For mingw builds, define GLEW_BUILD unconditionally for shared libs only.

Makefile

@@ -125,7 +125,7 @@ tmp/$(SYSTEM)/default/static/glew.o: src/glew.c include/GL/glew.h include/GL/wgl
 
 tmp/$(SYSTEM)/default/shared/glew.o: src/glew.c include/GL/glew.h include/GL/wglew.h include/GL/glxew.h
 	@mkdir -p $(dir $@)
-	$(CC) -DGLEW_NO_GLU $(CFLAGS) $(CFLAGS.SO) -o $@ -c $<
+	$(CC) -DGLEW_NO_GLU -DGLEW_BUILD $(CFLAGS) $(CFLAGS.SO) -o $@ -c $<
 
 # Force re-write of glew.pc, GLEW_DEST can vary
 
@@ -166,7 +166,7 @@ tmp/$(SYSTEM)/mx/static/glew.o: src/glew.c include/GL/glew.h include/GL/wglew.h
 
 tmp/$(SYSTEM)/mx/shared/glew.o: src/glew.c include/GL/glew.h include/GL/wglew.h include/GL/glxew.h
 	@mkdir -p $(dir $@)
-	$(CC) -DGLEW_NO_GLU -DGLEW_MX $(CFLAGS) $(CFLAGS.SO) -o $@ -c $<
+	$(CC) -DGLEW_NO_GLU -DGLEW_MX -DGLEW_BUILD $(CFLAGS) $(CFLAGS.SO) -o $@ -c $<
 
 # Force re-write of glewmx.pc, GLEW_DEST can vary
 

config/Makefile.cygming

@@ -7,7 +7,6 @@ INCDIR = /usr/include/mingw/GL
 CC := gcc -mno-cygwin
 LD := gcc -mno-cygwin
 LN :=
-CFLAGS.SO = -DGLEW_BUILD
 LDFLAGS.GL = -lopengl32 -lgdi32 -luser32 -lkernel32
 LDFLAGS.EXTRA = -L$(LIBDIR)
 WARN = -Wall -W
@@ -16,10 +15,10 @@ BIN.SUFFIX = .exe
 LIB.SONAME    = lib$(NAME).dll
 LIB.DEVLNK    = lib$(NAME).dll.a   # for mingw this is the dll import lib
 LIB.SHARED    = $(NAME).dll
-LIB.STATIC    = lib$(NAME).a       # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC    = lib$(NAME).a       # the static lib will be broken
 LDFLAGS.SO    = -shared -Wl,-soname,$(LIB.SONAME) -Wl,--out-implib,lib/$(LIB.DEVLNK)
 LIB.SONAME.MX = lib$(NAME)mx.dll
 LIB.DEVLNK.MX = lib$(NAME)mx.dll.a # for mingw this is the dll import lib
 LIB.SHARED.MX = $(NAME)mx.dll
-LIB.STATIC.MX = lib$(NAME)mx.a     # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC.MX = lib$(NAME)mx.a     # the static lib will be broken
 LDFLAGS.SO.MX = -shared -Wl,-soname,$(LIB.SONAME.MX) -Wl,--out-implib,lib/$(LIB.DEVLNK.MX)

config/Makefile.linux-mingw-w64

@@ -9,7 +9,6 @@ CC    := i686-w64-mingw32-gcc
 LD    := i686-w64-mingw32-ld
 LN    :=
 STRIP :=
-CFLAGS.SO = -DGLEW_BUILD
 LDFLAGS.GL = -lopengl32 -lgdi32 -luser32 -lkernel32
 WARN = -Wall -W
 POPT = -O2
@@ -17,10 +16,10 @@ BIN.SUFFIX = .exe
 LIB.SONAME    = lib$(NAME).dll
 LIB.DEVLNK    = lib$(NAME).dll.a    # for mingw this is the dll import lib
 LIB.SHARED    = $(NAME).dll
-LIB.STATIC    = lib$(NAME).a        # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC    = lib$(NAME).a        # the static lib will be broken
 LDFLAGS.SO    = -shared -soname $(LIB.SONAME) --out-implib lib/$(LIB.DEVLNK)
 LIB.SONAME.MX = lib$(NAME)mx.dll
 LIB.DEVLNK.MX = lib$(NAME)mx.dll.a  # for mingw this is the dll import lib
 LIB.SHARED.MX = $(NAME)mx.dll
-LIB.STATIC.MX = lib$(NAME)mx.a      # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC.MX = lib$(NAME)mx.a      # the static lib will be broken
 LDFLAGS.SO.MX = -shared -soname $(LIB.SONAME.MX) --out-implib lib/$(LIB.DEVLNK.MX)

config/Makefile.linux-mingw32

@@ -9,7 +9,6 @@ CC    := i586-mingw32msvc-gcc
 LD    := i586-mingw32msvc-ld
 LN    :=
 STRIP :=
-CFLAGS.SO = -DGLEW_BUILD
 LDFLAGS.GL = -lopengl32 -lgdi32 -luser32 -lkernel32
 WARN = -Wall -W
 POPT = -O2
@@ -17,10 +16,10 @@ BIN.SUFFIX = .exe
 LIB.SONAME    = lib$(NAME).dll
 LIB.DEVLNK    = lib$(NAME).dll.a    # for mingw this is the dll import lib
 LIB.SHARED    = $(NAME).dll
-LIB.STATIC    = lib$(NAME).a        # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC    = lib$(NAME).a        # the static lib will be broken
 LDFLAGS.SO    = -shared -soname $(LIB.SONAME) --out-implib lib/$(LIB.DEVLNK)
 LIB.SONAME.MX = lib$(NAME)mx.dll
 LIB.DEVLNK.MX = lib$(NAME)mx.dll.a  # for mingw this is the dll import lib
 LIB.SHARED.MX = $(NAME)mx.dll
-LIB.STATIC.MX = lib$(NAME)mx.a      # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC.MX = lib$(NAME)mx.a      # the static lib will be broken
 LDFLAGS.SO.MX = -shared -soname $(LIB.SONAME.MX) --out-implib lib/$(LIB.DEVLNK.MX)

config/Makefile.linux-mingw64

@@ -5,11 +5,10 @@
 #
 
 NAME  := glew32
-CC    := amd64-mingw32msvc-gcc
-LD    := amd64-mingw32msvc-ld
+CC    := i686-w64-mingw32-gcc
+LD    := i686-w64-mingw32-ld
 LN    :=
 STRIP :=
-CFLAGS.SO = -DGLEW_BUILD
 LDFLAGS.GL = -lopengl32 -lgdi32 -luser32 -lkernel32
 WARN = -Wall -W
 POPT = -O2
@@ -17,10 +16,10 @@ BIN.SUFFIX = .exe
 LIB.SONAME    = lib$(NAME).dll
 LIB.DEVLNK    = lib$(NAME).dll.a    # for mingw this is the dll import lib
 LIB.SHARED    = $(NAME).dll
-LIB.STATIC    = lib$(NAME).a        # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC    = lib$(NAME).a        # the static lib will be broken
 LDFLAGS.SO    = -shared -soname $(LIB.SONAME) --out-implib lib/$(LIB.DEVLNK)
 LIB.SONAME.MX = lib$(NAME)mx.dll
 LIB.DEVLNK.MX = lib$(NAME)mx.dll.a  # for mingw this is the dll import lib
 LIB.SHARED.MX = $(NAME)mx.dll
-LIB.STATIC.MX = lib$(NAME)mx.a      # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC.MX = lib$(NAME)mx.a      # the static lib will be broken
 LDFLAGS.SO.MX = -shared -soname $(LIB.SONAME.MX) --out-implib lib/$(LIB.DEVLNK.MX)

config/Makefile.mingw

@@ -3,7 +3,6 @@ NAME = glew32
 CC := gcc
 LD := gcc
 LN :=
-CFLAGS.SO = -DGLEW_BUILD
 LDFLAGS.GL = -lopengl32 -lgdi32 -luser32 -lkernel32
 LDFLAGS.EXTRA = -L/mingw/lib
 WARN = -Wall -W
@@ -12,10 +11,10 @@ BIN.SUFFIX = .exe
 LIB.SONAME    = lib$(NAME).dll
 LIB.DEVLNK    = lib$(NAME).dll.a   # for mingw this is the dll import lib
 LIB.SHARED    = $(NAME).dll
-LIB.STATIC    = lib$(NAME).a       # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC    = lib$(NAME).a       # the static lib will be broken
 LDFLAGS.SO    = -shared -Wl,-soname,$(LIB.SONAME) -Wl,--out-implib,lib/$(LIB.DEVLNK)
 LIB.SONAME.MX = lib$(NAME)mx.dll
 LIB.DEVLNK.MX = lib$(NAME)mx.dll.a # for mingw this is the dll import lib
 LIB.SHARED.MX = $(NAME)mx.dll
-LIB.STATIC.MX = lib$(NAME)mx.a     # the static lib will be broken (see CFLAGS.SO)
+LIB.STATIC.MX = lib$(NAME)mx.a     # the static lib will be broken
 LDFLAGS.SO.MX = -shared -Wl,-soname,$(LIB.SONAME.MX) -Wl,--out-implib,lib/$(LIB.DEVLNK.MX)