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macro_name GCC
binary_name g++
lang_flags "-std=c++11 -D_REENTRANT"
# This should only contain flags which are included in GCC 4.8
warning_flags "-Wall -Wextra -Wpedantic -Wstrict-aliasing -Wcast-align -Wmissing-declarations -Wpointer-arith -Wcast-qual -Wzero-as-null-pointer-constant -Wnon-virtual-dtor"
# Boost headers have 0 as nullptr and non-virtual-dtor issues so we can't werror on them
werror_flags "-Werror -Wno-error=strict-overflow -Wno-error=zero-as-null-pointer-constant -Wno-error=non-virtual-dtor"
maintainer_warning_flags "-Wstrict-overflow=5 -Wold-style-cast -Wsuggest-override -Wshadow -Wextra-semi"
optimization_flags "-O3"
sanitizer_optimization_flags "-O1 -fno-optimize-sibling-calls -fno-omit-frame-pointer"
size_optimization_flags "-Os"
shared_flags "-fPIC"
coverage_flags "--coverage"
stack_protector_flags "-fstack-protector"
add_sysroot_option "--sysroot="
<sanitizers>
default -> iterator,address
iterator -> "-D_GLIBCXX_DEBUG"
address -> "-fsanitize=address"
undefined -> "-fsanitize=undefined -fno-sanitize-recover=undefined"
</sanitizers>
visibility_build_flags "-fvisibility=hidden"
visibility_attribute '__attribute__((visibility("default")))'
<so_link_commands>
# The default works for GNU ld and several other Unix linkers
default -> "$(CXX) -shared -fPIC -Wl,-soname,{soname_abi}"
# macOS, HP-UX, and Solaris linkers use different syntax
macos -> "$(CXX) -dynamiclib -fPIC -install_name $(INSTALLED_LIB_DIR)/{soname_abi}"
hpux -> "$(CXX) -shared -fPIC -Wl,+h,{soname_abi}"
solaris -> "$(CXX) -shared -fPIC -Wl,-h,{soname_abi}"
# AIX and OpenBSD don't use sonames at all
aix -> "$(CXX) -shared -fPIC"
openbsd -> "$(CXX) -shared -fPIC"
</so_link_commands>
<binary_link_commands>
default -> "$(LINKER)"
</binary_link_commands>
<isa_flags>
sse2 -> "-msse2"
ssse3 -> "-mssse3"
sse41 -> "-msse4.1"
sse42 -> "-msse4.2"
avx2 -> "-mavx2"
bmi2 -> "-mbmi -mbmi2"
aesni -> "-maes -mpclmul"
rdrand -> "-mrdrnd"
rdseed -> "-mrdseed"
sha -> "-msha"
altivec -> "-maltivec"
powercrypto -> "-mcrypto -mvsx"
ppc64:power9 -> "-mcpu=power9"
arm64:armv8crypto -> ""
arm64:armv8sm3 -> "-march=armv8.2-a+sm4"
arm64:armv8sm4 -> "-march=armv8.2-a+sm4"
arm64:armv8sha512 -> "-march=armv8.2-a+sha3"
arm64:armv8sha3 -> "-march=armv8.2-a+sha3"
# For Aarch32 -mfpu=neon is required
# For Aarch64 NEON is enabled by default
arm32:neon -> "-mfpu=neon"
arm64:neon -> ""
</isa_flags>
# Flags set here are included at compile and link time
<mach_abi_linking>
all!haiku,qnx,none -> "-pthread"
openmp -> "-fopenmp"
s390 -> "-m31"
s390x -> "-m64"
sparc32 -> "-m32 -mno-app-regs"
sparc64 -> "-m64 -mno-app-regs"
ppc64 -> "-m64"
x86_32 -> "-m32"
x86_64 -> "-m64"
x32 -> "-mx32"
qnx -> "-fexceptions"
cygwin -> "-U__STRICT_ANSI__"
</mach_abi_linking>