https://bugzilla.libsdl.org/show_bug.cgi?id=1401
https://hg.libsdl.org/SDL_ttf/rev/e826b2504c66

--- Makefile.in.orig	2012-01-15 04:44:08 UTC
+++ Makefile.in
@@ -68,7 +68,7 @@ am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(p
 	"$(DESTDIR)$(libSDL_ttfincludedir)"
 libLTLIBRARIES_INSTALL = $(INSTALL)
 LTLIBRARIES = $(lib_LTLIBRARIES)
-libSDL_ttf_la_LIBADD =
+libSDL_ttf_la_LIBADD = @MATHLIB@
 am_libSDL_ttf_la_OBJECTS = SDL_ttf.lo
 libSDL_ttf_la_OBJECTS = $(am_libSDL_ttf_la_OBJECTS)
 libSDL_ttf_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \