harfbuzz/src/check-symbols.sh

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#!/bin/sh
LC_ALL=C
export LC_ALL
test -z "$srcdir" && srcdir=.
test -z "$libs" && libs=.libs
stat=0
IGNORED_SYMBOLS='_fini\|_init\|_fdata\|_ftext\|_fbss\|__bss_start\|__bss_start__\|__bss_end__\|_edata\|_end\|_bss_end__\|__end__\|__gcov_flush\|llvm_.*'
if which nm 2>/dev/null >/dev/null; then
:
else
echo "check-symbols.sh: 'nm' not found; skipping test"
exit 77
fi
tested=false
for soname in harfbuzz harfbuzz-subset harfbuzz-icu harfbuzz-gobject; do
for suffix in so dylib; do
so=$libs/lib$soname.$suffix
if ! test -f "$so"; then continue; fi
# On macOS, C symbols are prefixed with _
symprefix=
if test $suffix = dylib; then symprefix=_; fi
EXPORTED_SYMBOLS="`nm "$so" | grep ' [BCDGINRST] .' | grep -v " $symprefix\\($IGNORED_SYMBOLS\\>\\)" | cut -d' ' -f3 | c++filt`"
prefix=$symprefix`basename "$so" | sed 's/libharfbuzz/hb/; s/-/_/g; s/[.].*//'`
echo "Checking that $so does not expose internal symbols"
if echo "$EXPORTED_SYMBOLS" | grep -v "^${prefix}\(_\|$\)"; then
echo "Ouch, internal symbols exposed"
stat=1
fi
def=$soname.def
if ! test -f "$def"; then
echo "'$def' not found; skipping"
else
echo "Checking that $so has the same symbol list as $def"
{
echo EXPORTS
echo "$EXPORTED_SYMBOLS" | sed -e "s/^${symprefix}hb/hb/g"
# cheat: copy the last line from the def file!
tail -n1 "$def"
} | c++filt | diff "$def" - >&2 || stat=1
fi
tested=true
done
done
if ! $tested; then
echo "check-symbols.sh: no shared libraries found; skipping test"
exit 77
fi
exit $stat