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