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llvm-project/openmp/cmake/HandleOpenMPOptions.cmake

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[OpenMP] Turn on -Wall compiler warnings by default Instead, maintain a list of disabled options to still build libomp and libomptarget without warnings. This includes -Wno-error and -Wno-pedantic to silence warnings that LLVM enables when building in-tree. I tested the following compilers: * Clang 6.0, 7.0, 8.0 * GCC 4.8.5 (CentOS 7), GCC 6, 7, 8, 9 * Intel Compiler 16, 17, 18, 19 RFC thread on openmp-dev mailing list: http://lists.llvm.org/pipermail/openmp-dev/2019-August/002668.html Differential Revision: https://reviews.llvm.org/D65867 llvm-svn: 368999
2019-08-15 21:11:50 +08:00
if (OPENMP_STANDALONE_BUILD)
[CMake] Refactor common settings and flags These are needed by both libraries, so we can do that in a common namespace and unify configuration parameters. Also make sure that the user isn't requesting libomptarget if the library cannot be built on the system. Issue an error in that case. Differential Revision: https://reviews.llvm.org/D40081 llvm-svn: 319342
2017-11-30 03:31:48 +08:00
# From HandleLLVMOptions.cmake
function(append_if condition value)
if (${condition})
foreach(variable ${ARGN})
set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
endforeach(variable)
endif()
endfunction()
endif()
[OpenMP] Turn on -Wall compiler warnings by default Instead, maintain a list of disabled options to still build libomp and libomptarget without warnings. This includes -Wno-error and -Wno-pedantic to silence warnings that LLVM enables when building in-tree. I tested the following compilers: * Clang 6.0, 7.0, 8.0 * GCC 4.8.5 (CentOS 7), GCC 6, 7, 8, 9 * Intel Compiler 16, 17, 18, 19 RFC thread on openmp-dev mailing list: http://lists.llvm.org/pipermail/openmp-dev/2019-August/002668.html Differential Revision: https://reviews.llvm.org/D65867 llvm-svn: 368999
2019-08-15 21:11:50 +08:00
# MSVC and clang-cl in compatibility mode map -Wall to -Weverything.
# TODO: LLVM adds /W4 instead, check if that works for the OpenMP runtimes.
if (NOT MSVC)
append_if(OPENMP_HAVE_WALL_FLAG "-Wall" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()
if (OPENMP_ENABLE_WERROR)
[CMake] Refactor common settings and flags These are needed by both libraries, so we can do that in a common namespace and unify configuration parameters. Also make sure that the user isn't requesting libomptarget if the library cannot be built on the system. Issue an error in that case. Differential Revision: https://reviews.llvm.org/D40081 llvm-svn: 319342
2017-11-30 03:31:48 +08:00
append_if(OPENMP_HAVE_WERROR_FLAG "-Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()
[OpenMP] Turn on -Wall compiler warnings by default Instead, maintain a list of disabled options to still build libomp and libomptarget without warnings. This includes -Wno-error and -Wno-pedantic to silence warnings that LLVM enables when building in-tree. I tested the following compilers: * Clang 6.0, 7.0, 8.0 * GCC 4.8.5 (CentOS 7), GCC 6, 7, 8, 9 * Intel Compiler 16, 17, 18, 19 RFC thread on openmp-dev mailing list: http://lists.llvm.org/pipermail/openmp-dev/2019-August/002668.html Differential Revision: https://reviews.llvm.org/D65867 llvm-svn: 368999
2019-08-15 21:11:50 +08:00
# Additional warnings that are not enabled by -Wall.
append_if(OPENMP_HAVE_WCAST_QUAL_FLAG "-Wcast-qual" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_WFORMAT_PEDANTIC_FLAG "-Wformat-pedantic" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
[OpenMP] Enable warning about "implicit fallthrough" Fix last warned location in ittnotify_static.cpp using the defined macro KMP_FALLTHROUGH(). Differential Revision: https://reviews.llvm.org/D65871 llvm-svn: 369003
2019-08-15 21:26:55 +08:00
append_if(OPENMP_HAVE_WIMPLICIT_FALLTHROUGH_FLAG "-Wimplicit-fallthrough" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
[OpenMP] Turn on -Wall compiler warnings by default Instead, maintain a list of disabled options to still build libomp and libomptarget without warnings. This includes -Wno-error and -Wno-pedantic to silence warnings that LLVM enables when building in-tree. I tested the following compilers: * Clang 6.0, 7.0, 8.0 * GCC 4.8.5 (CentOS 7), GCC 6, 7, 8, 9 * Intel Compiler 16, 17, 18, 19 RFC thread on openmp-dev mailing list: http://lists.llvm.org/pipermail/openmp-dev/2019-August/002668.html Differential Revision: https://reviews.llvm.org/D65867 llvm-svn: 368999
2019-08-15 21:11:50 +08:00
append_if(OPENMP_HAVE_WSIGN_COMPARE_FLAG "-Wsign-compare" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
# Warnings that we want to disable because they are too verbose or fragile.
append_if(OPENMP_HAVE_WNO_EXTRA_FLAG "-Wno-extra" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_WNO_PEDANTIC_FLAG "-Wno-pedantic" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_WNO_MAYBE_UNINITIALIZED_FLAG "-Wno-maybe-uninitialized" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
[cmake] Use -std=gnu++11 to fix alloca() on NetBSD Prefer using '-std=gnu++11' over '-std=c++11' when available, as NetBSD exposes the correct alloca() implementation only with gnu* C/C++ standards. Differential Revision: https://reviews.llvm.org/D55477 llvm-svn: 348854
2018-12-11 23:39:22 +08:00
append_if(OPENMP_HAVE_STD_GNUPP11_FLAG "-std=gnu++11" CMAKE_CXX_FLAGS)
if (NOT OPENMP_HAVE_STD_GNUPP11_FLAG)
append_if(OPENMP_HAVE_STD_CPP11_FLAG "-std=c++11" CMAKE_CXX_FLAGS)
endif()