monitor->wl.currentMode = monitor->modeCount - 1;
 }
 
-static void outputHandleDone(void* data, struct wl_output* output)
+static void outputHandleDone(void* data, struct wl_output* output UNUSED)
 {
     struct _GLFWmonitor *monitor = data;
     for (int i = 0; i < _glfw.monitorCount; i++) {
@@ -93,7 +93,7 @@ static void outputHandleDone(void* data, struct wl_output* output)
 }
 
 static void outputHandleScale(void* data,
-                              struct wl_output* output,
+                              struct wl_output* output UNUSED,
                               int32_t factor)
 {
     struct _GLFWmonitor *monitor = data;
@@ -198,15 +198,15 @@ void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode)
     *mode = monitor->modes[monitor->wl.currentMode];
 }
 
-bool _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
+bool _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor UNUSED, GLFWgammaramp* ramp UNUSED)
 {
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Gamma ramp access is not available");
     return false;
 }
 
-void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor,
-                               const GLFWgammaramp* ramp)
+void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor UNUSED,
+                               const GLFWgammaramp* ramp UNUSED)
 {
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Gamma ramp access is not available");
@@ -223,4 +223,3 @@ GLFWAPI struct wl_output* glfwGetWaylandMonitor(GLFWmonitor* handle)
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
     return monitor->wl.output;
 }
-
diff --git a/glfw/wl_platform.h b/glfw/wl_platform.h
index 4c41d199c..66e38bbd5 100644
--- a/glfw/wl_platform.h
+++ b/glfw/wl_platform.h
@@ -295,7 +295,7 @@ typedef struct _GLFWlibraryWayland
 typedef struct _GLFWmonitorWayland
 {
     struct wl_output*           output;
-    int                         name;
+    uint32_t                    name;
     int                         currentMode;
 
     int                         x;
@@ -321,4 +321,3 @@ void _glfwSetupWaylandDataDevice(void);
 void _glfwSetupWaylandPrimarySelectionDevice(void);
 void animateCursorImage(id_type timer_id, void *data);
 struct wl_cursor* _glfwLoadCursor(GLFWCursorShape);
-
diff --git a/glfw/wl_window.c b/glfw/wl_window.c
index 83ae8fa86..f997f409c 100644
--- a/glfw/wl_window.c
+++ b/glfw/wl_window.c
@@ -239,7 +239,7 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
     if (fd < 0)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Wayland: Creating a buffer file for %d B failed: %m",
+                        "Wayland: Creating a buffer file for %d B failed: %%m",
                         length);
         return NULL;
     }
@@ -248,7 +248,7 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
     if (data == MAP_FAILED)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Wayland: mmap failed: %m");
+                        "Wayland: mmap failed: %%m");
         close(fd);
         return NULL;
     }
@@ -363,7 +363,7 @@ static void destroyDecorations(_GLFWwindow* window)
 }
 
 static void xdgDecorationHandleConfigure(void* data,
-                                         struct zxdg_toplevel_decoration_v1* decoration,
+                                         struct zxdg_toplevel_decoration_v1* decoration UNUSED,
                                          uint32_t mode)
 {
     _GLFWwindow* window = data;
@@ -377,7 +377,7 @@ static const struct zxdg_toplevel_decoration_v1_listener xdgDecorationListener =
 };
 
 static void handleEnter(void *data,
-                        struct wl_surface *surface,
+                        struct wl_surface *surface UNUSED,
                         struct wl_output *output)
 {
     _GLFWwindow* window = data;
@@ -400,7 +400,7 @@ static void handleEnter(void *data,
 }
 
 static void handleLeave(void *data,
-                        struct wl_surface *surface,
+                        struct wl_surface *surface UNUSED,
                         struct wl_output *output)
 {
     _GLFWwindow* window = data;
@@ -496,15 +496,14 @@ setFullscreen(_GLFWwindow* window, _GLFWmonitor* monitor, bool on)
 }
 
 bool
-_glfwPlatformToggleFullscreen(_GLFWwindow *window, unsigned int flags) {
-    (void) flags;
+_glfwPlatformToggleFullscreen(_GLFWwindow *window, unsigned int flags UNUSED) {
     bool already_fullscreen = window->wl.fullscreened;
     setFullscreen(window, NULL, !already_fullscreen);
     return !already_fullscreen;
 }
 
 static void xdgToplevelHandleConfigure(void* data,
-                                       struct xdg_toplevel* toplevel,
+                                       struct xdg_toplevel* toplevel UNUSED,
                                        int32_t width,
                                        int32_t height,
                                        struct wl_array* states)
@@ -562,7 +561,7 @@ static void xdgToplevelHandleConfigure(void* data,
 }
 
 static void xdgToplevelHandleClose(void* data,
-                                   struct xdg_toplevel* toplevel)
+                                   struct xdg_toplevel* toplevel UNUSED)
 {
     _GLFWwindow* window = data;
     _glfwInputWindowCloseRequest(window);
@@ -573,7 +572,7 @@ static const struct xdg_toplevel_listener xdgToplevelListener = {
     xdgToplevelHandleClose
 };
 
-static void xdgSurfaceHandleConfigure(void* data,
+static void xdgSurfaceHandleConfigure(void* data UNUSED,
                                       struct xdg_surface* surface,
                                       uint32_t serial)
 {
@@ -726,7 +725,7 @@ incrementCursorImage(_GLFWwindow* window)
 }
 
 void
-animateCursorImage(id_type timer_id, void *data) {
+animateCursorImage(id_type timer_id UNUSED, void *data UNUSED) {
     incrementCursorImage(_glfw.wl.pointerFocus);
 }
 
@@ -945,14 +944,14 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
         xdg_toplevel_set_title(window->wl.xdg.toplevel, title);
 }
 
-void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
-                                int count, const GLFWimage* images)
+void _glfwPlatformSetWindowIcon(_GLFWwindow* window UNUSED,
+                                int count UNUSED, const GLFWimage* images UNUSED)
 {
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Setting window icon not supported");
 }
 
-void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
+void _glfwPlatformGetWindowPos(_GLFWwindow* window UNUSED, int* xpos UNUSED, int* ypos UNUSED)
 {
     // A Wayland client is not aware of its position, so just warn and leave it
     // as (0, 0)
@@ -961,7 +960,7 @@ void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
                     "Wayland: Window position retrieval not supported");
 }
 
-void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
+void _glfwPlatformSetWindowPos(_GLFWwindow* window UNUSED, int xpos UNUSED, int ypos UNUSED)
 {
     // A Wayland client can not set its position, so just warn
 
@@ -1002,8 +1001,8 @@ void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
     }
 }
 
-void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window,
-                                       int numer, int denom)
+void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window UNUSED,
+                                       int numer UNUSED, int denom UNUSED)
 {
     // TODO: find out how to trigger a resize.
     // The actual limits are checked in the xdg_toplevel::configure handler.
@@ -1043,7 +1042,7 @@ void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
         *yscale = (float) window->wl.scale;
 }
 
-double _glfwPlatformGetDoubleClickInterval(_GLFWwindow* window)
+double _glfwPlatformGetDoubleClickInterval(_GLFWwindow* window UNUSED)
 {
     return 0.5;
 }
@@ -1099,7 +1098,7 @@ void _glfwPlatformHideWindow(_GLFWwindow* window)
     window->wl.visible = false;
 }
 
-void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
+void _glfwPlatformRequestWindowAttention(_GLFWwindow* window UNUSED)
 {
     // TODO
     static bool notified = false;
@@ -1110,7 +1109,7 @@ void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
     }
 }
 
-int _glfwPlatformWindowBell(_GLFWwindow* window)
+int _glfwPlatformWindowBell(_GLFWwindow* window UNUSED)
 {
     // TODO: Use an actual Wayland API to implement this when one becomes available
     static char tty[L_ctermid + 1];
@@ -1123,7 +1122,7 @@ int _glfwPlatformWindowBell(_GLFWwindow* window)
     return false;
 }
 
-void _glfwPlatformFocusWindow(_GLFWwindow* window)
+void _glfwPlatformFocusWindow(_GLFWwindow* window UNUSED)
 {
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Focusing a window requires user interaction");
@@ -1131,9 +1130,9 @@ void _glfwPlatformFocusWindow(_GLFWwindow* window)
 
 void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
                                    _GLFWmonitor* monitor,
-                                   int xpos, int ypos,
-                                   int width, int height,
-                                   int refreshRate)
+                                   int xpos UNUSED, int ypos UNUSED,
+                                   int width UNUSED, int height UNUSED,
+                                   int refreshRate UNUSED)
 {
     setFullscreen(window, monitor, monitor != NULL);
     _glfwInputWindowMonitor(window, monitor);
@@ -1144,12 +1143,12 @@ int _glfwPlatformWindowFocused(_GLFWwindow* window)
     return _glfw.wl.keyboardFocus == window;
 }
 
-int _glfwPlatformWindowOccluded(_GLFWwindow* window)
+int _glfwPlatformWindowOccluded(_GLFWwindow* window UNUSED)
 {
     return false;
 }
 
-int _glfwPlatformWindowIconified(_GLFWwindow* window)
+int _glfwPlatformWindowIconified(_GLFWwindow* window UNUSED)
 {
     // xdg-shell doesn’t give any way to request whether a surface is
     // iconified.
@@ -1176,7 +1175,7 @@ int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
     return window->wl.transparent;
 }
 
-void _glfwPlatformSetWindowResizable(_GLFWwindow* window, bool enabled)
+void _glfwPlatformSetWindowResizable(_GLFWwindow* window UNUSED, bool enabled UNUSED)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
@@ -1194,19 +1193,19 @@ void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, bool enabled)
     }
 }
 
-void _glfwPlatformSetWindowFloating(_GLFWwindow* window, bool enabled)
+void _glfwPlatformSetWindowFloating(_GLFWwindow* window UNUSED, bool enabled UNUSED)
 {
     // TODO
     _glfwInputError(GLFW_PLATFORM_ERROR,
                     "Wayland: Window attribute setting not implemented yet");
 }
 
-float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
+float _glfwPlatformGetWindowOpacity(_GLFWwindow* window UNUSED)
 {
     return 1.f;
 }
 
-void _glfwPlatformSetWindowOpacity(_GLFWwindow* window, float opacity)
+void _glfwPlatformSetWindowOpacity(_GLFWwindow* window UNUSED, float opacity UNUSED)
 {
 }
 
@@ -1254,7 +1253,7 @@ void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y)
     }
 }
 
-void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
+void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode UNUSED)
 {
     _glfwPlatformSetCursor(window, window->wl.currentCursor);
 }
@@ -1271,7 +1270,7 @@ int _glfwPlatformGetKeyScancode(int key)
 
 int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
                               const GLFWimage* image,
-                              int xhot, int yhot, int count)
+                              int xhot, int yhot, int count UNUSED)
 {
     cursor->wl.buffer = createShmBuffer(image);
     if (!cursor->wl.buffer)
@@ -1305,11 +1304,11 @@ void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
 }
 
 static void handleRelativeMotion(void* data,
-                                 struct zwp_relative_pointer_v1* pointer,
-                                 uint32_t timeHi,
-                                 uint32_t timeLo,
-                                 wl_fixed_t dx,
-                                 wl_fixed_t dy,
+                                 struct zwp_relative_pointer_v1* pointer UNUSED,
+                                 uint32_t timeHi UNUSED,
+                                 uint32_t timeLo UNUSED,
+                                 wl_fixed_t dx UNUSED,
+                                 wl_fixed_t dy UNUSED,
                                  wl_fixed_t dxUnaccel,
                                  wl_fixed_t dyUnaccel)
 {
@@ -1327,8 +1326,8 @@ static const struct zwp_relative_pointer_v1_listener relativePointerListener = {
     handleRelativeMotion
 };
 
-static void handleLocked(void* data,
-                         struct zwp_locked_pointer_v1* lockedPointer)
+static void handleLocked(void* data UNUSED,
+                         struct zwp_locked_pointer_v1* lockedPointer UNUSED)
 {
 }
 
@@ -1346,10 +1345,10 @@ static void unlockPointer(_GLFWwindow* window)
     window->wl.pointerLock.lockedPointer = NULL;
 }
 
-static void lockPointer(_GLFWwindow* window);
+static void lockPointer(_GLFWwindow* window UNUSED);
 
-static void handleUnlocked(void* data,
-                           struct zwp_locked_pointer_v1* lockedPointer)
+static void handleUnlocked(void* data UNUSED,
+                           struct zwp_locked_pointer_v1* lockedPointer UNUSED)
 {
 }
 
@@ -1471,12 +1470,12 @@ static void send_text(char *text, int fd)
     close(fd);
 }
 
-static void _glfwSendClipboardText(void *data, struct wl_data_source *data_source, const char *mime_type, int fd) {
+static void _glfwSendClipboardText(void *data UNUSED, struct wl_data_source *data_source UNUSED, const char *mime_type UNUSED, int fd) {
     send_text(_glfw.wl.clipboardString, fd);
 }
 
-static void _glfwSendPrimarySelectionText(void *data, struct zwp_primary_selection_source_v1 *primary_selection_source,
-        const char *mime_type, int fd) {
+static void _glfwSendPrimarySelectionText(void *data UNUSED, struct zwp_primary_selection_source_v1 *primary_selection_source UNUSED,
+        const char *mime_type UNUSED, int fd) {
     send_text(_glfw.wl.primarySelectionString, fd);
 }
 
@@ -1541,28 +1540,28 @@ static char* read_data_offer(struct wl_data_offer *data_offer, const char *mime)
     return read_offer_string(pipefd[0]);
 }
 
-static void data_source_canceled(void *data, struct wl_data_source *wl_data_source) {
+static void data_source_canceled(void *data UNUSED, struct wl_data_source *wl_data_source) {
     if (_glfw.wl.dataSourceForClipboard == wl_data_source)
         _glfw.wl.dataSourceForClipboard = NULL;
     wl_data_source_destroy(wl_data_source);
 }
 
-static void primary_selection_source_canceled(void *data, struct zwp_primary_selection_source_v1 *primary_selection_source) {
+static void primary_selection_source_canceled(void *data UNUSED, struct zwp_primary_selection_source_v1 *primary_selection_source) {
     if (_glfw.wl.dataSourceForPrimarySelection == primary_selection_source)
         _glfw.wl.dataSourceForPrimarySelection = NULL;
     zwp_primary_selection_source_v1_destroy(primary_selection_source);
 }
 
-static void data_source_target(void *data, struct wl_data_source *wl_data_source, const char* mime) {
+static void data_source_target(void *data UNUSED, struct wl_data_source *wl_data_source UNUSED, const char* mime UNUSED) {
 }
 
-const static struct wl_data_source_listener data_source_listener = {
+static const struct wl_data_source_listener data_source_listener = {
     .send = _glfwSendClipboardText,
     .cancelled = data_source_canceled,
     .target = data_source_target,
 };
 
-const static struct zwp_primary_selection_source_v1_listener primary_selection_source_listener = {
+static const struct zwp_primary_selection_source_v1_listener primary_selection_source_listener = {
     .send = _glfwSendPrimarySelectionText,
     .cancelled = primary_selection_source_canceled,
 };
@@ -1585,7 +1584,7 @@ static void prune_unclaimed_primary_selection_offers(void) {
     }
 }
 
-static void mark_selection_offer(void *data, struct wl_data_device *data_device, struct wl_data_offer *data_offer)
+static void mark_selection_offer(void *data UNUSED, struct wl_data_device *data_device UNUSED, struct wl_data_offer *data_offer)
 {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].id == data_offer) {
@@ -1597,7 +1596,7 @@ static void mark_selection_offer(void *data, struct wl_data_device *data_device,
     prune_unclaimed_data_offers();
 }
 
-static void mark_primary_selection_offer(void *data, struct zwp_primary_selection_device_v1* primary_selection_device,
+static void mark_primary_selection_offer(void *data UNUSED, struct zwp_primary_selection_device_v1* primary_selection_device UNUSED,
         struct zwp_primary_selection_offer_v1 *primary_selection_offer) {
     for (size_t i = 0; i < arraysz(_glfw.wl.primarySelectionOffers); i++) {
         if (_glfw.wl.primarySelectionOffers[i].id == primary_selection_offer) {
@@ -1620,7 +1619,7 @@ static void set_offer_mimetype(struct _GLFWWaylandDataOffer* offer, const char*
         offer->has_uri_list = 1;
 }
 
-static void handle_offer_mimetype(void *data, struct wl_data_offer* id, const char *mime) {
+static void handle_offer_mimetype(void *data UNUSED, struct wl_data_offer* id, const char *mime) {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].id == id) {
             set_offer_mimetype(&_glfw.wl.dataOffers[i], mime);
@@ -1629,7 +1628,7 @@ static void handle_offer_mimetype(void *data, struct wl_data_offer* id, const ch
     }
 }
 
-static void handle_primary_selection_offer_mimetype(void *data, struct zwp_primary_selection_offer_v1* id, const char *mime) {
+static void handle_primary_selection_offer_mimetype(void *data UNUSED, struct zwp_primary_selection_offer_v1* id, const char *mime) {
     for (size_t i = 0; i < arraysz(_glfw.wl.primarySelectionOffers); i++) {
         if (_glfw.wl.primarySelectionOffers[i].id == id) {
             set_offer_mimetype((struct _GLFWWaylandDataOffer*)&_glfw.wl.primarySelectionOffers[i], mime);
@@ -1638,7 +1637,7 @@ static void handle_primary_selection_offer_mimetype(void *data, struct zwp_prima
     }
 }
 
-static void data_offer_source_actions(void *data, struct wl_data_offer* id, uint32_t actions) {
+static void data_offer_source_actions(void *data UNUSED, struct wl_data_offer* id, uint32_t actions) {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].id == id) {
             _glfw.wl.dataOffers[i].source_actions = actions;
@@ -1647,7 +1646,7 @@ static void data_offer_source_actions(void *data, struct wl_data_offer* id, uint
     }
 }
 
-static void data_offer_action(void *data, struct wl_data_offer* id, uint32_t action) {
+static void data_offer_action(void *data UNUSED, struct wl_data_offer* id, uint32_t action) {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].id == id) {
             _glfw.wl.dataOffers[i].dnd_action = action;
@@ -1667,7 +1666,7 @@ static const struct zwp_primary_selection_offer_v1_listener primary_selection_of
     .offer = handle_primary_selection_offer_mimetype,
 };
 
-static void handle_data_offer(void *data, struct wl_data_device *wl_data_device, struct wl_data_offer *id) {
+static void handle_data_offer(void *data UNUSED, struct wl_data_device *wl_data_device UNUSED, struct wl_data_offer *id) {
     size_t smallest_idx = SIZE_MAX, pos = 0;
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].idx && _glfw.wl.dataOffers[i].idx < smallest_idx) {
@@ -1688,7 +1687,7 @@ end:
     wl_data_offer_add_listener(id, &data_offer_listener, NULL);
 }
 
-static void handle_primary_selection_offer(void *data, struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1, struct zwp_primary_selection_offer_v1 *id) {
+static void handle_primary_selection_offer(void *data UNUSED, struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1 UNUSED, struct zwp_primary_selection_offer_v1 *id) {
     size_t smallest_idx = SIZE_MAX, pos = 0;
     for (size_t i = 0; i < arraysz(_glfw.wl.primarySelectionOffers); i++) {
         if (_glfw.wl.primarySelectionOffers[i].idx && _glfw.wl.primarySelectionOffers[i].idx < smallest_idx) {
@@ -1709,7 +1708,7 @@ end:
     zwp_primary_selection_offer_v1_add_listener(id, &primary_selection_offer_listener, NULL);
 }
 
-static void drag_enter(void *data, struct wl_data_device *wl_data_device, uint32_t serial, struct wl_surface *surface, wl_fixed_t x, wl_fixed_t y, struct wl_data_offer *id) {
+static void drag_enter(void *data UNUSED, struct wl_data_device *wl_data_device UNUSED, uint32_t serial, struct wl_surface *surface, wl_fixed_t x UNUSED, wl_fixed_t y UNUSED, struct wl_data_offer *id) {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].id == id) {
             _glfw.wl.dataOffers[i].offer_type = DRAG_AND_DROP;
@@ -1723,7 +1722,7 @@ static void drag_enter(void *data, struct wl_data_device *wl_data_device, uint32
     prune_unclaimed_data_offers();
 }
 
-static void drag_leave(void *data, struct wl_data_device *wl_data_device) {
+static void drag_leave(void *data UNUSED, struct wl_data_device *wl_data_device UNUSED) {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].offer_type == DRAG_AND_DROP) {
             wl_data_offer_destroy(_glfw.wl.dataOffers[i].id);
@@ -1732,7 +1731,7 @@ static void drag_leave(void *data, struct wl_data_device *wl_data_device) {
     }
 }
 
-static void drop(void *data, struct wl_data_device *wl_data_device) {
+static void drop(void *data, struct wl_data_device *wl_data_device UNUSED) {
     for (size_t i = 0; i < arraysz(_glfw.wl.dataOffers); i++) {
         if (_glfw.wl.dataOffers[i].offer_type == DRAG_AND_DROP) {
             char *uri_list = read_data_offer(_glfw.wl.dataOffers[i].id, URI_LIST_MIME);
@@ -1764,10 +1763,10 @@ static void drop(void *data, struct wl_data_device *wl_data_device) {
     }
 }
 
-static void motion(void *data, struct wl_data_device *wl_data_device, uint32_t time, wl_fixed_t x, wl_fixed_t y) {
+static void motion(void *data UNUSED, struct wl_data_device *wl_data_device UNUSED, uint32_t time UNUSED, wl_fixed_t x UNUSED, wl_fixed_t y UNUSED) {
 }
 
-const static struct wl_data_device_listener data_device_listener = {
+static const struct wl_data_device_listener data_device_listener = {
     .data_offer = handle_data_offer,
     .selection = mark_selection_offer,
     .enter = drag_enter,
@@ -1776,7 +1775,7 @@ const static struct wl_data_device_listener data_device_listener = {
     .leave = drag_leave,
 };
 
-const static struct zwp_primary_selection_device_v1_listener primary_selection_device_listener = {
+static const struct zwp_primary_selection_device_v1_listener primary_selection_device_listener = {
     .data_offer = handle_primary_selection_offer,
     .selection = mark_primary_selection_offer,
 };
@@ -1856,7 +1855,7 @@ void _glfwPlatformSetClipboardString(const char* string)
     wl_data_source_offer(_glfw.wl.dataSourceForClipboard, "STRING");
     wl_data_source_offer(_glfw.wl.dataSourceForClipboard, "UTF8_STRING");
     struct wl_callback *callback = wl_display_sync(_glfw.wl.display);
-    const static struct wl_callback_listener clipboard_copy_callback_listener = {.done = clipboard_copy_callback_done};
+    static const struct wl_callback_listener clipboard_copy_callback_listener = {.done = clipboard_copy_callback_done};
     wl_callback_add_listener(callback, &clipboard_copy_callback_listener, _glfw.wl.dataSourceForClipboard);
 }
 
@@ -1905,7 +1904,7 @@ void _glfwPlatformSetPrimarySelectionString(const char* string)
     zwp_primary_selection_source_v1_offer(_glfw.wl.dataSourceForPrimarySelection, "STRING");
     zwp_primary_selection_source_v1_offer(_glfw.wl.dataSourceForPrimarySelection, "UTF8_STRING");
     struct wl_callback *callback = wl_display_sync(_glfw.wl.display);
-    const static struct wl_callback_listener primary_selection_copy_callback_listener = {.done = primary_selection_copy_callback_done};
+    static const struct wl_callback_listener primary_selection_copy_callback_listener = {.done = primary_selection_copy_callback_done};
     wl_callback_add_listener(callback, &primary_selection_copy_callback_listener, _glfw.wl.dataSourceForPrimarySelection);
 }
 
@@ -1995,7 +1994,7 @@ _glfwPlatformUpdateIMEState(_GLFWwindow *w, int which, int a, int b, int c, int
 }
 
 static void
-frame_handle_redraw(void *data, struct wl_callback *callback, uint32_t time) {
+frame_handle_redraw(void *data, struct wl_callback *callback, uint32_t time UNUSED) {
     _GLFWwindow* window = (_GLFWwindow*) data;
     if (callback == window->wl.frameCallbackData.current_wl_callback) {
         window->wl.frameCallbackData.callback(window->wl.frameCallbackData.id);
@@ -2046,4 +2045,3 @@ GLFWAPI unsigned long long glfwDBusUserNotify(const char *app_name, const char*
 GLFWAPI void glfwDBusSetUserNotificationHandler(GLFWDBusnotificationactivatedfun handler) {
     glfw_dbus_set_user_notification_activated_handler(handler);
 }
-
diff --git a/glfw/x11_init.c b/glfw/x11_init.c
index 7d056a73c..bbb5c8b76 100644
--- a/glfw/x11_init.c
+++ b/glfw/x11_init.c
@@ -155,14 +155,10 @@ static bool initExtensions(void)
     _glfw.x11.vidmode.handle = _glfw_dlopen("libXxf86vm.so.1");
     if (_glfw.x11.vidmode.handle)
     {
-        _glfw.x11.vidmode.QueryExtension = (PFN_XF86VidModeQueryExtension)
-            _glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeQueryExtension");
-        _glfw.x11.vidmode.GetGammaRamp = (PFN_XF86VidModeGetGammaRamp)
-            _glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeGetGammaRamp");
-        _glfw.x11.vidmode.SetGammaRamp = (PFN_XF86VidModeSetGammaRamp)
-            _glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeSetGammaRamp");
-        _glfw.x11.vidmode.GetGammaRampSize = (PFN_XF86VidModeGetGammaRampSize)
-            _glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeGetGammaRampSize");
+        glfw_dlsym(_glfw.x11.vidmode.QueryExtension, _glfw.x11.vidmode.handle, "XF86VidModeQueryExtension");
+        glfw_dlsym(_glfw.x11.vidmode.GetGammaRamp, _glfw.x11.vidmode.handle, "XF86VidModeGetGammaRamp");
+        glfw_dlsym(_glfw.x11.vidmode.SetGammaRamp, _glfw.x11.vidmode.handle, "XF86VidModeSetGammaRamp");
+        glfw_dlsym(_glfw.x11.vidmode.GetGammaRampSize, _glfw.x11.vidmode.handle, "XF86VidModeGetGammaRampSize");
 
         _glfw.x11.vidmode.available =
             XF86VidModeQueryExtension(_glfw.x11.display,
@@ -177,10 +173,8 @@ static bool initExtensions(void)
 #endif
     if (_glfw.x11.xi.handle)
     {
-        _glfw.x11.xi.QueryVersion = (PFN_XIQueryVersion)
-            _glfw_dlsym(_glfw.x11.xi.handle, "XIQueryVersion");
-        _glfw.x11.xi.SelectEvents = (PFN_XISelectEvents)
-            _glfw_dlsym(_glfw.x11.xi.handle, "XISelectEvents");
+        glfw_dlsym(_glfw.x11.xi.QueryVersion, _glfw.x11.xi.handle, "XIQueryVersion");
+        glfw_dlsym(_glfw.x11.xi.SelectEvents, _glfw.x11.xi.handle, "XISelectEvents");
 
         if (XQueryExtension(_glfw.x11.display,
                             "XInputExtension",
@@ -207,42 +201,24 @@ static bool initExtensions(void)
 #endif
     if (_glfw.x11.randr.handle)
     {
-        _glfw.x11.randr.AllocGamma = (PFN_XRRAllocGamma)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRAllocGamma");
-        _glfw.x11.randr.FreeGamma = (PFN_XRRFreeGamma)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeGamma");
-        _glfw.x11.randr.FreeCrtcInfo = (PFN_XRRFreeCrtcInfo)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeCrtcInfo");
-        _glfw.x11.randr.FreeGamma = (PFN_XRRFreeGamma)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeGamma");
-        _glfw.x11.randr.FreeOutputInfo = (PFN_XRRFreeOutputInfo)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeOutputInfo");
-        _glfw.x11.randr.FreeScreenResources = (PFN_XRRFreeScreenResources)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeScreenResources");
-        _glfw.x11.randr.GetCrtcGamma = (PFN_XRRGetCrtcGamma)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRGetCrtcGamma");
-        _glfw.x11.randr.GetCrtcGammaSize = (PFN_XRRGetCrtcGammaSize)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRGetCrtcGammaSize");
-        _glfw.x11.randr.GetCrtcInfo = (PFN_XRRGetCrtcInfo)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRGetCrtcInfo");
-        _glfw.x11.randr.GetOutputInfo = (PFN_XRRGetOutputInfo)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRGetOutputInfo");
-        _glfw.x11.randr.GetOutputPrimary = (PFN_XRRGetOutputPrimary)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRGetOutputPrimary");
-        _glfw.x11.randr.GetScreenResourcesCurrent = (PFN_XRRGetScreenResourcesCurrent)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRGetScreenResourcesCurrent");
-        _glfw.x11.randr.QueryExtension = (PFN_XRRQueryExtension)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRQueryExtension");
-        _glfw.x11.randr.QueryVersion = (PFN_XRRQueryVersion)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRQueryVersion");
-        _glfw.x11.randr.SelectInput = (PFN_XRRSelectInput)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRSelectInput");
-        _glfw.x11.randr.SetCrtcConfig = (PFN_XRRSetCrtcConfig)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRSetCrtcConfig");
-        _glfw.x11.randr.SetCrtcGamma = (PFN_XRRSetCrtcGamma)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRSetCrtcGamma");
-        _glfw.x11.randr.UpdateConfiguration = (PFN_XRRUpdateConfiguration)
-            _glfw_dlsym(_glfw.x11.randr.handle, "XRRUpdateConfiguration");
+        glfw_dlsym(_glfw.x11.randr.AllocGamma, _glfw.x11.randr.handle, "XRRAllocGamma");
+        glfw_dlsym(_glfw.x11.randr.FreeGamma, _glfw.x11.randr.handle, "XRRFreeGamma");
+        glfw_dlsym(_glfw.x11.randr.FreeCrtcInfo, _glfw.x11.randr.handle, "XRRFreeCrtcInfo");
+        glfw_dlsym(_glfw.x11.randr.FreeGamma, _glfw.x11.randr.handle, "XRRFreeGamma");
+        glfw_dlsym(_glfw.x11.randr.FreeOutputInfo, _glfw.x11.randr.handle, "XRRFreeOutputInfo");
+        glfw_dlsym(_glfw.x11.randr.FreeScreenResources, _glfw.x11.randr.handle, "XRRFreeScreenResources");
+        glfw_dlsym(_glfw.x11.randr.GetCrtcGamma, _glfw.x11.randr.handle, "XRRGetCrtcGamma");
+        glfw_dlsym(_glfw.x11.randr.GetCrtcGammaSize, _glfw.x11.randr.handle, "XRRGetCrtcGammaSize");
+        glfw_dlsym(_glfw.x11.randr.GetCrtcInfo, _glfw.x11.randr.handle, "XRRGetCrtcInfo");
+        glfw_dlsym(_glfw.x11.randr.GetOutputInfo, _glfw.x11.randr.handle, "XRRGetOutputInfo");
+        glfw_dlsym(_glfw.x11.randr.GetOutputPrimary, _glfw.x11.randr.handle, "XRRGetOutputPrimary");
+        glfw_dlsym(_glfw.x11.randr.GetScreenResourcesCurrent, _glfw.x11.randr.handle, "XRRGetScreenResourcesCurrent");
+        glfw_dlsym(_glfw.x11.randr.QueryExtension, _glfw.x11.randr.handle, "XRRQueryExtension");
+        glfw_dlsym(_glfw.x11.randr.QueryVersion, _glfw.x11.randr.handle, "XRRQueryVersion");
+        glfw_dlsym(_glfw.x11.randr.SelectInput, _glfw.x11.randr.handle, "XRRSelectInput");
+        glfw_dlsym(_glfw.x11.randr.SetCrtcConfig, _glfw.x11.randr.handle, "XRRSetCrtcConfig");
+        glfw_dlsym(_glfw.x11.randr.SetCrtcGamma, _glfw.x11.randr.handle, "XRRSetCrtcGamma");
+        glfw_dlsym(_glfw.x11.randr.UpdateConfiguration, _glfw.x11.randr.handle, "XRRUpdateConfiguration");
 
         if (XRRQueryExtension(_glfw.x11.display,
                               &_glfw.x11.randr.eventBase,
@@ -299,12 +275,9 @@ static bool initExtensions(void)
 #endif
     if (_glfw.x11.xcursor.handle)
     {
-        _glfw.x11.xcursor.ImageCreate = (PFN_XcursorImageCreate)
-            _glfw_dlsym(_glfw.x11.xcursor.handle, "XcursorImageCreate");
-        _glfw.x11.xcursor.ImageDestroy = (PFN_XcursorImageDestroy)
-            _glfw_dlsym(_glfw.x11.xcursor.handle, "XcursorImageDestroy");
-        _glfw.x11.xcursor.ImageLoadCursor = (PFN_XcursorImageLoadCursor)
-            _glfw_dlsym(_glfw.x11.xcursor.handle, "XcursorImageLoadCursor");
+        glfw_dlsym(_glfw.x11.xcursor.ImageCreate, _glfw.x11.xcursor.handle, "XcursorImageCreate");
+        glfw_dlsym(_glfw.x11.xcursor.ImageDestroy, _glfw.x11.xcursor.handle, "XcursorImageDestroy");
+        glfw_dlsym(_glfw.x11.xcursor.ImageLoadCursor, _glfw.x11.xcursor.handle, "XcursorImageLoadCursor");
     }
 
 #if defined(__CYGWIN__)
@@ -314,12 +287,9 @@ static bool initExtensions(void)
 #endif
     if (_glfw.x11.xinerama.handle)
     {
-        _glfw.x11.xinerama.IsActive = (PFN_XineramaIsActive)
-            _glfw_dlsym(_glfw.x11.xinerama.handle, "XineramaIsActive");
-        _glfw.x11.xinerama.QueryExtension = (PFN_XineramaQueryExtension)
-            _glfw_dlsym(_glfw.x11.xinerama.handle, "XineramaQueryExtension");
-        _glfw.x11.xinerama.QueryScreens = (PFN_XineramaQueryScreens)
-            _glfw_dlsym(_glfw.x11.xinerama.handle, "XineramaQueryScreens");
+        glfw_dlsym(_glfw.x11.xinerama.IsActive, _glfw.x11.xinerama.handle, "XineramaIsActive");
+        glfw_dlsym(_glfw.x11.xinerama.QueryExtension, _glfw.x11.xinerama.handle, "XineramaQueryExtension");
+        glfw_dlsym(_glfw.x11.xinerama.QueryScreens, _glfw.x11.xinerama.handle, "XineramaQueryScreens");
 
         if (XineramaQueryExtension(_glfw.x11.display,
                                    &_glfw.x11.xinerama.major,
@@ -337,12 +307,9 @@ static bool initExtensions(void)
 #endif
     if (_glfw.x11.xrender.handle)
     {
-        _glfw.x11.xrender.QueryExtension = (PFN_XRenderQueryExtension)
-            _glfw_dlsym(_glfw.x11.xrender.handle, "XRenderQueryExtension");
-        _glfw.x11.xrender.QueryVersion = (PFN_XRenderQueryVersion)
-            _glfw_dlsym(_glfw.x11.xrender.handle, "XRenderQueryVersion");
-        _glfw.x11.xrender.FindVisualFormat = (PFN_XRenderFindVisualFormat)
-            _glfw_dlsym(_glfw.x11.xrender.handle, "XRenderFindVisualFormat");
+        glfw_dlsym(_glfw.x11.xrender.QueryExtension, _glfw.x11.xrender.handle, "XRenderQueryExtension");
+        glfw_dlsym(_glfw.x11.xrender.QueryVersion, _glfw.x11.xrender.handle, "XRenderQueryVersion");
+        glfw_dlsym(_glfw.x11.xrender.FindVisualFormat, _glfw.x11.xrender.handle, "XRenderFindVisualFormat");
 
         if (XRenderQueryExtension(_glfw.x11.display,
                                   &_glfw.x11.xrender.errorBase,
@@ -536,7 +503,7 @@ static Window createHelperWindow(void)
 
 // X error handler
 //
-static int errorHandler(Display *display, XErrorEvent* event)
+static int errorHandler(Display *display UNUSED, XErrorEvent* event)
 {
     _glfw.x11.errorCode = event->error_code;
     return 0;
diff --git a/glfw/x11_monitor.c b/glfw/x11_monitor.c
index 55e37c489..b247b23a6 100644
--- a/glfw/x11_monitor.c
+++ b/glfw/x11_monitor.c
@@ -172,8 +172,8 @@ void _glfwPollMonitorsX11(void)
             {
                 if (screens[j].x_org == ci->x &&
                     screens[j].y_org == ci->y &&
-                    screens[j].width == ci->width &&
-                    screens[j].height == ci->height)
+                    screens[j].width == (short int)ci->width &&
+                    screens[j].height == (short int)ci->height)
                 {
                     monitor->x11.index = j;
                     break;
@@ -301,7 +301,7 @@ void _glfwRestoreVideoModeX11(_GLFWmonitor* monitor)
 //////                       GLFW platform API                      //////
 //////////////////////////////////////////////////////////////////////////
 
-void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor)
+void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor UNUSED)
 {
 }
 
@@ -325,7 +325,7 @@ void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)
     }
 }
 
-void _glfwPlatformGetMonitorContentScale(_GLFWmonitor* monitor,
+void _glfwPlatformGetMonitorContentScale(_GLFWmonitor* monitor UNUSED,
                                          float* xscale, float* yscale)
 {
     if (xscale)
@@ -547,7 +547,7 @@ void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
 {
     if (_glfw.x11.randr.available && !_glfw.x11.randr.gammaBroken)
     {
-        if (XRRGetCrtcGammaSize(_glfw.x11.display, monitor->x11.crtc) != ramp->size)
+        if (XRRGetCrtcGammaSize(_glfw.x11.display, monitor->x11.crtc) != (int)ramp->size)
         {
             _glfwInputError(GLFW_PLATFORM_ERROR,
                             "X11: Gamma ramp size must match current ramp size");
diff --git a/glfw/x11_window.c b/glfw/x11_window.c
index 9e046122a..6415141fa 100644
--- a/glfw/x11_window.c
+++ b/glfw/x11_window.c
@@ -139,7 +139,7 @@ static int getWindowState(_GLFWwindow* window)
 
 // Returns whether the event is a selection event
 //
-static Bool isSelectionEvent(Display* display, XEvent* event, XPointer pointer)
+static Bool isSelectionEvent(Display* display UNUSED, XEvent* event, XPointer pointer UNUSED)
 {
     if (event->xany.window != _glfw.x11.helperWindowHandle)
         return False;
@@ -151,7 +151,7 @@ static Bool isSelectionEvent(Display* display, XEvent* event, XPointer pointer)
 
 // Returns whether it is a _NET_FRAME_EXTENTS event for the specified window
 //
-static Bool isFrameExtentsEvent(Display* display, XEvent* event, XPointer pointer)
+static Bool isFrameExtentsEvent(Display* display UNUSED, XEvent* event, XPointer pointer)
 {
     _GLFWwindow* window = (_GLFWwindow*) pointer;
     return event->type == PropertyNotify &&
@@ -162,7 +162,7 @@ static Bool isFrameExtentsEvent(Display* display, XEvent* event, XPointer pointe
 
 // Returns whether it is a property event for the specified selection transfer
 //
-static Bool isSelPropNewValueNotify(Display* display, XEvent* event, XPointer pointer)
+static Bool isSelPropNewValueNotify(Display* display UNUSED, XEvent* event, XPointer pointer)
 {
     XEvent* notification = (XEvent*) pointer;
     return event->type == PropertyNotify &&
@@ -326,8 +326,7 @@ set_fullscreen(_GLFWwindow *window, bool on) {
 }
 
 bool
-_glfwPlatformToggleFullscreen(_GLFWwindow *window, unsigned int flags) {
-    (void) flags;
+_glfwPlatformToggleFullscreen(_GLFWwindow *window, unsigned int flags UNUSED) {
     bool already_fullscreen = is_window_fullscreen(window);
     set_fullscreen(window, !already_fullscreen);
     return !already_fullscreen;
@@ -2010,8 +2009,8 @@ void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
 }
 
 void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
-                                      int minwidth, int minheight,
-                                      int maxwidth, int maxheight)
+                                      int minwidth UNUSED, int minheight UNUSED,
+                                      int maxwidth UNUSED, int maxheight UNUSED)
 {
     int width, height;
     _glfwPlatformGetWindowSize(window, &width, &height);
@@ -2019,7 +2018,7 @@ void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
     XFlush(_glfw.x11.display);
 }
 
-void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom)
+void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer UNUSED, int denom UNUSED)
 {
     int width, height;
     _glfwPlatformGetWindowSize(window, &width, &height);
@@ -2092,7 +2091,7 @@ void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
         XFree(extents);
 }
 
-void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
+void _glfwPlatformGetWindowContentScale(_GLFWwindow* window UNUSED,
                                         float* xscale, float* yscale)
 {
     if (xscale)
@@ -2101,7 +2100,7 @@ void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
         *yscale = _glfw.x11.contentScaleY;
 }
 
-double _glfwPlatformGetDoubleClickInterval(_GLFWwindow* window)
+double _glfwPlatformGetDoubleClickInterval(_GLFWwindow* window UNUSED)
 {
     return 0.5;
 }
@@ -2200,7 +2199,7 @@ void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
                                    _GLFWmonitor* monitor,
                                    int xpos, int ypos,
                                    int width, int height,
-                                   int refreshRate)
+                                   int refreshRate UNUSED)
 {
     if (window->monitor == monitor)
     {
@@ -2258,7 +2257,7 @@ int _glfwPlatformWindowFocused(_GLFWwindow* window)
     return window->x11.handle == focused;
 }
 
-int _glfwPlatformWindowOccluded(_GLFWwindow* window)
+int _glfwPlatformWindowOccluded(_GLFWwindow* window UNUSED)
 {
     return false;
 }
@@ -2339,7 +2338,7 @@ int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
     return XGetSelectionOwner(_glfw.x11.display, _glfw.x11.NET_WM_CM_Sx) != None;
 }
 
-void _glfwPlatformSetWindowResizable(_GLFWwindow* window, bool enabled)
+void _glfwPlatformSetWindowResizable(_GLFWwindow* window, bool enabled UNUSED)
 {
     int width, height;
     _glfwPlatformGetWindowSize(window, &width, &height);
@@ -2597,7 +2596,7 @@ int _glfwPlatformGetKeyScancode(int key)
 
 int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
                               const GLFWimage* image,
-                              int xhot, int yhot, int count)
+                              int xhot, int yhot, int count UNUSED)
 {
     cursor->x11.handle = _glfwCreateCursorX11(image, xhot, yhot);
     if (!cursor->x11.handle)
@@ -2643,7 +2642,7 @@ void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
         XFreeCursor(_glfw.x11.display, cursor->x11.handle);
 }
 
-void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
+void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor UNUSED)
 {
     if (window->cursorMode == GLFW_CURSOR_NORMAL)
     {
diff --git a/glfw/xkb_glfw.c b/glfw/xkb_glfw.c
index 386668be7..19626f090 100644
--- a/glfw/xkb_glfw.c
+++ b/glfw/xkb_glfw.c
@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include "internal.h"
 #include "xkb_glfw.h"
+START_ALLOW_CASE_RANGE
 
 #define debug(...) if (_glfw.hints.init.debugKeyboard) printf(__VA_ARGS__);
 
@@ -101,7 +102,7 @@ glfw_key_for_sym(xkb_keysym_t key) {
 #define S(f, t) case XKB_KEY_##f: return GLFW_KEY_##t
 #define F(f, t) S(f, t)
 #define R(s, e, gs, ...) case XKB_KEY_##s ... XKB_KEY_##e: return GLFW_KEY_##gs + key - XKB_KEY_##s
-#define D(s, e, gs, ...) R(s, e, gs)
+#define D(s, e, gs, ...) R(s, e, gs, __VA_ARGS__)
     map_key(key)
         S(KP_Up, UP);
         S(KP_Down, DOWN);
@@ -115,7 +116,7 @@ glfw_key_for_sym(xkb_keysym_t key) {
 #undef D
 #undef R
 #undef S
-};
+}
 
 xkb_keysym_t
 glfw_xkb_sym_for_key(int key) {
@@ -133,6 +134,7 @@ glfw_xkb_sym_for_key(int key) {
 #undef R
 #undef S
 }
+END_ALLOW_CASE_RANGE
 
 #ifdef _GLFW_X11
 
@@ -167,7 +169,7 @@ glfw_xkb_update_x11_keyboard_id(_GLFWXKBData *xkb) {
     if (conn) keymap = xkb_x11_keymap_new_from_device(xkb->context, conn, xkb->keyboard_device_id, XKB_KEYMAP_COMPILE_NO_FLAGS); \
 }
 
-#define xkb_glfw_load_state(keymap, state, ...) {\
+#define xkb_glfw_load_state(keymap, state) {\
     xcb_connection_t* conn = XGetXCBConnection(_glfw.x11.display); \
     if (conn) state = xkb_x11_state_new_from_device(keymap, conn, xkb->keyboard_device_id); \
 }
@@ -175,7 +177,7 @@ glfw_xkb_update_x11_keyboard_id(_GLFWXKBData *xkb) {
 #else
 
 #define xkb_glfw_load_keymap(keymap, map_str) keymap = xkb_keymap_new_from_string(xkb->context, map_str, XKB_KEYMAP_FORMAT_TEXT_V1, 0);
-#define xkb_glfw_load_state(keymap, state, ...) state = xkb_state_new(keymap);
+#define xkb_glfw_load_state(keymap, state) state = xkb_state_new(keymap);
 
 #endif
 
@@ -335,7 +337,7 @@ glfw_xkb_should_repeat(_GLFWXKBData *xkb, xkb_keycode_t scancode) {
 }
 
 
-static KeyEvent key_event = {};
+static KeyEvent key_event = {0};
 
 static inline xkb_keysym_t
 compose_symbol(struct xkb_compose_state *composeState, xkb_keysym_t sym, int *compose_completed) {