diff --git a/.gitattributes b/.gitattributes
index ee91af0..43d16e6 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -14,3 +14,6 @@
 /resource/doxygen-theme/* linguist-generated
 /src/icon/*.c linguist-generated
 /src/font/*.c linguist-generated
+/BorMakefile linguist-generated
+/WatMakefile linguist-generated
+/NTMakefile linguist-generated
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 76e579d..7f5ace3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ option(USE_FDLIBM "Use fdlibm" OFF)
 file(
 	GLOB
 	SOURCES
-	src/*.c src/cursor/*.c src/icon/*.c src/text/*.c src/widget/*.c external/*.c
+	src/*.c src/cursor/*.c src/icon/*.c src/text.c src/widget/*.c src/math/*.c src/font/*.c src/color_picker/*.c external/*.c
 )
 
 if(NOT OPENGL)
@@ -153,6 +153,12 @@ else()
 	endif()
 endif()
 
+set_source_files_properties(
+	src/math/mmx.c
+	PROPERTIES
+	COMPILE_FLAGS -mmmx
+)
+
 target_include_directories(
 	Mw
 	PRIVATE
diff --git a/GNUmakefile b/GNUmakefile
index 08051ca..1394a24 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -76,6 +76,9 @@ examples/gldemos/%$(EXEC): examples/gldemos/%.o src/$(LIB)Mw$(SO)
 examples/%$(EXEC): examples/%.o src/$(LIB)Mw$(SO)
 	$(CC) $(E_LDFLAGS) -o $@ $< $(E_LIBS)
 
+src/math/mmx.o: src/math/mmx.c
+	$(CC) $(L_CFLAGS) -mmmx -c -o $@ $<
+
 src/%.o: src/%.c
 	$(CC) $(L_CFLAGS) -c -o $@ $<
 
diff --git a/mk/platform.mk b/mk/platform.mk
index 59f18ac..3bb4900 100644
--- a/mk/platform.mk
+++ b/mk/platform.mk
@@ -27,8 +27,6 @@ FOUND_PLATFORM = 1
 endif
 
 ifeq ($(TARGET),Windows)
-CFLAGS += -mmmx
-
 WINDOWS = 1
 OPENGL = 1
 VULKAN = 1