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# 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
# with a default in case anything fails, for examble when using git-svn
set(MY_WC_REVISION "unknown")
# Guess if this is a SVN working copy and then look up the revision
if(EXISTS ${SOURCE_DIR}/.svn/)
if(Subversion_FOUND)
Subversion_WC_INFO(${SOURCE_DIR} MY)
endif()
endif()
# BUILD_PLATFORM and BUILD_PLATFORM are taken from CMake
# but BUILD_DATE and BUILD_TIME are plataform dependant
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
# and avoid needless rebuilds
# TODO: verify this comment is true, as BUILD_TIME probably changes
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
buildinfo.h.txt buildinfo.h)
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