--- a/Makefile.am
+++ b/Makefile.am
@@ -33,6 +33,7 @@
 	-release $(LT_RELEASE)	\
 	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 endif
+libSDL_ttf_la_LIBADD = @MATHLIB@
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = SDL_ttf.pc