From d98311051d73bd7f7e50c02cfc4c4c9834dd923b Mon Sep 17 00:00:00 2001
From: Colin Clark <colin.clark@cclark.uk>
Date: Tue, 25 Jan 2022 10:16:31 +0000
Subject: [PATCH] Update configuration method

Update configuration method so that releases can be auto-generated.
---
 configure.ac     |  2 +-
 gen_changelog.sh |  1 +
 version.sh       | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100755 version.sh

diff --git a/configure.ac b/configure.ac
index 9bb3b36c..103c3fa2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@ dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 dnl GNU General Public License for more details.
 
 AC_PREREQ(2.57)
-AC_INIT([geeqie], m4_translit(m4_esyscmd([if [ $(git tag --list 'v[1-9]*' --points-at HEAD | wc -c) -gt 0 ]; then git tag --list v[1-9]* --points-at HEAD | tail -n 1 | tr -d 'v' ; else git tag --list v[1-9]* | tail -n 1 | tr -d 'v' && echo "+git" && git log --max-count=1 --date=format:"%Y%m%d" --format="%ad" && echo "-" && git rev-parse --quiet --verify --short HEAD; fi ]), m4_newline), [geeqie@freelists.org], [], [http://www.geeqie.org/])
+AC_INIT([geeqie], m4_translit(m4_esyscmd([./version.sh]), m4_newline), [geeqie@freelists.org], [], [http://www.geeqie.org/])
 
 # Add -Werror to the default CFLAGS
 CFLAGS+=" -Werror -Wno-error=deprecated-declarations -Wno-error=sign-compare -Wno-error=return-type"
diff --git a/gen_changelog.sh b/gen_changelog.sh
index 33acebab..2d42d135 100755
--- a/gen_changelog.sh
+++ b/gen_changelog.sh
@@ -11,6 +11,7 @@
 
 [ ! -e "ChangeLog.gqview" ] && exit 1
 [ ! -x "$(command -v git)" ] && exit 0
+[ ! -d ".git" ] && exit 0
 
 LC_ALL=C git log --no-merges --no-notes --encoding=UTF-8 --no-follow --use-mailmap 1b58572cf58e9d2d4a0305108395dab5c66d3a09..HEAD > ChangeLog.$$.new && \
 cat ChangeLog.gqview >> ChangeLog.$$.new && \
diff --git a/version.sh b/version.sh
new file mode 100755
index 00000000..fb527419
--- /dev/null
+++ b/version.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+## @file
+## @brief Generate the Geeqie version number
+##
+## This script is called from configure.ac
+##
+## If the current branch is "master" a revison number is generated of the form:  
+## <n.m>+git<date of last commit>-<last commit hash>  
+## where <n.m> is the most recent tag.  
+## e.g. 1.7+git20220117-732b6935  
+##
+## If not on "master" or no .git directory, a revision number extracted
+## from the first line of the NEWS file is generated.  
+## This situation will occur when compiling from a source .tar.
+## or for a release.  
+## The first line of NEWS must be of the form:  
+## Geeqie <n.m[.p]>
+##
+
+if [ -d .git ]
+then
+	branch=$(git rev-parse --abbrev-ref HEAD)
+
+	if [ "$branch" == "master" ]
+	then
+		IFS=$'.'
+# shellcheck disable=SC2046
+		set -- $(git tag --list v[1-9]* | tail -n 1 | tr -d 'v')
+
+		major_version=$1
+		minor_version=$2
+#		patch_version=$3  # not used on master branch
+
+		echo "$major_version" && echo "." && echo "$minor_version" && echo "+git" && git log --max-count=1 --date=format:"%Y%m%d" --format="%ad" && echo "-" && git rev-parse --quiet --verify --short HEAD
+	else
+		version=$(head -1 NEWS)
+# shellcheck disable=SC2086
+		set -- $version
+		echo "$2"
+	fi
+else
+	version=$(head -1 NEWS)
+# shellcheck disable=SC2086
+	set -- $version
+	echo "$2"
+fi
+
-- 
2.20.1