From c720c1db11732e6e5ab60a6db41e155d4ab6f708 Mon Sep 17 00:00:00 2001
From: Han Zhu <zhuhan7737@gmail.com>
Date: Mon, 17 Apr 2023 10:08:34 -0700
Subject: [PATCH] Revert "[clang][cmake] Add options to pass in vcs repo and
 revision info"

This reverts commit 1f5e737fc135bf991889a1364b8f8c5edc3953d2.
---
 clang/lib/Basic/CMakeLists.txt                  | 14 --------------
 llvm/cmake/modules/GenerateVersionFromVCS.cmake | 14 ++++++--------
 2 files changed, 6 insertions(+), 22 deletions(-)

diff --git a/clang/lib/Basic/CMakeLists.txt b/clang/lib/Basic/CMakeLists.txt
index c05036a..8c828e4 100644
--- a/clang/lib/Basic/CMakeLists.txt
+++ b/clang/lib/Basic/CMakeLists.txt
@@ -14,19 +14,9 @@ set(generate_vcs_version_script "${LLVM_CMAKE_DIR}/GenerateVersionFromVCS.cmake"
 if(llvm_vc AND LLVM_APPEND_VC_REV)
   set(llvm_source_dir ${LLVM_MAIN_SRC_DIR})
 endif()
-if (LLVM_VC_REPOSITORY AND LLVM_VC_REVISION)
-  set(llvm_source_dir ${LLVM_SOURCE_DIR})
-  set(llvm_vc_repository ${LLVM_VC_REPOSITORY})
-  set(llvm_vc_revision ${LLVM_VC_REVISION})
-endif()
 if(clang_vc AND LLVM_APPEND_VC_REV)
   set(clang_source_dir ${CLANG_SOURCE_DIR})
 endif()
-if (CLANG_VC_REPOSITORY AND CLANG_VC_REVISION)
-  set(clang_source_dir ${CLANG_SOURCE_DIR})
-  set(clang_vc_repository ${CLANG_VC_REPOSITORY})
-  set(clang_vc_revision ${CLANG_VC_REVISION})
-endif()
 
 # Create custom target to generate the VC revision include.
 add_custom_command(OUTPUT "${version_inc}"
@@ -34,11 +24,7 @@ add_custom_command(OUTPUT "${version_inc}"
   COMMAND ${CMAKE_COMMAND} "-DNAMES=\"LLVM;CLANG\""
                            "-DLLVM_SOURCE_DIR=${llvm_source_dir}"
                            "-DCLANG_SOURCE_DIR=${clang_source_dir}"
-                           "-DCLANG_VC_REPOSITORY=${clang_vc_repository}"
-                           "-DCLANG_VC_REVISION=${clang_vc_revision}"
                            "-DHEADER_FILE=${version_inc}"
-                           "-DLLVM_VC_REPOSITORY=${llvm_vc_repository}"
-                           "-DLLVM_VC_REVISION=${llvm_vc_revision}"
                            -P "${generate_vcs_version_script}")
 
 # Mark the generated header as being generated.
diff --git a/llvm/cmake/modules/GenerateVersionFromVCS.cmake b/llvm/cmake/modules/GenerateVersionFromVCS.cmake
index d5bdf43..d8ec54d 100644
--- a/llvm/cmake/modules/GenerateVersionFromVCS.cmake
+++ b/llvm/cmake/modules/GenerateVersionFromVCS.cmake
@@ -18,7 +18,10 @@ include(VersionFromVCS)
 # Handle strange terminals
 set(ENV{TERM} "dumb")
 
-function(append_info name revision repository)
+function(append_info name path)
+  if(path)
+    get_source_info("${path}" revision repository)
+  endif()
   if(revision)
     file(APPEND "${HEADER_FILE}.tmp"
       "#define ${name}_REVISION \"${revision}\"\n")
@@ -36,15 +39,10 @@ function(append_info name revision repository)
 endfunction()
 
 foreach(name IN LISTS NAMES)
-  if(${name}_VC_REPOSITORY AND ${name}_VC_REVISION)
-    set(revision ${${name}_VC_REVISION})
-    set(repository ${${name}_VC_REPOSITORY})
-  elseif(DEFINED ${name}_SOURCE_DIR)
-    get_source_info(${${name}_SOURCE_DIR} revision repository)
-  else()
+  if(NOT DEFINED ${name}_SOURCE_DIR)
     message(FATAL_ERROR "${name}_SOURCE_DIR is not defined")
   endif()
-  append_info(${name} ${revision} ${repository})
+  append_info(${name} "${${name}_SOURCE_DIR}")
 endforeach()
 
 # Copy the file only if it has changed.
-- 
2.7.4