CMake: Don't run 'git svn' if there is no .git/svn directory.
If the local checkout does not have 'git svn' references set up, don't try
to use 'git svn' for version information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169749 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/modules/VersionFromVCS.cmake b/cmake/modules/VersionFromVCS.cmake
index d6a2ae5..26314d4 100644
--- a/cmake/modules/VersionFromVCS.cmake
+++ b/cmake/modules/VersionFromVCS.cmake
@@ -20,49 +20,51 @@
elseif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git )
set(result "${result}git")
# Try to get a ref-id
- find_program(git_executable NAMES git git.exe git.cmd)
- if( git_executable )
- set(is_git_svn_rev_exact false)
- execute_process(COMMAND ${git_executable} svn log --limit=1 --oneline
- WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
- TIMEOUT 5
- RESULT_VARIABLE git_result
- OUTPUT_VARIABLE git_output)
- if( git_result EQUAL 0 )
- string(REGEX MATCH r[0-9]+ git_svn_rev ${git_output})
- string(LENGTH "${git_svn_rev}" rev_length)
- math(EXPR rev_length "${rev_length}-1")
- string(SUBSTRING "${git_svn_rev}" 1 ${rev_length} git_svn_rev_number)
- set(SVN_REVISION ${git_svn_rev_number} PARENT_SCOPE)
- set(git_svn_rev "-svn-${git_svn_rev}")
-
- # Determine if the HEAD points directly at a subversion revision.
- execute_process(COMMAND ${git_executable} svn find-rev HEAD
- WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
- TIMEOUT 5
- RESULT_VARIABLE git_result
- OUTPUT_VARIABLE git_output)
+ if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git/svn )
+ find_program(git_executable NAMES git git.exe git.cmd)
+ if( git_executable )
+ set(is_git_svn_rev_exact false)
+ execute_process(COMMAND ${git_executable} svn log --limit=1 --oneline
+ WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+ TIMEOUT 5
+ RESULT_VARIABLE git_result
+ OUTPUT_VARIABLE git_output)
if( git_result EQUAL 0 )
- string(STRIP "${git_output}" git_head_svn_rev_number)
- if( git_head_svn_rev_number EQUAL git_svn_rev_number )
- set(is_git_svn_rev_exact true)
+ string(REGEX MATCH r[0-9]+ git_svn_rev ${git_output})
+ string(LENGTH "${git_svn_rev}" rev_length)
+ math(EXPR rev_length "${rev_length}-1")
+ string(SUBSTRING "${git_svn_rev}" 1 ${rev_length} git_svn_rev_number)
+ set(SVN_REVISION ${git_svn_rev_number} PARENT_SCOPE)
+ set(git_svn_rev "-svn-${git_svn_rev}")
+
+ # Determine if the HEAD points directly at a subversion revision.
+ execute_process(COMMAND ${git_executable} svn find-rev HEAD
+ WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+ TIMEOUT 5
+ RESULT_VARIABLE git_result
+ OUTPUT_VARIABLE git_output)
+ if( git_result EQUAL 0 )
+ string(STRIP "${git_output}" git_head_svn_rev_number)
+ if( git_head_svn_rev_number EQUAL git_svn_rev_number )
+ set(is_git_svn_rev_exact true)
+ endif()
endif()
+ else()
+ set(git_svn_rev "")
endif()
- else()
- set(git_svn_rev "")
- endif()
- execute_process(COMMAND
- ${git_executable} rev-parse --short HEAD
- WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
- TIMEOUT 5
- RESULT_VARIABLE git_result
- OUTPUT_VARIABLE git_output)
- if( git_result EQUAL 0 AND NOT is_git_svn_rev_exact )
- string(STRIP "${git_output}" git_ref_id)
- set(GIT_COMMIT ${git_ref_id} PARENT_SCOPE)
- set(result "${result}${git_svn_rev}-${git_ref_id}")
- else()
- set(result "${result}${git_svn_rev}")
+ execute_process(COMMAND
+ ${git_executable} rev-parse --short HEAD
+ WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+ TIMEOUT 5
+ RESULT_VARIABLE git_result
+ OUTPUT_VARIABLE git_output)
+ if( git_result EQUAL 0 AND NOT is_git_svn_rev_exact )
+ string(STRIP "${git_output}" git_ref_id)
+ set(GIT_COMMIT ${git_ref_id} PARENT_SCOPE)
+ set(result "${result}${git_svn_rev}-${git_ref_id}")
+ else()
+ set(result "${result}${git_svn_rev}")
+ endif()
endif()
endif()
endif()