diff options
Diffstat (limited to 'scripts/reversion')
| -rwxr-xr-x | scripts/reversion | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/scripts/reversion b/scripts/reversion new file mode 100755 index 0000000..b932224 --- /dev/null +++ b/scripts/reversion @@ -0,0 +1,134 @@ +#!/bin/sh +# Copyright (c) The Exim Maintainers 1995 - 2021 + +set -e +LC_ALL=C +export LC_ALL + +# Update Exim's version header file. + +# Compatibility gross-ness for non-POSIX systems +if [ -z "$EXIM_REVERSION_ADJUSTED" ] +then + SHELL=/bin/sh + EXIM_REVERSION_ADJUSTED=yes + export SHELL EXIM_REVERSION_ADJUSTED + # Solaris: + if [ -x /usr/xpg4/bin/sh ] + then + PATH="/usr/xpg4/bin:$PATH" + SHELL=/usr/xpg4/bin/sh + export PATH SHELL + fi + # Irix: + _XPG=1 ; export _XPG + # + exec "$SHELL" "$0" "$@" +fi + +# Read version information that was generated by a previous run of +# this script, or during the release process. + +# Override, used for automated testing w/o access to the +# .git directory (w.g. inside a git worktree) +if [ -n "$EXIM_RELEASE_VERSION" ]; then + : +elif [ -f ./version.sh ]; then + . ./version.sh +elif [ -f ../src/version.sh ]; then + . ../src/version.sh +elif [ -d ../../.git ] || [ -f ../../.git ] || [ "$1" = release ]; then + # Modify the output of git describe into separate parts for + # the name "exim" and the release and variant versions. + # Put a dot in the version number and remove a spurious g. + if [ "$2" ] + then + description=$(git describe "$2") + else + description=$(git describe --dirty=-XX --match 'exim-4*') + fi + set $(echo "$description" | sed 's/-/ /; s/-g/-/') + # Only update if we need to + if [ "$2 $3" != "$EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION" ] + then + EXIM_RELEASE_VERSION="$2" + EXIM_VARIANT_VERSION="$3" + rm -f version.h + fi +fi + +if [ -z "$EXIM_RELEASE_VERSION" ]; then + echo "Cannot determine the release number" >&2 + echo "You may want to override it with EXIM_RELEASE_VERSION" >&2 + exit 1 +fi + +# If you are maintaining a patched version of Exim, you can either +# create your own version.sh as part of your release process, or you +# can modify EXIM_VARIANT_VERSION at this point in this script. + +if test -z "$EXIM_RELEASE_VERSION"; then + echo "$0: Your copy of Exim lacks any version information." >&2 + exit 1 +fi + +EXIM_COMPILE_NUMBER=$(expr "${EXIM_COMPILE_NUMBER:-0}" + 1) + +echo "$EXIM_COMPILE_NUMBER" >cnumber.h + +# Reproducible builds, accept a build timestamp override from environ per +# <https://reproducible-builds.org/specs/source-date-epoch/>. +# We require a fairly modern date(1) command here, which is not portable +# to some of the systems Exim is built on. That's okay, because the scenarios +# are: +# 1) Local postmaster building, not using $SOURCE_DATE_EPOCH, doesn't matter +# 2) Packaging folks who don't care about reproducible builds +# 3) Packaging folks who care but are using systems where date Just Works +# 3) Packaging folks who care and can put a modern date(1) in $PATH +# 4) Packaging folks who care and can supply us with a clean patch to support +# their requirements +# 5) Packaging folks who care but won't do any work to support their strange +# old systems and want us to do the work for them. We don't care either, +# they're SOL and have to live without reproducible builds. +# +exim_build_date_override='' +if [ ".${SOURCE_DATE_EPOCH:-}" != "." ]; then + fmt='+%d-%b-%Y %H:%M:%S' + # Non-reproducible, we use __DATE__ and __TIME__ in C, which respect timezone + # (think localtime, not gmtime); for reproduction between systems, UTC makes + # more sense and the examples available use UTC without explicitly mandating + # it. I think that we can switch behavior and use UTC for reproducible + # builds without it causing any problems: nothing really cares about timezone. + # GNU date: "date -d @TS" + # BSD date: "date -r TS" + exim_build_date_override="$(date -u -d "@${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null || date -u -r "${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null)" +fi + +( echo '# automatically generated file - see ../scripts/reversion' + echo EXIM_RELEASE_VERSION='"'"$EXIM_RELEASE_VERSION"'"' + test -n "$EXIM_VARIANT_VERSION" && \ + echo EXIM_VARIANT_VERSION='"'"$EXIM_VARIANT_VERSION"'"' + echo EXIM_COMPILE_NUMBER='"'"$EXIM_COMPILE_NUMBER"'"' + if [ ".${exim_build_date_override:-}" != "." ]; then + echo EXIM_BUILD_DATE_OVERRIDE='"'"${exim_build_date_override}"'"' + fi +) >version.sh + +if [ ! -f version.h ] +then +( echo '/* automatically generated file - see ../scripts/reversion */' + echo '#define EXIM_RELEASE_VERSION "'"$EXIM_RELEASE_VERSION"'"' + test -n "$EXIM_VARIANT_VERSION" && \ + echo '#define EXIM_VARIANT_VERSION "'"$EXIM_VARIANT_VERSION"'"' + echo '#ifdef EXIM_VARIANT_VERSION' + echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION "-" EXIM_VARIANT_VERSION' + echo '#else' + echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION' + echo '#endif' + if [ ".${exim_build_date_override:-}" != "." ]; then + echo '#define EXIM_BUILD_DATE_OVERRIDE "'"${exim_build_date_override}"'"' + fi +) >version.h +fi + +#test -t 1 && echo ">>> version $EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION #$EXIM_COMPILE_NUMBER" |