fish-shell/build_tools/git_version_gen.sh
Mahmoud Al-Qudsi f741968d6d Drop hard dependency on bash from git_version_gen.sh again
I can't seem to find a reason why the shell interpreter needs to be bash
and not just sh here. Needed to replace `BASH_SOURCE[0]` with the legacy
`$0` supported by sh, but otherwise it seems to still work.

Many non-Linux platforms do not ship with bash out-of-the-box (and as a
shell, I don't think we need to encourage the further proliferation of
bash ;-), this lets fish build on a clean install of FreeBSD, which does
not have bash.
2018-06-01 12:48:03 -05:00

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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 git directory as two levels up from script directory.
GIT_DIR="$( cd "$( dirname $( dirname "$0" ) )" && pwd )"
FBVF=FISH-BUILD-VERSION-FILE
DEF_VER=unknown
# First see if there is a version file (included in release tarballs),
# then try git-describe, then default.
if test -f version
then
VN=$(cat version) || VN="$DEF_VER"
elif ! VN=$(git -C "$GIT_DIR" describe --always --dirty 2>/dev/null); then
VN="$DEF_VER"
fi
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 > fish-build-version-witness.txt