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1# Adds version control information to the variable VERS. For2# determining the Version Control System used (if any) it inspects the3# existence of certain subdirectories under SOURCE_DIR (if provided as an4# extra argument, otherwise uses CMAKE_CURRENT_SOURCE_DIR).5 6function(get_source_info path revision repository)7 find_package(Git QUIET)8 if(GIT_FOUND)9 execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --git-dir10 WORKING_DIRECTORY ${path}11 RESULT_VARIABLE git_result12 OUTPUT_VARIABLE git_output13 ERROR_QUIET)14 if(git_result EQUAL 0)15 string(STRIP "${git_output}" git_output)16 get_filename_component(git_dir ${git_output} ABSOLUTE BASE_DIR ${path})17 execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse HEAD18 WORKING_DIRECTORY ${path}19 RESULT_VARIABLE git_result20 OUTPUT_VARIABLE git_output)21 if(git_result EQUAL 0)22 string(STRIP "${git_output}" git_output)23 set(${revision} ${git_output} PARENT_SCOPE)24 endif()25 execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref --symbolic-full-name @{upstream}26 WORKING_DIRECTORY ${path}27 RESULT_VARIABLE git_result28 OUTPUT_VARIABLE git_output29 ERROR_QUIET)30 if(git_result EQUAL 0)31 string(REPLACE "/" ";" branch ${git_output})32 list(GET branch 0 remote)33 else()34 set(remote "origin")35 endif()36 execute_process(COMMAND ${GIT_EXECUTABLE} remote get-url ${remote}37 WORKING_DIRECTORY ${path}38 RESULT_VARIABLE git_result39 OUTPUT_VARIABLE git_output40 ERROR_QUIET)41 if(git_result EQUAL 0)42 # Passwords or tokens should not be stored in the remote URL at the43 # risk of being leaked. In case we find one, error out and teach the44 # user the best practices.45 string(REGEX MATCH "https?://[^/]*:[^/]*@.*"46 http_password "${git_output}")47 if(http_password)48 message(SEND_ERROR "The git remote repository URL has an embedded \49password. Remove the password from the URL or use \50`-DLLVM_FORCE_VC_REPOSITORY=<URL without password>` in order to avoid \51leaking your password (see https://git-scm.com/docs/gitcredentials for \52alternatives).")53 endif()54 # GitHub token formats are described at:55 # https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/about-authentication-to-github#githubs-token-formats56 string(REGEX MATCH57 "https?://(gh[pousr]|github_pat)_[^/]+@github.com.*"58 github_token "${git_output}")59 if(github_token)60 message(SEND_ERROR "The git remote repository URL has an embedded \61GitHub Token. Remove the token from the URL or use \62`-DLLVM_FORCE_VC_REPOSITORY=<URL without token>` in order to avoid leaking \63your token (see https://git-scm.com/docs/gitcredentials for alternatives).")64 endif()65 66 string(STRIP "${git_output}" git_output)67 set(${repository} ${git_output} PARENT_SCOPE)68 else()69 set(${repository} ${path} PARENT_SCOPE)70 endif()71 endif()72 else()73 message(WARNING "Git not found. Version cannot be determined.")74 endif()75endfunction()76