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Оптимизация работы с флагами

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This commit is contained in:
Andrei Astafev 2021-06-12 14:07:59 +03:00
parent 9ff6a41c5a
commit e4ec257b11
2 changed files with 146 additions and 87 deletions
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14
CMLibBuildTypes.cmake
View File

@ -1,5 +1,7 @@
cmake_policy(SET CMP0057 NEW) cmake_policy(SET CMP0057 NEW)
option(CMLIB_ENABLE_WARNING_FLAGS "Enable autodetected warning flags" ON)
# Добавление конфигурации для профилирования # Добавление конфигурации для профилирования
if(CMAKE_CONFIGURATION_TYPES) if(CMAKE_CONFIGURATION_TYPES)
if(NOT "Profile" IN_LIST CMAKE_CONFIGURATION_TYPES) if(NOT "Profile" IN_LIST CMAKE_CONFIGURATION_TYPES)
@ -35,7 +37,8 @@ if(CMAKE_BUILD_TYPE STREQUAL Profile)
CACHE STRING "" FORCE) CACHE STRING "" FORCE)
set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${_gcc_profile_flags}" set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${_gcc_profile_flags}"
CACHE STRING "" FORCE) CACHE STRING "" FORCE)
set(CMAKE_STATIC_LINKER_FLAGS_PROFILE "${CMAKE_STATIC_LINKER_FLAGS_RELEASE}" CACHE STRING "" FORCE) set(CMAKE_STATIC_LINKER_FLAGS_PROFILE "${CMAKE_STATIC_LINKER_FLAGS_RELEASE} ${_gcc_profile_flags}"
CACHE STRING "" FORCE)
set(CMAKE_MODULE_LINKER_FLAGS_PROFILE "${CMAKE_MODULE_LINKER_FLAGS_RELEASE} ${_gcc_profile_flags}" set(CMAKE_MODULE_LINKER_FLAGS_PROFILE "${CMAKE_MODULE_LINKER_FLAGS_RELEASE} ${_gcc_profile_flags}"
CACHE STRING "" FORCE) CACHE STRING "" FORCE)
elseif(CMAKE_CXX_COMPILER_IS_Intel) elseif(CMAKE_CXX_COMPILER_IS_Intel)
@ -53,12 +56,19 @@ elseif(CMAKE_BUILD_TYPE STREQUAL Debug)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${_gcc_debug_flags}" CACHE STRING "" FORCE) set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${_gcc_debug_flags}" CACHE STRING "" FORCE)
string(REPLACE " ${_gcc_debug_flags}" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") string(REPLACE " ${_gcc_debug_flags}" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${_gcc_debug_flags}" CACHE STRING "" FORCE) if(CMLIB_ENABLE_WARNING_FLAGS)
set(CMAKE_CXX_FLAGS_DEBUG
"${CMAKE_CXX_FLAGS_DEBUG} ${CMLIB_DETECTED_CXX_FLAGS_DEBUG} ${_gcc_debug_flags}" CACHE STRING ""
FORCE)
else()
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${_gcc_debug_flags}" CACHE STRING "" FORCE)
endif()
endif() endif()
set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "Enable generation of verbose build scripts." FORCE) set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "Enable generation of verbose build scripts." FORCE)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE BOOL "Enable generation of compile_commands.json." FORCE) set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE BOOL "Enable generation of compile_commands.json." FORCE)
set(DEBUG 1) set(DEBUG 1)
elseif(CMAKE_BUILD_TYPE STREQUAL Release) elseif(CMAKE_BUILD_TYPE STREQUAL Release)
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${CMLIB_DETECTED_CXX_FLAGS}" CACHE STRING "" FORCE)
set(RELEASE 1) set(RELEASE 1)
elseif(CMAKE_BUILD_TYPE STREQUAL None) elseif(CMAKE_BUILD_TYPE STREQUAL None)
# Режим None используется для статического анализа кода # Режим None используется для статического анализа кода

219
CMLibCompilerFlags.cmake
View File

@ -1,7 +1,5 @@
# based on https://github.com/bluescarni/yacma # based on https://github.com/bluescarni/yacma
option(CMLIB_WARNING_FLAGS "Enable warning flags" ON)
include(CheckCXXCompilerFlag) include(CheckCXXCompilerFlag)
macro(CHECK_ENABLE_CXX_FLAG flag) macro(CHECK_ENABLE_CXX_FLAG flag)
@ -10,8 +8,8 @@ macro(CHECK_ENABLE_CXX_FLAG flag)
unset(CMAKE_REQUIRED_QUIET) unset(CMAKE_REQUIRED_QUIET)
if(CHECK_CXX_FLAG) if(CHECK_CXX_FLAG)
message(STATUS "'${flag}': flag is enabled.") message(STATUS "'${flag}': flag is supported.")
add_compile_options("${flag}") string(CONCAT _CMLIB_DETECTED_CXX_FLAGS "${_CMLIB_DETECTED_CXX_FLAGS} ${flag}")
else() else()
message(STATUS "'${flag}': flag is NOT supported.") message(STATUS "'${flag}': flag is NOT supported.")
endif() endif()
@ -19,6 +17,21 @@ macro(CHECK_ENABLE_CXX_FLAG flag)
unset(CHECK_CXX_FLAG CACHE) unset(CHECK_CXX_FLAG CACHE)
endmacro() endmacro()
macro(CHECK_ENABLE_DEBUG_CXX_FLAG flag)
set(CMAKE_REQUIRED_QUIET TRUE)
check_cxx_compiler_flag("${flag}" CHECK_CXX_FLAG_DEBUG)
unset(CMAKE_REQUIRED_QUIET)
if(CHECK_CXX_FLAG_DEBUG)
message(STATUS "'${flag}': debug flag is supported.")
string(CONCAT _CMLIB_DETECTED_CXX_FLAGS_DEBUG "${_CMLIB_DETECTED_CXX_FLAGS_DEBUG} ${flag}")
else()
message(STATUS "'${flag}': debug flag is NOT supported.")
endif()
# NOTE: check_cxx_compiler stores variables in the cache.
unset(CHECK_CXX_FLAG_DEBUG CACHE)
endmacro()
function(cmlib_set_cxx_standard version) function(cmlib_set_cxx_standard version)
# Выбор стандарта по умолчанию (можно переопределить в проекте) # Выбор стандарта по умолчанию (можно переопределить в проекте)
set(CMAKE_CXX_STANDARD_REQUIRED YES PARENT_SCOPE) set(CMAKE_CXX_STANDARD_REQUIRED YES PARENT_SCOPE)
@ -61,106 +74,142 @@ function(cmlib_set_cxx_standard version)
endif() endif()
endfunction() endfunction()
# cmake-format: off if(NOT CMLIB_CXX_FLAGS_AUTODETECTION_DONE)
if(LSB_DISTRIBUTOR_ID STREQUAL "AstraLinuxSE" AND set(_CMLIB_DETECTED_CXX_FLAGS "")
LSB_CODENAME STREQUAL "smolensk" AND set(_CMLIB_DETECTED_CXX_FLAGS_DEBUG "")
LSB_RELEASE STREQUAL "1.5")
# cmake-format: on
cmlib_set_cxx_standard(11)
set(_CMAKE_TOOLCHAIN_PREFIX "x86_64-linux-gnu-" CACHE INTERNAL "" FORCE) # Configuration bits specific for clang.
set(_CMAKE_TOOLCHAIN_SUFFIX "-4.7" CACHE INTERNAL "" FORCE) if(CMAKE_CXX_COMPILER_IS_CLANG)
set(_CMAKE_TOOLCHAIN_LOCATION "/usr/bin" CACHE INTERNAL "" FORCE) # For now it seems like -Wshadow from clang behaves better than GCC's,
else() # just enable it here for the time being.
cmlib_set_cxx_standard(17) check_enable_debug_cxx_flag(-Wshadow)
# New warnings in clang 8.
# -Wshadow gives a lot of false positives with GCC 4.7.2 in Astra Linux 1.5 # NOTE: a few issues with macros here, let's disable for now.
if(CMAKE_CXX_COMPILER_IS_GCC) # CHECK_ENABLE_DEBUG_CXX_FLAG(-Wextra-semi-stmt)
check_enable_cxx_flag(-Wshadow) # New warnings in clang 10.
check_enable_debug_cxx_flag(-Wtautological-overlap-compare)
check_enable_debug_cxx_flag(-Wtautological-compare)
check_enable_debug_cxx_flag(-Wtautological-bitwise-compare)
check_enable_debug_cxx_flag(-Wbitwise-conditional-parentheses)
check_enable_debug_cxx_flag(-Wrange-loop-analysis)
check_enable_debug_cxx_flag(-Wmisleading-indentation)
check_enable_debug_cxx_flag(-Wc99-designator)
check_enable_debug_cxx_flag(-Wreorder-init-list)
check_enable_debug_cxx_flag(-Wsizeof-pointer-div)
check_enable_debug_cxx_flag(-Wsizeof-array-div)
check_enable_debug_cxx_flag(-Wxor-used-as-pow)
check_enable_debug_cxx_flag(-Wfinal-dtor-non-final-class)
endif() endif()
endif()
# Common configuration for GCC, clang and Intel. # Common configuration for GCC, clang and Intel.
if(CMAKE_CXX_COMPILER_IS_CLANG OR CMAKE_CXX_COMPILER_IS_INTEL OR CMAKE_CXX_COMPILER_IS_GCC) if(CMAKE_CXX_COMPILER_IS_CLANG OR CMAKE_CXX_COMPILER_IS_INTEL OR CMAKE_CXX_COMPILER_IS_GCC)
if(CMLIB_WARNING_FLAGS AND CMAKE_BUILD_TYPE STREQUAL "Debug") check_enable_debug_cxx_flag(-Wall)
check_enable_cxx_flag(-Wall) check_enable_debug_cxx_flag(-Wextra)
check_enable_cxx_flag(-Wextra) check_enable_debug_cxx_flag(-Wnon-virtual-dtor)
check_enable_cxx_flag(-Wnon-virtual-dtor) check_enable_debug_cxx_flag(-Wnoexcept)
check_enable_cxx_flag(-Wnoexcept) check_enable_debug_cxx_flag(-Wlogical-op)
check_enable_cxx_flag(-Wlogical-op) check_enable_debug_cxx_flag(-Wconversion)
check_enable_cxx_flag(-Wconversion) check_enable_debug_cxx_flag(-Wdeprecated)
check_enable_cxx_flag(-Wdeprecated)
# This limit is supposed to be at least 1024 in C++11, but for some reason # This limit is supposed to be at least 1024 in C++11, but for some reason
# clang sets this to 256, and gcc to 900. # clang sets this to 256, and gcc to 900.
check_enable_cxx_flag(-ftemplate-depth=1024) check_enable_cxx_flag(-ftemplate-depth=1024)
check_enable_cxx_flag(-Wold-style-cast) check_enable_debug_cxx_flag(-Wold-style-cast)
check_enable_cxx_flag(-Wdisabled-optimization) check_enable_debug_cxx_flag(-Wdisabled-optimization)
# This is useful when the compiler decides the template backtrace is too # This is useful when the compiler decides the template backtrace is too
# verbose. # verbose.
check_enable_cxx_flag(-ftemplate-backtrace-limit=0) check_enable_debug_cxx_flag(-ftemplate-backtrace-limit=0)
check_enable_cxx_flag(-fstack-protector-all) check_enable_debug_cxx_flag(-fstack-protector-all)
# A few suggestion flags. # A few suggestion flags.
check_enable_cxx_flag(-Wsuggest-attribute=pure) check_enable_debug_cxx_flag(-Wsuggest-attribute=pure)
check_enable_cxx_flag(-Wsuggest-attribute=const) check_enable_debug_cxx_flag(-Wsuggest-attribute=const)
check_enable_cxx_flag(-Wsuggest-attribute=noreturn) check_enable_debug_cxx_flag(-Wsuggest-attribute=noreturn)
check_enable_cxx_flag(-Wsuggest-attribute=format) check_enable_debug_cxx_flag(-Wsuggest-attribute=format)
# From GCC 5. # From GCC 5.
check_enable_cxx_flag(-Wodr) check_enable_debug_cxx_flag(-Wodr)
check_enable_cxx_flag(-Wsuggest-final-types) check_enable_debug_cxx_flag(-Wsuggest-final-types)
check_enable_cxx_flag(-Wsuggest-final-methods) check_enable_debug_cxx_flag(-Wsuggest-final-methods)
check_enable_cxx_flag(-Wsuggest-override) check_enable_debug_cxx_flag(-Wsuggest-override)
# From GCC 6. # From GCC 6.
check_enable_cxx_flag(-Wshift-negative-value) check_enable_debug_cxx_flag(-Wshift-negative-value)
check_enable_cxx_flag(-Wshift-overflow=2) check_enable_debug_cxx_flag(-Wshift-overflow=2)
check_enable_cxx_flag(-Wduplicated-cond) check_enable_debug_cxx_flag(-Wduplicated-cond)
check_enable_cxx_flag(-Wnull-dereference) check_enable_debug_cxx_flag(-Wnull-dereference)
# From GCC 7. # From GCC 7.
check_enable_cxx_flag(-Wrestrict) check_enable_debug_cxx_flag(-Wrestrict)
check_enable_cxx_flag(-Waligned-new) check_enable_debug_cxx_flag(-Waligned-new)
check_enable_debug_cxx_flag(-fdiagnostics-parseable-fixits)
check_enable_debug_cxx_flag(-fdiagnostics-generate-patch)
# From GCC 8. # From GCC 8.
check_enable_cxx_flag(-Wcast-align=strict) check_enable_debug_cxx_flag(-Wcast-align=strict)
# This is supposed to produce a nice graphical visualization of mismatching # This is supposed to produce a nice graphical visualization of mismatching
# template errors. # template errors.
check_enable_cxx_flag(-fdiagnostics-show-template-tree) check_enable_cxx_flag(-fdiagnostics-show-template-tree)
check_enable_cxx_flag(-fdiagnostics-show-option) check_enable_debug_cxx_flag(-fdiagnostics-show-option)
check_enable_cxx_flag(-pedantic) check_enable_debug_cxx_flag(-pedantic)
check_enable_cxx_flag(-Wcast-align) check_enable_debug_cxx_flag(-Wcast-align)
check_enable_cxx_flag(-Wcast-qual) check_enable_debug_cxx_flag(-Wcast-qual)
check_enable_cxx_flag(-Wctor-dtor-privacy) check_enable_debug_cxx_flag(-Wctor-dtor-privacy)
check_enable_cxx_flag(-Wdisabled-optimization) check_enable_debug_cxx_flag(-Wdisabled-optimization)
check_enable_cxx_flag(-Wformat=2) check_enable_debug_cxx_flag(-Wformat=2)
check_enable_cxx_flag(-Winit-self) check_enable_debug_cxx_flag(-Winit-self)
check_enable_cxx_flag(-Wmissing-include-dirs) check_enable_debug_cxx_flag(-Wmissing-include-dirs)
check_enable_cxx_flag(-Woverloaded-virtual) check_enable_debug_cxx_flag(-Woverloaded-virtual)
check_enable_cxx_flag(-Wredundant-decls) check_enable_debug_cxx_flag(-Wredundant-decls)
check_enable_cxx_flag(-Wsign-promo) check_enable_debug_cxx_flag(-Wsign-promo)
check_enable_cxx_flag(-Wstrict-overflow=5) check_enable_debug_cxx_flag(-Wstrict-overflow=5)
check_enable_cxx_flag(-Wundef) check_enable_debug_cxx_flag(-Wundef)
check_enable_cxx_flag(-Wno-unused) check_enable_debug_cxx_flag(-Wno-unused)
check_enable_cxx_flag(-Wno-variadic-macros) check_enable_debug_cxx_flag(-Wno-variadic-macros)
check_enable_cxx_flag(-Wno-parentheses) check_enable_debug_cxx_flag(-Wno-parentheses)
check_enable_cxx_flag(-Wstrict-null-sentinel) check_enable_debug_cxx_flag(-Wstrict-null-sentinel)
check_enable_cxx_flag(-Wshadow-all) check_enable_debug_cxx_flag(-Wshadow-all)
endif() endif()
endif()
if(CMAKE_CXX_COMPILER_IS_GCC) if(CMAKE_CXX_COMPILER_IS_GCC)
check_enable_cxx_flag(-fdiagnostics-color=auto) check_enable_cxx_flag(-fdiagnostics-color=auto)
# The -Wmaybe-uninitialized flag is enabled by -Wall, # The -Wmaybe-uninitialized flag is enabled by -Wall,
# but it is known to emit a lot of possibly spurious warnings. # but it is known to emit a lot of possibly spurious warnings.
# Let's just disable it. # Let's just disable it.
check_enable_cxx_flag(-Wno-maybe-uninitialized) check_enable_debug_cxx_flag(-Wno-maybe-uninitialized)
if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.999") # New in GCC 9.
# NOTE: GCC >= 6 seems to be wrongly warning about visibility attributes check_enable_debug_cxx_flag(-Waddress-of-packed-member)
# in some situations:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80947 if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.999")
# Let's just disable the warning for now. # NOTE: GCC >= 6 seems to be wrongly warning about visibility attributes
check_enable_cxx_flag(-Wno-attributes) # in some situations:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80947
# Let's just disable the warning for now.
check_enable_cxx_flag(-Wno-attributes)
endif()
endif() endif()
endif()
if(CMAKE_SYSTEM_PROCESSOR STREQUAL "e2k") # cmake-format: off
check_enable_cxx_flag(-Wno-invalid-offsetof) if(LSB_DISTRIBUTOR_ID STREQUAL "AstraLinuxSE" AND
list(APPEND CMAKE_LIBRARY_PATH "/usr/lib/e2k-linux-gnu") LSB_CODENAME STREQUAL "smolensk" AND
LSB_RELEASE STREQUAL "1.5")
# cmake-format: on
cmlib_set_cxx_standard(11)
set(_CMAKE_TOOLCHAIN_PREFIX "x86_64-linux-gnu-" CACHE INTERNAL "" FORCE)
set(_CMAKE_TOOLCHAIN_SUFFIX "-4.7" CACHE INTERNAL "" FORCE)
set(_CMAKE_TOOLCHAIN_LOCATION "/usr/bin" CACHE INTERNAL "" FORCE)
else()
cmlib_set_cxx_standard(17)
# -Wshadow gives a lot of false positives with GCC 4.7.2 in Astra Linux 1.5
if(CMAKE_CXX_COMPILER_IS_GCC)
check_enable_debug_cxx_flag(-Wshadow)
endif()
endif()
if(CMAKE_SYSTEM_PROCESSOR STREQUAL "e2k")
check_enable_debug_cxx_flag(-Wno-invalid-offsetof)
list(APPEND CMAKE_LIBRARY_PATH "/usr/lib/e2k-linux-gnu")
endif()
# Set the cache variables.
set(CMLIB_DETECTED_CXX_FLAGS "${_CMLIB_DETECTED_CXX_FLAGS}" CACHE INTERNAL "")
set(CMLIB_DETECTED_CXX_FLAGS_DEBUG "${_CMLIB_DETECTED_CXX_FLAGS_DEBUG}" CACHE INTERNAL "")
set(CMLIB_CXX_FLAGS_AUTODETECTION_DONE YES CACHE INTERNAL "")
endif() endif()