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function(add_c_defines)
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS ${ARGN})
endfunction(add_c_defines)
if (APPLE)
add_c_defines(DARWIN=1 _DARWIN_C_SOURCE)
endif ()
## preprocessor definitions we want everywhere
add_c_defines(
_FILE_OFFSET_BITS=64
_LARGEFILE64_SOURCE
__STDC_FORMAT_MACROS
__STDC_LIMIT_MACROS
__LONG_LONG_SUPPORTED
)
if (NOT CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
## on FreeBSD these types of macros actually remove functionality
add_c_defines(
_SVID_SOURCE
_XOPEN_SOURCE=600
)
endif ()
## add TOKU_PTHREAD_DEBUG for debug builds
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG TOKU_PTHREAD_DEBUG=1)
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DRD TOKU_PTHREAD_DEBUG=1)
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DRD _FORTIFY_SOURCE=2)
## coverage
option(USE_GCOV "Use gcov for test coverage." OFF)
if (USE_GCOV)
if (NOT CMAKE_CXX_COMPILER_ID MATCHES GNU)
message(FATAL_ERROR "Must use the GNU compiler to compile for test coverage.")
endif ()
find_program(COVERAGE_COMMAND NAMES gcov47 gcov)
endif (USE_GCOV)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
## adds a compiler flag if the compiler supports it
macro(set_cflags_if_supported_named flag flagname)
check_c_compiler_flag("${flag}" HAVE_C_${flagname})
if (HAVE_C_${flagname})
set(CMAKE_C_FLAGS "${flag} ${CMAKE_C_FLAGS}")
endif ()
check_cxx_compiler_flag("${flag}" HAVE_CXX_${flagname})
if (HAVE_CXX_${flagname})
set(CMAKE_CXX_FLAGS "${flag} ${CMAKE_CXX_FLAGS}")
endif ()
endmacro(set_cflags_if_supported_named)
## adds a compiler flag if the compiler supports it
macro(set_cflags_if_supported)
foreach(flag ${ARGN})
check_c_compiler_flag(${flag} HAVE_C_${flag})
if (HAVE_C_${flag})
set(CMAKE_C_FLAGS "${flag} ${CMAKE_C_FLAGS}")
endif ()
check_cxx_compiler_flag(${flag} HAVE_CXX_${flag})
if (HAVE_CXX_${flag})
set(CMAKE_CXX_FLAGS "${flag} ${CMAKE_CXX_FLAGS}")
endif ()
endforeach(flag)
endmacro(set_cflags_if_supported)
## adds a linker flag if the compiler supports it
macro(set_ldflags_if_supported)
foreach(flag ${ARGN})
check_cxx_compiler_flag(${flag} HAVE_${flag})
if (HAVE_${flag})
set(CMAKE_EXE_LINKER_FLAGS "${flag} ${CMAKE_EXE_LINKER_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${flag} ${CMAKE_SHARED_LINKER_FLAGS}")
endif ()
endforeach(flag)
endmacro(set_ldflags_if_supported)
## disable some warnings
set_cflags_if_supported(
-Wno-missing-field-initializers
-Wstrict-null-sentinel
-Winit-self
-Wswitch
-Wtrampolines
-Wlogical-op
-Wmissing-format-attribute
-Wno-error=missing-format-attribute
-Wno-error=address-of-array-temporary
-Wno-error=tautological-constant-out-of-range-compare
-fno-rtti
-fno-exceptions
)
## set_cflags_if_supported_named("-Weffc++" -Weffcpp)
if (CMAKE_CXX_FLAGS MATCHES -fno-implicit-templates)
# must append this because mysql sets -fno-implicit-templates and we need to override it
check_cxx_compiler_flag(-fimplicit-templates HAVE_CXX_-fimplicit-templates)
if (HAVE_CXX_-fimplicit-templates)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fimplicit-templates")
endif ()
endif()
## Clang has stricter POD checks. So, only enable this warning on our other builds (Linux + GCC)
if (NOT CMAKE_CXX_COMPILER_ID MATCHES Clang)
set_cflags_if_supported(
-Wpacked
)
endif ()
## this hits with optimized builds somewhere in ftleaf_split, we don't
## know why but we don't think it's a big deal
set_cflags_if_supported(
-Wno-error=strict-overflow
)
set_ldflags_if_supported(
-Wno-error=strict-overflow
)
## set extra debugging flags and preprocessor definitions
set(CMAKE_C_FLAGS_DEBUG "-g3 -O0 ${CMAKE_C_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_DEBUG "-g3 -O0 ${CMAKE_CXX_FLAGS_DEBUG}")
## flags to use when we want to run DRD on the resulting binaries
## DRD needs debugging symbols.
## -O0 makes it too slow, and -O2 inlines too much for our suppressions to work. -O1 is just right.
set(CMAKE_C_FLAGS_DRD "-g3 -O1 ${CMAKE_C_FLAGS_DRD}")
set(CMAKE_CXX_FLAGS_DRD "-g3 -O1 ${CMAKE_CXX_FLAGS_DRD}")
## set extra release flags
## need to set flags for RelWithDebInfo as well because we want the MySQL/MariaDB builds to use them
if (CMAKE_CXX_COMPILER_ID STREQUAL Clang)
# have tried -flto and -O4, both make our statically linked executables break apple's linker
set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -g -O3 -UNDEBUG")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -g -O3 -UNDEBUG")
set(CMAKE_C_FLAGS_RELEASE "-g -O3 ${CMAKE_C_FLAGS_RELEASE} -UNDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE "-g -O3 ${CMAKE_CXX_FLAGS_RELEASE} -UNDEBUG")
else ()
# we overwrite this because the default passes -DNDEBUG and we don't want that
set(CMAKE_C_FLAGS_RELWITHDEBINFO "-flto -fuse-linker-plugin ${CMAKE_C_FLAGS_RELWITHDEBINFO} -g -O3 -UNDEBUG")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-flto -fuse-linker-plugin ${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -g -O3 -UNDEBUG")
set(CMAKE_C_FLAGS_RELEASE "-g -O3 -flto -fuse-linker-plugin ${CMAKE_C_FLAGS_RELEASE} -UNDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE "-g -O3 -flto -fuse-linker-plugin ${CMAKE_CXX_FLAGS_RELEASE} -UNDEBUG")
set(CMAKE_EXE_LINKER_FLAGS "-g -fuse-linker-plugin ${CMAKE_EXE_LINKER_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "-g -fuse-linker-plugin ${CMAKE_SHARED_LINKER_FLAGS}")
endif ()
## set warnings
set_cflags_if_supported(
-Wextra
-Wbad-function-cast
-Wno-missing-noreturn
-Wstrict-prototypes
-Wmissing-prototypes
-Wmissing-declarations
-Wpointer-arith
-Wmissing-format-attribute
-Wshadow
## other flags to try:
#-Wunsafe-loop-optimizations
#-Wpointer-arith
#-Wc++-compat
#-Wc++11-compat
#-Wwrite-strings
#-Wzero-as-null-pointer-constant
#-Wlogical-op
#-Wvector-optimization-performance
)
if (NOT CMAKE_CXX_COMPILER_ID STREQUAL Clang)
# Disabling -Wcast-align with clang. TODO: fix casting and re-enable it, someday.
set_cflags_if_supported(-Wcast-align)
endif ()
## always want these
set(CMAKE_C_FLAGS "-Wall -Werror ${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "-Wall -Werror ${CMAKE_CXX_FLAGS}")
## need to set -stdlib=libc++ to get real c++11 support on darwin
if (APPLE)
if (CMAKE_GENERATOR STREQUAL Xcode)
set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
else ()
add_definitions(-stdlib=libc++)
endif ()
endif ()
# pick language dialect
set(CMAKE_C_FLAGS "-std=c99 ${CMAKE_C_FLAGS}")
check_cxx_compiler_flag(-std=c++11 HAVE_STDCXX11)
check_cxx_compiler_flag(-std=c++0x HAVE_STDCXX0X)
if (HAVE_STDCXX11)
set(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
elseif (HAVE_STDCXX0X)
set(CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
else ()
message(FATAL_ERROR "${CMAKE_CXX_COMPILER} doesn't support -std=c++11 or -std=c++0x, you need one that does.")
endif ()
function(add_space_separated_property type obj propname val)
get_property(oldval ${type} ${obj} PROPERTY ${propname})
if (oldval MATCHES NOTFOUND)
set_property(${type} ${obj} PROPERTY ${propname} "${val}")
else ()
set_property(${type} ${obj} PROPERTY ${propname} "${val} ${oldval}")
endif ()
endfunction(add_space_separated_property)
## this function makes sure that the libraries passed to it get compiled
## with gcov-needed flags, we only add those flags to our libraries
## because we don't really care whether our tests get covered
function(maybe_add_gcov_to_libraries)
if (USE_GCOV)
foreach(lib ${ARGN})
add_space_separated_property(TARGET ${lib} COMPILE_FLAGS --coverage)
add_space_separated_property(TARGET ${lib} LINK_FLAGS --coverage)
target_link_libraries(${lib} gcov)
endforeach(lib)
endif (USE_GCOV)
endfunction(maybe_add_gcov_to_libraries)
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