media-libs/netpbm: fix compilation with clang -O2

Closes: https://bugs.gentoo.org/885561
Signed-off-by: Viorel Munteanu <ceamac@gentoo.org>

media-libs/netpbm/files/netpbm-11.1.0-fix-clang-O2.patch

@@ -0,0 +1,26 @@
+When compiling with clang and -O2, local variable origJmpbufP with value
+changed after setjmp contains garbage after longjmp.
+
+According to glibc documentation, making it volatile should have fixed the
+issue, but it didn't.  Static outside the function works.
+
+Bug: https://bugs.gentoo.org/885561
+
+--- a/lib/libpamread.c
++++ b/lib/libpamread.c
+@@ -25,6 +25,7 @@
+ #include "fileio.h"
+ #include "pam.h"
+ 
++static jmp_buf * origJmpbufP = NULL;
+ 
+ static void
+ readPbmRow(const struct pam * const pamP,
+@@ -35,7 +36,6 @@
+                  "It says PBM format, but 'depth' member is not 1.");
+     else {
+         jmp_buf jmpbuf;
+-        jmp_buf * origJmpbufP;
+         unsigned char * bitrow;
+ 
+         bitrow = (unsigned char *) pbm_allocrow(pbm_packed_bytes(pamP->width));

media-libs/netpbm/netpbm-11.1.0-r1.ebuild

@@ -42,16 +42,14 @@ RDEPEND="
 	)
 	rle? ( media-libs/urt:= )
 	svga? ( media-libs/svgalib )
-	tiff? ( >=media-libs/tiff-3.5.5:= )
+	tiff? ( media-libs/tiff )
 	xml? ( dev-libs/libxml2 )
 	X? ( x11-libs/libX11 )
 "
-
 DEPEND="
 	${RDEPEND}
 	x11-base/xorg-proto
 "
-
 BDEPEND="
 	app-arch/xz-utils
 	sys-devel/flex
@@ -61,6 +59,7 @@ BDEPEND="
 PATCHES=(
 	"${FILESDIR}"/netpbm-10.86.21-build.patch
 	"${FILESDIR}"/netpbm-11.0.0-misc-deps.patch
+	"${FILESDIR}"/netpbm-11.1.0-fix-clang-O2.patch
 )
 
 netpbm_libtype() {