From: Julian Ospald <hasufell@gentoo.org>
Date: Mon Sep  2 20:29:16 UTC 2013
Subject: fix linking with newer glibc

https://bugzilla.libsdl.org/show_bug.cgi?id=1401

--- SDL2_ttf-2.0.12/Makefile.am
+++ SDL2_ttf-2.0.12/Makefile.am
@@ -35,6 +35,7 @@
 	-release $(LT_RELEASE)	\
 	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 endif
+libSDL2_ttf_la_LIBADD = @MATHLIB@
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = SDL2_ttf.pc