From 47526dd36b83213665a88f8dd59c162afb4a205a Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Fri, 16 Sep 2016 09:39:59 +0200
Subject: [PATCH] smarter version.c build that avoids full rebuilds.

---
 src/CMakeLists.txt        | 5 ++++-
 src/kernel/CMakeLists.txt | 3 ++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4070dcbd6..ef3bc782f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -173,7 +173,10 @@ set (SERVER_SRC ${SERVER_SRC}
 )
 endif(CURSES_FOUND)
 
-add_library(game ${ERESSEA_SRC})
+add_library(version OBJECT ${VERSION_SRC})
+add_library(game ${ERESSEA_SRC}
+  $<TARGET_OBJECTS:version>
+)
 add_executable(eressea ${SERVER_SRC})
 target_link_libraries(eressea
   game
diff --git a/src/kernel/CMakeLists.txt b/src/kernel/CMakeLists.txt
index 016c8fb18..2c9da7dc0 100644
--- a/src/kernel/CMakeLists.txt
+++ b/src/kernel/CMakeLists.txt
@@ -33,7 +33,6 @@ jsonconf.test.c
 )
 
 SET(_FILES
-version.c
 alliance.c
 ally.c
 build.c
@@ -65,6 +64,8 @@ xmlreader.c
 jsonconf.c
 )
 
+SET(VERSION_SRC ${PROJECT_NAME}/version.c PARENT_SCOPE)
+
 FOREACH(_FILE ${_FILES})
     LIST(APPEND _SOURCES ${PROJECT_NAME}/${_FILE})
 ENDFOREACH(_FILE)