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llvm-mirror/cmake/modules/VersionFromVCS.cmake
Geoff Berry 40581de42f [cmake] Fix add_version_info_from_vcs git svn version bug.
Summary:
add_version_info_from_vcs was setting SVN_REVISION to the last fetched
svn revision when using git svn instead of the svn revision
corresponding to HEAD.  This leads to conflicts with the definition of
SVN_REVISION in SVNVersion.inc generated by GetSVN.cmake when HEAD is
not the most recently fetched svn revision.

Use 'git svn info' to determine SVN_REVISION when git svn is being used
instead (as is done in GetSVN.cmake).

Reviewers: beanz

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D16299

llvm-svn: 258148
2016-01-19 17:36:02 +00:00

81 lines
3.0 KiB
CMake

# Adds version control information to the variable VERS. For
# determining the Version Control System used (if any) it inspects the
# existence of certain subdirectories under CMAKE_CURRENT_SOURCE_DIR.
function(add_version_info_from_vcs VERS)
string(REPLACE "svn" "" result "${${VERS}}")
if( EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.svn" )
set(result "${result}svn")
# FindSubversion does not work with symlinks. See PR 8437
if( NOT IS_SYMLINK "${CMAKE_CURRENT_SOURCE_DIR}" )
find_package(Subversion)
endif()
if( Subversion_FOUND )
subversion_wc_info( ${CMAKE_CURRENT_SOURCE_DIR} Project )
if( Project_WC_REVISION )
set(SVN_REVISION ${Project_WC_REVISION} PARENT_SCOPE)
set(result "${result}-r${Project_WC_REVISION}")
endif()
if( Project_WC_URL )
set(LLVM_REPOSITORY ${Project_WC_URL} PARENT_SCOPE)
endif()
endif()
elseif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git )
set(result "${result}git")
# Try to get a ref-id
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 info
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
TIMEOUT 5
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_output)
if( git_result EQUAL 0 )
string(REGEX MATCH "URL: ([^ \n]*)" svn_url ${git_output})
if(svn_url)
set(LLVM_REPOSITORY ${CMAKE_MATCH_1} PARENT_SCOPE)
endif()
string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
"\\2" git_svn_rev_number "${git_output}")
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()
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()
set(${VERS} ${result} PARENT_SCOPE)
endfunction(add_version_info_from_vcs)