1#!/bin/sh
2
3LC_ALL=C
4export LC_ALL
5
6test -z "$srcdir" && srcdir=.
7test -z "$libs" && libs=.libs
8stat=0
9
10IGNORED_SYMBOLS='_fini\|_init\|_fdata\|_ftext\|_fbss\|__bss_start\|__bss_start__\|__bss_end__\|_edata\|_end\|_bss_end__\|__end__\|__gcov_flush\|llvm_.*'
11
12if which nm 2>/dev/null >/dev/null; then
13	:
14else
15	echo "check-symbols.sh: 'nm' not found; skipping test"
16	exit 77
17fi
18
19tested=false
20for soname in harfbuzz harfbuzz-subset harfbuzz-icu harfbuzz-gobject; do
21	for suffix in so dylib; do
22		so=$libs/lib$soname.$suffix
23		if ! test -f "$so"; then continue; fi
24
25		# On macOS, C symbols are prefixed with _
26		symprefix=
27		if test $suffix = dylib; then symprefix=_; fi
28
29		EXPORTED_SYMBOLS="`nm "$so" | grep ' [BCDGINRST] .' | grep -v " $symprefix\\($IGNORED_SYMBOLS\\>\\)" | cut -d' ' -f3 | c++filt`"
30
31		prefix=$symprefix`basename "$so" | sed 's/libharfbuzz/hb/; s/-/_/g; s/[.].*//'`
32
33		echo "Checking that $so does not expose internal symbols"
34		if echo "$EXPORTED_SYMBOLS" | grep -v "^${prefix}\(_\|$\)"; then
35			echo "Ouch, internal symbols exposed"
36			stat=1
37		fi
38
39		def=$soname.def
40		if ! test -f "$def"; then
41			echo "'$def' not found; skipping"
42		else
43			echo "Checking that $so has the same symbol list as $def"
44			{
45				echo EXPORTS
46				echo "$EXPORTED_SYMBOLS" | sed -e "s/^${symprefix}hb/hb/g"
47				# cheat: copy the last line from the def file!
48				tail -n1 "$def"
49			} | c++filt | diff "$def" - >&2 || stat=1
50		fi
51
52		tested=true
53	done
54done
55if ! $tested; then
56	echo "check-symbols.sh: no shared libraries found; skipping test"
57	exit 77
58fi
59
60exit $stat
61