This patch was downloaded from https://aur.archlinux.org/cgit/aur.git/tree/?h=java8-openjdk
More info can be found at http://www.infinality.net/forum/viewtopic.php?f=2&t=275
diff -ur a/jdk/make/lib/Awt2dLibraries.gmk b/jdk/make/lib/Awt2dLibraries.gmk
--- a/jdk/make/lib/Awt2dLibraries.gmk	2015-07-13 20:50:59.000000000 +0300
+++ b/jdk/make/lib/Awt2dLibraries.gmk	2015-08-24 12:12:22.930330643 +0300
@@ -824,7 +824,7 @@
     LDFLAGS := $(subst -Xlinker -z -Xlinker defs,,$(LDFLAGS_JDKLIB)) $(LDFLAGS_CXX_JDK) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LDFLAGS_SUFFIX := $(BUILD_LIBFONTMANAGER_FONTLIB), \
-    LDFLAGS_SUFFIX_linux := -lawt $(LIBM) $(LIBCXX) -ljava -ljvm -lc, \
+    LDFLAGS_SUFFIX_linux := -lfontconfig -lawt $(LIBM) $(LIBCXX) -ljava -ljvm -lc, \
     LDFLAGS_SUFFIX_solaris := -lawt -lawt_headless -lc $(LIBM) $(LIBCXX) -ljava -ljvm, \
     LDFLAGS_SUFFIX_aix := -lawt -lawt_headless $(LIBM) $(LIBCXX) -ljava -ljvm,\
     LDFLAGS_SUFFIX_macosx := -lawt $(LIBM) $(LIBCXX) -undefined dynamic_lookup \