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|
#!/bin/sh
set -ex
TESTDIR="$(cd $(dirname "$0"); pwd)"
usage() {
cat <<_EOF_
Usage: $0 [--zlib-compat][--refresh][--refresh-if]
Build shared library with -ggdb, then compare its ABI to the stable
ABI, and abort if differences found.
Options:
--zlib-compat - check the ABI of the zlib-compatible flavor of zlib-ng.
--refresh - build the reference library and extract its ABI rather than using a stored ABI file.
--refresh-if - refresh only if ABI file not present.
Obeys CHOST, CONFIGURE_ARGS, CFLAGS, and LDFLAGS.
Requires libabigail (on Ubuntu, install package abigail-tools).
_EOF_
}
# Print the multiarch tuple for the current (non-cross) machine,
# or the empty string if unavailable.
detect_chost() {
dpkg-architecture -qDEB_HOST_MULTIARCH ||
$CC -print-multiarch ||
$CC -print-search-dirs | sed 's/:/\n/g' | grep -E '^/lib/[^/]+$' | sed 's%.*/%%' ||
true
}
if ! test -f "configure"
then
echo "Please run from top of source tree"
exit 1
fi
suffix="-ng"
CONFIGURE_ARGS_NG="$CONFIGURE_ARGS"
refresh=false
refresh_if=false
for arg
do
case "$arg" in
--zlib-compat)
suffix=""
CONFIGURE_ARGS_NG="$CONFIGURE_ARGS_NG --zlib-compat"
;;
--refresh)
refresh=true
;;
--refresh-if)
refresh_if=true
;;
--help)
usage
exit 0
;;
*)
echo "Unknown arg '$arg'"
usage
exit 1
;;
esac
done
# Choose reference repo and commit
if test "$suffix" = ""
then
# Reference is zlib 1.2.11
ABI_GIT_REPO=https://github.com/madler/zlib.git
ABI_GIT_COMMIT=v1.2.11
else
# Reference is zlib-ng 2.0.0
ABI_GIT_REPO=https://github.com/zlib-ng/zlib-ng.git
ABI_GIT_COMMIT=2.0.0
fi
# FIXME: even when using a tag, check the hash.
# Test compat build for ABI compatibility with zlib
if test "$CHOST" = ""
then
# Note: don't export CHOST here, as we don't want configure seeing it
# when it's just the name for the build machine.
# Leave it as a plain shell variable, not an environment variable.
CHOST=$(detect_chost)
# Support -m32 for non-cross builds.
case "$CFLAGS" in
*-m32*) M32="-m32";;
*) M32="";;
esac
fi
# Canonicalize CHOST to work around bug in original zlib's configure
# (Don't export it if it wasn't already exported, else may cause
# default compiler detection failure and shared library link error
# when building both zlib and zlib-ng.
# See https://github.com/zlib-ng/zlib-ng/issues/1219)
CHOST=$(sh $TESTDIR/../tools/config.sub $CHOST)
if test "$CHOST" = ""
then
echo "abicheck: SKIP, as we don't know CHOST"
exit 0
fi
ABIFILE="test/abi/zlib$suffix-$ABI_GIT_COMMIT-$CHOST$M32.abi"
if ! $refresh && $refresh_if && ! test -f "$ABIFILE"
then
refresh=true
fi
abidw --version
if $refresh
then
# Check out reference source
rm -rf btmp1
mkdir -p btmp1/src.d
cd btmp1/src.d
git init
git remote add origin $ABI_GIT_REPO
git fetch origin $ABI_GIT_COMMIT
git reset --hard FETCH_HEAD
cd ..
# Build unstripped, uninstalled, very debug shared library
CFLAGS="$CFLAGS -ggdb" src.d/configure $CONFIGURE_ARGS
make -j2
cd ..
# Find shared library, extract its abi
dylib1=$(find btmp1 -type f -name '*.dylib*' -print -o -type f -name '*.so.*' -print)
abidw $dylib1 > "$ABIFILE"
# Maintainers may wish to check $ABIFILE into git when a new
# target is added, or when a major release happens that is
# intended to change the ABI. Alternately, this script could
# just always rebuild the reference source, and dispense with
# caching abi files in git (but that would slow builds down).
fi
if ! test -f "$ABIFILE"
then
echo "abicheck: SKIP: $ABIFILE not found; rerun with --refresh or --refresh-if"
exit 1
fi
# Build unstripped, uninstalled, very debug shared library
rm -rf btmp2
mkdir btmp2
cd btmp2
CFLAGS="$CFLAGS -ggdb" ../configure $CONFIGURE_ARGS_NG
make -j2
cd ..
# Find shared library, extract its abi
dylib2=$(find btmp2 -type f -name '*.dylib*' -print -o -type f -name '*.so.*' -print)
abidw $dylib2 > btmp2/zlib${suffix}-built.abi
# Compare it to the reference
# FIXME: use --no-added-syms for now, but we probably want to be more strict.
if abidiff --no-added-syms --suppressions test/abi/ignore "$ABIFILE" btmp2/zlib${suffix}-built.abi
then
echo "abicheck: PASS"
else
echo "abicheck: FAIL"
exit 1
fi
|
