Make GetSVN.cmake do its VCS queries with native CMake code.

This lets the queries work on Windows as well as Linux.

This does mean make and cmake aren't using the same scripts to do the
queries (again), but at least GetSVN.cmake understands git and git-svn
as well as svn now.

llvm-svn: 223425

diff --git a/llvm/cmake/modules/GetSVN.cmake b/llvm/cmake/modules/GetSVN.cmake
index 4e32c09061ecba6742d3af21bd3fc35f4560ddc2..1f6075f4795e9dfd6b02d42be9d9b0ee6c078c69 100644 (file)
--- a/llvm/cmake/modules/GetSVN.cmake
+++ b/llvm/cmake/modules/GetSVN.cmake
@@ -19,13 +19,78 @@ get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
 # Handle strange terminals
 set(ENV{TERM} "dumb")
 
+macro(get_source_info_svn path revision repository)
+  # FindSubversion does not work with symlinks. See PR 8437
+  if (NOT IS_SYMLINK "${path}")
+    find_package(Subversion)
+  endif()
+  if (Subversion_FOUND)
+    subversion_wc_info( ${path} Project )
+    if (Project_WC_REVISION)
+      set(${revision} ${Project_WC_REVISION} PARENT_SCOPE)
+    endif()
+    if (Project_WC_URL)
+      set(${repository} ${Project_WC_URL} PARENT_SCOPE)
+    endif()
+  endif()
+endmacro()
+
+macro(get_source_info_git_svn path revision repository)
+  find_program(git_executable NAMES git git.exe git.cmd)
+  if (git_executable)
+    execute_process(COMMAND ${git_executable} svn info
+      WORKING_DIRECTORY ${path}
+      TIMEOUT 5
+      RESULT_VARIABLE git_result
+      OUTPUT_VARIABLE git_output)
+    if (git_result EQUAL 0)
+      string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
+        "\\2" git_svn_rev "${git_output}")
+      set(${revision} ${git_svn_rev} PARENT_SCOPE)
+      string(REGEX REPLACE "^(.*\n)?URL: ([^\n]+).*"
+        "\\2" git_url "${git_output}")
+      set(${repository} ${git_url} PARENT_SCOPE)
+    endif()
+  endif()
+endmacro()
+
+macro(get_source_info_git path revision repository)
+  find_program(git_executable NAMES git git.exe git.cmd)
+  if (git_executable)
+    execute_process(COMMAND ${git_executable} log -1 --pretty=format:%H
+      WORKING_DIRECTORY ${path}
+      TIMEOUT 5
+      RESULT_VARIABLE git_result
+      OUTPUT_VARIABLE git_output)
+    if (git_result EQUAL 0)
+      set(${revision} ${git_output} PARENT_SCOPE)
+    endif()
+    execute_process(COMMAND ${git_executable} remote -v
+      WORKING_DIRECTORY ${path}
+      TIMEOUT 5
+      RESULT_VARIABLE git_result
+      OUTPUT_VARIABLE git_output)
+    if (git_result EQUAL 0)
+      string(REGEX REPLACE "^(.*\n)?[^ \t]+[ \t]+([^ \t\n]+)[ \t]+\\(fetch\\).*"
+        "\\2" git_url "${git_output}")
+      set(${repository} "${git_url}" PARENT_SCOPE)
+    endif()
+  endif()
+endmacro()
+
+function(get_source_info path revision repository)
+  if (EXISTS "${path}/.svn")
+    get_source_info_svn("${path}" revision repository)
+  elseif (EXISTS "${path}/.git/svn")
+    get_source_info_git_svn("${path}" revision repository)
+  elseif (EXISTS "${path}/.git")
+    get_source_info_git("${path}" revision repository)
+  endif()
+endfunction()
+
 function(append_info name path)
-  execute_process(COMMAND "${LLVM_DIR}/utils/GetSourceVersion" "${path}"
-    OUTPUT_VARIABLE revision)
+  get_source_info("${path}" revision repository)
   string(STRIP "${revision}" revision)
-  execute_process(COMMAND "${LLVM_DIR}/utils/GetRepositoryPath" "${path}"
-    OUTPUT_VARIABLE repository
-    OUTPUT_STRIP_TRAILING_WHITESPACE)
   string(STRIP "${repository}" repository)
   file(APPEND "${HEADER_FILE}.txt"
     "#define ${name}_REVISION \"${revision}\"\n")