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macro (add_flags_lnk FLAGS)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS_COVERAGE "${CMAKE_EXE_LINKER_FLAGS_COVERAGE} ${FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE "${CMAKE_SHARED_LINKER_FLAGS_COVERAGE} ${FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG} ${FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS_COVERAGE "${CMAKE_MODULE_LINKER_FLAGS_COVERAGE} ${FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "${CMAKE_MODULE_LINKER_FLAGS_RELEASE} ${FLAGS}")
endmacro()
macro(add_flags_cxx FLAGS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAGS}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAGS}")
endmacro()
macro(enable_profile)
# Declare the flags used for profiling builds:
if (MSVC)
set (CXX_PROFILING "/Zi")
set (LNK_PROFILING "/PROFILE /DEBUG")
else()
set (CXX_PROFILING "-pg")
set (LNK_PROFILING "-pg")
endif()
# Declare the profiling configurations:
SET(CMAKE_CXX_FLAGS_DEBUGPROFILE
"${CMAKE_CXX_FLAGS_DEBUG} ${CXX_PROFILING}"
CACHE STRING "Flags used by the C++ compiler during profile builds."
FORCE )
SET(CMAKE_C_FLAGS_DEBUGPROFILE
"${CMAKE_C_FLAGS_DEBUG} ${CXX_PROFILING}"
CACHE STRING "Flags used by the C compiler during profile builds."
FORCE )
SET(CMAKE_EXE_LINKER_FLAGS_DEBUGPROFILE
"${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${LNK_PROFILING}"
CACHE STRING "Flags used for linking binaries during profile builds."
FORCE )
SET(CMAKE_SHARED_LINKER_FLAGS_DEBUGPROFILE
"${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${LNK_PROFILING}"
CACHE STRING "Flags used by the shared libraries linker during profile builds."
FORCE )
MARK_AS_ADVANCED(
CMAKE_CXX_FLAGS_DEBUGPROFILE
CMAKE_C_FLAGS_DEBUGPROFILE
CMAKE_EXE_LINKER_FLAGS_DEBUGPROFILE
CMAKE_SHARED_LINKER_FLAGS_DEBUGPROFILE )
SET(CMAKE_CXX_FLAGS_RELEASEPROFILE
"${CMAKE_CXX_FLAGS_RELEASE} ${CXX_PROFILING}"
CACHE STRING "Flags used by the C++ compiler during profile builds."
FORCE )
SET(CMAKE_C_FLAGS_RELEASEPROFILE
"${CMAKE_C_FLAGS_RELEASE} ${CXX_PROFILING}"
CACHE STRING "Flags used by the C compiler during profile builds."
FORCE )
SET(CMAKE_EXE_LINKER_FLAGS_RELEASEPROFILE
"${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${LNK_PROFILING}"
CACHE STRING "Flags used for linking binaries during profile builds."
FORCE )
SET(CMAKE_SHARED_LINKER_FLAGS_RELEASEPROFILE
"${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${LNK_PROFILING}"
CACHE STRING "Flags used by the shared libraries linker during profile builds."
FORCE )
MARK_AS_ADVANCED(
CMAKE_CXX_FLAGS_RELEASEPROFILE
CMAKE_C_FLAGS_RELEASEPROFILE
CMAKE_EXE_LINKER_FLAGS_RELEASEPROFILE
CMAKE_SHARED_LINKER_FLAGS_RELEASEPROFILE )
# The configuration types need to be set after their respective c/cxx/linker flags and before the project directive
if(MSVC)
set(CMAKE_CONFIGURATION_TYPES "Debug;Release;DebugProfile;ReleaseProfile" CACHE STRING "" FORCE)
else()
set(CMAKE_CONFIGURATION_TYPES "Debug;Release;DebugProfile;ReleaseProfile;Coverage" CACHE STRING "" FORCE)
endif()
endmacro()
function(set_global_flags)
if(MSVC)
# Make build use multiple threads under MSVC:
add_compile_options(/MP)
# Make build use Unicode:
add_compile_definitions(UNICODE _UNICODE)
# Turn off CRT warnings:
add_compile_definitions(_CRT_SECURE_NO_WARNINGS)
return ()
endif()
# Allow for a forced 32-bit build under 64-bit OS:
if (FORCE_32)
add_compile_options(-m32)
add_link_options(-m32)
endif()
# https://en.wikipedia.org/wiki/Uname
# https://gcc.gnu.org/onlinedocs/gcc/index.html
# Have the compiler generate code specifically targeted at the current machine on Linux:
if(NOT NO_NATIVE_OPTIMIZATION AND NOT CMAKE_CROSSCOMPILING)
string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} SYSTEM_PROCESSOR)
if (SYSTEM_PROCESSOR MATCHES "^(i386|i686|x86|amd64|mips)")
message(STATUS "Optimising for this machine (march=native)")
add_compile_options(-march=native)
elseif (SYSTEM_PROCESSOR MATCHES "^(arm|aarch|powerpc|ppc|sparc|alpha)")
message(STATUS "Optimising for this machine (mcpu=native)")
add_compile_options(-mcpu=native)
endif()
endif()
endfunction()
function(set_exe_flags TARGET)
if (MSVC)
# TODO: Warnings as errors
target_compile_options(
${TARGET} PRIVATE
# Warnings level 4:
/W4
# Excessive amount of logspam (Unreferenced formal parameter), disable for now:
/wd4100
)
return ()
endif()
target_compile_options(
${TARGET} PRIVATE
# We use a signed char (fixes #640 on RasPi)
# TODO: specify this in code, not a compile flag:
-fsigned-char
# We support non-IEEE 754 FPUs so can make no guarantees about error:
-ffast-math
# All warnings:
-Wall -Wextra
# Excessive amount of logspam, disable for now:
-Wno-unused-parameter
)
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
target_compile_options(
${TARGET} PRIVATE
# Warnings-as-errors only on Clang for now:
-Werror
# TODO: actually fix the warnings instead of disabling them
# or at least disable on a file-level basis:
-Wno-missing-noreturn -Wno-padded -Wno-implicit-fallthrough
-Wno-double-promotion
# This is a pretty useless warning, we've already got -Wswitch which is what we need:
-Wno-switch-enum
# Weverything with Clang exceptions:
-Weverything -Wno-exit-time-destructors -Wno-error=disabled-macro-expansion
-Wno-weak-vtables -Wno-string-conversion -Wno-c++98-compat-pedantic -Wno-documentation
-Wno-documentation-unknown-command -Wno-reserved-id-macro -Wno-error=unused-command-line-argument
)
if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 7)
target_compile_options(
${TARGET} PRIVATE
# We aren't using C++11:
-Wno-return-std-move-in-c++11
)
endif()
if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
target_compile_options(
${TARGET} PRIVATE
# int to float conversions happen a lot, not worth fixing all warnings:
-Wno-implicit-int-float-conversion
)
endif()
endif()
endfunction()
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