From 09e2b2fc4192236b7a9b38bce5b28b2669efa5ba Mon Sep 17 00:00:00 2001
From: anmaster <anmaster@837edb03-e0f3-0310-88ca-d4d4e8b29345>
Date: Fri, 1 Jan 2010 21:58:42 +0000
Subject: [PATCH] Make Cmake rerun svnversion even when just building and not
 configuring. Unknown if it works with MSVC as target. If not (and anyone
 cares) there are more complex ways to make it work. Will not cause
 recompilation if not required.

git-svn-id: http://supertux.lethargik.org/svn/supertux/trunk/supertux@6248 837edb03-e0f3-0310-88ca-d4d4e8b29345
---
 CMakeLists.txt  | 40 ++++++++++++++++++++++++++++++++++------
 version.h.cmake |  7 -------
 2 files changed, 34 insertions(+), 13 deletions(-)
 delete mode 100644 version.h.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed23aa636..fde724fbe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,10 +32,13 @@
 #
 
 
-## Project name to use as command prefix
+## Project name to use as command prefix.
 
 PROJECT(SUPERTUX)
 
+## Version, for display in title bar.
+## Will add r<revision number> to the end if svnversion is available.
+SET(SUPERTUX_VERSION "0.3.2-SVN")
 
 ### CMake configuration
 
@@ -107,11 +110,36 @@ ENDIF(CURL_FOUND)
 MARK_AS_ADVANCED(SVNVERSION_EXECUTABLE)
 FIND_PROGRAM(SVNVERSION_EXECUTABLE svnversion)
 IF(SVNVERSION_EXECUTABLE)
-  EXECUTE_PROCESS(COMMAND svnversion -n ${CMAKE_CURRENT_SOURCE_DIR}
-                  OUTPUT_VARIABLE SUPERTUX_WC_REVISION)
-  SET(REVISION " r${SUPERTUX_WC_REVISION}")
+  ADD_CUSTOM_TARGET(svnversion ALL
+                    cmake -E echo "#ifndef VERSION_H" > "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo "#define VERSION_H" >> "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo_append "#define PACKAGE_VERSION \"${SUPERTUX_VERSION}r" >> "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND svnversion -n ${CMAKE_CURRENT_SOURCE_DIR} >> "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo "\"" >>  "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo "#endif" >>  "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E copy_if_different "${CMAKE_BINARY_DIR}/version.h.tmp" "${CMAKE_BINARY_DIR}/version.h"
+                    COMMAND cmake -E remove "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
+                    COMMENT "Updating ${CMAKE_BINARY_DIR}/version.h..."
+                    VERBATIM)
+ELSE(SVNVERSION_EXECUTABLE)
+  ADD_CUSTOM_TARGET(svnversion ALL
+                    cmake -E echo "#ifndef VERSION_H" > "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo "#define VERSION_H" >> "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo "#define PACKAGE_VERSION \"${SUPERTUX_VERSION}\"" >> "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E echo "#endif" >>  "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    COMMAND cmake -E copy_if_different "${CMAKE_BINARY_DIR}/version.h.tmp" "${CMAKE_BINARY_DIR}/version.h"
+                    COMMAND cmake -E remove "${CMAKE_BINARY_DIR}/version.h.tmp"
+                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                    COMMENT "Updating ${CMAKE_BINARY_DIR}/version.h..."
+                    VERBATIM)
 ENDIF(SVNVERSION_EXECUTABLE)
 
+SET_SOURCE_FILES_PROPERTIES(${CMAKE_BINARY_DIR}/version.h
+                            PROPERTIES GENERATED true)
+SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp
+                            PROPERTIES OBJECT_DEPENDS "${CMAKE_BINARY_DIR}/version.h")
+
 ## Check platform-dependent build options
 
 INCLUDE(ConfigureChecks)
@@ -119,7 +147,6 @@ INCLUDE(ConfigureChecks)
 ## Create config.h and version.h
 
 configure_file(config.h.cmake ${CMAKE_BINARY_DIR}/config.h )
-configure_file(version.h.cmake ${CMAKE_BINARY_DIR}/version.h )
 include_directories (${CMAKE_BINARY_DIR}/)
 
 ## Also execute instructions in src/squirrel/CMakeLists.txt
@@ -302,7 +329,8 @@ SET(EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_SOURCE_DIR})
 
 ## Add target for supertux binary
 
-ADD_EXECUTABLE(supertux2 ${SUPERTUX_SOURCES_C} ${SUPERTUX_SOURCES_CXX} ${TINYGETTEXT_SOURCES_CXX})
+ADD_EXECUTABLE(supertux2 ${CMAKE_BINARY_DIR}/version.h ${SUPERTUX_SOURCES_C} ${SUPERTUX_SOURCES_CXX} ${TINYGETTEXT_SOURCES_CXX})
+ADD_DEPENDENCIES(supertux2 svnversion)
 
 ## Link supertux binary with squirrel and other libraries
 
diff --git a/version.h.cmake b/version.h.cmake
deleted file mode 100644
index 49dd996ab..000000000
--- a/version.h.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef VERSION_H
-#define VERSION_H
-
-#define PACKAGE_VERSION "0.3.2-SVN${REVISION}"
-
-#endif /*VERSION_H*/
-
-- 
2.11.0