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SetupCxxFlags.cmake
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215 lines (192 loc) · 9.14 KB
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Check if the target architecture and compiler supports some special
# instruction sets that would boost performance.
include(CheckCXXCompilerFlag)
# x86/amd64 compiler flags
CHECK_CXX_COMPILER_FLAG("-msse3" CXX_SUPPORTS_SSE3)
# power compiler flags
CHECK_CXX_COMPILER_FLAG("-maltivec" CXX_SUPPORTS_ALTIVEC)
# compiler flags that are common across debug/release builds
if (MSVC)
# TODO(wesm): Change usages of C runtime functions that MSVC says are
# insecure, like std::getenv
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
# Use __declspec(dllexport) during library build, other users of the Arrow
# headers will see dllimport
add_definitions(-DARROW_EXPORTING)
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# clang-cl
set(CXX_COMMON_FLAGS "-EHsc")
elseif(${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 19)
message(FATAL_ERROR "Only MSVC 2015 (Version 19.0) and later are supported
by Arrow. Found version ${CMAKE_CXX_COMPILER_VERSION}.")
else()
# Fix annoying D9025 warning
string(REPLACE "/W3" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
# Set desired warning level (e.g. set /W4 for more warnings)
set(CXX_COMMON_FLAGS "/W3")
endif()
else()
# Common flags set below with warning level
set(CXX_COMMON_FLAGS "")
endif()
# Build warning level (CHECKIN, EVERYTHING, etc.)
# if no build warning level is specified, default to development warning level
if (NOT BUILD_WARNING_LEVEL)
set(BUILD_WARNING_LEVEL Production)
endif(NOT BUILD_WARNING_LEVEL)
string(TOUPPER ${BUILD_WARNING_LEVEL} UPPERCASE_BUILD_WARNING_LEVEL)
if ("${UPPERCASE_BUILD_WARNING_LEVEL}" STREQUAL "CHECKIN")
# Pre-checkin builds
if ("${COMPILER_FAMILY}" STREQUAL "msvc")
string(REPLACE "/W3" "" CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS}")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /W3")
# Treat all compiler warnings as errors
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /WX")
elseif ("${COMPILER_FAMILY}" STREQUAL "clang")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Weverything -Wno-c++98-compat \
-Wno-c++98-compat-pedantic -Wno-deprecated -Wno-weak-vtables -Wno-padded \
-Wno-comma -Wno-unused-parameter -Wno-undef \
-Wno-shadow -Wno-switch-enum -Wno-exit-time-destructors \
-Wno-global-constructors -Wno-weak-template-vtables -Wno-undefined-reinterpret-cast \
-Wno-implicit-fallthrough -Wno-unreachable-code-return \
-Wno-float-equal -Wno-missing-prototypes \
-Wno-old-style-cast -Wno-covered-switch-default \
-Wno-cast-align -Wno-vla-extension -Wno-shift-sign-overflow \
-Wno-used-but-marked-unused -Wno-missing-variable-declarations \
-Wno-gnu-zero-variadic-macro-arguments -Wconversion -Wno-sign-conversion \
-Wno-disabled-macro-expansion -Wno-shorten-64-to-32")
# Version numbers where warnings are introduced
if ("${COMPILER_VERSION}" VERSION_GREATER "3.3")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-gnu-folding-constant")
endif()
if ("${COMPILER_VERSION}" VERSION_GREATER "3.6")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-reserved-id-macro")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-range-loop-analysis")
endif()
if ("${COMPILER_VERSION}" VERSION_GREATER "3.7")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-double-promotion")
endif()
if ("${COMPILER_VERSION}" VERSION_GREATER "3.8")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-undefined-func-template")
endif()
# Treat all compiler warnings as errors
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-unknown-warning-option -Werror")
elseif ("${COMPILER_FAMILY}" STREQUAL "gcc")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall -Wconversion -Wno-sign-conversion")
# Treat all compiler warnings as errors
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-unknown-warning-option -Werror")
else()
message(FATAL_ERROR "Unknown compiler. Version info:\n${COMPILER_VERSION_FULL}")
endif()
elseif ("${UPPERCASE_BUILD_WARNING_LEVEL}" STREQUAL "EVERYTHING")
# Pedantic builds for fixing warnings
if ("${COMPILER_FAMILY}" STREQUAL "msvc")
string(REPLACE "/W3" "" CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS}")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /Wall")
# https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level
# /wdnnnn disables a warning where "nnnn" is a warning number
# Treat all compiler warnings as errors
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /WX")
elseif ("${COMPILER_FAMILY}" STREQUAL "clang")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic")
# Treat all compiler warnings as errors
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Werror")
elseif ("${COMPILER_FAMILY}" STREQUAL "gcc")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall -Wpedantic -Wextra -Wno-unused-parameter")
# Treat all compiler warnings as errors
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Werror")
else()
message(FATAL_ERROR "Unknown compiler. Version info:\n${COMPILER_VERSION_FULL}")
endif()
else()
# Production builds (warning are not treated as errors)
if ("${COMPILER_FAMILY}" STREQUAL "msvc")
# https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level
# TODO: Enable /Wall and disable individual warnings until build compiles without errors
# /wdnnnn disables a warning where "nnnn" is a warning number
string(REPLACE "/W3" "" CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS}")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /W3")
elseif ("${COMPILER_FAMILY}" STREQUAL "clang")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall")
elseif ("${COMPILER_FAMILY}" STREQUAL "gcc")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall")
else()
message(FATAL_ERROR "Unknown compiler. Version info:\n${COMPILER_VERSION_FULL}")
endif()
endif()
# if build warning flags is set, add to CXX_COMMON_FLAGS
if (BUILD_WARNING_FLAGS)
# Use BUILD_WARNING_FLAGS with BUILD_WARNING_LEVEL=everything to disable
# warnings (use with Clang's -Weverything flag to find potential errors)
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${BUILD_WARNING_FLAGS}")
endif(BUILD_WARNING_FLAGS)
if (NOT ("${COMPILER_FAMILY}" STREQUAL "msvc"))
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -std=c++11")
endif()
# Only enable additional instruction sets if they are supported
if (CXX_SUPPORTS_SSE3 AND ARROW_SSE3)
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -msse3")
endif()
if (CXX_SUPPORTS_ALTIVEC AND ARROW_ALTIVEC)
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -maltivec")
endif()
if (APPLE)
# Depending on the default OSX_DEPLOYMENT_TARGET (< 10.9), libstdc++ may be
# the default standard library which does not support C++11. libc++ is the
# default from 10.9 onward.
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -stdlib=libc++")
endif()
# compiler flags for different build types (run 'cmake -DCMAKE_BUILD_TYPE=<type> .')
# For all builds:
# For CMAKE_BUILD_TYPE=Debug
# -ggdb: Enable gdb debugging
# For CMAKE_BUILD_TYPE=FastDebug
# Same as DEBUG, except with some optimizations on.
# For CMAKE_BUILD_TYPE=Release
# -O3: Enable all compiler optimizations
# Debug symbols are stripped for reduced binary size. Add
# -DARROW_CXXFLAGS="-g" to add them
if (NOT MSVC)
set(CXX_FLAGS_DEBUG "-ggdb -O0")
set(CXX_FLAGS_FASTDEBUG "-ggdb -O1")
set(CXX_FLAGS_RELEASE "-O3 -DNDEBUG")
endif()
set(CXX_FLAGS_PROFILE_GEN "${CXX_FLAGS_RELEASE} -fprofile-generate")
set(CXX_FLAGS_PROFILE_BUILD "${CXX_FLAGS_RELEASE} -fprofile-use")
# if no build build type is specified, default to debug builds
if (NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Debug)
endif(NOT CMAKE_BUILD_TYPE)
string (TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE)
# Set compile flags based on the build type.
message("Configured for ${CMAKE_BUILD_TYPE} build (set with cmake -DCMAKE_BUILD_TYPE={release,debug,...})")
if ("${CMAKE_BUILD_TYPE}" STREQUAL "DEBUG")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_DEBUG}")
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "FASTDEBUG")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_FASTDEBUG}")
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_RELEASE}")
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "PROFILE_GEN")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_PROFILE_GEN}")
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "PROFILE_BUILD")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_PROFILE_BUILD}")
else()
message(FATAL_ERROR "Unknown build type: ${CMAKE_BUILD_TYPE}")
endif ()
message(STATUS "Build Type: ${CMAKE_BUILD_TYPE}")