2 # Copyright (c) The Exim Maintainers 1995 - 2021
3 # SPDX-License-Identifier: GPL-2.0-or-later
9 # Update Exim's version header file.
11 # Compatibility gross-ness for non-POSIX systems
12 if [ -z "$EXIM_REVERSION_ADJUSTED" ]
15 EXIM_REVERSION_ADJUSTED=yes
16 export SHELL EXIM_REVERSION_ADJUSTED
18 if [ -x /usr/xpg4/bin/sh ]
20 PATH="/usr/xpg4/bin:$PATH"
21 SHELL=/usr/xpg4/bin/sh
27 exec "$SHELL" "$0" "$@"
30 # Read version information that was generated by a previous run of
31 # this script, or during the release process.
33 # Override, used for automated testing w/o access to the
34 # .git directory (w.g. inside a git worktree)
35 if [ -n "$EXIM_RELEASE_VERSION" ]; then
37 elif [ -f ./version.sh ]; then
39 elif [ -f ../src/version.sh ]; then
41 elif [ -d ../../.git ] || [ -f ../../.git ] || [ "$1" = release ]; then
42 # Modify the output of git describe into separate parts for
43 # the name "exim" and the release and variant versions.
44 # Put a dot in the version number and remove a spurious g.
47 description=$(git describe "$2")
49 description=$(git describe --dirty=-XX --match 'exim-4*')
51 set $(echo "$description" | sed 's/-/ /; s/-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="$3"
61 if [ -z "$EXIM_RELEASE_VERSION" ]; then
62 echo "Cannot determine the release number" >&2
63 echo "You may want to override it with EXIM_RELEASE_VERSION" >&2
67 # If you are maintaining a patched version of Exim, you can either
68 # create your own version.sh as part of your release process, or you
69 # can modify EXIM_VARIANT_VERSION at this point in this script.
71 if test -z "$EXIM_RELEASE_VERSION"; then
72 echo "$0: Your copy of Exim lacks any version information." >&2
76 EXIM_COMPILE_NUMBER=$(expr "${EXIM_COMPILE_NUMBER:-0}" + 1)
78 echo "$EXIM_COMPILE_NUMBER" >cnumber.h
80 # Reproducible builds, accept a build timestamp override from environ per
81 # <https://reproducible-builds.org/specs/source-date-epoch/>.
82 # We require a fairly modern date(1) command here, which is not portable
83 # to some of the systems Exim is built on. That's okay, because the scenarios
85 # 1) Local postmaster building, not using $SOURCE_DATE_EPOCH, doesn't matter
86 # 2) Packaging folks who don't care about reproducible builds
87 # 3) Packaging folks who care but are using systems where date Just Works
88 # 3) Packaging folks who care and can put a modern date(1) in $PATH
89 # 4) Packaging folks who care and can supply us with a clean patch to support
91 # 5) Packaging folks who care but won't do any work to support their strange
92 # old systems and want us to do the work for them. We don't care either,
93 # they're SOL and have to live without reproducible builds.
95 exim_build_date_override=''
96 if [ ".${SOURCE_DATE_EPOCH:-}" != "." ]; then
97 fmt='+%d-%b-%Y %H:%M:%S'
98 # Non-reproducible, we use __DATE__ and __TIME__ in C, which respect timezone
99 # (think localtime, not gmtime); for reproduction between systems, UTC makes
100 # more sense and the examples available use UTC without explicitly mandating
101 # it. I think that we can switch behavior and use UTC for reproducible
102 # builds without it causing any problems: nothing really cares about timezone.
103 # GNU date: "date -d @TS"
104 # BSD date: "date -r TS"
105 exim_build_date_override="$(date -u -d "@${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null || date -u -r "${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null)"
108 ( echo '# automatically generated file - see ../scripts/reversion'
109 echo EXIM_RELEASE_VERSION='"'"$EXIM_RELEASE_VERSION"'"'
110 test -n "$EXIM_VARIANT_VERSION" && \
111 echo EXIM_VARIANT_VERSION='"'"$EXIM_VARIANT_VERSION"'"'
112 echo EXIM_COMPILE_NUMBER='"'"$EXIM_COMPILE_NUMBER"'"'
113 if [ ".${exim_build_date_override:-}" != "." ]; then
114 echo EXIM_BUILD_DATE_OVERRIDE='"'"${exim_build_date_override}"'"'
118 if [ ! -f version.h ]
120 ( echo '/* automatically generated file - see ../scripts/reversion */'
121 echo '#define EXIM_RELEASE_VERSION "'"$EXIM_RELEASE_VERSION"'"'
122 test -n "$EXIM_VARIANT_VERSION" && \
123 echo '#define EXIM_VARIANT_VERSION "'"$EXIM_VARIANT_VERSION"'"'
124 echo '#ifdef EXIM_VARIANT_VERSION'
125 echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION "-" EXIM_VARIANT_VERSION'
127 echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION'
129 if [ ".${exim_build_date_override:-}" != "." ]; then
130 echo '#define EXIM_BUILD_DATE_OVERRIDE "'"${exim_build_date_override}"'"'
135 #test -t 1 && echo ">>> version $EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION #$EXIM_COMPILE_NUMBER"