Add needed functions to glibc-compat for pkg

ports/glib/build.sh

 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 EXECUTABLES="
   gio/gapplication${NACL_EXEEXT}
   glib/gtester${NACL_EXEEXT}
   gobject/gobject-query${NACL_EXEEXT}
 "
 
@@ skipping 43 matching lines @@
 
   LogExecute ${SRC_DIR}/configure \
     --host=nacl \
     --prefix=${PREFIX} \
     --disable-libelf \
     --${NACL_OPTION}-mmx \
     --${NACL_OPTION}-sse \
     --${NACL_OPTION}-sse2 \
     --${NACL_OPTION}-asm
 }
+
+InstallStep() {
+  DefaultInstallStep
+  # fix pkgconfig files to explicitly include libffi
+  # for things that depend on glib
+  sed -i 's/-lglib-2.0 -lintl/-lglib-2.0 -lffi -lintl/'\
+      ${INSTALL_DIR}/naclports-dummydir/lib/pkgconfig/glib-2.0.pc
+
+  if [ "${NACL_LIBC}" = "newlib" ]; then
+      sed -i 's/-lffi -lintl/-lffi -lglibc-compat -lintl/'\
+          ${INSTALL_DIR}/naclports-dummydir/lib/pkgconfig/glib-2.0.pc
+  fi
+}