2 # Copyright (c) The Exim Maintainers 1995 - 2021
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 # Override, used for automated testing w/o access to the
33 # .git directory (w.g. inside a git worktree)
34 if [ -n "$EXIM_RELEASE_VERSION" ]; then
36 elif [ -f ./version.sh ]; then
38 elif [ -f ../src/version.sh ]; then
40 elif [ -d ../../.git ] || [ -f ../../.git ] || [ "$1" = release ]; then
41 # Modify the output of git describe into separate parts for
42 # the name "exim" and the release and variant versions.
43 # Put a dot in the version number and remove a spurious g.
46 description=$(git describe "$2")
48 description=$(git describe --dirty=-XX --match 'exim-4*')
50 set $(echo "$description" | sed 's/-/ /; s/-g/-/')
51 # Only update if we need to
52 if [ "$2 $3" != "$EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION" ]
54 EXIM_RELEASE_VERSION="$2"
55 EXIM_VARIANT_VERSION="$3"
60 if [ -z "$EXIM_RELEASE_VERSION" ]; then
61 echo "Cannot determine the release number" >&2
62 echo "You may want to override it with EXIM_RELEASE_VERSION" >&2
66 # If you are maintaining a patched version of Exim, you can either
67 # create your own version.sh as part of your release process, or you
68 # can modify EXIM_VARIANT_VERSION at this point in this script.
70 if test -z "$EXIM_RELEASE_VERSION"; then
71 echo "$0: Your copy of Exim lacks any version information." >&2
75 EXIM_COMPILE_NUMBER=$(expr "${EXIM_COMPILE_NUMBER:-0}" + 1)
77 echo "$EXIM_COMPILE_NUMBER" >cnumber.h
79 # Reproducible builds, accept a build timestamp override from environ per
80 # <https://reproducible-builds.org/specs/source-date-epoch/>.
81 # We require a fairly modern date(1) command here, which is not portable
82 # to some of the systems Exim is built on. That's okay, because the scenarios
84 # 1) Local postmaster building, not using $SOURCE_DATE_EPOCH, doesn't matter
85 # 2) Packaging folks who don't care about reproducible builds
86 # 3) Packaging folks who care but are using systems where date Just Works
87 # 3) Packaging folks who care and can put a modern date(1) in $PATH
88 # 4) Packaging folks who care and can supply us with a clean patch to support
90 # 5) Packaging folks who care but won't do any work to support their strange
91 # old systems and want us to do the work for them. We don't care either,
92 # they're SOL and have to live without reproducible builds.
94 exim_build_date_override=''
95 if [ ".${SOURCE_DATE_EPOCH:-}" != "." ]; then
96 fmt='+%d-%b-%Y %H:%M:%S'
97 # Non-reproducible, we use __DATE__ and __TIME__ in C, which respect timezone
98 # (think localtime, not gmtime); for reproduction between systems, UTC makes
99 # more sense and the examples available use UTC without explicitly mandating
100 # it. I think that we can switch behavior and use UTC for reproducible
101 # builds without it causing any problems: nothing really cares about timezone.
102 # GNU date: "date -d @TS"
103 # BSD date: "date -r TS"
104 exim_build_date_override="$(date -u -d "@${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null || date -u -r "${SOURCE_DATE_EPOCH}" "$fmt" 2>/dev/null)"
107 ( echo '# automatically generated file - see ../scripts/reversion'
108 echo EXIM_RELEASE_VERSION='"'"$EXIM_RELEASE_VERSION"'"'
109 test -n "$EXIM_VARIANT_VERSION" && \
110 echo EXIM_VARIANT_VERSION='"'"$EXIM_VARIANT_VERSION"'"'
111 echo EXIM_COMPILE_NUMBER='"'"$EXIM_COMPILE_NUMBER"'"'
112 if [ ".${exim_build_date_override:-}" != "." ]; then
113 echo EXIM_BUILD_DATE_OVERRIDE='"'"${exim_build_date_override}"'"'
117 if [ ! -f version.h ]
119 ( echo '/* automatically generated file - see ../scripts/reversion */'
120 echo '#define EXIM_RELEASE_VERSION "'"$EXIM_RELEASE_VERSION"'"'
121 test -n "$EXIM_VARIANT_VERSION" && \
122 echo '#define EXIM_VARIANT_VERSION "'"$EXIM_VARIANT_VERSION"'"'
123 echo '#ifdef EXIM_VARIANT_VERSION'
124 echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION "-" EXIM_VARIANT_VERSION'
126 echo '#define EXIM_VERSION_STR EXIM_RELEASE_VERSION'
128 if [ ".${exim_build_date_override:-}" != "." ]; then
129 echo '#define EXIM_BUILD_DATE_OVERRIDE "'"${exim_build_date_override}"'"'
134 #test -t 1 && echo ">>> version $EXIM_RELEASE_VERSION $EXIM_VARIANT_VERSION #$EXIM_COMPILE_NUMBER"