1# Figure out if we can track VC revisions.
2function(find_first_existing_file out_var)
3  foreach(file ${ARGN})
4    if(EXISTS "${file}")
5      set(${out_var} "${file}" PARENT_SCOPE)
6      return()
7    endif()
8  endforeach()
9endfunction()
10
11macro(find_first_existing_vc_file out_var path)
12  find_first_existing_file(${out_var}
13    "${path}/.git/logs/HEAD" # Git
14    "${path}/.svn/wc.db"     # SVN 1.7
15    "${path}/.svn/entries"   # SVN 1.6
16    )
17endmacro()
18
19find_first_existing_vc_file(llvm_vc "${LLVM_MAIN_SRC_DIR}")
20
21# The VC revision include that we want to generate.
22set(version_inc "${CMAKE_CURRENT_BINARY_DIR}/LLVMLTORevision.h")
23
24set(get_svn_script "${LLVM_MAIN_SRC_DIR}/cmake/modules/GenerateVersionFromCVS.cmake")
25
26if(DEFINED llvm_vc)
27  # Create custom target to generate the VC revision include.
28  add_custom_command(OUTPUT "${version_inc}"
29    DEPENDS "${llvm_vc}" "${get_svn_script}"
30    COMMAND
31    ${CMAKE_COMMAND} "-DSOURCE_DIR=${LLVM_MAIN_SRC_DIR}"
32                     "-DNAME=LLVM_REVISION"
33                     "-DHEADER_FILE=${version_inc}"
34                     -P "${get_svn_script}")
35
36  # Mark the generated header as being generated.
37  set_source_files_properties("${version_inc}"
38    PROPERTIES GENERATED TRUE
39               HEADER_FILE_ONLY TRUE)
40
41  # Tell Version.cpp that it needs to build with -DHAVE_SVN_VERSION_INC.
42  set_source_files_properties(Version.cpp
43    PROPERTIES COMPILE_DEFINITIONS "HAVE_SVN_VERSION_INC")
44else()
45  # Not producing a VC revision include.
46  set(version_inc)
47endif()
48
49
50add_llvm_library(LLVMLTO
51  LTO.cpp
52  LTOModule.cpp
53  LTOCodeGenerator.cpp
54  UpdateCompilerUsed.cpp
55  ThinLTOCodeGenerator.cpp
56  ${version_inc}
57
58  ADDITIONAL_HEADER_DIRS
59  ${LLVM_MAIN_INCLUDE_DIR}/llvm/LTO
60)
61
62add_dependencies(LLVMLTO intrinsics_gen)
63