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[crt] Use -std=c11 for crtbegin.o/crtend.o 

The source uses C11 syntax such as comments and some compilers print
warnings without specifying this flag.

Differential Revision: https://reviews.llvm.org/D61797

llvm-svn: 360459
This commit is contained in:
Petr Hosek 2019-05-10 19:23:56 +00:00
parent 7598b71488
commit fc86c7fca3
2 changed files with 2 additions and 0 deletions
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1
compiler-rt/cmake/config-ix.cmake
View File

@ -54,6 +54,7 @@ endif ()
# CodeGen options.
check_c_compiler_flag(-ffreestanding COMPILER_RT_HAS_FFREESTANDING_FLAG)
check_c_compiler_flag(-std=c11 COMPILER_RT_HAS_STD_C11_FLAG)
check_cxx_compiler_flag(-fPIC COMPILER_RT_HAS_FPIC_FLAG)
check_cxx_compiler_flag(-fPIE COMPILER_RT_HAS_FPIE_FLAG)
check_cxx_compiler_flag(-fno-builtin COMPILER_RT_HAS_FNO_BUILTIN_FLAG)

1
compiler-rt/lib/crt/CMakeLists.txt
View File

@ -71,6 +71,7 @@ endfunction()
check_cxx_section_exists(".init_array" COMPILER_RT_HAS_INITFINI_ARRAY
SOURCE "__attribute__((constructor)) void f() {}\nint main() { return 0; }\n")
append_list_if(COMPILER_RT_HAS_STD_C11_FLAG -std=c11 CRT_CFLAGS)
append_list_if(COMPILER_RT_HAS_INITFINI_ARRAY -DCRT_HAS_INITFINI_ARRAY CRT_CFLAGS)
append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC CRT_CFLAGS)
append_list_if(COMPILER_RT_HAS_WNO_PEDANTIC -Wno-pedantic CRT_CFLAGS)