From: Heiko Schlittermann (HS12-RIPE) <hs@schlittermann.de>
Date: Fri, 2 Apr 2021 10:37:15 +0000 (+0200)
Subject: build: Allow environment EXIM_RELEASE_VERSION
X-Git-Tag: exim-4.95-RC0~84
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/47e7b0467bf1af70378ed5fd4accfb4da60e38bb?ds=inline

build: Allow environment EXIM_RELEASE_VERSION

This should easy automated testing where no .git directory
is available (as is happens with git worktrees)

Setting this environment variable makes the reversion script
using it instead of searching for version.sh or using `git describe`.
---

diff --git a/src/scripts/reversion b/src/scripts/reversion
index 6854112d7..cec1db2fb 100755
--- a/src/scripts/reversion
+++ b/src/scripts/reversion
@@ -29,7 +29,11 @@ fi
 # Read version information that was generated by a previous run of
 # this script, or during the release process.
 
-if   [ -f ./version.sh ]; then
+# Override, used for automated testing w/o access to the
+# .git directory (w.g. inside a git worktree)
+if   [ -n "$EXIM_RELEASE_VERSION" ]; then
+    :
+elif   [ -f ./version.sh ]; then
     .    ./version.sh
 elif [ -f ../src/version.sh ]; then
     .    ../src/version.sh
@@ -51,9 +55,12 @@ elif [ -d ../../.git ] || [ -f ../../.git ] || [ "$1" = release ]; then
             EXIM_VARIANT_VERSION="$3"
             rm -f version.h
     fi
-else
+fi
+
+if [ -z "$EXIM_RELEASE_VERSION" ]; then
     echo "Cannot determine the release number" >&2
-    exit
+    echo "You may want to override it with EXIM_RELEASE_VERSION" >&2
+    exit 1
 fi
 
 # If you are maintaining a patched version of Exim, you can either