diff -r 000000000000 -r 6474c204b198 gfx/harfbuzz/src/check-symbols.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/harfbuzz/src/check-symbols.sh	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+LC_ALL=C
+export LC_ALL
+
+test -z "$srcdir" && srcdir=.
+stat=0
+
+
+if which nm 2>/dev/null >/dev/null; then
+	:
+else
+	echo "check-symbols.sh: 'nm' not found; skipping test"
+	exit 77
+fi
+
+echo "Checking that we are not exposing internal symbols"
+tested=false
+for so in `ls .libs/lib*.so .libs/lib*.dylib 2>/dev/null` ; do
+	
+	EXPORTED_SYMBOLS="`nm "$so" | grep ' [BCDGINRSTVW] ' | grep -v ' _fini\>\| _init\>\| _fdata\>\| _ftext\>\| __bss_start\>\| __bss_start__\>\| __bss_end__\>\| _edata\>\| _end\>\| _bss_end__\>\| __end__\>' | cut -d' ' -f3`"
+	prefix=`basename "$so" | sed 's/libharfbuzz/hb/; s/-/_/g; s/[.].*//'`
+
+	echo "Processing $so"
+	if echo "$EXPORTED_SYMBOLS" | grep -v "^${prefix}_"; then
+		echo "Ouch, internal symbols exposed"
+		stat=1
+	fi
+
+	tested=true
+done
+if ! $tested; then
+	echo "check-symbols.sh: no shared library found; skipping test"
+	exit 77
+fi
+
+exit $stat