Use CMAKE_C_COMPILER_ARG1 in compiler invocation

This is needed when using compiler wrappers such as ccache or distcc
and should address the failure on clang-x86_64-debian-fast bot.

Differential Revision: https://reviews.llvm.org/D62104

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@361111 91177308-0d34-0410-b5e6-96231b3b80d8

cmake/Modules/AddCompilerRT.cmake

@@ -262,10 +262,11 @@ function(add_compiler_rt_runtime name type)
       string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
              ${CMAKE_C_COMPILE_OBJECT})
       set(compile_command_${libname} "${CMAKE_C_COMPILE_OBJECT}")
+
       set(output_file_${libname} ${output_name_${libname}}${CMAKE_C_OUTPUT_EXTENSION})
       foreach(substitution ${substitutions})
         if(substitution STREQUAL "<CMAKE_C_COMPILER>")
-          string(REPLACE "<CMAKE_C_COMPILER>" "${CMAKE_C_COMPILER}"
+          string(REPLACE "<CMAKE_C_COMPILER>" "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}"
                  compile_command_${libname} ${compile_command_${libname}})
         elseif(substitution STREQUAL "<OBJECT>")
           string(REPLACE "<OBJECT>" "${output_dir_${libname}}/${output_file_${libname}}"

lib/crt/CMakeLists.txt

@@ -25,8 +25,8 @@ function(check_cxx_section_exists section output)
   set(test_compile_command "${CMAKE_C_COMPILE_OBJECT}")
   foreach(substitution ${substitutions})
     if(substitution STREQUAL "<CMAKE_C_COMPILER>")
-      string(REPLACE "<CMAKE_C_COMPILER>"
-             "${CMAKE_C_COMPILER}" test_compile_command ${test_compile_command})
+      string(REPLACE "<CMAKE_C_COMPILER>" "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}"
+             test_compile_command ${test_compile_command})
     elseif(substitution STREQUAL "<OBJECT>")
       string(REPLACE "<OBJECT>" "${TARGET_NAME}/CheckSectionExists.o"
              test_compile_command ${test_compile_command})