dash/share/genbuild.sh
Wladimir J. van der Laan 2df5e3427c Fix build time when building from tarball (now really)
Don't define BUILD_DATE at all when no git version information
is available. `version.cpp` will then define it for us correctly
to the last commit date.

This has been fixed and broken many times over 0.9 history
(21cc8bd, ef1e984), please don't touch this code unless you plan
on testing all possible scenarios including gitian builds.

Fixes #3570.
2014-01-30 11:54:19 +01:00

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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: $0 <filename> <srcroot>"
exit 1
fi
DESC=""
LAST_COMMIT_DATE=""
if [ -e "$(which git)" -a -d ".git" ]; then
# clean 'dirty' status of touched files that haven't been modified
git diff >/dev/null 2>/dev/null
# get a string like "v0.6.0-66-g59887e8-dirty"
DESC="$(git describe --dirty 2>/dev/null)"
# get a string like "2012-04-10 16:27:19 +0200"
LAST_COMMIT_DATE="$(git log -n 1 --format="%ci")"
fi
if [ -n "$DESC" ]; then
NEWINFO="#define BUILD_DESC \"$DESC\""
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