From 186017f05ce6382e1505705b33b3635afb0ef691 Mon Sep 17 00:00:00 2001 From: Michael Uleysky Date: Tue, 6 Oct 2015 13:40:43 +1000 Subject: [PATCH] Check compiler options. --- CMakeLists.txt | 39 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index a7796fd..49fdd57 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -16,13 +16,48 @@ endif() project(gmt_makemap CXX) if(NOT CMAKE_BUILD_TYPE) - set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo" FORCE) + set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel" FORCE) endif() set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules/" CACHE INTERNAL "Location of our custom CMake modules." FORCE) include_directories(include) -set(default_options -std=gnu++11 -flto -fvisibility=hidden -Wl,--export-dynamic -Wall) + +# Checking compiler options +set(default_options -Wall) +include(CheckCXXCompilerFlag) +# C++11 is required +CHECK_CXX_COMPILER_FLAG(-std=c++11 COMPILER_SUPPORTS_CXX11) +CHECK_CXX_COMPILER_FLAG(-std=c++0x COMPILER_SUPPORTS_CXX0X) +if(COMPILER_SUPPORTS_CXX11) + set(default_options ${default_options} -std=c++11) +elseif(COMPILER_SUPPORTS_CXX0X) + set(default_options ${default_options} -std=c++0x) +else() + message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.") +endif() +# Link time optimization check +CHECK_CXX_COMPILER_FLAG(-flto COMPILER_SUPPORTS_FLTO) +if(COMPILER_SUPPORTS_FLTO AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug") + set(default_options ${default_options} -flto) +endif() +# -ipo flag check (Intel compiler link time optimization) +CHECK_CXX_COMPILER_FLAG(-ipo COMPILER_SUPPORTS_IPO) +if(COMPILER_SUPPORTS_IPO AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug") + set(default_options ${default_options} -ipo) +endif() +# Default hidden visibility check +CHECK_CXX_COMPILER_FLAG(-fvisibility=hidden COMPILER_SUPPORTS_HIDDEN) +if(COMPILER_SUPPORTS_HIDDEN) + set(default_options ${default_options} -fvisibility=hidden) +endif() +# Export dynamic. Required as modules mast call functions from main programm +CHECK_CXX_COMPILER_FLAG(-Wl,--export-dynamic COMPILER_SUPPORTS_EXPORTDYNAMIC) +if(COMPILER_SUPPORTS_EXPORTDYNAMIC) + set(default_options ${default_options} -Wl,--export-dynamic) +else() + message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no support of --export-dynamic. Please use a different C++ compiler.") +endif() add_compile_options(${default_options}) file(GLOB modules modules/*)