fish-shell/build_tools/git_version_gen.sh
ridiculousfish 4f3b3f7d61 Rename GIT_DIR to FISH_BASE_DIR in git_version_gen.sh
$GIT_DIR is interpreted by git as an environment variable, pointing at the
.git directory. If git_version_gen.sh is run in an environment with an
exported GIT_DIR, it will re-export GIT_DIR to point at the fish source
directory. This will cause git operations to fail.

This could be reproduced as building fish as part of an interactive rebase
'exec' command. git_version_gen.sh would always fail!
2019-12-16 19:18:56 -08:00

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#!/usr/bin/env sh
# Originally from the git sources (GIT-VERSION-GEN)
# Presumably (C) Junio C Hamano <junkio@cox.net>
# Reused under GPL v2.0
# Modified for fish by David Adam <zanchey@ucc.gu.uwa.edu.au>
set -e
# Find the fish directory as two levels up from script directory.
FISH_BASE_DIR="$( cd "$( dirname "$( dirname "$0" )" )" && pwd )"
DEF_VER=unknown
# First see if there is a version file (included in release tarballs),
# then try git-describe, then default.
if test -f version
then
VN=$(cat version) || VN="$DEF_VER"
elif ! VN=$(git -C "$FISH_BASE_DIR" describe --always --dirty 2>/dev/null); then
VN="$DEF_VER"
fi
# If the first param is --stdout, then output to stdout and exit.
if test "$1" = '--stdout'
then
echo $VN
exit 0
fi
# Set the output directory as either the first param or cwd.
test -n "$1" && OUTPUT_DIR=$1/ || OUTPUT_DIR=
FBVF=${OUTPUT_DIR}FISH-BUILD-VERSION-FILE
if test -r $FBVF
then
VC=$(grep -v '^#' $FBVF | tr -d '"' | sed -e 's/^FISH_BUILD_VERSION=//')
else
VC="unset"
fi
# Maybe output the FBVF
# It looks like FISH_BUILD_VERSION="2.7.1-621-ga2f065e6"
test "$VN" = "$VC" || {
echo >&2 "FISH_BUILD_VERSION=$VN"
echo "FISH_BUILD_VERSION=\"$VN\"" >${FBVF}
}
# Output the fish-build-version-witness.txt
# See https://cmake.org/cmake/help/v3.4/policy/CMP0058.html
date +%s > ${OUTPUT_DIR}fish-build-version-witness.txt