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pvxs/abi-diff.sh
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2025-04-03 13:47:22 +01:00

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#!/bin/sh
set -e -x
# need abi-dumper vtable-dumper abi-compliance-checker ctags-universal
# circa >= Debian 11
die() {
echo "$1" >&1
exit 1
}
OLD="$1"
NEW="${2:-HEAD}"
# default to tag before $NEW
[ "$OLD" ] || OLD="$(git describe --abbrev=0 "$NEW")"
[ "$OLD" -a "$NEW" ] || die "usage: $0 <oldrev> <newrev>"
echo "Diff $OLD -> $NEW"
TDIR=`mktemp -d`
trap 'rm -rf "$TDIR"' EXIT INT QUIT TERM
# abi-dumper is very particular about ctags variant
install -d "$TDIR/bin"
ln -s "$(which ctags-universal)" "$TDIR/bin/ctags"
PATH="$TDIR/bin:$PATH"
which ctags
ctags --version
# $1 rev
# $2 dir
setupsrc() {
mkdir "$2"
[ -f "compat_reports/libpvxs/$1.dump" -a -f "compat_reports/libpvxsIoc/$1.dump" ] && return 0
git archive "$1" | tar -C "$2" -xv
# would be nice to use clone, and get sub-modules.
# but no such luck...
#git clone --branch "$1" --depth 1 --recurse-submodules --shallow-submodules --reference file://$PWD file://$PWD "$2"
[ -f configure/RELEASE.local ] && cp configure/RELEASE.local "$2/configure/"
[ -f configure/CONFIG_SITE.local ] && cp configure/CONFIG_SITE.local "$2/configure/"
sed -i -e "s|\$(TOP)|$(pwd)|g" -e 's|-Werror||g' "$2/configure"/*.local
# assume host libevent_core is available
#make -C "$2/bundle" libevent -j8
make -C "$2" CROSS_COMPILER_TARGET_ARCHS= OPT_CFLAGS='-g -Og' OPT_CXXFLAGS='-g -Og' ioc -j8
install -C -d compat_reports/libpvxs
install -C -d compat_reports/libpvxsIoc
nm -g "$2"/lib/linux-*/libpvxs.so.* |sed -e 's|^[0-9a-f]*\s*||' > "compat_reports/libpvxs/$1.nm"
nm -g "$2"/lib/linux-*/libpvxsIoc.so.* |sed -e 's|^[0-9a-f]*\s*||' > "compat_reports/libpvxsIoc/$1.nm"
abi-dumper "$2"/lib/linux-*/libpvxs.so.* -o "compat_reports/libpvxs/$1.dump" -public-headers "$2/include" -lver "$1"
abi-dumper "$2"/lib/linux-*/libpvxsIoc.so.* -o "compat_reports/libpvxsIoc/$1.dump" -public-headers "$2/include" -lver "$1"
}
setupsrc "$OLD" "$TDIR/old"
setupsrc "$NEW" "$TDIR/new"
# I don't totally trust abicc, so let's have a second opinion...
diff -u "compat_reports/libpvxs/$OLD.nm" "compat_reports/libpvxs/$NEW.nm" || true
diff -u "compat_reports/libpvxsIoc/$OLD.nm" "compat_reports/libpvxsIoc/$NEW.nm" || true
RET=0
if ! abi-compliance-checker -l libpvxs \
-report-path "compat_reports/compat_report-${OLD}_to_${NEW}.html" \
-old "compat_reports/libpvxs/$OLD.dump" \
-new "compat_reports/libpvxs/$NEW.dump"
then
RET=1
fi
abi-compliance-checker -l libpvxsIoc \
-report-path "compat_reports/compat_report-${OLD}_to_${NEW}-ioc.html" \
-old "compat_reports/libpvxsIoc/$OLD.dump" \
-new "compat_reports/libpvxsIoc/$NEW.dump"
exit $RET