X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/c6554334704090e9c8aa81fa34140da7b5fd9ae6..d2fe8622a815e36bf66b04eb772d5ec0ba8e13af:/src/scripts/reversion?ds=inline diff --git a/src/scripts/reversion b/src/scripts/reversion index 32a867f25..c82d9c0ac 100755 --- a/src/scripts/reversion +++ b/src/scripts/reversion @@ -1,7 +1,31 @@ #!/bin/sh +# Copyright (c) The Exim Maintainers 2017 + +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. @@ -13,13 +37,18 @@ fi # If this tree is a git working directory, use that to get version information. -if [ -e ../../.git ] || [ "$1" = "release" ] +if [ -d ../../.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|-|') + if [ "$2" ] + then + description=$(git describe "$2") + else + description=$(git describe --dirty=-XX --match 'exim-4*') + fi + set $(echo "$description" | sed 's|-| |;s|_|.|;s|[-_]| _|;s|-g|-|') # Only update if we need to if [ "$2 $3" != "$EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION" ] then @@ -33,7 +62,7 @@ fi # 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 $EXIM_RELEASE_VERSION in +case "$EXIM_RELEASE_VERSION" in '') echo "*** Your copy of Exim lacks any version information." exit 1 esac @@ -42,10 +71,41 @@ 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"'"' 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 ] @@ -54,6 +114,9 @@ then echo '#define EXIM_RELEASE_VERSION "'"$EXIM_RELEASE_VERSION"'"' echo '#define EXIM_VARIANT_VERSION "'"$EXIM_VARIANT_VERSION"'"' echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION EXIM_VARIANT_VERSION' + if [ ".${exim_build_date_override:-}" != "." ]; then + echo '#define EXIM_BUILD_DATE_OVERRIDE "'"${exim_build_date_override}"'"' + fi ) >version.h fi