diff options
Diffstat (limited to 'lib/Basic/CMakeLists.txt')
| -rw-r--r-- | lib/Basic/CMakeLists.txt | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/lib/Basic/CMakeLists.txt b/lib/Basic/CMakeLists.txt index 2feb31851cfed..e971b55e8585d 100644 --- a/lib/Basic/CMakeLists.txt +++ b/lib/Basic/CMakeLists.txt @@ -15,8 +15,23 @@ function(find_first_existing_file out_var) endfunction() macro(find_first_existing_vc_file out_var path) + set(git_path "${path}/.git") + + # Normally '.git' is a directory that contains a 'logs/HEAD' file that + # is updated as modifications are made to the repository. In case the + # repository is a Git submodule, '.git' is a file that contains text that + # indicates where the repository's Git directory exists. + if (EXISTS "${git_path}" AND NOT IS_DIRECTORY "${git_path}") + FILE(READ "${git_path}" file_contents) + if("${file_contents}" MATCHES "^gitdir: ([^\n]+)") + # '.git' is indeed a link to the submodule's Git directory. + # Use the path to that Git directory. + set(git_path "${path}/${CMAKE_MATCH_1}") + endif() + endif() + find_first_existing_file(${out_var} - "${path}/.git/logs/HEAD" # Git + "${git_path}/logs/HEAD" # Git or Git submodule "${path}/.svn/wc.db" # SVN 1.7 "${path}/.svn/entries" # SVN 1.6 ) |