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gstreamer/meson.build
Tim-Philipp Müller 57c8e0146f libs: figure out right export define in configure 
Add new GST_API_EXPORT in config.h and use that for GST_*_API
decorators instead of GST_EXPORT.

The right export define depends on the toolchain and whether
we're using -fvisibility=hidden or not, so it's better to set it
to the right thing directly than hard-coding a compiler whitelist
in the public header.

We put the export define into config.h instead of passing it via the
command line to the compiler because it might contain spaces and brackets
and in the autotools scenario we'd have to pass that through multiple
layers of plumbing and Makefile/shell escaping and we're just not going
to be *that* lucky.

The export define is only used if we're compiling our lib, not by external
users of the lib headers, so it's not a problem to put it into config.h

Also, this means all .c files of libs need to include config.h
to get the export marker defined, so fix up a few that didn't
include config.h.

This commit depends on a common submodule commit that makes gst-glib-gen.mak
add an #include "config.h" to generated enum/marshal .c files for the
autotools build.

https://bugzilla.gnome.org/show_bug.cgi?id=797185
2018-09-24 08:39:37 +01:00

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project('gstreamer', 'c',
version : '1.15.0.1',
meson_version : '>= 0.47',
default_options : [ 'warning_level=1',
'buildtype=debugoptimized' ])
gst_version = meson.project_version()
version_arr = gst_version.split('.')
gst_version_major = version_arr[0].to_int()
gst_version_minor = version_arr[1].to_int()
gst_version_micro = version_arr[2].to_int()
if version_arr.length() == 4
gst_version_nano = version_arr[3].to_int()
else
gst_version_nano = 0
endif
gst_version_is_dev = gst_version_minor % 2 == 1 and gst_version_micro < 90
host_system = host_machine.system()
apiversion = '1.0'
soversion = 0
# maintaining compatibility with the previous libtool versioning
# current = minor * 100 + micro
curversion = gst_version_minor * 100 + gst_version_micro
libversion = '@0@.@1@.0'.format(soversion, curversion)
osxversion = curversion + 1
prefix = get_option('prefix')
libexecdir = get_option('libexecdir')
helpers_install_dir = join_paths(libexecdir, 'gstreamer-1.0')
cc = meson.get_compiler('c')
cdata = configuration_data()
# Ignore several spurious warnings for things gstreamer does very commonly
# 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
if cc.get_id() == 'msvc'
add_project_arguments(
'/wd4018', # implicit signed/unsigned conversion
'/wd4146', # unary minus on unsigned (beware INT_MIN)
'/wd4244', # lossy type conversion (e.g. double -> int)
'/wd4305', # truncating type conversion (e.g. double -> float)
cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8
language : 'c')
elif cc.has_link_argument('-Wl,-Bsymbolic-functions')
# FIXME: Add an option for this if people ask for it
add_project_link_arguments('-Wl,-Bsymbolic-functions', language : 'c')
endif
# Symbol visibility
have_visibility_hidden = false
if cc.get_id() == 'msvc'
export_define = '__declspec(dllexport) extern'
elif cc.has_argument('-fvisibility=hidden')
add_project_arguments('-fvisibility=hidden', language: 'c')
export_define = 'extern __attribute__ ((visibility ("default")))'
have_visibility_hidden = true
else
export_define = 'extern'
endif
# Passing this through the command line would be too messy
cdata.set('GST_API_EXPORT', export_define)
# Disable strict aliasing
if cc.has_argument('-fno-strict-aliasing')
add_project_arguments('-fno-strict-aliasing', language: 'c')
endif
# Define G_DISABLE_DEPRECATED for development versions
if gst_version_is_dev
message('Disabling deprecated GLib API')
add_project_arguments('-DG_DISABLE_DEPRECATED', language: 'c')
endif
cast_checks = get_option('gobject-cast-checks')
if cast_checks.disabled() or (cast_checks.auto() and not gst_version_is_dev)
message('Disabling GLib cast checks')
add_project_arguments('-DG_DISABLE_CAST_CHECKS', language: 'c')
endif
glib_asserts = get_option('glib-asserts')
if glib_asserts.disabled() or (glib_asserts.auto() and not gst_version_is_dev)
message('Disabling GLib asserts')
add_project_arguments('-DG_DISABLE_ASSERT', language: 'c')
endif
glib_checks = get_option('glib-checks')
if glib_checks.disabled() or (glib_checks.auto() and not gst_version_is_dev)
message('Disabling GLib checks')
add_project_arguments('-DG_DISABLE_CHECKS', language: 'c')
endif
cdata.set_quoted('GST_API_VERSION', apiversion)
cdata.set_quoted('GST_DATADIR', join_paths(prefix, get_option('datadir')))
cdata.set_quoted('LOCALEDIR', join_paths(prefix, get_option('localedir')))
cdata.set_quoted('LIBDIR', join_paths(prefix, get_option('libdir')))
cdata.set_quoted('GST_API_VERSION', '1.0')
cdata.set_quoted('GETTEXT_PACKAGE', 'gstreamer-1.0')
cdata.set_quoted('GST_LICENSE', 'LGPL')
cdata.set_quoted('PACKAGE', 'gstreamer')
cdata.set_quoted('PACKAGE_NAME', 'GStreamer')
cdata.set_quoted('PACKAGE_STRING', 'GStreamer @0@'.format(gst_version))
cdata.set_quoted('PACKAGE_TARNAME', 'gstreamer')
cdata.set_quoted('PACKAGE_BUGREPORT', 'http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer')
cdata.set_quoted('PACKAGE_URL', '')
cdata.set_quoted('PACKAGE_VERSION', gst_version)
cdata.set_quoted('PLUGINDIR', join_paths(get_option('prefix'), get_option('libdir'), 'gstreamer-1.0'))
cdata.set_quoted('VERSION', gst_version)
cdata.set_quoted('GST_PLUGIN_SCANNER_INSTALLED', join_paths(prefix, helpers_install_dir, 'gst-plugin-scanner'))
cdata.set_quoted('GST_PTP_HELPER_INSTALLED', join_paths(prefix, helpers_install_dir, 'gst-ptp-helper'))
cdata.set_quoted('GST_PLUGIN_SCANNER_SUBDIR', libexecdir,
description: 'libexecdir path component, used to find plugin-scanner on relocatable builds on windows')
cdata.set('GST_DISABLE_OPTION_PARSING', not get_option('option-parsing'))
mem_align_opt = get_option('memory-alignment')
if mem_align_opt == 'malloc'
cdata.set('MEMORY_ALIGNMENT_MALLOC', 1)
elif mem_align_opt == 'pagesize'
cdata.set('MEMORY_ALIGNMENT_PAGESIZE', 1)
else
cdata.set('MEMORY_ALIGNMENT', mem_align_opt.to_int())
endif
if ['darwin', 'ios'].contains(host_system)
cdata.set_quoted('GST_EXTRA_MODULE_SUFFIX', '.dylib')
endif
if gst_version_nano > 0
# Have GST_ERROR message printed when running from git
cdata.set('GST_LEVEL_DEFAULT', 'GST_LEVEL_ERROR')
else
cdata.set('GST_LEVEL_DEFAULT', 'GST_LEVEL_NONE')
endif
# GStreamer package name and origin url
gst_package_name = get_option('package-name')
if gst_package_name == ''
if gst_version_nano == 0
gst_package_name = 'GStreamer source release'
elif gst_version_nano == 1
gst_package_name = 'GStreamer git'
else
gst_package_name = 'GStreamer prerelease'
endif
endif
cdata.set_quoted('GST_PACKAGE_NAME', gst_package_name)
cdata.set_quoted('GST_PACKAGE_ORIGIN', get_option('package-origin'))
# These are only needed/used by the ABI tests
host_defines = [
[ 'x86', 'HAVE_CPU_I386' ],
[ 'x86_64', 'HAVE_CPU_X86_64' ],
[ 'arm', 'HAVE_CPU_ARM' ],
[ 'aarch64', 'HAVE_CPU_AARCH64' ],
[ 'mips', 'HAVE_CPU_MIPS' ],
[ 'powerpc', 'HAVE_CPU_PPC' ],
[ 'powerpc64', 'HAVE_CPU_PPC64' ],
[ 'alpha', 'HAVE_CPU_ALPHA' ],
[ 'sparc', 'HAVE_CPU_SPARC' ],
[ 'ia64', 'HAVE_CPU_IA64' ],
[ 'hppa', 'HAVE_CPU_HPPA' ],
[ 'm68k', 'HAVE_CPU_M68K' ],
[ 's390', 'HAVE_CPU_S390' ],
]
foreach h : host_defines
if h.get(0) == host_machine.cpu()
cdata.set(h.get(1), 1)
endif
endforeach
# FIXME: should really be called HOST_CPU or such
cdata.set_quoted('TARGET_CPU', host_machine.cpu())
check_headers = [
'dlfcn.h',
'inttypes.h',
'memory.h',
'poll.h',
'stdint.h',
'stdio_ext.h',
'strings.h',
'string.h',
'sys/param.h',
'sys/poll.h',
'sys/prctl.h',
'sys/socket.h',
'sys/stat.h',
'sys/times.h',
'sys/time.h',
'sys/types.h',
'sys/utsname.h',
'sys/wait.h',
'ucontext.h',
'unistd.h',
'valgrind/valgrind.h',
'sys/resource.h',
]
if host_system == 'windows'
check_headers += ['winsock2.h']
endif
foreach h : check_headers
if cc.has_header(h)
define = 'HAVE_' + h.underscorify().to_upper()
cdata.set(define, 1)
endif
endforeach
if cc.has_member('struct tm', 'tm_gmtoff', prefix : '#include <time.h>')
cdata.set('HAVE_TM_GMTOFF', 1)
endif
check_functions = [
'gmtime_r',
'sigaction',
'getrusage',
'fseeko',
'ftello',
'poll',
'ppoll',
'pselect',
'getpagesize',
'clock_gettime',
# These are needed by libcheck
'getline',
'mkstemp',
'alarm',
'gettimeofday',
]
foreach f : check_functions
if cc.has_function(f)
define = 'HAVE_' + f.underscorify().to_upper()
cdata.set(define, 1)
endif
endforeach
if cc.has_function('localtime_r', prefix : '#include<time.h>')
cdata.set('HAVE_LOCALTIME_R', 1)
# Needed by libcheck
cdata.set('HAVE_DECL_LOCALTIME_R', 1)
endif
if cc.links('''#include <pthread.h>
int main() {
pthread_setname_np("example"); return 0;
}''', name : 'pthread_setname_np(const char*)')
cdata.set('HAVE_PTHREAD_SETNAME_NP_WITHOUT_TID', 1)
endif
# Check for posix timers and the monotonic clock
time_prefix = '#include <time.h>\n'
if cdata.has('HAVE_UNISTD_H')
time_prefix += '#include <unistd.h>'
endif
posix_timers_src = time_prefix + '''
#if !defined(_POSIX_TIMERS) || _POSIX_TIMERS < 0 || !defined(CLOCK_REALTIME)
#error Either _POSIX_TIMERS or CLOCK_REALTIME not defined
#endif
'''
if cc.compiles(posix_timers_src, name : 'posix timers from time.h')
cdata.set('HAVE_POSIX_TIMERS', 1)
endif
monotonic_clock_src = time_prefix + '''
#if !defined(_POSIX_MONOTONIC_CLOCK) || _POSIX_MONOTONIC_CLOCK < 0 || !defined(CLOCK_MONOTONIC)
#error Either _POSIX_MONOTONIC_CLOCK or CLOCK_MONOTONIC not defined
#endif
'''
if cc.compiles(monotonic_clock_src, name : 'monotonic clock from time.h')
cdata.set('HAVE_MONOTONIC_CLOCK', 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')
cdata.set('HAVE_UINT128_T', 1)
endif
# All supported platforms have long long now
cdata.set('HAVE_LONG_LONG', 1)
# We only want to use the __declspec(dllexport/import) dance in GST_EXPORT when
# building with MSVC
if cc.get_id() == 'msvc'
cdata.set('GSTCONFIG_BUILT_WITH_MSVC', 1)
else
cdata.set('GSTCONFIG_BUILT_WITH_MSVC', 0)
endif
# -------------------------------------------------------------------------------------
# config.h things needed by libcheck
# -------------------------------------------------------------------------------------
if cc.has_function('getpid')
cdata.set('HAVE_GETPID', 1)
elif host_system == 'windows' and cc.has_function('_getpid')
cdata.set('HAVE_PROCESS_H', 1) # Used by gstreamer too
cdata.set('HAVE__GETPID', 1)
endif
if cc.has_function('strdup')
cdata.set('HAVE_DECL_STRDUP', 1)
elif host_system == 'windows' and cc.has_function('_strdup')
cdata.set('HAVE__STRDUP', 1) # Windows (MSVC)
endif
if host_system != 'windows'
cdata.set('HAVE_FORK', 1)
else
# libcheck requires HAVE_FORK to be 0 when fork() is not available
cdata.set('HAVE_FORK', 0)
endif
if cc.has_function('strsignal')
cdata.set('HAVE_DECL_STRSIGNAL', 1)
endif
# Check for availability of types
if not cc.has_type('clockid_t', prefix : '#include <time.h>')
cdata.set('clockid_t', 'int')
endif
if not cc.has_type('timer_t', prefix : '#include <time.h>')
cdata.set('timer_t', 'int')
endif
if not cc.has_members('struct timespec', 'tv_sec', 'tv_nsec',
prefix : '#include <time.h>')
cdata.set('STRUCT_TIMESPEC_DEFINITION_MISSING', 1)
endif
if not cc.has_members('struct itimerspec', 'it_interval', 'it_value',
prefix : '#include <time.h>')
cdata.set('STRUCT_ITIMERSPEC_DEFINITION_MISSING', 1)
endif
# Platform deps; only ws2_32 and execinfo for now
platform_deps = []
if host_system == 'windows'
platform_deps = [cc.find_library('ws2_32')]
endif
backtrace_deps = []
unwind_dep = dependency('libunwind', required : get_option('libunwind'))
dw_dep = dependency('libdw', required: get_option('libunwind'))
backtrace_deps = [unwind_dep, dw_dep]
if unwind_dep.found()
cdata.set('HAVE_UNWIND', 1)
if dw_dep.found()
cdata.set('HAVE_DW', 1)
else
message('Support for backtraces is partial only.')
endif
else
if cc.has_function('backtrace')
cdata.set('HAVE_BACKTRACE', 1)
else
message('NO backtraces support.')
endif
endif
if cc.has_header('execinfo.h')
if cc.has_function('backtrace', prefix : '#include <execinfo.h>')
cdata.set('HAVE_BACKTRACE', 1)
else
execinfo_dep = cc.find_library('execinfo', required : false)
if execinfo_dep.found() and cc.has_function('backtrace', prefix : '#include <execinfo.h>', dependencies : execinfo_dep)
cdata.set('HAVE_BACKTRACE', 1)
platform_deps += execinfo_dep
endif
endif
endif
gst_debug = get_option('gst_debug')
if not gst_debug
add_project_arguments(['-Wno-unused'], language: 'c')
endif
warning_flags = [
'-Wmissing-declarations',
'-Wmissing-prototypes',
'-Wredundant-decls',
'-Wundef',
'-Wwrite-strings',
'-Wformat',
'-Wformat-nonliteral',
'-Wformat-security',
'-Wold-style-definition',
'-Winit-self',
'-Wmissing-include-dirs',
'-Waddress',
'-Waggregate-return',
'-Wno-multichar',
'-Wnested-externs',
'-Wdeclaration-after-statement',
'-Wvla',
'-Wpointer-arith',
]
foreach extra_arg : warning_flags
if cc.has_argument (extra_arg)
add_project_arguments([extra_arg], language: 'c')
endif
endforeach
# Used by the gstutils test
gmp_dep = cc.find_library('gmp', required : false)
cdata.set('HAVE_GMP', gmp_dep.found())
gsl_dep = cc.find_library('gsl', required : false)
gslcblas_dep = cc.find_library('gslcblas', required : false)
cdata.set('HAVE_GSL', gsl_dep.found() and gslcblas_dep.found())
test_deps = [gmp_dep, gsl_dep, gslcblas_dep]
# Used by gstinfo.c
dl_dep = cc.find_library('dl', required : false)
cdata.set('HAVE_DLADDR', cc.has_function('dladdr', dependencies : dl_dep))
cdata.set('GST_ENABLE_EXTRA_CHECKS', get_option('extra-checks'))
cdata.set('USE_POISONING', get_option('poisoning'))
configinc = include_directories('.')
libsinc = include_directories('libs')
privinc = include_directories('gst')
# Find dependencies
glib_dep = dependency('glib-2.0', version : '>=2.32.0',
fallback: ['glib', 'libglib_dep'])
gobject_dep = dependency('gobject-2.0',
fallback: ['glib', 'libgobject_dep'])
gmodule_dep = dependency('gmodule-2.0',
fallback: ['glib', 'libgmodule_dep'])
if host_system == 'windows'
gio_dep = dependency('gio-2.0',
fallback: ['glib', 'libgio_dep'])
else
gio_dep = [dependency('gio-2.0',
fallback: ['glib', 'libgio_dep']),
dependency('gio-unix-2.0',
fallback: ['glib', 'libgio_dep'])]
endif
mathlib = cc.find_library('m', required : false)
# Needed for timer_create/settime/delete
# Also provides clock_gettime in glibc < 2.17
rt_lib = cc.find_library('rt', required : false)
gir = find_program('g-ir-scanner', required : get_option('introspection'))
gnome = import('gnome')
build_gir = gir.found() and not meson.is_cross_build()
gir_init_section = [ '--add-init-section=extern void gst_init(gint*,gchar**);' + \
'g_setenv("GST_REGISTRY_DISABLE", "yes", TRUE);' + \
'g_setenv("GST_REGISTRY_1.0", "/no/way/this/exists.reg", TRUE);' + \
'g_setenv("GST_PLUGIN_PATH_1_0", "", TRUE);' + \
'g_setenv("GST_PLUGIN_SYSTEM_PATH_1_0", "", TRUE);' + \
'gst_init(NULL,NULL);' ]
gst_c_args = ['-DHAVE_CONFIG_H']
# FIXME: This is only needed on windows and probably breaks when
# default_library = 'both'. We should add this flag to static_c_args instead
# when Meson supports it: https://github.com/mesonbuild/meson/issues/3304
if get_option('default_library') == 'static'
gst_c_args += ['-DGST_STATIC_COMPILATION']
endif
# Used in gst/parse/meson.build and below
python3 = import('python3').find_python()
bashcomp_option = get_option('bash-completion')
bashcomp_dep = dependency('bash-completion', version : '>= 2.0', required : bashcomp_option)
bash_completions_dir = ''
bash_helpers_dir = ''
bashcomp_found = false
if bashcomp_dep.found()
bashcomp_found = true
bash_completions_dir = bashcomp_dep.get_pkgconfig_variable('completionsdir', define_variable: ['prefix', '.'])
if bash_completions_dir == ''
msg = 'Found bash-completion but the .pc file did not set \'completionsdir\'.'
if bashcomp_option.enabled()
error(msg)
else
message(msg)
endif
bashcomp_found = false
endif
bash_helpers_dir = bashcomp_dep.get_pkgconfig_variable('helpersdir', define_variable: ['prefix', '.'])
if bash_helpers_dir == ''
msg = 'Found bash-completion, but the .pc file did not set \'helpersdir\'.'
if bashcomp_option.enabled()
error(msg)
else
message(msg)
endif
bashcomp_found = false
endif
endif
subdir('gst')
subdir('libs')
subdir('plugins')
if not get_option('tools').disabled()
subdir('tools')
endif
subdir('pkgconfig')
subdir('tests')
subdir('data')
# xgettext is optional (on Windows for instance)
if find_program('xgettext', required : get_option('nls')).found()
cdata.set('ENABLE_NLS', 1)
subdir('po')
endif
configure_file(output : 'config.h', configuration : cdata)
if build_machine.system() == 'windows'
message('Disabling gtk-doc while building on Windows')
else
if find_program('gtkdoc-scan', required : get_option('gtk_doc')).found()
subdir('docs')
else
message('Not building documentation as gtk-doc was not found')
endif
endif
run_command(python3, '-c', 'import shutil; shutil.copy("hooks/pre-commit.hook", ".git/hooks/pre-commit")')
install_data('gst-element-check-1.0.m4', install_dir : join_paths(get_option('datadir'), 'aclocal'))
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