From 1be2d32fd502eeb68bd63fb07b0325b25ee357bd Mon Sep 17 00:00:00 2001
From: ShadowNinja <shadowninja@minetest.net>
Date: Mon, 4 May 2015 18:46:49 -0400
Subject: Make Git version detection use VERSION_STRING instead of tags

This fixes the problem where 0.4.12-dev versions were erroneously shown as
0.4.11-dev because the tag was added on a separate branch.  It also fixes a
similar issue when builders didn't fetch new tags when updating.

This also removes the number-of-commits-since-tag field, since it's
incompatible with this.  Said field doesn't seem to be useful anyway if you
have the commit hash.
---
 cmake/Modules/GenerateVersion.cmake | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

(limited to 'cmake')

diff --git a/cmake/Modules/GenerateVersion.cmake b/cmake/Modules/GenerateVersion.cmake
index 9b5304ad5..ad0e38263 100644
--- a/cmake/Modules/GenerateVersion.cmake
+++ b/cmake/Modules/GenerateVersion.cmake
@@ -1,28 +1,24 @@
 # Always run during 'make'
 
-if(VERSION_EXTRA)
-	set(VERSION_GITHASH "${VERSION_STRING}")
-else()
-	execute_process(COMMAND git describe --tag --dirty
+if(DEVELOPMENT_BUILD)
+	execute_process(COMMAND git rev-parse --short HEAD
 		WORKING_DIRECTORY "${GENERATE_VERSION_SOURCE_DIR}"
 		OUTPUT_VARIABLE VERSION_GITHASH OUTPUT_STRIP_TRAILING_WHITESPACE
 		ERROR_QUIET)
-
 	if(VERSION_GITHASH)
-		message(STATUS "*** Detected Git version ${VERSION_GITHASH} ***")
-	else()
-		execute_process(COMMAND git describe --always --tag --dirty
+		set(VERSION_GITHASH "${VERSION_STRING}-${VERSION_GITHASH}")
+		execute_process(COMMAND git diff-index --quiet HEAD
 			WORKING_DIRECTORY "${GENERATE_VERSION_SOURCE_DIR}"
-			OUTPUT_VARIABLE VERSION_GITHASH OUTPUT_STRIP_TRAILING_WHITESPACE
-			ERROR_QUIET)
-		if(VERSION_GITHASH)
-			set(VERSION_GITHASH "${VERSION_STRING}-${VERSION_GITHASH}")
-			message(STATUS "*** Detected shallow Git version ${VERSION_GITHASH} ***")
-		else()
-			set(VERSION_GITHASH "${VERSION_STRING}")
+			RESULT_VARIABLE IS_DIRTY)
+		if(IS_DIRTY)
+			set(VERSION_GITHASH "${VERSION_GITHASH}-dirty")
 		endif()
+		message(STATUS "*** Detected Git version ${VERSION_GITHASH} ***")
 	endif()
 endif()
+if(NOT VERSION_GITHASH)
+	set(VERSION_GITHASH "${VERSION_STRING}")
+endif()
 
 configure_file(
 	${GENERATE_VERSION_SOURCE_DIR}/cmake_config_githash.h.in
-- 
cgit v1.2.3