X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/28c6059071a8c9db89aa34c70e9a4b0dc4000f26..13912bf2bc166b324a73b4b5089defa5bb698ae6:/src/scripts/reversion?ds=sidebyside diff --git a/src/scripts/reversion b/src/scripts/reversion index ad83fe564..3657cfcba 100755 --- a/src/scripts/reversion +++ b/src/scripts/reversion @@ -1,4 +1,9 @@ #!/bin/sh +# Copyright (c) The Exim Maintainers 1995 - 2018 + +set -e +LC_ALL=C +export LC_ALL # Update Exim's version header file. @@ -24,57 +29,100 @@ fi # Read version information that was generated by a previous run of # this script, or during the release process. -if [ -f ./version.sh ] -then . ./version.sh -elif [ -f ../src/version.sh ] -then . ../src/version.sh -fi - -# If this tree is a git working directory, use that to get version information. - -if [ -e ../../.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. - set $(git describe --dirty=-XX --match 'exim-4*' | - sed 's|-| |;s|_|.|;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 +if [ -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 +else + echo "Cannot determine the release number" >&2 + exit 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. -case $EXIM_RELEASE_VERSION in -'') echo "*** Your copy of Exim lacks any version information." - exit 1 -esac +if test -z "$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 +# . +# 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 '#define EXIM_VERSION_STR EXIM_RELEASE_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 -echo ">>> version $EXIM_RELEASE_VERSION$EXIM_VARIANT_VERSION #$EXIM_COMPILE_NUMBER" +echo ">>> version $EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION #$EXIM_COMPILE_NUMBER" echo