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| author | Don Hinton <hintonda@gmail.com> | 2017-09-02 17:28:39 +0000 |
|---|---|---|
| committer | Don Hinton <hintonda@gmail.com> | 2017-09-02 17:28:39 +0000 |
| commit | b74923ccea24648db103a862aecad9d7b5fa529d (patch) | |
| tree | 82711fdfaa2ae8b243ae23d18683df0b87d9dc62 /cmake | |
| parent | c764030f4b357f0da67a1fa4722b4d9f9c0bf5fc (diff) | |
| download | llvm-b74923ccea24648db103a862aecad9d7b5fa529d.tar.gz | |
[CMAKE] Move version control macros to AddLLVM.cmake so they can be reused by clang, etc.
Summary:
Move version control macros, find_first_existing_file and
find_first_existing_vc_file to AddLLVM.cmake so they can be reused by sub projects
like clang.
Differential Revision: https://reviews.llvm.org/D36971
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312419 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/modules/AddLLVM.cmake | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake index 61417865c77..93a55257e38 100644 --- a/cmake/modules/AddLLVM.cmake +++ b/cmake/modules/AddLLVM.cmake @@ -1499,3 +1499,36 @@ function(setup_dependency_debugging name) set(sandbox_command "sandbox-exec -p '(version 1) (allow default) ${deny_attributes_gen} ${deny_intrinsics_gen}'") set_target_properties(${name} PROPERTIES RULE_LAUNCH_COMPILE ${sandbox_command}) endfunction() + +# 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_program(git_executable NAMES git git.exe git.cmd) + # Run from a subdirectory to force git to print an absolute path. + execute_process(COMMAND ${git_executable} rev-parse --git-dir + WORKING_DIRECTORY ${path}/cmake + RESULT_VARIABLE git_result + OUTPUT_VARIABLE git_dir + ERROR_QUIET) + if(git_result EQUAL 0) + string(STRIP "${git_dir}" git_dir) + set(${out_var} "${git_dir}/logs/HEAD") + # some branchless cases (e.g. 'repo') may not yet have .git/logs/HEAD + if (NOT EXISTS "${git_dir}/logs/HEAD") + file(WRITE "${git_dir}/logs/HEAD" "") + endif() + else() + find_first_existing_file(${out_var} + "${path}/.svn/wc.db" # SVN 1.7 + "${path}/.svn/entries" # SVN 1.6 + ) + endif() +endmacro() |