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93c011eebb
If testing for a warning option like -Wno-<foo> with GCC, GCC won't
print any diagnostic at all, leading to the options being accepted
incorrectly. However later, if compiling a file that actually prints
another warning, GCC will also print warnings about these -Wno-<foo>
options being unrecognized.
This avoids warning spam like this, for every OpenMP source file that
produces build warnings with GCC:
cc1plus: warning: unrecognized command line option ‘-Wno-int-to-void-pointer-cast’
cc1plus: warning: unrecognized command line option ‘-Wno-return-type-c-linkage’
cc1plus: warning: unrecognized command line option ‘-Wno-covered-switch-default’
cc1plus: warning: unrecognized command line option ‘-Wno-enum-constexpr-conversion’
This matches how such warning options are detected and added in
llvm/cmake/modules/HandleLLVMOptions.cmake, e.g. like this:
check_cxx_compiler_flag("-Wclass-memaccess" CXX_SUPPORTS_CLASS_MEMACCESS_FLAG)
append_if(CXX_SUPPORTS_CLASS_MEMACCESS_FLAG "-Wno-class-memaccess" CMAKE_CXX_FLAGS)
This also matches how LLDB warning options were restructured for
GCC compatibility in e546bbfda0ab91cf78c096d8c035851cc7c3b9f3.
Differential Revision: https://reviews.llvm.org/D139922
192 lines
8.6 KiB
CMake
192 lines
8.6 KiB
CMake
#
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#//===----------------------------------------------------------------------===//
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#//
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#// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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#// See https://llvm.org/LICENSE.txt for license information.
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#// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#//
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#//===----------------------------------------------------------------------===//
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#
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# Setup the flags correctly for cmake (covert to string)
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# Pretty them up (STRIP any beginning and trailing whitespace,
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# remove duplicates, remove empty entries)
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macro(libomp_setup_flags flags)
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if(NOT "${${flags}}" STREQUAL "") # if flags are empty, don't do anything
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set(flags_local)
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list(REMOVE_DUPLICATES ${flags}) # remove duplicates
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list(REMOVE_ITEM ${flags} "") # remove empty items
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libomp_list_to_string("${${flags}}" flags_local)
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string(STRIP "${flags_local}" flags_local)
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set(${flags} "${flags_local}")
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endif()
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endmacro()
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# C++ compiler flags
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function(libomp_get_cxxflags cxxflags)
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set(flags_local)
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# GCC silently accepts any -Wno-<foo> option, but warns about those options
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# being unrecognized only if the compilation triggers other warnings to be
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# printed. Therefore, check for whether the compiler supports options in the
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# form -W<foo>, and if supported, add the corresponding -Wno-<foo> option.
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libomp_append(flags_local -fno-exceptions LIBOMP_HAVE_FNO_EXCEPTIONS_FLAG)
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libomp_append(flags_local -fno-rtti LIBOMP_HAVE_FNO_RTTI_FLAG)
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libomp_append(flags_local -Wno-class-memaccess LIBOMP_HAVE_WCLASS_MEMACCESS_FLAG)
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libomp_append(flags_local -Wno-covered-switch-default LIBOMP_HAVE_WCOVERED_SWITCH_DEFAULT_FLAG)
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libomp_append(flags_local -Wno-frame-address LIBOMP_HAVE_WFRAME_ADDRESS_FLAG)
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libomp_append(flags_local -Wno-strict-aliasing LIBOMP_HAVE_WSTRICT_ALIASING_FLAG)
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libomp_append(flags_local -Wstringop-overflow=0 LIBOMP_HAVE_WSTRINGOP_OVERFLOW_FLAG)
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libomp_append(flags_local -Wno-stringop-truncation LIBOMP_HAVE_WSTRINGOP_TRUNCATION_FLAG)
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libomp_append(flags_local -Wno-switch LIBOMP_HAVE_WSWITCH_FLAG)
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libomp_append(flags_local -Wno-uninitialized LIBOMP_HAVE_WUNINITIALIZED_FLAG)
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libomp_append(flags_local -Wno-return-type-c-linkage LIBOMP_HAVE_WRETURN_TYPE_C_LINKAGE_FLAG)
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libomp_append(flags_local -Wno-cast-qual LIBOMP_HAVE_WCAST_QUAL_FLAG)
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libomp_append(flags_local -Wno-int-to-void-pointer-cast LIBOMP_HAVE_WINT_TO_VOID_POINTER_CAST_FLAG)
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# libomp_append(flags_local -Wconversion LIBOMP_HAVE_WCONVERSION_FLAG)
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libomp_append(flags_local /GS LIBOMP_HAVE_GS_FLAG)
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libomp_append(flags_local /EHsc LIBOMP_HAVE_EHSC_FLAG)
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libomp_append(flags_local /Oy- LIBOMP_HAVE_OY__FLAG)
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if(${IA32} OR ${INTEL64})
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libomp_append(flags_local -mrtm LIBOMP_HAVE_MRTM_FLAG)
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endif()
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# Intel(R) C Compiler flags
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libomp_append(flags_local /Qsafeseh LIBOMP_HAVE_QSAFESEH_FLAG)
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libomp_append(flags_local -Qoption,cpp,--extended_float_types LIBOMP_HAVE_EXTENDED_FLOAT_TYPES_FLAG)
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libomp_append(flags_local -Qlong_double LIBOMP_HAVE_LONG_DOUBLE_FLAG)
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libomp_append(flags_local -Qdiag-disable:177 LIBOMP_HAVE_DIAG_DISABLE_177_FLAG)
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if(${RELEASE_BUILD} OR ${RELWITHDEBINFO_BUILD})
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libomp_append(flags_local -Qinline-min-size=1 LIBOMP_HAVE_INLINE_MIN_SIZE_FLAG)
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endif()
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# Architectural C and C++ flags
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if(${IA32})
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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libomp_append(flags_local -m32 LIBOMP_HAVE_M32_FLAG)
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endif()
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libomp_append(flags_local /arch:SSE2 LIBOMP_HAVE_ARCH_SSE2_FLAG)
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libomp_append(flags_local -msse2 LIBOMP_HAVE_MSSE2_FLAG)
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libomp_append(flags_local -falign-stack=maintain-16-byte LIBOMP_HAVE_FALIGN_STACK_FLAG)
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elseif(${MIC})
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libomp_append(flags_local -mmic LIBOMP_HAVE_MMIC_FLAG)
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libomp_append(flags_local -ftls-model=initial-exec LIBOMP_HAVE_FTLS_MODEL_FLAG)
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libomp_append(flags_local "-opt-streaming-stores never" LIBOMP_HAVE_OPT_STREAMING_STORES_FLAG)
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endif()
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set(cxxflags_local ${flags_local} ${LIBOMP_CXXFLAGS})
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libomp_setup_flags(cxxflags_local)
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set(${cxxflags} ${cxxflags_local} PARENT_SCOPE)
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endfunction()
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# Assembler flags
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function(libomp_get_asmflags asmflags)
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set(asmflags_local)
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libomp_append(asmflags_local "-x assembler-with-cpp" LIBOMP_HAVE_X_ASSEMBLER_WITH_CPP_FLAG)
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# Architectural assembler flags
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if(${IA32})
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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libomp_append(asmflags_local -m32 LIBOMP_HAVE_M32_FLAG)
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endif()
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libomp_append(asmflags_local /safeseh LIBOMP_HAVE_SAFESEH_MASM_FLAG)
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libomp_append(asmflags_local /coff LIBOMP_HAVE_COFF_MASM_FLAG)
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elseif(${MIC})
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libomp_append(asmflags_local -mmic LIBOMP_HAVE_MMIC_FLAG)
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endif()
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set(asmflags_local ${asmflags_local} ${LIBOMP_ASMFLAGS})
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libomp_setup_flags(asmflags_local)
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set(${asmflags} ${asmflags_local} PARENT_SCOPE)
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endfunction()
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# Linker flags
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function(libomp_get_ldflags ldflags)
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set(ldflags_local)
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libomp_append(ldflags_local "${CMAKE_LINK_DEF_FILE_FLAG}${CMAKE_CURRENT_BINARY_DIR}/${LIBOMP_LIB_NAME}.def"
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IF_DEFINED CMAKE_LINK_DEF_FILE_FLAG)
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libomp_append(ldflags_local "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}${LIBOMP_VERSION_MAJOR}.${LIBOMP_VERSION_MINOR}"
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IF_DEFINED CMAKE_C_OSX_CURRENT_VERSION_FLAG)
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libomp_append(ldflags_local "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}${LIBOMP_VERSION_MAJOR}.${LIBOMP_VERSION_MINOR}"
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IF_DEFINED CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG)
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libomp_append(ldflags_local -Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG)
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libomp_append(ldflags_local "-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt" LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
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libomp_append(ldflags_local -static-libgcc LIBOMP_HAVE_STATIC_LIBGCC_FLAG)
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libomp_append(ldflags_local -Wl,-z,noexecstack LIBOMP_HAVE_Z_NOEXECSTACK_FLAG)
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libomp_append(ldflags_local -no-intel-extensions LIBOMP_HAVE_NO_INTEL_EXTENSIONS_FLAG)
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libomp_append(ldflags_local -static-intel LIBOMP_HAVE_STATIC_INTEL_FLAG)
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libomp_append(ldflags_local /SAFESEH LIBOMP_HAVE_SAFESEH_FLAG)
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# Architectural linker flags
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if(${IA32})
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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libomp_append(ldflags_local -m32 LIBOMP_HAVE_M32_FLAG)
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endif()
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libomp_append(ldflags_local -msse2 LIBOMP_HAVE_MSSE2_FLAG)
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elseif(${MIC})
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libomp_append(ldflags_local -mmic LIBOMP_HAVE_MMIC_FLAG)
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libomp_append(ldflags_local -Wl,-x LIBOMP_HAVE_X_FLAG)
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endif()
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set(ldflags_local ${ldflags_local} ${LIBOMP_LDFLAGS})
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libomp_setup_flags(ldflags_local)
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set(${ldflags} ${ldflags_local} PARENT_SCOPE)
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endfunction()
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# Library flags
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function(libomp_get_libflags libflags)
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set(libflags_local)
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libomp_append(libflags_local "${CMAKE_THREAD_LIBS_INIT}")
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libomp_append(libflags_local "${LIBOMP_HWLOC_LIBRARY}" LIBOMP_USE_HWLOC)
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if(${IA32})
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libomp_append(libflags_local -lirc_pic LIBOMP_HAVE_IRC_PIC_LIBRARY)
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endif()
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if(MINGW)
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libomp_append(libflags_local -lpsapi LIBOMP_HAVE_PSAPI)
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endif()
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if(LIBOMP_HAVE_SHM_OPEN_WITH_LRT)
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libomp_append(libflags_local -lrt)
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endif()
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if(${CMAKE_SYSTEM_NAME} MATCHES "DragonFly|FreeBSD")
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libomp_append(libflags_local "-Wl,--no-as-needed" LIBOMP_HAVE_AS_NEEDED_FLAG)
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libomp_append(libflags_local "-lm")
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libomp_append(libflags_local "-Wl,--as-needed" LIBOMP_HAVE_AS_NEEDED_FLAG)
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elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux|NetBSD")
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libomp_append(libflags_local -lm)
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endif()
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set(libflags_local ${libflags_local} ${LIBOMP_LIBFLAGS})
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libomp_setup_flags(libflags_local)
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libomp_string_to_list("${libflags_local}" libflags_local_list)
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set(${libflags} ${libflags_local_list} PARENT_SCOPE)
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endfunction()
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# Fortran flags
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function(libomp_get_fflags fflags)
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set(fflags_local)
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if(${IA32})
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libomp_append(fflags_local -m32 LIBOMP_HAVE_M32_FORTRAN_FLAG)
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endif()
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set(fflags_local ${fflags_local} ${LIBOMP_FFLAGS})
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libomp_setup_flags(fflags_local)
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set(${fflags} ${fflags_local} PARENT_SCOPE)
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endfunction()
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# Perl generate-defs.pl flags (For Windows only)
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function(libomp_get_gdflags gdflags)
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set(gdflags_local)
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if(${IA32})
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set(libomp_gdflag_arch arch_32)
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libomp_append(gdflags_local "-D IS_IA_ARCH")
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elseif(${INTEL64})
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set(libomp_gdflag_arch arch_32e)
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libomp_append(gdflags_local "-D IS_IA_ARCH")
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else()
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set(libomp_gdflag_arch arch_${LIBOMP_ARCH})
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endif()
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libomp_append(gdflags_local "-D ${libomp_gdflag_arch}")
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libomp_append(gdflags_local "-D msvc_compat")
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libomp_append(gdflags_local "-D norm" NORMAL_LIBRARY)
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libomp_append(gdflags_local "-D prof" PROFILE_LIBRARY)
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libomp_append(gdflags_local "-D stub" STUBS_LIBRARY)
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libomp_append(gdflags_local "-D HAVE_QUAD" LIBOMP_USE_QUAD_PRECISION)
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libomp_append(gdflags_local "-D USE_DEBUGGER" LIBOMP_USE_DEBUGGER)
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if(${DEBUG_BUILD} OR ${RELWITHDEBINFO_BUILD})
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libomp_append(gdflags_local "-D KMP_DEBUG")
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endif()
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set(${gdflags} ${gdflags_local} PARENT_SCOPE)
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endfunction()
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