diff --git a/buildconfig/Setup.SDL2.in b/buildconfig/Setup.SDL2.in
index 8a6afa1..d834f33 100644
--- a/buildconfig/Setup.SDL2.in
+++ b/buildconfig/Setup.SDL2.in
@@ -39,9 +39,9 @@ _sdl2.mixer src_c/_sdl2/mixer.c $(SDL) $(MIXER) $(DEBUG) -Isrc_c
 _sdl2.touch src_c/_sdl2/touch.c $(SDL) $(DEBUG) -Isrc_c
 _sdl2.controller src_c/_sdl2/controller.c $(SDL) $(DEBUG) -Isrc_c
 
-GFX = src_c/SDL_gfx/SDL_gfxPrimitives.c
+GFX = src_c/SDL_gfx/SDL_gfxPrimitives.c -lm
 #GFX = src_c/SDL_gfx/SDL_gfxBlitFunc.c src_c/SDL_gfx/SDL_gfxPrimitives.c
-gfxdraw src_c/gfxdraw.c $(SDL) $(GFX) $(DEBUG)
+gfxdraw src_c/gfxdraw.c -lm $(SDL) $(GFX) $(DEBUG)
 
 #optional freetype module (do not break in multiple lines
 #or the configuration script will choke!)
@@ -53,7 +53,7 @@ _sprite src_c/_sprite.c $(SDL) $(DEBUG)
 #SDL as a dependency. these should not be altered
 
 base src_c/base.c $(SDL) $(DEBUG)
-color src_c/color.c $(SDL) $(DEBUG)
+color src_c/color.c -lm $(SDL) $(DEBUG)
 constants src_c/constants.c $(SDL) $(DEBUG)
 display src_c/display.c $(SDL) $(DEBUG)
 event src_c/event.c $(SDL) $(DEBUG)
@@ -66,12 +66,12 @@ surface src_c/surface.c src_c/alphablit.c src_c/surface_fill.c $(SDL) $(DEBUG)
 surflock src_c/surflock.c $(SDL) $(DEBUG)
 time src_c/time.c $(SDL) $(DEBUG)
 joystick src_c/joystick.c $(SDL) $(DEBUG)
-draw src_c/draw.c $(SDL) $(DEBUG)
+draw src_c/draw.c -lm $(SDL) $(DEBUG)
 image src_c/image.c $(SDL) $(DEBUG)
-transform src_c/transform.c src_c/rotozoom.c src_c/scale2x.c src_c/scale_mmx.c $(SDL) $(DEBUG)
-mask src_c/mask.c src_c/bitmask.c $(SDL) $(DEBUG)
+transform src_c/transform.c src_c/rotozoom.c src_c/scale2x.c src_c/scale_mmx.c -lm $(SDL) $(DEBUG)
+mask src_c/mask.c src_c/bitmask.c -lm $(SDL) $(DEBUG)
 bufferproxy src_c/bufferproxy.c $(SDL) $(DEBUG)
-pixelarray src_c/pixelarray.c $(SDL) $(DEBUG)
-math src_c/math.c $(SDL) $(DEBUG)
+pixelarray src_c/pixelarray.c -lm $(SDL) $(DEBUG)
+math src_c/math.c -lm $(SDL) $(DEBUG)
 pixelcopy src_c/pixelcopy.c $(SDL) $(DEBUG)
 newbuffer src_c/newbuffer.c $(SDL) $(DEBUG)