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cmake_minimum_required(VERSION 3.5)
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
##################################################
# C++ standard version selection
##################################################
function(constexpr_if_std std_flag var)
try_compile(
worked
${CMAKE_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/cmake/constexpr_if.cpp
COMPILE_DEFINITIONS ${std_flag} -DCHECK_CONSTEXPR_IF=1
)
set(${var} ${worked} PARENT_SCOPE)
endfunction ()
function(try_std_flag std_flag)
try_compile(
std_supported
${CMAKE_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/cmake/constexpr_if.cpp
COMPILE_DEFINITIONS ${std_flag} -DCHECK_CONSTEXPR_IF=0
)
if (std_supported)
message("-- Checking compiler flag ${std_flag} -- success")
set(std_flag ${std_flag} PARENT_SCOPE)
constexpr_if_std(${std_flag} have_constexpr_if)
if (have_constexpr_if)
set(constexpr_if_define -DBOOST_NO_CONSTEXPR_IF=0 PARENT_SCOPE)
message("-- Checking constexpr if support -- success")
else ()
set(constexpr_if_define -DBOOST_NO_CONSTEXPR_IF=1 PARENT_SCOPE)
message("-- Checking constexpr if support -- failed to compile")
endif ()
else ()
message("-- Checking compiler flag ${std_flag} -- failed to compile")
endif ()
endfunction ()
try_std_flag(-std=c++17)
if (NOT std_flag)
try_std_flag(-std=c++1z)
elseif (NOT std_flag)
try_std_flag(-std=c++14)
elseif (NOT std_flag)
try_std_flag(/std:c++14)
elseif (NOT std_flag)
message(FATAL_ERROR "Only c++14 or later will work")
endif ()
##################################################
# Sanitizers
##################################################
set(USE_ASAN false CACHE BOOL "Set to true to enable -fsanitize=address when building tests.")
set(USE_UBSAN false CACHE BOOL "Set to true to enable -fsanitize=undefined when building tests.")
if (USE_ASAN AND USE_UBSAN)
message(FATAL_ERROR "USE_ASAN and USE_UBSAN must not be enabled at the same time")
elseif (USE_ASAN)
set(compile_flags -fsanitize=address)
set(link_flags -fsanitize=address)
message("-- Using -fsanitize=address")
elseif (USE_UBSAN)
set(compile_flags -fsanitize=undefined)
set(link_flags -fsanitize=undefined)
message("-- Using -fsanitize=undefined")
endif()
##################################################
# Code coverage
##################################################
if (UNIX)
set(BUILD_COVERAGE false CACHE BOOL "Set to true to enable code coverage when building tests. Only Linux and Mac are supported.")
if (BUILD_COVERAGE)
message("-- Building for code coverage; disabling any sanitizers")
if (APPLE)
set(compile_flags -fprofile-arcs -ftest-coverage)
set(CMAKE_BUILD_TYPE RelWithDebInfo)
set(link_flags --coverage)
else ()
set(compile_flags --coverage)
set(CMAKE_BUILD_TYPE RelWithDebInfo)
set(link_flags --coverage)
endif ()
endif ()
endif ()
##################################################
# Clang+Linux support
##################################################
set(clang_on_linux false)
if (CMAKE_CXX_COMPILER_ID STREQUAL Clang)
add_definitions(${std_flag} -stdlib=libc++ -g -Wall)
if (CMAKE_SYSTEM_NAME STREQUAL Linux)
set(clang_on_linux true)
endif ()
elseif (CMAKE_CXX_COMPILER_ID STREQUAL GNU)
add_definitions(${std_flag} -g -Wall)
endif ()
##################################################
# Dependencies
##################################################
include(dependencies)
##################################################
# yap library
##################################################
add_library(yap INTERFACE)
target_include_directories(yap INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include)
target_link_libraries(yap INTERFACE boost)
target_compile_definitions(yap INTERFACE ${constexpr_if_define} BOOST_ALL_NO_LIB=1)
if (link_flags)
target_link_libraries(yap INTERFACE ${link_flags})
target_compile_options(yap INTERFACE ${compile_flags})
endif ()
add_subdirectory(test)
add_subdirectory(example)
add_subdirectory(perf)
add_subdirectory(doc) # Doesn't build docs, just the snippets files.
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