dash/share/genbuild.sh
Warren Togami 3d20cd5f61 VERSION obtained from source instead of the previous git tag.
Drawback: The version string is no longer a valid git identifier.
          For this reason the 'g' short hash prefix has been removed.

Exception: When building directly from a tag this behaves exactly like the previous behavior.
           This allows formatting release versions with precision     i.e. v0.9.2
           This also allows arbitrary topicbranch names               i.e. v0.9.1-glibc-compat
2014-04-15 21:48:44 -10:00

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#!/bin/sh
if [ $# -gt 1 ]; then
cd "$2"
fi
if [ $# -gt 0 ]; then
FILE="$1"
shift
if [ -f "$FILE" ]; then
INFO="$(head -n 1 "$FILE")"
fi
else
echo "Usage: $0 <filename> <srcroot>"
exit 1
fi
DESC=""
SUFFIX=""
LAST_COMMIT_DATE=""
if [ -e "$(which git)" -a -d ".git" ]; then
# clean 'dirty' status of touched files that haven't been modified
git diff >/dev/null 2>/dev/null
# if latest commit is tagged and not dirty, then override using the tag name
RAWDESC=$(git describe --abbrev=0 2>/dev/null)
if [ "$(git rev-parse HEAD)" = "$(git rev-list -1 $RAWDESC)" ]; then
git diff-index --quiet HEAD -- && DESC=$RAWDESC
fi
# otherwise generate suffix from git, i.e. string like "59887e8-dirty"
SUFFIX=$(git rev-parse --short HEAD)
git diff-index --quiet HEAD -- || SUFFIX="$SUFFIX-dirty"
# get a string like "2012-04-10 16:27:19 +0200"
LAST_COMMIT_DATE="$(git log -n 1 --format="%ci")"
fi
if [ -n "$DESC" ]; then
NEWINFO="#define BUILD_DESC \"$DESC\""
elif [ -n "$SUFFIX" ]; then
NEWINFO="#define BUILD_SUFFIX $SUFFIX"
else
NEWINFO="// No build information available"
fi
# only update build.h if necessary
if [ "$INFO" != "$NEWINFO" ]; then
echo "$NEWINFO" >"$FILE"
if [ -n "$LAST_COMMIT_DATE" ]; then
echo "#define BUILD_DATE \"$LAST_COMMIT_DATE\"" >> "$FILE"
fi
fi