From 1447c9790972f501dddbfca371a77dc7fd3f8938 Mon Sep 17 00:00:00 2001
From: Serge Guelton <sguelton@quarkslab.com>
Date: Mon, 19 Mar 2018 21:35:30 +0000
Subject: [PATCH] Accept any filepath in llvm_check_source_file_list

Cmake function llvm_check_source_file_list currently only accepts paths
relative to current CMAKE_SOURCE_DIR or relative to argument SOURCE_DIR.

Extend it to accept any path, including absolute ones.

Differential revision: https://reviews.llvm.org/D44625

llvm-svn: 327912
---
 llvm/cmake/modules/LLVMProcessSources.cmake | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/llvm/cmake/modules/LLVMProcessSources.cmake b/llvm/cmake/modules/LLVMProcessSources.cmake
index 8b7dc65d9497..f65f31d797cf 100644
--- a/llvm/cmake/modules/LLVMProcessSources.cmake
+++ b/llvm/cmake/modules/LLVMProcessSources.cmake
@@ -69,14 +69,18 @@ endfunction(llvm_process_sources)
 
 function(llvm_check_source_file_list)
   cmake_parse_arguments(ARG "" "SOURCE_DIR" "" ${ARGN})
-  set(listed ${ARG_UNPARSED_ARGUMENTS})
+  foreach(l ${ARG_UNPARSED_ARGUMENTS})
+      get_filename_component(fp ${l} REALPATH)
+      list(APPEND listed ${fp})
+  endforeach()
+
   if(ARG_SOURCE_DIR)
     file(GLOB globbed
-         RELATIVE "${CMAKE_CURRENT_LIST_DIR}"
          "${ARG_SOURCE_DIR}/*.c" "${ARG_SOURCE_DIR}/*.cpp")
   else()
     file(GLOB globbed *.c *.cpp)
   endif()
+
   foreach(g ${globbed})
     get_filename_component(fn ${g} NAME)
     if(ARG_SOURCE_DIR)
@@ -84,15 +88,21 @@ function(llvm_check_source_file_list)
     else()
       set(entry "${fn}")
     endif()
+    get_filename_component(gp ${g} REALPATH)
 
     # Don't reject hidden files. Some editors create backups in the
     # same directory as the file.
     if (NOT "${fn}" MATCHES "^\\.")
       list(FIND LLVM_OPTIONAL_SOURCES ${entry} idx)
       if( idx LESS 0 )
-        list(FIND listed ${entry} idx)
+        list(FIND listed ${gp} idx)
         if( idx LESS 0 )
-          message(SEND_ERROR "Found unknown source file ${g}
+          if(ARG_SOURCE_DIR)
+              set(fn_relative "${ARG_SOURCE_DIR}/${fn}")
+          else()
+              set(fn_relative "${fn}")
+          endif()
+          message(SEND_ERROR "Found unknown source file ${fn_relative}
 Please update ${CMAKE_CURRENT_LIST_FILE}\n")
         endif()
       endif()