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glib/meson.build
Philip Withnall 7d55571c13 build: Explicitly enable -Wmissing-field-initializers 
It was previously only enabled (by default) on macOS, which led to
code being committed which triggered warnings, as that CI job is not
always run.

Avoid that risk by always enabling the warning.

The reasoning for using this warning is that explicit initialisation is
clearer than implicit. We also want to support GLib’s public headers
being used in projects which build with
`-Werror=missing-field-initializers`, but can’t easily enable the
warning for our public headers but not our internal code. So enable it
everywhere.

Make it a warning rather than an error, as there’s a risk that system
header changes will trigger it in distro release builds, which would
cause false build failures. By making it a warning, GLib developers can
build with `-Werror` and promote it to an error, while distros can
choose not to.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Helps: #2812
2022-11-21 10:49:03 +00:00

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project('glib', 'c',
version : '2.75.1',
# NOTE: See the policy in docs/meson-version.md before changing the Meson dependency
meson_version : '>= 0.60.0',
default_options : [
'buildtype=debugoptimized',
'warning_level=3',
'c_std=gnu99'
]
)
cc = meson.get_compiler('c')
have_cxx = add_languages('cpp', native: false, required: get_option('oss_fuzz').enabled())
if have_cxx
cxx = meson.get_compiler('cpp')
cxx_standards = {}
foreach std : ['98', '03', '11', '14', '17', '20', '2b', 'latest']
arg = (cxx.get_id() == 'msvc' ? '/std:' : '-std=') + 'c++' + std
if cxx.has_argument(arg)
cxx_standards += { std: arg }
endif
endforeach
endif
cc_can_run = meson.can_run_host_binaries()
if cc.get_argument_syntax() == 'msvc'
# Ignore several spurious warnings for things glib does very commonly
# (also for clang-cl)
add_project_arguments('/FImsvc_recommended_pragmas.h',language : 'c')
endif
if cc.get_id() == 'msvc'
# Set the input and exec encoding to utf-8, like is the default with GCC
add_project_arguments(cc.get_supported_arguments(['/utf-8']), language: 'c')
# Disable SAFESEH with MSVC for plugins and libs that use external deps that
# are built with MinGW
noseh_link_args = ['/SAFESEH:NO']
else
noseh_link_args = []
# -mms-bitfields vs -fnative-struct ?
endif
host_system = host_machine.system()
if host_system == 'darwin'
ios_test_code = '''#include <TargetConditionals.h>
#if ! TARGET_OS_IPHONE
#error "Not iOS/tvOS/watchOS/iPhoneSimulator"
#endif'''
if cc.compiles(ios_test_code, name : 'building for iOS')
host_system = 'ios'
endif
endif
glib_version = meson.project_version()
glib_api_version = '2.0'
version_arr = glib_version.split('.')
major_version = version_arr[0].to_int()
minor_version = version_arr[1].to_int()
micro_version = version_arr[2].to_int()
interface_age = minor_version.is_odd() ? 0 : micro_version
binary_age = 100 * minor_version + micro_version
soversion = 0
# Maintain compatibility with previous libtool versioning
# current = minor * 100 + micro
current = binary_age - interface_age
library_version = '@0@.@1@.@2@'.format(soversion, current, interface_age)
darwin_versions = [current + 1, '@0@.@1@'.format(current + 1, interface_age)]
configinc = include_directories('.')
glibinc = include_directories('glib')
gobjectinc = include_directories('gobject')
gmoduleinc = include_directories('gmodule')
gioinc = include_directories('gio')
glib_prefix = get_option('prefix')
glib_bindir = join_paths(glib_prefix, get_option('bindir'))
glib_libdir = join_paths(glib_prefix, get_option('libdir'))
glib_libexecdir = join_paths(glib_prefix, get_option('libexecdir'))
glib_datadir = join_paths(glib_prefix, get_option('datadir'))
glib_pkgdatadir = join_paths(glib_datadir, 'glib-2.0')
glib_includedir = join_paths(glib_prefix, get_option('includedir'), 'glib-2.0')
if get_option('gio_module_dir') != ''
glib_giomodulesdir = join_paths(glib_prefix, get_option('gio_module_dir'))
else
glib_giomodulesdir = join_paths(glib_libdir, 'gio', 'modules')
endif
if get_option('multiarch')
# For multiarch/multilib distributions, install each architecture's
# build of executables used in packaging triggers (like gio-querymodules)
# to an architecture-dependent location, with a compatibility symlink
# in the PATH.
multiarch_bindir = get_option('libdir') / 'glib-2.0'
multiarch_libexecdir = multiarch_bindir
pkgconfig_multiarch_bindir = '${libdir}/glib-2.0'
else
# For single-architecture distributions, just install them into the PATH
# as was traditionally done.
multiarch_bindir = get_option('bindir')
multiarch_libexecdir = get_option('libexecdir')
pkgconfig_multiarch_bindir = '${bindir}'
endif
glib_pkgconfigreldir = join_paths(glib_libdir, 'pkgconfig')
if get_option('charsetalias_dir') != ''
glib_charsetaliasdir = join_paths(glib_prefix, get_option('charsetalias_dir'))
else
glib_charsetaliasdir = glib_libdir
endif
glib_localstatedir = get_option('localstatedir')
if not glib_localstatedir.startswith('/')
# See https://mesonbuild.com/Builtin-options.html#directories
glib_localstatedir = join_paths(glib_prefix, glib_localstatedir)
endif
installed_tests_metadir = join_paths(glib_datadir, 'installed-tests', meson.project_name())
installed_tests_execdir = join_paths(glib_libexecdir, 'installed-tests', meson.project_name())
installed_tests_enabled = get_option('installed_tests')
installed_tests_template = files('tests/template.test.in')
installed_tests_template_tap = files('tests/template-tap.test.in')
# Don’t build the tests unless we can run them (either natively, in an exe wrapper, or by installing them for later use)
build_tests = get_option('tests') and (meson.can_run_host_binaries() or installed_tests_enabled)
common_test_env = [
'G_DEBUG=gc-friendly',
'G_ENABLE_DIAGNOSTIC=1',
'MALLOC_CHECK_=2',
]
test_timeout = 30
test_timeout_slow = 90
add_test_setup('default',
is_default: true,
exclude_suites: ['flaky', 'failing'],
env: common_test_env,
timeout_multiplier: 2,
)
add_test_setup('unstable_tests',
env: common_test_env,
timeout_multiplier: 2,
# Empty test setup, used for having different results set for flaky tests
# Sadly we can't use (https://github.com/mesonbuild/meson/issues/10934):
#suites: ['flaky', 'unstable']
)
# Allow the tests to be easily run under valgrind using --setup=valgrind
valgrind = find_program('valgrind', required: false)
if valgrind.found()
suppression_file = files('tools' / 'glib.supp')
add_test_setup('valgrind',
exclude_suites: [ 'no-valgrind', 'flaky' ],
exe_wrapper: [
valgrind,
'--tool=memcheck',
'--error-exitcode=1',
'--track-origins=yes',
'--leak-check=full',
'--leak-resolution=high',
'--num-callers=50',
'--show-leak-kinds=definite,possible',
'--show-error-list=yes',
'--suppressions=@0@'.format(meson.project_source_root() /
'@0@'.format(suppression_file[0])),
],
env: common_test_env,
timeout_multiplier: 20,
)
endif
add_project_arguments('-D_GNU_SOURCE', language: 'c')
if host_system == 'qnx'
add_project_arguments('-D_QNX_SOURCE', language: 'c')
endif
# Disable strict aliasing;
# see https://bugzilla.gnome.org/show_bug.cgi?id=791622
if cc.has_argument('-fno-strict-aliasing')
add_project_arguments('-fno-strict-aliasing', language: 'c')
endif
# dummy/empty dependency() object to declare fallbacks and simpler dependencies
not_found = dependency('', required: false)
########################
# Configuration begins #
########################
glib_conf = configuration_data()
glibconfig_conf = configuration_data()
# accumulated list of defines as we check for them, so we can easily
# use them later in test programs (autoconf does this automatically)
glib_conf_prefix = ''
glib_conf.set('GLIB_MAJOR_VERSION', major_version)
glib_conf.set('GLIB_MINOR_VERSION', minor_version)
glib_conf.set('GLIB_MICRO_VERSION', micro_version)
glib_conf.set('GLIB_INTERFACE_AGE', interface_age)
glib_conf.set('GLIB_BINARY_AGE', binary_age)
glib_conf.set_quoted('GETTEXT_PACKAGE', 'glib20')
glib_conf.set_quoted('PACKAGE_BUGREPORT', 'https://gitlab.gnome.org/GNOME/glib/issues/new')
glib_conf.set_quoted('PACKAGE_NAME', 'glib')
glib_conf.set_quoted('PACKAGE_STRING', 'glib @0@'.format(meson.project_version()))
glib_conf.set_quoted('PACKAGE_TARNAME', 'glib')
glib_conf.set_quoted('PACKAGE_URL', '')
glib_conf.set_quoted('PACKAGE_VERSION', meson.project_version())
glib_conf.set('ENABLE_NLS', 1)
# used by the .rc.in files
glibconfig_conf.set('LT_CURRENT_MINUS_AGE', soversion)
glib_conf.set('_GNU_SOURCE', 1)
if host_system in ['windows', 'darwin']
# Poll doesn't work on devices on Windows, and macOS's poll() implementation is known to be broken
glib_conf.set('BROKEN_POLL', true)
endif
if host_system == 'windows' and cc.get_id() != 'msvc' and cc.get_id() != 'clang-cl'
# FIXME: Ideally we shouldn't depend on this on Windows and should use
# 64 bit capable Windows API that also works with MSVC.
# The autotools build did set this for mingw and while meson sets it
# for gcc/clang by default, it doesn't do so on Windows.
glib_conf.set('_FILE_OFFSET_BITS', 64)
endif
glib_build_shared = false
glib_build_static = false
if get_option('default_library') == 'both'
glib_build_static = true
glib_build_shared = true
elif get_option('default_library') == 'static'
glib_build_static = true
elif get_option('default_library') == 'shared'
glib_build_shared = true
endif
glib_build_both = glib_build_static and glib_build_shared
glib_build_static_only = glib_build_static and not glib_build_shared
glib_build_shared_only = glib_build_shared and not glib_build_static
if glib_build_shared and glib_build_static and (
host_system == 'windows' or host_system == 'cygwin')
error('On Windows default_library must be "shared" or "static" but not "both"')
endif
if glib_build_static_only
glibconfig_conf.set('GLIB_STATIC_COMPILATION', '1')
glibconfig_conf.set('GOBJECT_STATIC_COMPILATION', '1')
glibconfig_conf.set('GIO_STATIC_COMPILATION', '1')
glibconfig_conf.set('GMODULE_STATIC_COMPILATION', '1')
glibconfig_conf.set('G_INTL_STATIC_COMPILATION', '1')
glibconfig_conf.set('FFI_STATIC_BUILD', '1')
endif
# Cygwin glib port maintainers made it clear
# (via the patches they apply) that they want no
# part of glib W32 code, therefore we do not define
# G_PLATFORM_WIN32 for host_system == 'cygwin'.
# This makes G_PLATFORM_WIN32 a synonym for
# G_OS_WIN32.
if host_system == 'windows'
glib_os = '''#define G_OS_WIN32
#define G_PLATFORM_WIN32'''
elif host_system == 'cygwin'
glib_os = '''#define G_OS_UNIX
#define G_WITH_CYGWIN'''
else
glib_os = '#define G_OS_UNIX'
endif
glibconfig_conf.set('glib_os', glib_os)
# We need to know the CRT being used to determine what .lib files we need on
# Visual Studio for dependencies that don't normally come with pkg-config files
vs_crt = 'release'
vs_crt_opt = get_option('b_vscrt')
if vs_crt_opt in ['mdd', 'mtd']
vs_crt = 'debug'
elif vs_crt_opt == 'from_buildtype'
if get_option('buildtype') == 'debug'
vs_crt = 'debug'
endif
endif
# Use debug/optimization flags to determine whether to enable debug or disable
# cast checks. We have a non-production (debug) build if debug is true and if
# optimization is 0 or g; otherwise, we have a production build.
glib_debug_cflags = []
glib_debug = get_option('glib_debug')
if (glib_debug.enabled() or (
glib_debug.auto() and get_option('debug') and get_option('optimization') in [ '0', 'g' ]))
glib_debug_cflags += ['-DG_ENABLE_DEBUG']
message('Enabling various debug infrastructure')
else
glib_debug_cflags += ['-DG_DISABLE_CAST_CHECKS']
message('Disabling cast checks')
endif
if not get_option('glib_assert')
glib_debug_cflags += ['-DG_DISABLE_ASSERT']
message('Disabling GLib asserts')
endif
if not get_option('glib_checks')
glib_debug_cflags += ['-DG_DISABLE_CHECKS']
message('Disabling GLib checks')
endif
add_project_arguments(glib_debug_cflags, language: 'c')
# check for header files
headers = [
'alloca.h',
'afunix.h',
'crt_externs.h',
'dirent.h', # MSC does not come with this by default
'float.h',
'fstab.h',
'grp.h',
'inttypes.h',
'limits.h',
'locale.h',
'mach/mach_time.h',
'memory.h',
'mntent.h',
'poll.h',
'pwd.h',
'sched.h',
'spawn.h',
'stdatomic.h',
'stdint.h',
'stdlib.h',
'string.h',
'strings.h',
'sys/auxv.h',
'sys/event.h',
'sys/filio.h',
'sys/inotify.h',
'sys/mkdev.h',
'sys/mntctl.h',
'sys/mnttab.h',
'sys/mount.h',
'sys/param.h',
'sys/resource.h',
'sys/select.h',
'sys/statfs.h',
'sys/stat.h',
'sys/statvfs.h',
'sys/sysctl.h',
'sys/time.h', # MSC does not come with this by default
'sys/times.h',
'sys/types.h',
'sys/uio.h',
'sys/vfs.h',
'sys/vfstab.h',
'sys/vmount.h',
'sys/wait.h',
'termios.h',
'unistd.h',
'values.h',
'wchar.h',
'xlocale.h',
]
foreach h : headers
if cc.has_header(h)
define = 'HAVE_' + h.underscorify().to_upper()
glib_conf.set(define, 1)
glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format(define)
endif
endforeach
# FreeBSD includes a malloc.h which always throws compilation error, so we have
# to use check_header() rather than has_header().
if cc.check_header('malloc.h')
glib_conf.set('HAVE_MALLOC_H', 1)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_MALLOC_H 1\n'
endif
if cc.has_header('linux/netlink.h')
glib_conf.set('HAVE_NETLINK', 1)
endif
# Is statx() supported? Android systems don’t reliably support it as of August 2020.
statx_code = '''
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <sys/stat.h>
#include <fcntl.h>
int main (void)
{
struct statx stat_buf;
return statx (AT_FDCWD, "/", AT_SYMLINK_NOFOLLOW, STATX_BASIC_STATS | STATX_BTIME, &stat_buf);
}
'''
if host_system != 'android' and cc.compiles(statx_code, name : 'statx() test')
glib_conf.set('HAVE_STATX', 1)
endif
if glib_conf.has('HAVE_LOCALE_H')
if cc.has_header_symbol('locale.h', 'LC_MESSAGES')
glib_conf.set('HAVE_LC_MESSAGES', 1)
endif
endif
struct_stat_blkprefix = '''
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
'''
struct_members = [
[ 'stat', 'st_mtimensec' ],
[ 'stat', 'st_mtim.tv_nsec' ],
[ 'stat', 'st_atimensec' ],
[ 'stat', 'st_atim.tv_nsec' ],
[ 'stat', 'st_ctimensec' ],
[ 'stat', 'st_ctim.tv_nsec' ],
[ 'stat', 'st_birthtime' ],
[ 'stat', 'st_birthtimensec' ],
[ 'stat', 'st_birthtim' ],
[ 'stat', 'st_birthtim.tv_nsec' ],
[ 'stat', 'st_blksize', struct_stat_blkprefix ],
[ 'stat', 'st_blocks', struct_stat_blkprefix ],
[ 'statfs', 'f_fstypename', struct_stat_blkprefix ],
[ 'statfs', 'f_bavail', struct_stat_blkprefix ],
[ 'dirent', 'd_type', '''#include <sys/types.h>
#include <dirent.h>''' ],
[ 'statvfs', 'f_basetype', '#include <sys/statvfs.h>' ],
[ 'statvfs', 'f_fstypename', '#include <sys/statvfs.h>' ],
[ 'tm', 'tm_gmtoff', '#include <time.h>' ],
[ 'tm', '__tm_gmtoff', '#include <time.h>' ],
]
foreach m : struct_members
header_check_prefix = glib_conf_prefix
if m.length() == 3
header_check_prefix = header_check_prefix + m[2]
else
header_check_prefix = header_check_prefix + '#include <sys/stat.h>'
endif
if cc.has_member('struct ' + m[0], m[1], prefix : header_check_prefix)
define = 'HAVE_STRUCT_@0@_@1@'.format(m[0].to_upper(), m[1].underscorify().to_upper())
glib_conf.set(define, 1)
glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format(define)
else
endif
endforeach
# Compiler flags
if cc.get_id() == 'gcc' or cc.get_id() == 'clang'
warning_common_args = [
'-Wduplicated-branches',
'-Wimplicit-fallthrough',
'-Wmisleading-indentation',
'-Wmissing-field-initializers',
'-Wnonnull',
'-Wunused',
# Due to maintained deprecated code, we do not want to see unused parameters
'-Wno-unused-parameter',
# Due to pervasive use of things like GPOINTER_TO_UINT(), we do not support
# building with -Wbad-function-cast.
'-Wno-cast-function-type',
# Due to function casts through (void*) we cannot support -Wpedantic:
# https://wiki.gnome.org/Projects/GLib/CompilerRequirements#Function_pointer_conversions.
'-Wno-pedantic',
# A zero-length format string shouldn't be considered an issue.
'-Wno-format-zero-length',
# We explicitly require variadic macros
'-Wno-variadic-macros',
'-Werror=format=2',
'-Werror=init-self',
'-Werror=missing-include-dirs',
'-Werror=pointer-arith',
'-Werror=unused-result',
]
warning_c_args = warning_common_args + [
'-Wstrict-prototypes',
# Due to pervasive use of things like GPOINTER_TO_UINT(), we do not support
# building with -Wbad-function-cast.
'-Wno-bad-function-cast',
'-Werror=implicit-function-declaration',
'-Werror=missing-prototypes',
'-Werror=pointer-sign',
'-Wno-string-plus-int',
]
warning_cxx_args = warning_common_args
warning_objc_args = warning_c_args
warning_c_link_args = [
'-Wl,-z,nodelete',
]
if get_option('bsymbolic_functions')
warning_c_link_args += ['-Wl,-Bsymbolic-functions']
endif
elif cc.get_id() == 'msvc'
warning_c_args = [
# If a warning is completely useless and spammy, use '/wdXXXX' to suppress it
# If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once
# NOTE: Only add warnings here if you are sure they're spurious
'/wo4057', # 'operator': 'identifier1' differs in indirection to slightly different base types from 'identifier2'
'/wd4068', # unknown pragma
'/wo4090', # 'operation': different 'modifier' qualifiers
'/wd4100', # 'identifier': unreferenced formal parameter
'/wd4116', # unnamed type definition in parentheses
'/wo4125', # decimal digit terminates octal escape sequence
'/wd4127', # conditional expression is constant
'/wd4146', # unary minus operator applied to unsigned type, result still unsigned
'/wd4152', # nonstandard extension, function/data pointer conversion in expression
'/wd4201', # nonstandard extension used: nameless struct/union
'/wd4232', # nonstandard extension used: 'identifier': address of dllimport 'dllimport' is not static, identity not guaranteed
'/wo4245', # 'conversion_type': conversion from 'type1' to 'type2', signed/unsigned mismatch
'/wo4267', # 'variable': conversion from 'size_t' to 'type', possible loss of data
'/wd4334', # 'shift_operator': result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
'/wo4389', # 'operator': signed/unsigned mismatch
'/wo4702', # unreachable code
'/wd4706', # assignment within conditional expression
]
warning_cxx_args = []
warning_objc_args = []
warning_c_link_args = []
else
warning_c_args = []
warning_cxx_args = []
warning_objc_args = []
warning_c_link_args = []
endif
add_project_arguments(cc.get_supported_arguments(warning_c_args), language: 'c')
if have_cxx
add_project_arguments(cxx.get_supported_arguments(warning_cxx_args), language: 'cpp')
endif
# FIXME: We cannot build some of the GResource tests with -z nodelete, which
# means we cannot use that flag in add_project_link_arguments(), and must add
# it to the relevant targets manually. We do the same with -Bsymbolic-functions
# because that is what the autotools build did.
# See https://github.com/mesonbuild/meson/pull/3520 for a way to eventually
# improve this.
glib_link_flags = cc.get_supported_link_arguments(warning_c_link_args)
# Windows SDK requirements and checks
if host_system == 'windows'
# Check whether we're building for UWP apps
code = '''
#include <windows.h>
#if !(WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
#error "Not building for UWP"
#endif'''
if cc.compiles(code, name : 'building for UWP')
glib_conf.set('G_WINAPI_ONLY_APP', true)
# We require Windows 10+ on WinRT
glib_conf.set('_WIN32_WINNT', '0x0A00')
uwp_gio_deps = [cc.find_library('shcore'),
cc.find_library('runtimeobject')]
else
# We require Windows 7+ on Win32
glib_conf.set('_WIN32_WINNT', '0x0601')
uwp_gio_deps = []
endif
endif
functions = [
'close_range',
'endmntent',
'endservent',
'epoll_create',
'fallocate',
'fchmod',
'fchown',
'fdwalk',
'fsync',
'getauxval',
'getc_unlocked',
'getfsstat',
'getgrgid_r',
'getmntent_r',
'getpwuid_r',
'getresuid',
'getvfsstat',
'gmtime_r',
'hasmntopt',
'inotify_init1',
'issetugid',
'kevent',
'kqueue',
'lchmod',
'lchown',
'link',
'localtime_r',
'lstat',
'mbrtowc',
'memalign',
'mmap',
'newlocale',
'pipe2',
'poll',
'prlimit',
'readlink',
'recvmmsg',
'sendmmsg',
'setenv',
'setmntent',
'strerror_r',
'strnlen',
'strsignal',
'strtod_l',
'strtoll_l',
'strtoull_l',
'symlink',
'timegm',
'unsetenv',
'uselocale',
'utimes',
'utimensat',
'valloc',
'vasprintf',
'vsnprintf',
'wcrtomb',
'wcslen',
'wcsnlen',
'sysctlbyname',
]
# _NSGetEnviron is available on iOS too, but its usage gets apps rejected from
# the app store since it's considered 'private API'
if host_system == 'darwin'
functions += ['_NSGetEnviron']
endif
if glib_conf.has('HAVE_SYS_STATVFS_H')
functions += ['statvfs']
else
have_func_statvfs = false
endif
if glib_conf.has('HAVE_SYS_STATFS_H') or glib_conf.has('HAVE_SYS_MOUNT_H')
functions += ['statfs']
else
have_func_statfs = false
endif
if host_system == 'windows'
iphlpapi_dep = cc.find_library('iphlpapi')
iphlpapi_funcs = ['if_nametoindex', 'if_indextoname']
foreach ifunc : iphlpapi_funcs
iphl_prefix = '''#define _WIN32_WINNT @0@
#include <winsock2.h>
#include <iphlpapi.h>'''.format(glib_conf.get('_WIN32_WINNT'))
if cc.has_function(ifunc,
prefix : iphl_prefix,
dependencies : iphlpapi_dep)
idefine = 'HAVE_' + ifunc.underscorify().to_upper()
glib_conf.set(idefine, 1)
glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format(idefine)
set_variable('have_func_' + ifunc, true)
else
set_variable('have_func_' + ifunc, false)
endif
endforeach
else
functions += ['if_indextoname', 'if_nametoindex']
endif
# AIX splice is something else
if host_system != 'aix'
functions += ['splice']
endif
foreach f : functions
if cc.has_function(f)
define = 'HAVE_' + f.underscorify().to_upper()
glib_conf.set(define, 1)
glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format(define)
set_variable('have_func_' + f, true)
else
set_variable('have_func_' + f, false)
endif
endforeach
# Check that stpcpy() is usable; must use header.
# See:
# https://github.com/mesonbuild/meson/issues/5628.
if cc.has_function('stpcpy', prefix : '#include <string.h>')
glib_conf.set('HAVE_STPCPY', 1)
endif
if cc.has_function('memalign', prefix: '#include <stdlib.h>\n#include <malloc.h>')
glib_conf.set('HAVE_MEMALIGN', 1)
endif
if cc.has_function('_aligned_malloc', prefix: '#include <malloc.h>')
glib_conf.set('HAVE__ALIGNED_MALLOC', 1)
endif
if host_system != 'windows' and cc.has_function('aligned_alloc', prefix: '#include <stdlib.h>')
glib_conf.set('HAVE_ALIGNED_ALLOC', 1)
endif
if host_system != 'windows' and cc.has_function('posix_memalign', prefix: '#include <stdlib.h>')
glib_conf.set('HAVE_POSIX_MEMALIGN', 1)
endif
# Check that posix_spawn() is usable; must use header
if cc.has_function('posix_spawn', prefix : '#include <spawn.h>')
glib_conf.set('HAVE_POSIX_SPAWN', 1)
endif
# Check whether strerror_r returns char *
if have_func_strerror_r
if cc.compiles('''#define _GNU_SOURCE
#include <string.h>
int func (void) {
char error_string[256];
char *ptr = strerror_r (-2, error_string, 256);
char c = *strerror_r (-2, error_string, 256);
return c != 0 && ptr != (void*) 0L;
}
''',
name : 'strerror_r() returns char *')
glib_conf.set('STRERROR_R_CHAR_P', 1,
description: 'Defined if strerror_r returns char *')
endif
endif
# Special-case these functions that have alternative names on Windows/MSVC
if cc.has_function('snprintf') or cc.has_header_symbol('stdio.h', 'snprintf')
glib_conf.set('HAVE_SNPRINTF', 1)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_SNPRINTF 1\n'
elif cc.has_function('_snprintf') or cc.has_header_symbol('stdio.h', '_snprintf')
hack_define = '1\n#define snprintf _snprintf'
glib_conf.set('HAVE_SNPRINTF', hack_define)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_SNPRINTF ' + hack_define
endif
if cc.has_function('strcasecmp', prefix: '#include <strings.h>')
glib_conf.set('HAVE_STRCASECMP', 1)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_STRCASECMP 1\n'
elif cc.has_function('_stricmp')
hack_define = '1\n#define strcasecmp _stricmp'
glib_conf.set('HAVE_STRCASECMP', hack_define)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_STRCASECMP ' + hack_define
endif
if cc.has_function('strncasecmp', prefix: '#include <strings.h>')
glib_conf.set('HAVE_STRNCASECMP', 1)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_STRNCASECMP 1\n'
elif cc.has_function('_strnicmp')
hack_define = '1\n#define strncasecmp _strnicmp'
glib_conf.set('HAVE_STRNCASECMP', hack_define)
glib_conf_prefix = glib_conf_prefix + '#define HAVE_STRNCASECMP ' + hack_define
endif
if cc.has_header_symbol('sys/sysmacros.h', 'major')
glib_conf.set('MAJOR_IN_SYSMACROS', 1)
elif cc.has_header_symbol('sys/mkdev.h', 'major')
glib_conf.set('MAJOR_IN_MKDEV', 1)
elif cc.has_header_symbol('sys/types.h', 'major')
glib_conf.set('MAJOR_IN_TYPES', 1)
endif
if cc.has_header_symbol('dlfcn.h', 'RTLD_LAZY')
glib_conf.set('HAVE_RTLD_LAZY', 1)
endif
if cc.has_header_symbol('dlfcn.h', 'RTLD_NOW')
glib_conf.set('HAVE_RTLD_NOW', 1)
endif
if cc.has_header_symbol('dlfcn.h', 'RTLD_GLOBAL')
glib_conf.set('HAVE_RTLD_GLOBAL', 1)
endif
have_rtld_next = false
if cc.has_header_symbol('dlfcn.h', 'RTLD_NEXT', args: '-D_GNU_SOURCE')
have_rtld_next = true
glib_conf.set('HAVE_RTLD_NEXT', 1)
endif
# Check whether to use statfs or statvfs
# Some systems have both statfs and statvfs, pick the most "native" for these
if have_func_statfs and have_func_statvfs
# on solaris and irix, statfs doesn't even have the f_bavail field
if not glib_conf.has('HAVE_STRUCT_STATFS_F_BAVAIL')
have_func_statfs = false
else
# at least on linux, statfs is the actual syscall
have_func_statvfs = false
endif
endif
if have_func_statfs
glib_conf.set('USE_STATFS', 1)
stat_func_to_use = 'statfs'
elif have_func_statvfs
glib_conf.set('USE_STATVFS', 1)
stat_func_to_use = 'statvfs'
else
stat_func_to_use = 'neither'
endif
message('Checking whether to use statfs or statvfs .. ' + stat_func_to_use)
if host_system == 'linux'
if cc.has_function('mkostemp',
prefix: '''#define _GNU_SOURCE
#include <stdlib.h>''')
glib_conf.set('HAVE_MKOSTEMP', 1)
endif
endif
glib_have_os_x_9_or_later = false
glib_have_carbon = false
glib_have_cocoa = false
if host_system == 'darwin'
add_languages('objc', native: false, required: true)
objcc = meson.get_compiler('objc')
add_project_arguments(objcc.get_supported_arguments(warning_objc_args), language: 'objc')
# Mac OS X Carbon support
glib_have_carbon = objcc.compiles('''#include <Carbon/Carbon.h>
#include <CoreServices/CoreServices.h>''',
name : 'Mac OS X Carbon support')
if glib_have_carbon
glib_conf.set('HAVE_CARBON', true)
glib_have_os_x_9_or_later = objcc.compiles('''#include <AvailabilityMacros.h>
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1090
#error Compiling for minimum OS X version before 10.9
#endif''',
name : 'OS X 9 or later')
endif
# Mac OS X Cocoa support
glib_have_cocoa = objcc.compiles('''#include <Cocoa/Cocoa.h>
#ifdef GNUSTEP_BASE_VERSION
#error "Detected GNUstep, not Cocoa"
#endif''',
name : 'Mac OS X Cocoa support')
if glib_have_cocoa
glib_conf.set('HAVE_COCOA', true)
endif
endif
if host_system == 'qnx'
glib_conf.set('HAVE_QNX', 1)
endif
# Check for futex(2)
if cc.links('''#include <linux/futex.h>
#include <sys/syscall.h>
#include <unistd.h>
int main (int argc, char ** argv) {
syscall (__NR_futex, NULL, FUTEX_WAKE, FUTEX_WAIT);
return 0;
}''', name : 'futex(2) system call')
glib_conf.set('HAVE_FUTEX', 1)
endif
# Check for eventfd(2)
if cc.links('''#include <sys/eventfd.h>
#include <unistd.h>
int main (int argc, char ** argv) {
eventfd (0, EFD_CLOEXEC);
return 0;
}''', name : 'eventfd(2) system call')
glib_conf.set('HAVE_EVENTFD', 1)
endif
# Check for pidfd_open(2)
if cc.links('''#include <sys/syscall.h>
#include <sys/wait.h>
#include <linux/wait.h>
#include <unistd.h>
int main (int argc, char ** argv) {
siginfo_t child_info = { 0, };
syscall (SYS_pidfd_open, 0, 0);
waitid (P_PIDFD, 0, &child_info, WEXITED | WNOHANG);
return 0;
}''', name : 'pidfd_open(2) system call')
glib_conf.set('HAVE_PIDFD', 1)
endif
# Check for __uint128_t (gcc) by checking for 128-bit division
uint128_t_src = '''int main() {
static __uint128_t v1 = 100;
static __uint128_t v2 = 10;
static __uint128_t u;
u = v1 / v2;
}'''
if cc.compiles(uint128_t_src, name : '__uint128_t available')
glib_conf.set('HAVE_UINT128_T', 1)
endif
clock_gettime_test_code = '''
#include <time.h>
struct timespec t;
int main (int argc, char ** argv) {
return clock_gettime(CLOCK_REALTIME, &t);
}'''
librt = []
if cc.links(clock_gettime_test_code, name : 'clock_gettime')
glib_conf.set('HAVE_CLOCK_GETTIME', 1)
elif cc.links(clock_gettime_test_code, args : '-lrt', name : 'clock_gettime in librt')
glib_conf.set('HAVE_CLOCK_GETTIME', 1)
librt = cc.find_library('rt')
endif
dlopen_dlsym_test_code = '''
#include <dlfcn.h>
#include <stdio.h>
int r;
int glib_underscore_test (void) { return 42; }
int main (int argc, char ** argv) {
void *f1 = (void*)0, *f2 = (void*)0, *handle;
handle = dlopen ((void*)0, 0);
if (handle) {
f1 = dlsym (handle, "glib_underscore_test");
f2 = dlsym (handle, "_glib_underscore_test");
}
r = (!f2 || f1) ? puts ("1") : puts ("0");
return r > 0 ? 0 : r;
}'''
libdl_dep = []
if cc.links(dlopen_dlsym_test_code, name : 'dlopen() and dlsym() in system libraries')
have_dlopen_dlsym = true
elif cc.links(dlopen_dlsym_test_code, args : '-ldl', name : 'dlopen() and dlsym() in libdl')
have_dlopen_dlsym = true
libdl_dep = cc.find_library('dl')
else
have_dlopen_dlsym = false
endif
# if statfs() takes 2 arguments (Posix) or 4 (Solaris)
if have_func_statfs
if cc.compiles(glib_conf_prefix + '''
#include <unistd.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
void some_func (void) {
struct statfs st;
statfs("/", &st);
}''', name : 'number of arguments to statfs() (n=2)')
glib_conf.set('STATFS_ARGS', 2)
elif cc.compiles(glib_conf_prefix + '''
#include <unistd.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
void some_func (void) {
struct statfs st;
statfs("/", &st, sizeof (st), 0);
}''', name : 'number of arguments to statfs() (n=4)')
glib_conf.set('STATFS_ARGS', 4)
else
error('Unable to determine number of arguments to statfs()')
endif
endif
# open takes O_DIRECTORY as an option
#AC_MSG_CHECKING([])
if cc.compiles('''#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
void some_func (void) {
open(0, O_DIRECTORY, 0);
}''', name : 'open() option O_DIRECTORY')
glib_conf.set('HAVE_OPEN_O_DIRECTORY', 1)
endif
# fcntl takes F_FULLFSYNC as an option
# See https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fsync.2.html
if cc.compiles('''#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
void some_func (void) {
fcntl(0, F_FULLFSYNC, 0);
}''', name : 'fcntl() option F_FULLFSYNC')
glib_conf.set('HAVE_FCNTL_F_FULLFSYNC', 1)
endif
# Check whether there is a vsnprintf() function with C99 semantics installed.
# (similar tests to AC_FUNC_VSNPRINTF_C99)
# Check whether there is a snprintf() function with C99 semantics installed.
# (similar tests to AC_FUNC_SNPRINTF_C99)
# Check whether there is a printf() function with Unix98 semantics installed.
# (similar tests to AC_FUNC_PRINTF_UNIX98)
have_good_vsnprintf = false
have_good_snprintf = false
have_good_printf = false
if host_system == 'windows' and (cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl')
# Unfortunately the Visual Studio 2015+ implementations of C99-style
# snprintf and vsnprintf don't seem to be quite good enough.
# (Sorry, I don't know exactly what is the problem,
# but it is related to floating point formatting and decimal point vs. comma.)
# The simple tests in AC_FUNC_VSNPRINTF_C99 and AC_FUNC_SNPRINTF_C99 aren't
# rigorous enough to notice, though.
glib_conf.set('HAVE_C99_SNPRINTF', false)
glib_conf.set('HAVE_C99_VSNPRINTF', false)
glib_conf.set('HAVE_UNIX98_PRINTF', false)
elif not cc_can_run and host_system in ['ios', 'darwin']
# All these are true when compiling natively on macOS, so we should use good
# defaults when building for iOS and tvOS.
glib_conf.set('HAVE_C99_SNPRINTF', true)
glib_conf.set('HAVE_C99_VSNPRINTF', true)
glib_conf.set('HAVE_UNIX98_PRINTF', true)
have_good_vsnprintf = true
have_good_snprintf = true
have_good_printf = true
else
vsnprintf_c99_test_code = '''
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
int
doit(char * s, ...)
{
char buffer[32];
va_list args;
int r;
va_start(args, s);
r = vsnprintf(buffer, 5, s, args);
va_end(args);
if (r != 7)
exit(1);
/* AIX 5.1 and Solaris seems to have a half-baked vsnprintf()
implementation. The above will return 7 but if you replace
the size of the buffer with 0, it borks! */
va_start(args, s);
r = vsnprintf(buffer, 0, s, args);
va_end(args);
if (r != 7)
exit(1);
exit(0);
}
int
main(void)
{
doit("1234567");
exit(1);
}'''
if cc_can_run
rres = cc.run(vsnprintf_c99_test_code, name : 'C99 vsnprintf')
if rres.compiled() and rres.returncode() == 0
glib_conf.set('HAVE_C99_VSNPRINTF', 1)
have_good_vsnprintf = true
endif
else
have_good_vsnprintf = meson.get_external_property('have_c99_vsnprintf', false)
glib_conf.set('HAVE_C99_VSNPRINTF', have_good_vsnprintf)
endif
snprintf_c99_test_code = '''
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
int
doit()
{
char buffer[32];
va_list args;
int r;
r = snprintf(buffer, 5, "1234567");
if (r != 7)
exit(1);
r = snprintf(buffer, 0, "1234567");
if (r != 7)
exit(1);
r = snprintf(NULL, 0, "1234567");
if (r != 7)
exit(1);
exit(0);
}
int
main(void)
{
doit();
exit(1);
}'''
if cc_can_run
rres = cc.run(snprintf_c99_test_code, name : 'C99 snprintf')
if rres.compiled() and rres.returncode() == 0
glib_conf.set('HAVE_C99_SNPRINTF', 1)
have_good_snprintf = true
endif
else
have_good_snprintf = meson.get_external_property('have_c99_snprintf', false)
glib_conf.set('HAVE_C99_SNPRINTF', have_good_snprintf)
endif
printf_unix98_test_code = '''
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main (void)
{
char buffer[128];
sprintf (buffer, "%2\$d %3\$d %1\$d", 1, 2, 3);
if (strcmp ("2 3 1", buffer) == 0)
exit (0);
exit (1);
}'''
if cc_can_run
rres = cc.run(printf_unix98_test_code, name : 'Unix98 printf positional parameters')
if rres.compiled() and rres.returncode() == 0
glib_conf.set('HAVE_UNIX98_PRINTF', 1)
have_good_printf = true
endif
else
have_good_printf = meson.get_external_property('have_unix98_printf', false)
glib_conf.set('HAVE_UNIX98_PRINTF', have_good_printf)
endif
endif
if host_system == 'windows'
glib_conf.set_quoted('EXEEXT', '.exe')
else
glib_conf.set('EXEEXT', '')
endif
# Our printf is 'good' only if vsnpintf()/snprintf()/printf() supports C99 well enough
use_system_printf = have_good_vsnprintf and have_good_snprintf and have_good_printf
glib_conf.set('USE_SYSTEM_PRINTF', use_system_printf)
glibconfig_conf.set('GLIB_USING_SYSTEM_PRINTF', use_system_printf)
if not use_system_printf
# gnulib has vasprintf so override the previous check
glib_conf.set('HAVE_VASPRINTF', 1)
endif
# Check for nl_langinfo and CODESET
if cc.links('''#include <langinfo.h>
int main (int argc, char ** argv) {
char *codeset = nl_langinfo (CODESET);
return 0;
}''', name : 'nl_langinfo and CODESET')
glib_conf.set('HAVE_LANGINFO_CODESET', 1)
glib_conf.set('HAVE_CODESET', 1)
endif
# Check for nl_langinfo and LC_TIME parts that are needed in gdatetime.c
if cc.links('''#include <langinfo.h>
int main (int argc, char ** argv) {
char *str;
str = nl_langinfo (PM_STR);
str = nl_langinfo (D_T_FMT);
str = nl_langinfo (D_FMT);
str = nl_langinfo (T_FMT);
str = nl_langinfo (T_FMT_AMPM);
str = nl_langinfo (MON_1);
str = nl_langinfo (ABMON_12);
str = nl_langinfo (DAY_1);
str = nl_langinfo (ABDAY_7);
return 0;
}''', name : 'nl_langinfo (PM_STR)')
glib_conf.set('HAVE_LANGINFO_TIME', 1)
endif
if cc.links('''#include <langinfo.h>
int main (int argc, char ** argv) {
char *str;
str = nl_langinfo (_NL_CTYPE_OUTDIGIT0_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT1_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT2_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT3_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT4_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT5_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT6_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT7_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT8_MB);
str = nl_langinfo (_NL_CTYPE_OUTDIGIT9_MB);
return 0;
}''', name : 'nl_langinfo (_NL_CTYPE_OUTDIGITn_MB)')
glib_conf.set('HAVE_LANGINFO_OUTDIGIT', 1)
endif
# Check for nl_langinfo and alternative month names
if cc.links('''#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <langinfo.h>
int main (int argc, char ** argv) {
char *str;
str = nl_langinfo (ALTMON_1);
str = nl_langinfo (ALTMON_2);
str = nl_langinfo (ALTMON_3);
str = nl_langinfo (ALTMON_4);
str = nl_langinfo (ALTMON_5);
str = nl_langinfo (ALTMON_6);
str = nl_langinfo (ALTMON_7);
str = nl_langinfo (ALTMON_8);
str = nl_langinfo (ALTMON_9);
str = nl_langinfo (ALTMON_10);
str = nl_langinfo (ALTMON_11);
str = nl_langinfo (ALTMON_12);
return 0;
}''', name : 'nl_langinfo (ALTMON_n)')
glib_conf.set('HAVE_LANGINFO_ALTMON', 1)
endif
# Check for nl_langinfo and abbreviated alternative month names
if cc.links('''#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <langinfo.h>
int main (int argc, char ** argv) {
char *str;
str = nl_langinfo (_NL_ABALTMON_1);
str = nl_langinfo (_NL_ABALTMON_2);
str = nl_langinfo (_NL_ABALTMON_3);
str = nl_langinfo (_NL_ABALTMON_4);
str = nl_langinfo (_NL_ABALTMON_5);
str = nl_langinfo (_NL_ABALTMON_6);
str = nl_langinfo (_NL_ABALTMON_7);
str = nl_langinfo (_NL_ABALTMON_8);
str = nl_langinfo (_NL_ABALTMON_9);
str = nl_langinfo (_NL_ABALTMON_10);
str = nl_langinfo (_NL_ABALTMON_11);
str = nl_langinfo (_NL_ABALTMON_12);
return 0;
}''', name : 'nl_langinfo (_NL_ABALTMON_n)')
glib_conf.set('HAVE_LANGINFO_ABALTMON', 1)
endif
# Check for nl_langinfo and _NL_TIME_CODESET
if cc.links('''#include <langinfo.h>
int main (int argc, char ** argv) {
char *codeset = nl_langinfo (_NL_TIME_CODESET);
return 0;
}''', name : 'nl_langinfo and _NL_TIME_CODESET')
glib_conf.set('HAVE_LANGINFO_TIME_CODESET', 1)
endif
# Check if C compiler supports the 'signed' keyword
if not cc.compiles('''signed char x;''', name : 'signed')
glib_conf.set('signed', '/* NOOP */')
endif
# Check if the ptrdiff_t type exists
if cc.has_header_symbol('stddef.h', 'ptrdiff_t')
glib_conf.set('HAVE_PTRDIFF_T', 1)
endif
# Check for sig_atomic_t type
if cc.links('''#include <signal.h>
#include <sys/types.h>
sig_atomic_t val = 42;
int main (int argc, char ** argv) {
return val == 42 ? 0 : 1;
}''', name : 'sig_atomic_t')
glib_conf.set('HAVE_SIG_ATOMIC_T', 1)
endif
# Check if 'long long' works
# jm_AC_TYPE_LONG_LONG
if cc.compiles('''long long ll = 1LL;
int i = 63;
int some_func (void) {
long long llmax = (long long) -1;
return ll << i | ll >> i | llmax / ll | llmax % ll;
}''', name : 'long long')
glib_conf.set('HAVE_LONG_LONG', 1)
have_long_long = true
else
have_long_long = false
endif
# Test whether the compiler supports the 'long double' type.
if cc.compiles('''/* The Stardent Vistra knows sizeof(long double), but does not support it. */
long double foo = 0.0;
/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
int array [2*(sizeof(long double) >= sizeof(double)) - 1];''',
name : 'long double')
glib_conf.set('HAVE_LONG_DOUBLE', 1)
endif
# Test whether <stddef.h> has the 'wchar_t' type.
if cc.has_header_symbol('stddef.h', 'wchar_t')
glib_conf.set('HAVE_WCHAR_T', 1)
endif
# Test whether <wchar.h> has the 'wint_t' type.
if cc.has_header_symbol('wchar.h', 'wint_t')
glib_conf.set('HAVE_WINT_T', 1)
endif
found_uintmax_t = false
# Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists,
# doesn't clash with <sys/types.h>, and declares uintmax_t.
# jm_AC_HEADER_INTTYPES_H
if cc.compiles('''#include <sys/types.h>
#include <inttypes.h>
void some_func (void) {
uintmax_t i = (uintmax_t) -1;
}''', name : 'uintmax_t in inttypes.h')
glib_conf.set('HAVE_INTTYPES_H_WITH_UINTMAX', 1)
found_uintmax_t = true
endif
# Define HAVE_STDINT_H_WITH_UINTMAX if <stdint.h> exists,
# doesn't clash with <sys/types.h>, and declares uintmax_t.
# jm_AC_HEADER_STDINT_H
if cc.compiles('''#include <sys/types.h>
#include <stdint.h>
void some_func (void) {
uintmax_t i = (uintmax_t) -1;
}''', name : 'uintmax_t in stdint.h')
glib_conf.set('HAVE_STDINT_H_WITH_UINTMAX', 1)
found_uintmax_t = true
endif
# Define intmax_t to 'long' or 'long long'
# if it is not already defined in <stdint.h> or <inttypes.h>.
# For simplicity, we assume that a header file defines 'intmax_t' if and
# only if it defines 'uintmax_t'.
if found_uintmax_t
glib_conf.set('HAVE_INTMAX_T', 1)
elif have_long_long
glib_conf.set('intmax_t', 'long long')
else
glib_conf.set('intmax_t', 'long')
endif
char_size = cc.sizeof('char')
short_size = cc.sizeof('short')
int_size = cc.sizeof('int')
voidp_size = cc.sizeof('void*')
long_size = cc.sizeof('long')
if have_long_long
long_long_size = cc.sizeof('long long')
else
long_long_size = 0
endif
sizet_size = cc.sizeof('size_t')
if cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl'
ssizet_size = cc.sizeof('SSIZE_T', prefix : '#include <BaseTsd.h>')
else
ssizet_size = cc.sizeof('ssize_t', prefix : '#include <unistd.h>')
endif
# Some platforms (Apple) hard-code int64_t to long long instead of
# using long on 64-bit architectures. This can cause type mismatch
# warnings when trying to interface with code using the standard
# library type. Test for the warnings and set gint64 to whichever
# works.
if long_long_size == long_size
if cc.compiles('''#if defined(_AIX) && !defined(__GNUC__)
#pragma options langlvl=stdc99
#endif
#pragma GCC diagnostic error "-Wincompatible-pointer-types"
#include <stdint.h>
#include <stdio.h>
int main () {
int64_t i1 = 1;
long *i2 = &i1;
return 1;
}''', name : 'int64_t is long')
int64_t_typedef = 'long'
elif cc.compiles('''#if defined(_AIX) && !defined(__GNUC__)
#pragma options langlvl=stdc99
#endif
#pragma GCC diagnostic error "-Wincompatible-pointer-types"
#include <stdint.h>
#include <stdio.h>
int main () {
int64_t i1 = 1;
long long *i2 = &i1;
return 1;
}''', name : 'int64_t is long long')
int64_t_typedef = 'long long'
endif
endif
int64_m = 'll'
char_align = cc.alignment('char')
short_align = cc.alignment('short')
int_align = cc.alignment('int')
voidp_align = cc.alignment('void*')
long_align = cc.alignment('long')
long_long_align = cc.alignment('long long')
# NOTE: We don't check for size of __int64 because long long is guaranteed to
# be 64-bit in C99, and it is available on all supported compilers
sizet_align = cc.alignment('size_t')
glib_conf.set('ALIGNOF_UNSIGNED_LONG', long_align)
glib_conf.set('SIZEOF_CHAR', char_size)
glib_conf.set('SIZEOF_INT', int_size)
glib_conf.set('SIZEOF_SHORT', short_size)
glib_conf.set('SIZEOF_LONG', long_size)
glib_conf.set('SIZEOF_LONG_LONG', long_long_size)
glib_conf.set('SIZEOF_SIZE_T', sizet_size)
glib_conf.set('SIZEOF_SSIZE_T', ssizet_size)
glib_conf.set('SIZEOF_VOID_P', voidp_size)
glib_conf.set('SIZEOF_WCHAR_T', cc.sizeof('wchar_t', prefix: '#include <stddef.h>'))
if short_size == 2
gint16 = 'short'
gint16_modifier='h'
gint16_format='hi'
guint16_format='hu'
elif int_size == 2
gint16 = 'int'
gint16_modifier=''
gint16_format='i'
guint16_format='u'
else
error('Compiler provides no native 16-bit integer type')
endif
glibconfig_conf.set('gint16', gint16)
glibconfig_conf.set_quoted('gint16_modifier', gint16_modifier)
glibconfig_conf.set_quoted('gint16_format', gint16_format)
glibconfig_conf.set_quoted('guint16_format', guint16_format)
if short_size == 4
gint32 = 'short'
gint32_modifier='h'
gint32_format='hi'
guint32_format='hu'
guint32_align = short_align
elif int_size == 4
gint32 = 'int'
gint32_modifier=''
gint32_format='i'
guint32_format='u'
guint32_align = int_align
elif long_size == 4
gint32 = 'long'
gint32_modifier='l'
gint32_format='li'
guint32_format='lu'
guint32_align = long_align
else
error('Compiler provides no native 32-bit integer type')
endif
glibconfig_conf.set('gint32', gint32)
glibconfig_conf.set_quoted('gint32_modifier', gint32_modifier)
glibconfig_conf.set_quoted('gint32_format', gint32_format)
glibconfig_conf.set_quoted('guint32_format', guint32_format)
glib_conf.set('ALIGNOF_GUINT32', guint32_align)
if int_size == 8
gint64 = 'int'
gint64_modifier=''
gint64_format='i'
guint64_format='u'
glib_extension=''
gint64_constant='(val)'
guint64_constant='(val)'
guint64_align = int_align
elif long_size == 8 and (long_long_size != long_size or int64_t_typedef == 'long')
gint64 = 'long'
glib_extension=''
gint64_modifier='l'
gint64_format='li'
guint64_format='lu'
gint64_constant='(val##L)'
guint64_constant='(val##UL)'
guint64_align = long_align
elif long_long_size == 8 and (long_long_size != long_size or int64_t_typedef == 'long long')
gint64 = 'long long'
glib_extension='G_GNUC_EXTENSION '
gint64_modifier=int64_m
gint64_format=int64_m + 'i'
guint64_format=int64_m + 'u'
gint64_constant='(G_GNUC_EXTENSION (val##LL))'
guint64_constant='(G_GNUC_EXTENSION (val##ULL))'
guint64_align = long_long_align
else
error('Compiler provides no native 64-bit integer type')
endif
glibconfig_conf.set('glib_extension', glib_extension)
glibconfig_conf.set('gint64', gint64)
glibconfig_conf.set_quoted('gint64_modifier', gint64_modifier)
glibconfig_conf.set_quoted('gint64_format', gint64_format)
glibconfig_conf.set_quoted('guint64_format', guint64_format)
glibconfig_conf.set('gint64_constant', gint64_constant)
glibconfig_conf.set('guint64_constant', guint64_constant)
glib_conf.set('ALIGNOF_GUINT64', guint64_align)
if host_system == 'windows'
glibconfig_conf.set('g_pid_type', 'void*')
glibconfig_conf.set_quoted('g_pid_format', 'p')
if host_machine.cpu_family() == 'x86_64'
glibconfig_conf.set_quoted('g_pollfd_format', '%#' + int64_m + 'x')
else
glibconfig_conf.set_quoted('g_pollfd_format', '%#x')
endif
glibconfig_conf.set('g_dir_separator', '\\\\')
glibconfig_conf.set('g_searchpath_separator', ';')
else
glibconfig_conf.set('g_pid_type', 'int')
glibconfig_conf.set_quoted('g_pid_format', 'i')
glibconfig_conf.set_quoted('g_pollfd_format', '%d')
glibconfig_conf.set('g_dir_separator', '/')
glibconfig_conf.set('g_searchpath_separator', ':')
endif
g_sizet_compatibility = {
'short': sizet_size == short_size,
'int': sizet_size == int_size,
'long': sizet_size == long_size,
'long long': sizet_size == long_long_size,
}
# Do separate checks for gcc/clang (and ignore other compilers for now), since
# we need to explicitly pass -Werror to the compilers.
# FIXME: https://github.com/mesonbuild/meson/issues/5399
if cc.get_id() == 'gcc' or cc.get_id() == 'clang'
foreach type_name, size_compatibility : g_sizet_compatibility
g_sizet_compatibility += { type_name: size_compatibility and
cc.compiles(
'''#include <stddef.h>
size_t f (size_t *i) { return *i + 1; }
int main (void) {
unsigned ''' + type_name + ''' i = 0;
f (&i);
return 0;
}''',
args: ['-Werror'],
name : 'GCC size_t typedef is ' + type_name), }
endforeach
endif
if g_sizet_compatibility['short']
glibconfig_conf.set('glib_size_type_define', 'short')
glibconfig_conf.set_quoted('gsize_modifier', 'h')
glibconfig_conf.set_quoted('gssize_modifier', 'h')
glibconfig_conf.set_quoted('gsize_format', 'hu')
glibconfig_conf.set_quoted('gssize_format', 'hi')
glibconfig_conf.set('glib_msize_type', 'SHRT')
elif g_sizet_compatibility['int']
glibconfig_conf.set('glib_size_type_define', 'int')
glibconfig_conf.set_quoted('gsize_modifier', '')
glibconfig_conf.set_quoted('gssize_modifier', '')
glibconfig_conf.set_quoted('gsize_format', 'u')
glibconfig_conf.set_quoted('gssize_format', 'i')
glibconfig_conf.set('glib_msize_type', 'INT')
elif g_sizet_compatibility['long']
glibconfig_conf.set('glib_size_type_define', 'long')
glibconfig_conf.set_quoted('gsize_modifier', 'l')
glibconfig_conf.set_quoted('gssize_modifier', 'l')
glibconfig_conf.set_quoted('gsize_format', 'lu')
glibconfig_conf.set_quoted('gssize_format', 'li')
glibconfig_conf.set('glib_msize_type', 'LONG')
elif g_sizet_compatibility['long long']
glibconfig_conf.set('glib_size_type_define', 'long long')
glibconfig_conf.set_quoted('gsize_modifier', int64_m)
glibconfig_conf.set_quoted('gssize_modifier', int64_m)
glibconfig_conf.set_quoted('gsize_format', int64_m + 'u')
glibconfig_conf.set_quoted('gssize_format', int64_m + 'i')
glibconfig_conf.set('glib_msize_type', 'INT64')
else
error('Could not determine size of size_t.')
endif
if voidp_size == int_size
glibconfig_conf.set('glib_intptr_type_define', 'int')
glibconfig_conf.set_quoted('gintptr_modifier', '')
glibconfig_conf.set_quoted('gintptr_format', 'i')
glibconfig_conf.set_quoted('guintptr_format', 'u')
glibconfig_conf.set('glib_gpi_cast', '(gint)')
glibconfig_conf.set('glib_gpui_cast', '(guint)')
elif voidp_size == long_size
glibconfig_conf.set('glib_intptr_type_define', 'long')
glibconfig_conf.set_quoted('gintptr_modifier', 'l')
glibconfig_conf.set_quoted('gintptr_format', 'li')
glibconfig_conf.set_quoted('guintptr_format', 'lu')
glibconfig_conf.set('glib_gpi_cast', '(glong)')
glibconfig_conf.set('glib_gpui_cast', '(gulong)')
elif voidp_size == long_long_size
glibconfig_conf.set('glib_intptr_type_define', 'long long')
glibconfig_conf.set_quoted('gintptr_modifier', int64_m)
glibconfig_conf.set_quoted('gintptr_format', int64_m + 'i')
glibconfig_conf.set_quoted('guintptr_format', int64_m + 'u')
glibconfig_conf.set('glib_gpi_cast', '(gint64)')
glibconfig_conf.set('glib_gpui_cast', '(guint64)')
else
error('Could not determine size of void *')
endif
if long_size != 8 and long_long_size != 8 and int_size != 8
error('GLib requires a 64-bit type. You might want to consider using the GNU C compiler.')
endif
glibconfig_conf.set('gintbits', int_size * 8)
glibconfig_conf.set('glongbits', long_size * 8)
glibconfig_conf.set('gsizebits', sizet_size * 8)
glibconfig_conf.set('gssizebits', ssizet_size * 8)
# XXX: https://gitlab.gnome.org/GNOME/glib/issues/1413
if host_system == 'windows'
g_module_suffix = 'dll'
else
g_module_suffix = 'so'
endif
glibconfig_conf.set('g_module_suffix', g_module_suffix)
glibconfig_conf.set('GLIB_MAJOR_VERSION', major_version)
glibconfig_conf.set('GLIB_MINOR_VERSION', minor_version)
glibconfig_conf.set('GLIB_MICRO_VERSION', micro_version)
glibconfig_conf.set('GLIB_VERSION', glib_version)
glibconfig_conf.set('glib_void_p', voidp_size)
glibconfig_conf.set('glib_long', long_size)
glibconfig_conf.set('glib_size_t', sizet_size)
glibconfig_conf.set('glib_ssize_t', ssizet_size)
if host_machine.endian() == 'big'
glibconfig_conf.set('g_byte_order', 'G_BIG_ENDIAN')
glibconfig_conf.set('g_bs_native', 'BE')
glibconfig_conf.set('g_bs_alien', 'LE')
else
glibconfig_conf.set('g_byte_order', 'G_LITTLE_ENDIAN')
glibconfig_conf.set('g_bs_native', 'LE')
glibconfig_conf.set('g_bs_alien', 'BE')
endif
# === va_copy checks ===
glib_vacopy = ''
# We check for G_VA_COPY_AS_ARRAY for historical reasons, but we no longer
# use it: use Standard C va_copy() instead.
va_list_val_copy_prog = '''
#include <stdarg.h>
#include <stdlib.h>
void f (int i, ...) {
va_list args1, args2;
va_start (args1, i);
args2 = args1;
if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
exit (1);
va_end (args1); va_end (args2);
}
int main() {
f (0, 42);
return 0;
}'''
if cc_can_run
rres = cc.run(va_list_val_copy_prog, name : 'va_lists can be copied as values')
glib_va_val_copy = rres.compiled() and rres.returncode() == 0
else
glib_va_val_copy = meson.get_external_property('va_val_copy', true)
endif
if not glib_va_val_copy
glib_vacopy = glib_vacopy + '\n#define G_VA_COPY_AS_ARRAY 1'
glib_conf.set('G_VA_COPY_AS_ARRAY', 1)
endif
glibconfig_conf.set('glib_vacopy', glib_vacopy)
# check for flavours of varargs macros
g_have_iso_c_varargs = cc.compiles('''
void some_func (void) {
int a(int p1, int p2, int p3);
#define call_a(...) a(1,__VA_ARGS__)
call_a(2,3);
}''', name : 'ISO C99 varargs macros in C')
if not g_have_iso_c_varargs
error('GLib requires a C compiler with support for C99 __VA_ARG__ in macros.')
endif
if have_cxx
g_have_iso_cxx_varargs = cxx.compiles('''
void some_func (void) {
int a(int p1, int p2, int p3);
#define call_a(...) a(1,__VA_ARGS__)
call_a(2,3);
}''', name : 'ISO C99 varargs macros in C++')
if not g_have_iso_cxx_varargs
error('GLib requires a C++ compiler with support for C99 __VA_ARG__ in macros.')
endif
endif
g_have_gnuc_varargs = cc.compiles('''
void some_func (void) {
int a(int p1, int p2, int p3);
#define call_a(params...) a(1,params)
call_a(2,3);
}''', name : 'GNUC varargs macros')
if cc.has_header('alloca.h')
glibconfig_conf.set('GLIB_HAVE_ALLOCA_H', true)
endif
has_syspoll = cc.has_header('sys/poll.h')
has_systypes = cc.has_header('sys/types.h')
if has_syspoll
glibconfig_conf.set('GLIB_HAVE_SYS_POLL_H', true)
endif
has_winsock2 = cc.has_header('winsock2.h')
if has_syspoll and has_systypes
poll_includes = '''
#include<sys/poll.h>
#include<sys/types.h>'''
elif has_winsock2
poll_includes = '''
#define _WIN32_WINNT @0@
#include <winsock2.h>'''.format(glib_conf.get('_WIN32_WINNT'))
else
# FIXME?
error('FIX POLL* defines')
endif
poll_defines = [
[ 'POLLIN', 'g_pollin', 1 ],
[ 'POLLOUT', 'g_pollout', 4 ],
[ 'POLLPRI', 'g_pollpri', 2 ],
[ 'POLLERR', 'g_pollerr', 8 ],
[ 'POLLHUP', 'g_pollhup', 16 ],
[ 'POLLNVAL', 'g_pollnval', 32 ],
]
if has_syspoll and has_systypes
foreach d : poll_defines
val = cc.compute_int(d[0], prefix: poll_includes)
glibconfig_conf.set(d[1], val)
endforeach
elif has_winsock2
# Due to a missed bug in configure.ac the poll test
# never succeeded on Windows and used some pre-defined
# values as a fallback. Keep using them to maintain
# ABI compatibility with autotools builds of glibs
# and with *any* glib-using code compiled against them,
# since these values end up in a public header glibconfig.h.
foreach d : poll_defines
glibconfig_conf.set(d[1], d[2])
endforeach
endif
# Internet address families
# FIXME: what about Cygwin (G_WITH_CYGWIN)
if host_system == 'windows'
inet_includes = '''
#include <winsock2.h>'''
else
inet_includes = '''
#include <sys/types.h>
#include <sys/socket.h>'''
endif
inet_defines = [
[ 'AF_UNIX', 'g_af_unix' ],
[ 'AF_INET', 'g_af_inet' ],
[ 'AF_INET6', 'g_af_inet6' ],
[ 'MSG_OOB', 'g_msg_oob' ],
[ 'MSG_PEEK', 'g_msg_peek' ],
[ 'MSG_DONTROUTE', 'g_msg_dontroute' ],
]
foreach d : inet_defines
val = cc.compute_int(d[0], prefix: inet_includes)
glibconfig_conf.set(d[1], val)
endforeach
if host_system == 'windows'
have_ipv6 = true
else
have_ipv6 = cc.has_type('struct in6_addr', prefix: '#include <netinet/in.h>')
endif
glib_conf.set('HAVE_IPV6', have_ipv6)
# We need to decide at configure time if GLib will use real atomic
# operations ("lock free") or emulated ones with a mutex. This is
# because we must put this information in glibconfig.h so we know if
# it is safe or not to inline using compiler intrinsics directly from
# the header.
#
# We also publish the information via G_ATOMIC_LOCK_FREE in case the
# user is interested in knowing if they can use the atomic ops across
# processes.
#
# We can currently support the atomic ops natively when building GLib
# with recent versions of GCC or MSVC.
#
# Note that the atomic ops are only available with GCC on x86 when
# using -march=i486 or higher. If we detect that the atomic ops are
# not available but would be available given the right flags, we want
# to abort and advise the user to fix their CFLAGS. It's better to do
# that then to silently fall back on emulated atomic ops just because
# the user had the wrong build environment.
atomictest = '''int main() {
int atomic = 2;
__sync_bool_compare_and_swap (&atomic, 2, 3);
return 0;
}
'''
atomicdefine = '''
#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
#error "compiler has atomic ops, but doesn't define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4"
#endif
'''
# We know that we can always use real ("lock free") atomic operations with MSVC
if cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl' or cc.links(atomictest, name : 'atomic ops')
have_atomic_lock_free = true
if cc.get_id() == 'gcc' and not cc.compiles(atomicdefine, name : 'atomic ops define')
# Old gcc release may provide
# __sync_bool_compare_and_swap but doesn't define
# __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
glib_conf.set('__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4', true)
endif
if cc.get_id() == 'gcc' or cc.get_id() == 'clang'
sync_swap_test = '''
int main() {
int atomic = 2;
__sync_swap (&atomic, 2);
return 0;
}
'''
glib_conf.set('_GLIB_GCC_HAVE_SYNC_SWAP', cc.links(sync_swap_test, name : 'sync swap'))
endif
else
have_atomic_lock_free = false
if host_machine.cpu_family() == 'x86' and cc.links(atomictest, args : '-march=i486')
error('GLib must be built with -march=i486 or later.')
endif
endif
glibconfig_conf.set('G_ATOMIC_LOCK_FREE', have_atomic_lock_free)
# === Threads ===
if get_option('force_posix_threads')
warning('DEPRECATION: Option \'force_posix_threads\' is deprecated and will be removed after GLib 2.72; please file an issue with your use case if you still require it')
endif
# Determination of thread implementation
if host_system == 'windows' and not get_option('force_posix_threads')
thread_dep = []
threads_implementation = 'win32'
glibconfig_conf.set('g_threads_impl_def', 'WIN32')
glib_conf.set('THREADS_WIN32', 1)
else
thread_dep = dependency('threads')
threads_implementation = 'posix'
pthread_prefix = '''
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <pthread.h>'''
glibconfig_conf.set('g_threads_impl_def', 'POSIX')
glib_conf.set('THREADS_POSIX', 1)
if cc.has_header_symbol('pthread.h', 'pthread_attr_setstacksize')
glib_conf.set('HAVE_PTHREAD_ATTR_SETSTACKSIZE', 1)
endif
if cc.has_header_symbol('pthread.h', 'pthread_attr_setinheritsched')
glib_conf.set('HAVE_PTHREAD_ATTR_SETINHERITSCHED', 1)
endif
if cc.has_header_symbol('pthread.h', 'pthread_condattr_setclock')
glib_conf.set('HAVE_PTHREAD_CONDATTR_SETCLOCK', 1)
endif
if cc.has_header_symbol('pthread.h', 'pthread_cond_timedwait_relative_np')
glib_conf.set('HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE_NP', 1)
endif
if cc.has_header_symbol('pthread.h', 'pthread_getname_np', prefix : pthread_prefix)
glib_conf.set('HAVE_PTHREAD_GETNAME_NP', 1)
endif
if cc.has_header_symbol('sys/syscall.h', 'SYS_sched_getattr')
glib_conf.set('HAVE_SYS_SCHED_GETATTR', 1)
endif
# Assume that pthread_setname_np is available in some form; same as configure
if cc.links(pthread_prefix + '''
int main() {
pthread_setname_np("example");
return 0;
}''',
name : 'pthread_setname_np(const char*)',
dependencies : thread_dep)
# macOS and iOS
glib_conf.set('HAVE_PTHREAD_SETNAME_NP_WITHOUT_TID', 1)
elif cc.links(pthread_prefix + '''
int main() {
pthread_setname_np(pthread_self(), "example");
return 0;
}''',
name : 'pthread_setname_np(pthread_t, const char*)',
dependencies : thread_dep)
# Linux, Solaris, etc.
glib_conf.set('HAVE_PTHREAD_SETNAME_NP_WITH_TID', 1)
elif cc.links(pthread_prefix + '''
int main() {
pthread_setname_np(pthread_self(), "%s", "example");
return 0;
}''',
name : 'pthread_setname_np(pthread_t, const char*, void*)',
dependencies : thread_dep)
# NetBSD
glib_conf.set('HAVE_PTHREAD_SETNAME_NP_WITH_TID_AND_ARG', 1)
elif cc.links(pthread_prefix + '''
#include <pthread_np.h>
int main() {
pthread_set_name_np(pthread_self(), "example");
return 0;
}''',
name : 'pthread_set_name_np(pthread_t, const char*)',
dependencies : thread_dep)
# FreeBSD, DragonFlyBSD, OpenBSD, etc.
glib_conf.set('HAVE_PTHREAD_SET_NAME_NP', 1)
endif
endif
# FIXME: we should make it print the result and always return 0, so that
# the output in meson shows up as green
# volatile is needed here to avoid optimisations in the test
stack_grows_check_prog = '''
volatile int *a = 0, *b = 0;
void f (int i) {
volatile int x = 5;
if (i == 0)
b = &x;
else
f (i - 1);
}
int main () {
volatile int y = 7;
a = &y;
f (100);
return b > a ? 0 : 1;
}'''
if cc_can_run
rres = cc.run(stack_grows_check_prog, name : 'stack grows check')
growing_stack = rres.compiled() and rres.returncode() == 0
else
growing_stack = meson.get_external_property('growing_stack', false)
endif
glibconfig_conf.set10('G_HAVE_GROWING_STACK', growing_stack)
# Tests for iconv
#
# We should never use the MinGW C library's iconv because it may not be
# available in the actual runtime environment. On Windows, we always use
# the built-in implementation
if host_system == 'windows'
# We have a #include "win_iconv.c" in gconvert.c on Windows, so we don't need
# any external library for it
libiconv = []
else
libiconv = dependency('iconv')
endif
pcre2 = dependency('libpcre2-8', version: '>= 10.32', required : false)
if not pcre2.found()
if cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl'
# MSVC: Search for the PCRE2 library by the configuration, which corresponds
# to the output of CMake builds of PCRE2. Note that debugoptimized
# is really a Release build with .PDB files.
if vs_crt == 'debug'
pcre2 = cc.find_library('pcre2d-8', required : false)
else
pcre2 = cc.find_library('pcre2-8', required : false)
endif
endif
endif
# Try again with the fallback
if not pcre2.found()
pcre2 = dependency('libpcre2-8', required : true, fallback : ['pcre2', 'libpcre2_8'])
use_pcre2_static_flag = true
elif host_system == 'windows'
pcre2_static = cc.links('''#define PCRE2_STATIC
#define PCRE2_CODE_UNIT_WIDTH 8
#include <pcre2.h>
int main() {
void *p = NULL;
pcre2_code_free(p);
return 0;
}''',
dependencies: pcre2,
name : 'Windows system PCRE2 is a static build')
use_pcre2_static_flag = pcre2_static
else
use_pcre2_static_flag = false
endif
# Import the gvdb sources as a subproject to avoid having the copylib in-tree
subproject('gvdb')
gvdb_dep = dependency('gvdb')
libm = cc.find_library('m', required : false)
libffi_dep = dependency('libffi', version : '>= 3.0.0', fallback : ['libffi', 'ffi_dep'])
libz_dep = dependency('zlib')
# First check in libc, fallback to libintl, and as last chance build
# proxy-libintl subproject.
# FIXME: glib-gettext.m4 has much more checks to detect broken/uncompatible
# implementations. This could be extended if issues are found in some platforms.
libintl_deps = []
libintl = dependency('intl', required: false)
if libintl.found()
# libintl supports different threading APIs, which may not
# require additional flags, but it defaults to using pthreads if
# found. Meson's "threads" dependency does not allow you to
# prefer pthreads. We may not be using pthreads for glib itself
# either so just link the library to satisfy libintl rather than
# also defining the macros with the -pthread flag.
#
# Meson's builtin dependency lookup as of 0.60.0 doesn't check for
# pthread, so we do this manually here.
if cc.has_function('ngettext', dependencies : libintl)
libintl_deps += [libintl]
else
libintl_pthread = cc.find_library('pthread', required : false)
if libintl_pthread.found() and cc.has_function('ngettext', dependencies : [libintl, libintl_pthread])
libintl_deps += [libintl, libintl_pthread]
else
libintl = disabler()
endif
endif
endif
if libintl.found()
have_bind_textdomain_codeset = cc.has_function('bind_textdomain_codeset', dependencies: libintl_deps)
else
libintl = subproject('proxy-libintl').get_variable('intl_dep')
libintl_deps = [libintl]
have_bind_textdomain_codeset = true # proxy-libintl supports it
endif
glib_conf.set('HAVE_BIND_TEXTDOMAIN_CODESET', have_bind_textdomain_codeset)
# We require gettext to always be present
glib_conf.set('HAVE_DCGETTEXT', 1)
glib_conf.set('HAVE_GETTEXT', 1)
glib_conf.set_quoted('GLIB_LOCALE_DIR', join_paths(glib_datadir, 'locale'))
# libmount is only used by gio, but we need to fetch the libs to generate the
# pkg-config file below
libmount_dep = []
if host_system == 'linux'
libmount_dep = dependency('mount', version : '>=2.23', required : get_option('libmount'))
glib_conf.set('HAVE_LIBMOUNT', libmount_dep.found())
endif
if host_system == 'windows'
winsock2 = cc.find_library('ws2_32')
else
winsock2 = not_found
endif
selinux_dep = []
if host_system == 'linux'
selinux_dep = dependency('libselinux', version: '>=2.2', required: get_option('selinux'))
glib_conf.set('HAVE_SELINUX', selinux_dep.found())
endif
xattr_dep = []
if host_system != 'windows' and get_option('xattr')
# either glibc or libattr can provide xattr support
# for both of them, we check for getxattr being in
# the library and a valid xattr header.
# try glibc
if cc.has_function('getxattr') and cc.has_header('sys/xattr.h')
glib_conf.set('HAVE_SYS_XATTR_H', 1)
glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format('HAVE_SYS_XATTR_H')
#failure. try libattr
elif cc.has_header_symbol('attr/xattr.h', 'getxattr')
glib_conf.set('HAVE_ATTR_XATTR_H', 1)
glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format('HAVE_ATTR_XATTR_H')
xattr_dep = [cc.find_library('xattr')]
else
error('No getxattr implementation found in C library or libxattr')
endif
glib_conf.set('HAVE_XATTR', 1)
if cc.compiles(glib_conf_prefix + '''
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_XATTR_H
#include <sys/xattr.h>
#elif HAVE_ATTR_XATTR_H
#include <attr/xattr.h>
#endif
int main (void) {
ssize_t len = getxattr("", "", NULL, 0, 0, XATTR_NOFOLLOW);
return len;
}''',
name : 'XATTR_NOFOLLOW')
glib_conf.set('HAVE_XATTR_NOFOLLOW', 1)
endif
endif
# If strlcpy is present (BSD and similar), check that it conforms to the BSD
# specification. Specifically Solaris 8's strlcpy() does not, see
# https://bugzilla.gnome.org/show_bug.cgi?id=53933 for further context.
if cc.has_function('strlcpy')
if cc_can_run
rres = cc.run('''#include <stdlib.h>
#include <string.h>
int main() {
char p[10];
(void) strlcpy (p, "hi", 10);
if (strlcat (p, "bye", 0) != 3)
return 1;
return 0;
}''',
name : 'OpenBSD strlcpy/strlcat')
if rres.compiled() and rres.returncode() == 0
glib_conf.set('HAVE_STRLCPY', 1)
endif
elif meson.get_external_property('have_strlcpy', false)
glib_conf.set('HAVE_STRLCPY', 1)
endif
endif
cmdline_test_code = '''
#include <fcntl.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static int
__getcmdline (void)
{
/* This code is a dumbed-down version of g_file_get_contents() */
#ifndef O_BINARY
#define O_BINARY 0
#endif
#define BUFSIZE 1024
char result[BUFSIZE];
struct stat stat_buf;
int fd = open ("/proc/self/cmdline", O_RDONLY|O_BINARY);
if (fd < 0)
exit (1);
if (fstat (fd, &stat_buf))
exit (1);
if (stat_buf.st_size > 0 && S_ISREG (stat_buf.st_mode))
{
if (read (fd, result, BUFSIZE) <= 0)
exit (1);
}
else
{
FILE *f = fdopen (fd, "r");
if (f == NULL)
exit (1);
if (fread (result, 1, BUFSIZE, f) <= 0)
exit (1);
}
return 0;
}
int
main (void)
{
exit (__getcmdline ());
}'''
if cc_can_run
rres = cc.run(cmdline_test_code, name : '/proc/self/cmdline')
have_proc_self_cmdline = rres.compiled() and rres.returncode() == 0
else
have_proc_self_cmdline = meson.get_external_property('have_proc_self_cmdline', false)
endif
glib_conf.set('HAVE_PROC_SELF_CMDLINE', have_proc_self_cmdline)
python = import('python').find_installation()
# used for '#!/usr/bin/env <name>'
python_name = 'python3'
python_version = python.language_version()
python_version_req = '>=3.5'
if not python_version.version_compare(python_version_req)
error('Requires Python @0@, @1@ found.'.format(python_version_req, python_version))
endif
# Determine which user environment-dependent files that we want to install
have_bash = find_program('bash', required : false).found() # For completion scripts
bash_comp_dep = dependency('bash-completion', version: '>=2.0', required: false)
have_sh = find_program('sh', required : false).found() # For glib-gettextize
# Some installed tests require a custom environment
env_program = find_program('env', required: installed_tests_enabled)
# FIXME: How to detect Solaris? https://github.com/mesonbuild/meson/issues/1578
if host_system == 'sunos'
glib_conf.set('_XOPEN_SOURCE_EXTENDED', 1)
glib_conf.set('_XOPEN_SOURCE', 2)
glib_conf.set('__EXTENSIONS__',1)
endif
# Sadly Meson does not expose this value:
# https://github.com/mesonbuild/meson/pull/3460
if host_system == 'windows'
# Autotools explicitly removed --Wl,--export-all-symbols from windows builds,
# with no explanation. Do the same here for now but this could be revisited if
# if causes issues.
export_dynamic_ldflags = []
elif host_system == 'cygwin'
export_dynamic_ldflags = ['-Wl,--export-all-symbols']
elif host_system in ['darwin', 'ios']
export_dynamic_ldflags = []
elif host_system == 'sunos'
export_dynamic_ldflags = []
else
export_dynamic_ldflags = ['-Wl,--export-dynamic']
endif
win32_cflags = []
win32_ldflags = []
if host_system == 'windows' and cc.get_id() != 'msvc' and cc.get_id() != 'clang-cl'
# Ensure MSVC-compatible struct packing convention is used when
# compiling for Win32 with gcc. It is used for the whole project and exposed
# in glib-2.0.pc.
win32_cflags = ['-mms-bitfields']
add_project_arguments(win32_cflags, language : 'c')
# Win32 API libs, used only by libglib and exposed in glib-2.0.pc
win32_ldflags = ['-lws2_32', '-lole32', '-lwinmm', '-lshlwapi', '-luuid']
elif host_system == 'cygwin'
win32_ldflags = ['-luser32', '-lkernel32']
endif
# Tracing: dtrace
want_dtrace = get_option('dtrace')
enable_dtrace = false
# Since dtrace support is opt-in we just error out if it was requested but
# is not available. We don't bother with autodetection yet.
if want_dtrace
if glib_have_carbon
error('GLib dtrace support not yet compatible with macOS dtrace')
endif
dtrace = find_program('dtrace', required : true) # error out if not found
if not cc.has_header('sys/sdt.h')
error('dtrace support needs sys/sdt.h header')
endif
# FIXME: autotools build also passes -fPIC -DPIC but is it needed in this case?
dtrace_obj_gen = generator(dtrace,
output : '@BASENAME@.o',
arguments : ['-G', '-s', '@INPUT@', '-o', '@OUTPUT@'])
dtrace_hdr_gen = generator(python,
output : '@BASENAME@.h',
arguments : ['-c', '''
import subprocess, sys
subprocess.run(sys.argv[1:], check=True)
output = sys.argv[6]
with open(output) as f:
contents = f.read()
contents = contents.replace("define STAP_HAS_SEMAPHORES 1",
"undef STAP_HAS_SEMAPHORES")
contents = contents.replace("define _SDT_HAS_SEMAPHORES 1",
"undef _SDT_HAS_SEMAPHORES")
with open(output, "w") as f:
f.write(contents)
''', dtrace.full_path(), '-h', '-s', '@INPUT@', '-o', '@OUTPUT@'])
glib_conf.set('HAVE_DTRACE', 1)
enable_dtrace = true
endif
# systemtap
want_systemtap = get_option('systemtap')
enable_systemtap = false
if want_systemtap and enable_dtrace
tapset_install_dir = get_option('tapset_install_dir')
if tapset_install_dir == ''
tapset_install_dir = join_paths(get_option('datadir'), 'systemtap/tapset', host_machine.cpu_family())
endif
stp_cdata = configuration_data()
stp_cdata.set('ABS_GLIB_RUNTIME_LIBDIR', glib_libdir)
stp_cdata.set('LT_CURRENT', minor_version * 100)
stp_cdata.set('LT_REVISION', micro_version)
enable_systemtap = true
endif
pkg = import('pkgconfig')
windows = import('windows')
subdir('tools')
subdir('glib')
subdir('gobject')
subdir('gthread')
subdir('gmodule')
subdir('gio')
subdir('fuzzing')
# xgettext is optional (on Windows for instance)
if find_program('xgettext', required : get_option('nls')).found()
subdir('po')
endif
# Install m4 macros that other projects use
install_data('m4macros/glib-2.0.m4', 'm4macros/glib-gettext.m4', 'm4macros/gsettings.m4',
install_dir : get_option('datadir') / 'aclocal',
install_tag : 'devel',
)
# Check whether we support overriding the invalid parameter handler on Windows for _get_osfhandle(),
# g_fsync() (i.e. _commit()), etc
if host_system == 'windows'
if cc.has_function('_set_thread_local_invalid_parameter_handler', prefix: '#include <stdlib.h>')
glib_conf.set('HAVE__SET_THREAD_LOCAL_INVALID_PARAMETER_HANDLER', 1)
endif
if cc.has_function('_set_invalid_parameter_handler', prefix: '#include <stdlib.h>')
glib_conf.set('HAVE__SET_INVALID_PARAMETER_HANDLER', 1)
endif
if cc.has_header_symbol('crtdbg.h', '_CrtSetReportMode')
glib_conf.set('HAVE__CRT_SET_REPORT_MODE', 1)
endif
endif
configure_file(output : 'config.h', configuration : glib_conf)
if host_system == 'windows'
install_headers([ 'msvc_recommended_pragmas.h' ], install_dir : glib_includedir)
endif
if get_option('man')
xsltproc = find_program('xsltproc', required : true)
xsltproc_command = [
xsltproc,
'--nonet',
'--stringparam', 'man.output.quietly', '1',
'--stringparam', 'funcsynopsis.style', 'ansi',
'--stringparam', 'man.th.extra1.suppress', '1',
'--stringparam', 'man.authors.section.enabled', '0',
'--stringparam', 'man.copyright.section.enabled', '0',
'-o', '@OUTPUT@',
'http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl',
'@INPUT@',
]
man1_dir = join_paths(glib_prefix, get_option('mandir'), 'man1')
endif
gnome = import('gnome')
subdir('docs/reference')
summary({
'host cpu' : host_machine.cpu_family(),
'host endian' : host_machine.endian(),
'host system' : host_system,
'C Compiler' : cc.get_id(),
'C++ Compiler' : have_cxx ? cxx.get_id() : 'none',
'shared build' : glib_build_shared,
'static build' : glib_build_static,
}, section: 'Build environment')
if build_machine.system() != host_system
summary({
'build cpu' : build_machine.cpu_family(),
'build endian' : build_machine.endian(),
'build system' : build_machine.system(),
}, section: 'Build environment')
endif
summary({
'prefix' : glib_prefix,
'bindir' : glib_bindir,
'libexecdir' : glib_libexecdir,
'pkgdatadir' : glib_pkgdatadir,
'datadir' : glib_datadir,
'includedir' : glib_includedir,
'giomodulesdir' : glib_giomodulesdir,
'localstatedir' : glib_localstatedir,
}, section: 'Directories')
if get_option('multiarch')
summary({
'multiarch bindir' : glib_bindir,
'multiarch libexecdir' : glib_libexecdir,
}, section: 'Directories')
endif
if enable_systemtap
summary('tapset dir', get_option('tapset_install_dir'), section: 'Directories')
endif
if host_system == 'linux'
summary({
'selinux' : selinux_dep.found(),
'libmount' : libmount_dep.found(),
}, section: 'Options')
endif
summary({
'xattr' : xattr_dep.length() > 0,
'man' : get_option('man'),
'dtrace' : get_option('dtrace'),
'systemtap' : enable_systemtap,
'sysprof' : libsysprof_capture_dep.found(),
'gtk_doc' : get_option('gtk_doc'),
'bsymbolic_functions' : get_option('bsymbolic_functions'),
'force_posix_threads' : get_option('force_posix_threads'),
'tests' : get_option('tests'),
'installed_tests' : get_option('installed_tests'),
'nls' : get_option('nls'),
'oss_fuzz' : get_option('oss_fuzz'),
'glib_debug' : get_option('glib_debug'),
'glib_assert' : get_option('glib_assert'),
'glib_checks' : get_option('glib_checks'),
'libelf' : get_option('libelf'),
'multiarch' : get_option('multiarch'),
}, section: 'Options')
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