diff --git a/makefile.basic b/makefile.basic
index 54e3340..2ee78a1 100644
--- a/makefile.basic
+++ b/makefile.basic
@@ -38,23 +38,23 @@ ifneq ($(WINDOWS),1)
 	CXX::=g++
 	LDLIBS::=
 	LDFLAGS::=
-	STRIP?=strip
-	RANLIB?=ranlib
-	AR?=ar
-	AS?=as
-else
+	STRIP::=strip
+	RANLIB::=ranlib
+	AR::=ar
+	AS::=as
+else #windows
 	#windows settings
 	MINGW_PREFIX::=x86_64-w64-mingw32-
 	CC::=$(MINGW_PREFIX)gcc
 	CXX::=$(MINGW_PREFIX)g++
 	LDLIBS::=
 	LDFLAGS::=
-	STRIP?=$(MINGW_PREFIX)strip
-	RANLIB?=$(MINGW_PREFIX)ranlib
-	AR?=$(MINGW_PREFIX)ar
-	AS?=$(MINGW_PREFIX)as
+	STRIP::=$(MINGW_PREFIX)strip
+	RANLIB::=$(MINGW_PREFIX)ranlib
+	AR::=$(MINGW_PREFIX)ar
+	AS::=$(MINGW_PREFIX)as
 	MAIN_EXECUTABLE::=$(MAIN_EXECUTABLE).exe
-endif
+endif #windows
 
 ifeq ($(OS),Windows_NT)
 	#windows' cmd commands
@@ -83,11 +83,11 @@ endif
 
 ifeq ($(RELEASE),1)
 	#a lot of false strict aliasing warnings from gcc 9
-	COMPLIER_FLAGS+=-O2 -Wno-strict-aliasing
+	COMPILER_FLAGS+=-O2 -Wno-strict-aliasing
 else ifeq ($(MEMCHK),1)
 	#use asan to check memory leaks/invalid accesses
 	LDFLAGS+=-fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls
-	COMPLIER_FLAGS+=-O0 -g3 -ggdb -fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls
+	COMPILER_FLAGS+=-O0 -g3 -ggdb -fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls
 else
 	#default target
 	COMPILER_FLAGS+=-O0 -g3 -ggdb