2 # Copyright (c) The Exim Maintainers 2017
8 # Update Exim's version header file.
10 # Compatibility gross-ness for non-POSIX systems
11 if [ -z "$EXIM_REVERSION_ADJUSTED" ]
14 EXIM_REVERSION_ADJUSTED=yes
15 export SHELL EXIM_REVERSION_ADJUSTED
17 if [ -x /usr/xpg4/bin/sh ]
19 PATH="/usr/xpg4/bin:$PATH"
20 SHELL=/usr/xpg4/bin/sh
26 exec "$SHELL" "$0" "$@"
29 # Read version information that was generated by a previous run of
30 # this script, or during the release process.
32 if [ -f ./version.sh ]
34 elif [ -f ../src/version.sh ]
35 then . ../src/version.sh
38 # If this tree is a git working directory, use that to get version information.
40 if [ -d ../../.git ] || [ "$1" = "release" ]
42 # Modify the output of git describe into separate parts for
43 # the name "exim" and the release and variant versions.
44 # Put a dot in the version number and remove a spurious g.
47 description=$(git describe "$2")
49 description=$(git describe --dirty=-XX --match 'exim-4*')
51 set $(echo "$description" | sed 's|-| |;s|_|.|;s|[-_]| _|;s|-g|-|')
52 # Only update if we need to
53 if [ "$2 $3" != "$EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION" ]
55 EXIM_RELEASE_VERSION="$2"
56 EXIM_VARIANT_VERSION="$3"
61 # If you are maintaining a patched version of Exim, you can either
62 # create your own version.sh as part of your release process, or you
63 # can modify EXIM_VARIANT_VERSION at this point in this script.
65 case "$EXIM_RELEASE_VERSION" in
66 '') echo "*** Your copy of Exim lacks any version information."
70 EXIM_COMPILE_NUMBER=$(expr "${EXIM_COMPILE_NUMBER:-0}" + 1)
72 echo "$EXIM_COMPILE_NUMBER" >cnumber.h
74 # Reproducible builds, accept a build timestamp override from environ per
75 # <https://reproducible-builds.org/specs/source-date-epoch/>.
76 # We require a fairly modern date(1) command here, which is not portable
77 # to some of the systems Exim is built on. That's okay, because the scenarios
79 # 1) Local postmaster building, not using $SOURCE_DATE_EPOCH, doesn't matter
80 # 2) Packaging folks who don't care about reproducible builds
81 # 3) Packaging folks who care but are using systems where date Just Works
82 # 3) Packaging folks who care and can put a modern date(1) in $PATH
83 # 4) Packaging folks who care and can supply us with a clean patch to support
85 # 5) Packaging folks who care but won't do any work to support their strange
86 # old systems and want us to do the work for them. We don't care either,
87 # they're SOL and have to live without reproducible builds.
89 exim_build_date_override=''
90 if [ ".${SOURCE_DATE_EPOCH:-}" != "." ]; then
91 fmt='+%d-%b-%Y %H:%M:%S'
92 # Non-reproducible, we use __DATE__ and __TIME__ in C, which respect timezone
93 # (think localtime, not gmtime); for reproduction between systems, UTC makes
94 # more sense and the examples available use UTC without explicitly mandating
95 # it. I think that we can switch behavior and use UTC for reproducible
96 # builds without it causing any problems: nothing really cares about timezone.
97 # GNU date: "date -d @TS"
98 # BSD date: "date -r TS"
99 exim_build_date_override="$(date -u -d "@${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null | date -u -r "${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null)"
102 ( echo '# automatically generated file - see ../scripts/reversion'
103 echo EXIM_RELEASE_VERSION='"'"$EXIM_RELEASE_VERSION"'"'
104 echo EXIM_VARIANT_VERSION='"'"$EXIM_VARIANT_VERSION"'"'
105 echo EXIM_COMPILE_NUMBER='"'"$EXIM_COMPILE_NUMBER"'"'
106 if [ ".${exim_build_date_override:-}" != "." ]; then
107 echo EXIM_BUILD_DATE_OVERRIDE='"'"${exim_build_date_override}"'"'
111 if [ ! -f version.h ]
113 ( echo '/* automatically generated file - see ../scripts/reversion */'
114 echo '#define EXIM_RELEASE_VERSION "'"$EXIM_RELEASE_VERSION"'"'
115 echo '#define EXIM_VARIANT_VERSION "'"$EXIM_VARIANT_VERSION"'"'
116 echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION EXIM_VARIANT_VERSION'
117 if [ ".${exim_build_date_override:-}" != "." ]; then
118 echo '#define EXIM_BUILD_DATE_OVERRIDE "'"${exim_build_date_override}"'"'
123 echo ">>> version $EXIM_RELEASE_VERSION$EXIM_VARIANT_VERSION #$EXIM_COMPILE_NUMBER"