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#!/bin/sh
if [ "$#" -lt 2 ]; then
echo "Usage: $0 <output_file.h> <tarball_file.h>"
exit 1
fi
VERSION_H="$1"
TARBALL_VERSION_H="$2"
TOPSRCDIR=`dirname "${TARBALL_VERSION_H}"`/..
# Check if building from git
if [ ! -d "${TOPSRCDIR}/.git" ]; then
# Not git, just ensure output file exists
if [ ! -f "${TARBALL_VERSION_H}" ]; then
echo "Warning: Not building from git and ${TARBALL_VERSION_H} doesn't exist"
echo const string GIT_COMMIT=\"Unknown\"\; > $VERSION_H
echo const string GIT_COMMIT_DATE=\"Unknown\"\; >> $VERSION_H
# else
# echo "Not updating ${VERSION_H} - building from tarball"
fi
exit 0
fi
AWK=@AWK@
FSEQUAL="="
# test for BSD awk which needs a blackslash:
FSERROR=$(${AWK} -v FS== '' 2>&1)
if [ "X$FSERROR" != "X" ] ; then
FSEQUAL="\="
fi
GIT_DIR="${TOPSRCDIR}/.git"
export GIT_DIR
LOG=`git log -1`
COMMIT=`echo "$LOG" | $AWK '/commit/{print $2; exit}'`
DATE=` echo "$LOG" | $AWK -v FS="Date: " '/Date:/{print $2; exit}'`
OLDCOMMIT=""
if [ -e $VERSION_H ]; then
OLDCOMMIT=`$AWK -v FS="$FSEQUAL" '/const string GIT_COMMIT=/{print $2}' $VERSION_H`
fi
if [ "x\"$COMMIT\";" != "x$OLDCOMMIT" ]; then
# echo "Updating commit"
echo const string GIT_COMMIT=\"$COMMIT\"\; > $VERSION_H
echo const string GIT_COMMIT_DATE=\"$DATE\"\; >> $VERSION_H
#else
# echo "Commit has not changed"
fi
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