# Figure out if we can track VC revisions.
function(find_first_existing_file out_var)
foreach(file ${ARGN})
if(EXISTS "${file}")
set(${out_var} "${file}" PARENT_SCOPE)
return()
endif()
endforeach()
endfunction()
macro(find_first_existing_vc_file out_var path)
find_first_existing_file(${out_var}
"${path}/.git/logs/HEAD" # Git
"${path}/.svn/wc.db" # SVN 1.7
"${path}/.svn/entries" # SVN 1.6
)
endmacro()
find_first_existing_vc_file(llvm_vc "${LLVM_MAIN_SRC_DIR}")
# The VC revision include that we want to generate.
set(version_inc "${CMAKE_CURRENT_BINARY_DIR}/LLVMLTORevision.h")
set(get_svn_script "${LLVM_MAIN_SRC_DIR}/cmake/modules/GenerateVersionFromCVS.cmake")
if(DEFINED llvm_vc)
# Create custom target to generate the VC revision include.
add_custom_command(OUTPUT "${version_inc}"
DEPENDS "${llvm_vc}" "${get_svn_script}"
COMMAND
${CMAKE_COMMAND} "-DSOURCE_DIR=${LLVM_MAIN_SRC_DIR}"
"-DNAME=LLVM_REVISION"
"-DHEADER_FILE=${version_inc}"
-P "${get_svn_script}")
# Mark the generated header as being generated.
set_source_files_properties("${version_inc}"
PROPERTIES GENERATED TRUE
HEADER_FILE_ONLY TRUE)
# Tell Version.cpp that it needs to build with -DHAVE_SVN_VERSION_INC.
set_source_files_properties(Version.cpp
PROPERTIES COMPILE_DEFINITIONS "HAVE_SVN_VERSION_INC")
else()
# Not producing a VC revision include.
set(version_inc)
endif()
add_llvm_library(LLVMLTO
LTO.cpp
LTOModule.cpp
LTOCodeGenerator.cpp
UpdateCompilerUsed.cpp
ThinLTOCodeGenerator.cpp
${version_inc}
ADDITIONAL_HEADER_DIRS
${LLVM_MAIN_INCLUDE_DIR}/llvm/LTO
)
add_dependencies(LLVMLTO intrinsics_gen)