Only the convenience library is used in libjava, and the bundled version
is usually a few releases behind the standalone version.

--- origsrc/gcc-4.7.2/Makefile.in	2012-08-06 09:34:27.000000000 -0500
+++ src/gcc-4.7.2/Makefile.in	2013-03-10 21:27:05.825568600 -0500
@@ -1573,7 +1573,6 @@ install-info-target: maybe-install-info-
 install-info-target: maybe-install-info-target-libtermcap
 install-info-target: maybe-install-info-target-winsup
 install-info-target: maybe-install-info-target-libgloss
-install-info-target: maybe-install-info-target-libffi
 install-info-target: maybe-install-info-target-libjava
 install-info-target: maybe-install-info-target-zlib
 install-info-target: maybe-install-info-target-boehm-gc
@@ -1651,7 +1650,6 @@ install-pdf-target: maybe-install-pdf-ta
 install-pdf-target: maybe-install-pdf-target-libtermcap
 install-pdf-target: maybe-install-pdf-target-winsup
 install-pdf-target: maybe-install-pdf-target-libgloss
-install-pdf-target: maybe-install-pdf-target-libffi
 install-pdf-target: maybe-install-pdf-target-libjava
 install-pdf-target: maybe-install-pdf-target-zlib
 install-pdf-target: maybe-install-pdf-target-boehm-gc
@@ -1729,7 +1727,6 @@ install-html-target: maybe-install-html-
 install-html-target: maybe-install-html-target-libtermcap
 install-html-target: maybe-install-html-target-winsup
 install-html-target: maybe-install-html-target-libgloss
-install-html-target: maybe-install-html-target-libffi
 install-html-target: maybe-install-html-target-libjava
 install-html-target: maybe-install-html-target-zlib
 install-html-target: maybe-install-html-target-boehm-gc
@@ -1807,7 +1804,6 @@ installcheck-target: maybe-installcheck-
 installcheck-target: maybe-installcheck-target-libtermcap
 installcheck-target: maybe-installcheck-target-winsup
 installcheck-target: maybe-installcheck-target-libgloss
-installcheck-target: maybe-installcheck-target-libffi
 installcheck-target: maybe-installcheck-target-libjava
 installcheck-target: maybe-installcheck-target-zlib
 installcheck-target: maybe-installcheck-target-boehm-gc
@@ -2402,7 +2398,6 @@ install-target:  \
     maybe-install-target-libtermcap \
     maybe-install-target-winsup \
     maybe-install-target-libgloss \
-    maybe-install-target-libffi \
     maybe-install-target-libjava \
     maybe-install-target-zlib \
     maybe-install-target-boehm-gc \
@@ -2500,7 +2495,6 @@ install-strip-target:  \
     maybe-install-strip-target-libtermcap \
     maybe-install-strip-target-winsup \
     maybe-install-strip-target-libgloss \
-    maybe-install-strip-target-libffi \
     maybe-install-strip-target-libjava \
     maybe-install-strip-target-zlib \
     maybe-install-strip-target-boehm-gc \