gcc/libffi/merge.sh

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#!/bin/bash
# FIXME: do we need a license (or whatever else) header here?
# This script merges libffi sources from upstream.
# Default to the tip of master branch.
commit=${1-master}
fatal() {
echo "$1"
exit 1;
}
get_upstream() {
rm -rf upstream
git clone https://github.com/libffi/libffi.git upstream
pushd upstream
git checkout $commit || fatal "Failed to checkout $commit"
popd
}
get_current_rev() {
cd upstream
git rev-parse HEAD
}
pwd | grep 'libffi$' || \
fatal "Run this script from the libffi directory"
get_upstream
CUR_REV=$(get_current_rev)
echo Current upstream revision: $CUR_REV
# Remove the unused files.
pushd upstream
rm -rf ChangeLog.old .appveyor* .ci .github .gitignore .travis* \
config.guess config.sub libtool-ldflags m4 make_sunver.pl \
msvc_build
rm -rf .git autogen.sh
cp -a . ..
popd
rm -rf upstream
# Update the MERGE file.
cat << EOF > MERGE
$CUR_REV
The first line of this file holds the git revision number of the
last merge done from the master library sources.
EOF