File llvm-remove-clang-only-flags.patch of Package llvm15
Index: llvm-8.0.0rc3.src/cmake/modules/HandleLLVMOptions.cmake
===================================================================
--- llvm-8.0.0rc3.src.orig/cmake/modules/HandleLLVMOptions.cmake
+++ llvm-8.0.0rc3.src/cmake/modules/HandleLLVMOptions.cmake
@@ -413,8 +413,6 @@ if( MSVC )
# Specific default warnings-as-errors for compilers accepting GCC-compatible warning flags:
if ( LLVM_COMPILER_IS_GCC_COMPATIBLE OR CMAKE_CXX_COMPILER_ID MATCHES "XL" )
- add_flag_if_supported("-Werror=date-time" WERROR_DATE_TIME)
- add_flag_if_supported("-Werror=unguarded-availability-new" WERROR_UNGUARDED_AVAILABILITY_NEW)
endif( LLVM_COMPILER_IS_GCC_COMPATIBLE OR CMAKE_CXX_COMPILER_ID MATCHES "XL" )
# Modules enablement for GCC-compatible compilers:
@@ -586,7 +584,6 @@ if (LLVM_ENABLE_WARNINGS AND (LLVM_COMPI
endif()
add_flag_if_supported("-Wimplicit-fallthrough" IMPLICIT_FALLTHROUGH_FLAG)
- add_flag_if_supported("-Wcovered-switch-default" COVERED_SWITCH_DEFAULT_FLAG)
append_if(USE_NO_UNINITIALIZED "-Wno-uninitialized" CMAKE_CXX_FLAGS)
append_if(USE_NO_MAYBE_UNINITIALIZED "-Wno-maybe-uninitialized" CMAKE_CXX_FLAGS)