fix for cmake not having the correct svn revision in buildinfo, now generate a header every build with the time, date, svn revision.

1 files changed, 34 insertions, 0 deletions

diff --git a/build_files/cmake/buildinfo.cmake b/build_files/cmake/buildinfo.cmake
new file mode 100644
index 00000000000..e8b2caabb19
--- /dev/null
+++ b/build_files/cmake/buildinfo.cmake
@@ -0,0 +1,34 @@
+# this is called by cmake as an extermal process from
+# ./source/creator/CMakeLists.txt to write ./source/creator/buildinfo.h
+
+# the FindSubversion.cmake module is part of the standard distribution
+include(FindSubversion)
+# extract working copy information for SOURCE_DIR into MY_XXX variables
+if(Subversion_FOUND)
+	Subversion_WC_INFO(${SOURCE_DIR} MY)
+else()
+	set(MY_WC_REVISION "unknown")
+endif()
+
+# BUILD_PLATFORM and BUILD_PLATFORM are taken from CMake
+if(UNIX)
+	execute_process(COMMAND date "+%Y-%m-%d" OUTPUT_VARIABLE BUILD_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
+	execute_process(COMMAND date "+%H:%M:%S" OUTPUT_VARIABLE BUILD_TIME OUTPUT_STRIP_TRAILING_WHITESPACE)  
+endif()
+
+if(WIN32)
+	execute_process(COMMAND cmd /c date /t OUTPUT_VARIABLE BUILD_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
+	execute_process(COMMAND cmd /c time /t OUTPUT_VARIABLE BUILD_TIME OUTPUT_STRIP_TRAILING_WHITESPACE)  
+endif()
+
+# write a file with the SVNVERSION define
+file(WRITE buildinfo.h.txt
+	"#define BUILD_REV ${MY_WC_REVISION}\n"
+	"#define BUILD_DATE ${BUILD_DATE}\n"
+	"#define BUILD_TIME ${BUILD_TIME}\n"
+)
+
+# copy the file to the final header only if the version changes
+# reduces needless rebuilds
+execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                        buildinfo.h.txt buildinfo.h)