From 4afd9a7a9e08d9e181f91086f2d9d7ae4eb8af0d Mon Sep 17 00:00:00 2001 From: selsta Date: Wed, 15 Sep 2021 08:28:24 +0200 Subject: cmake: set required C/C++ standard to 11 Co-authored-by: Jason Rhinelander --- CMakeLists.txt | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'CMakeLists.txt') diff --git a/CMakeLists.txt b/CMakeLists.txt index 1b9ba570d..0a14fce6e 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -92,6 +92,14 @@ endif() enable_language(C ASM) +# Require C11/C++11 and disable extensions for all targets +set(CMAKE_C_STANDARD 11) +set(CMAKE_C_STANDARD_REQUIRED ON) +set(CMAKE_C_EXTENSIONS OFF) +set(CMAKE_CXX_STANDARD 11) +set(CMAKE_CXX_STANDARD_REQUIRED ON) +set(CMAKE_CXX_EXTENSIONS OFF) + function (die msg) if (NOT WIN32) string(ASCII 27 Esc) @@ -571,7 +579,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "(SunOS|Solaris)") endif () if (APPLE AND NOT IOS) - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=default -std=c++11") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=default") if (NOT OPENSSL_ROOT_DIR) EXECUTE_PROCESS(COMMAND brew --prefix openssl OUTPUT_VARIABLE OPENSSL_ROOT_DIR @@ -619,8 +627,6 @@ if (NOT (MSVC OR ARCH)) set_default_arch() endif() -CHECK_C_COMPILER_FLAG(-std=c11 HAVE_C11) - option(COVERAGE "Enable profiling for test coverage report" OFF) if(COVERAGE) message(STATUS "Building with profiling for test coverage report") @@ -793,14 +799,14 @@ else() endif() set(C_WARNINGS "-Waggregate-return -Wnested-externs -Wold-style-definition -Wstrict-prototypes") set(CXX_WARNINGS "-Wno-reorder -Wno-missing-field-initializers") - try_compile(STATIC_ASSERT_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.c" COMPILE_DEFINITIONS "-std=c11") + try_compile(STATIC_ASSERT_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.c" CMAKE_FLAGS -DCMAKE_CXX_STANDARD=11) if(STATIC_ASSERT_RES) set(STATIC_ASSERT_FLAG "") else() set(STATIC_ASSERT_FLAG "-Dstatic_assert=_Static_assert") endif() - try_compile(STATIC_ASSERT_CPP_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.cpp" COMPILE_DEFINITIONS "-std=c++11") + try_compile(STATIC_ASSERT_CPP_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.cpp" CMAKE_FLAGS -DCMAKE_CXX_STANDARD=11) if(STATIC_ASSERT_CPP_RES) set(STATIC_ASSERT_CPP_FLAG "") else() @@ -896,8 +902,8 @@ else() message(STATUS "Using C++ security hardening flags: ${CXX_SECURITY_FLAGS}") message(STATUS "Using linker security hardening flags: ${LD_SECURITY_FLAGS}") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${PIC_FLAG} ${C_SECURITY_FLAGS}") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_CPP_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${PIC_FLAG} ${CXX_SECURITY_FLAGS}") + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${PIC_FLAG} ${C_SECURITY_FLAGS}") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_CPP_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${PIC_FLAG} ${CXX_SECURITY_FLAGS}") set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LD_SECURITY_FLAGS} ${LD_BACKCOMPAT_FLAGS}") # With GCC 6.1.1 the compiled binary malfunctions due to aliasing. Until that -- cgit v1.2.3