Source code

Revision control

Copy as Markdown

Other Tools

# Copyright © 2018-2022, VideoLAN and dav1d authors
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
project('dav1d', ['c'],
version: '1.4.2',
default_options: ['c_std=c99',
'warning_level=2',
'buildtype=release',
'b_ndebug=if-release'],
meson_version: '>= 0.49.0')
dav1d_soname_version = '7.0.0'
dav1d_api_version_array = dav1d_soname_version.split('.')
dav1d_api_version_major = dav1d_api_version_array[0]
dav1d_api_version_minor = dav1d_api_version_array[1]
dav1d_api_version_revision = dav1d_api_version_array[2]
dav1d_src_root = meson.current_source_dir()
cc = meson.get_compiler('c')
# Configuratin data for config.h
cdata = configuration_data()
# Configuration data for config.asm
cdata_asm = configuration_data()
# Include directories
dav1d_inc_dirs = include_directories(['.', 'include/dav1d', 'include'])
#
# Option handling
#
# Bitdepth option
dav1d_bitdepths = get_option('bitdepths')
foreach bitdepth : ['8', '16']
cdata.set10('CONFIG_@0@BPC'.format(bitdepth), dav1d_bitdepths.contains(bitdepth))
endforeach
# ASM option
is_asm_enabled = (get_option('enable_asm') == true and
(host_machine.cpu_family() == 'aarch64' or
host_machine.cpu_family().startswith('arm') or
host_machine.cpu() == 'ppc64le' or
host_machine.cpu_family().startswith('riscv') or
host_machine.cpu_family().startswith('loongarch') or
host_machine.cpu_family() == 'x86' or
(host_machine.cpu_family() == 'x86_64' and cc.get_define('__ILP32__').strip() == '')))
cdata.set10('HAVE_ASM', is_asm_enabled)
if is_asm_enabled and get_option('b_sanitize') == 'memory'
error('asm causes false positive with memory sanitizer. Use \'-Denable_asm=false\'.')
endif
cdata.set10('TRIM_DSP_FUNCTIONS', get_option('trim_dsp') == 'true' or
(get_option('trim_dsp') == 'if-release' and get_option('buildtype') == 'release'))
# Logging option
cdata.set10('CONFIG_LOG', get_option('logging'))
cdata.set10('CONFIG_MACOS_KPERF', get_option('macos_kperf'))
#
# OS/Compiler checks and defines
#
# Arguments in test_args will be used even on feature tests
test_args = []
optional_arguments = []
optional_link_arguments = []
if host_machine.system() in ['linux', 'gnu', 'emscripten']
test_args += '-D_GNU_SOURCE'
add_project_arguments('-D_GNU_SOURCE', language: 'c')
endif
if host_machine.system() == 'windows'
cdata.set('_WIN32_WINNT', '0x0601')
cdata.set('UNICODE', 1) # Define to 1 for Unicode (Wide Chars) APIs
cdata.set('_UNICODE', 1) # Define to 1 for Unicode (Wide Chars) APIs
cdata.set('__USE_MINGW_ANSI_STDIO', 1) # Define to force use of MinGW printf
cdata.set('_CRT_DECLARE_NONSTDC_NAMES', 1) # Define to get off_t from sys/types.h on MSVC
if cc.has_function('fseeko', prefix : '#include <stdio.h>', args : test_args)
cdata.set('_FILE_OFFSET_BITS', 64) # Not set by default by Meson on Windows
else
cdata.set('fseeko', '_fseeki64')
cdata.set('ftello', '_ftelli64')
endif
if host_machine.cpu_family() == 'x86_64'
if cc.get_argument_syntax() != 'msvc'
optional_link_arguments += '-Wl,--dynamicbase,--nxcompat,--tsaware,--high-entropy-va'
endif
elif host_machine.cpu_family() == 'x86' or host_machine.cpu_family() == 'arm'
if cc.get_argument_syntax() == 'msvc'
optional_link_arguments += '/largeaddressaware'
else
optional_link_arguments += '-Wl,--dynamicbase,--nxcompat,--tsaware,--large-address-aware'
endif
endif
# On Windows, we use a compatibility layer to emulate pthread
thread_dependency = []
thread_compat_dep = declare_dependency(sources : files('src/win32/thread.c'))
rt_dependency = []
rc_version_array = meson.project_version().split('.')
winmod = import('windows')
rc_data = configuration_data()
rc_data.set('PROJECT_VERSION_MAJOR', rc_version_array[0])
rc_data.set('PROJECT_VERSION_MINOR', rc_version_array[1])
rc_data.set('PROJECT_VERSION_REVISION', rc_version_array[2])
rc_data.set('API_VERSION_MAJOR', dav1d_api_version_major)
rc_data.set('API_VERSION_MINOR', dav1d_api_version_minor)
rc_data.set('API_VERSION_REVISION', dav1d_api_version_revision)
rc_data.set('COPYRIGHT_YEARS', '2018-2024')
else
thread_dependency = dependency('threads')
thread_compat_dep = []
rt_dependency = []
if cc.has_function('clock_gettime', prefix : '#include <time.h>', args : test_args)
cdata.set('HAVE_CLOCK_GETTIME', 1)
elif host_machine.system() not in ['darwin', 'ios', 'tvos']
rt_dependency = cc.find_library('rt', required: false)
if not cc.has_function('clock_gettime', prefix : '#include <time.h>', args : test_args, dependencies : rt_dependency)
error('clock_gettime not found')
endif
cdata.set('HAVE_CLOCK_GETTIME', 1)
endif
if cc.has_function('posix_memalign', prefix : '#include <stdlib.h>', args : test_args)
cdata.set('HAVE_POSIX_MEMALIGN', 1)
endif
endif
# check for fseeko on android. It is not always available if _FILE_OFFSET_BITS is defined to 64
have_fseeko = true
if host_machine.system() == 'android'
if not cc.has_function('fseeko', prefix : '#include <stdio.h>', args : test_args)
if cc.has_function('fseeko', prefix : '#include <stdio.h>', args : test_args + ['-U_FILE_OFFSET_BITS'])
warning('Files larger than 2 gigabytes might not be supported in the dav1d CLI tool.')
add_project_arguments('-U_FILE_OFFSET_BITS', language: 'c')
elif get_option('enable_tools')
error('dav1d CLI tool needs fseeko()')
else
have_fseeko = false
endif
endif
endif
libdl_dependency = []
if host_machine.system() == 'linux'
libdl_dependency = cc.find_library('dl', required : false)
if cc.has_function('dlsym', prefix : '#include <dlfcn.h>', args : test_args, dependencies : libdl_dependency)
cdata.set('HAVE_DLSYM', 1)
endif
endif
libm_dependency = cc.find_library('m', required: false)
# Header checks
stdatomic_dependencies = []
if not cc.check_header('stdatomic.h')
if cc.get_id() == 'msvc'
# we have a custom replacement for MSVC
stdatomic_dependencies += declare_dependency(
include_directories : include_directories('include/compat/msvc'),
)
elif cc.compiles('''int main() { int v = 0; return __atomic_fetch_add(&v, 1, __ATOMIC_SEQ_CST); }''',
name : 'GCC-style atomics', args : test_args)
stdatomic_dependencies += declare_dependency(
include_directories : include_directories('include/compat/gcc'),
)
else
error('Atomics not supported')
endif
endif
if host_machine.cpu_family().startswith('wasm')
# enable atomics + bulk-memory features
stdatomic_dependencies += thread_dependency.partial_dependency(compile_args: true)
endif
if cc.check_header('unistd.h')
cdata.set('HAVE_UNISTD_H', 1)
endif
if cc.check_header('io.h')
cdata.set('HAVE_IO_H', 1)
endif
if cc.check_header('pthread_np.h')
cdata.set('HAVE_PTHREAD_NP_H', 1)
test_args += '-DHAVE_PTHREAD_NP_H'
endif
# Function checks
if not cc.has_function('getopt_long', prefix : '#include <getopt.h>', args : test_args)
getopt_dependency = declare_dependency(
sources: files('tools/compat/getopt.c'),
include_directories : include_directories('include/compat'),
)
else
getopt_dependency = []
endif
if (host_machine.cpu_family() == 'aarch64' or
host_machine.cpu_family().startswith('arm') or
host_machine.cpu_family().startswith('loongarch') or
host_machine.cpu() == 'ppc64le' or
host_machine.cpu_family().startswith('riscv'))
if cc.has_function('getauxval', prefix : '#include <sys/auxv.h>', args : test_args)
cdata.set('HAVE_GETAUXVAL', 1)
endif
if cc.has_function('elf_aux_info', prefix : '#include <sys/auxv.h>', args : test_args)
cdata.set('HAVE_ELF_AUX_INFO', 1)
endif
endif
pthread_np_prefix = '''
#include <pthread.h>
#ifdef HAVE_PTHREAD_NP_H
#include <pthread_np.h>
#endif
'''
if cc.has_function('pthread_getaffinity_np', prefix : pthread_np_prefix, args : test_args, dependencies : thread_dependency)
cdata.set('HAVE_PTHREAD_GETAFFINITY_NP', 1)
endif
if cc.has_function('pthread_setaffinity_np', prefix : pthread_np_prefix, args : test_args, dependencies : thread_dependency)
cdata.set('HAVE_PTHREAD_SETAFFINITY_NP', 1)
endif
if cc.compiles('int x = _Generic(0, default: 0);', name: '_Generic', args: test_args)
cdata.set('HAVE_C11_GENERIC', 1)
endif
# Compiler flag tests
if cc.has_argument('-fvisibility=hidden')
add_project_arguments('-fvisibility=hidden', language: 'c')
else
warning('Compiler does not support -fvisibility=hidden, all symbols will be public!')
endif
# Compiler flags that should be set
# But when the compiler does not supports them
# it is not an error and silently tolerated
if cc.get_argument_syntax() != 'msvc'
optional_arguments += [
'-Wundef',
'-Werror=vla',
'-Wno-maybe-uninitialized',
'-Wno-missing-field-initializers',
'-Wno-unused-parameter',
'-Wstrict-prototypes',
'-Werror=missing-prototypes',
'-Wshorten-64-to-32',
]
if host_machine.cpu_family() == 'x86'
optional_arguments += [
'-msse2',
'-mfpmath=sse',
]
endif
else
optional_arguments += [
'-wd4028', # parameter different from declaration
'-wd4090', # broken with arrays of pointers
'-wd4996' # use of POSIX functions
]
endif
if (get_option('buildtype') != 'debug' and get_option('buildtype') != 'plain')
optional_arguments += '-fomit-frame-pointer'
optional_arguments += '-ffast-math'
endif
if (host_machine.system() in ['darwin', 'ios', 'tvos'] and cc.get_id() == 'clang' and
cc.version().startswith('11'))
# Workaround for Xcode 11 -fstack-check bug, see #301
optional_arguments += '-fno-stack-check'
endif
if (host_machine.cpu_family() == 'aarch64' or host_machine.cpu_family().startswith('arm'))
optional_arguments += '-fno-align-functions'
endif
add_project_arguments(cc.get_supported_arguments(optional_arguments), language : 'c')
add_project_link_arguments(cc.get_supported_link_arguments(optional_link_arguments), language : 'c')
# libFuzzer related things
fuzzing_engine = get_option('fuzzing_engine')
if fuzzing_engine == 'libfuzzer'
if not cc.has_argument('-fsanitize=fuzzer')
error('fuzzing_engine libfuzzer requires "-fsanitize=fuzzer"')
endif
fuzzer_args = ['-fsanitize=fuzzer-no-link', '-fsanitize=fuzzer']
add_project_arguments(cc.first_supported_argument(fuzzer_args), language : 'c')
endif
cdata.set10('ENDIANNESS_BIG', host_machine.endian() == 'big')
if host_machine.cpu_family().startswith('x86')
if get_option('stack_alignment') > 0
stack_alignment = get_option('stack_alignment')
elif host_machine.cpu_family() == 'x86_64' or host_machine.system() in ['linux', 'darwin', 'ios', 'tvos']
stack_alignment = 16
else
stack_alignment = 4
endif
cdata_asm.set('STACK_ALIGNMENT', stack_alignment)
endif
cdata.set10('ARCH_AARCH64', host_machine.cpu_family() == 'aarch64' or host_machine.cpu() == 'arm64')
cdata.set10('ARCH_ARM', host_machine.cpu_family().startswith('arm') and host_machine.cpu() != 'arm64')
if (is_asm_enabled and
(host_machine.cpu_family() == 'aarch64' or
host_machine.cpu_family().startswith('arm')))
as_func_code = '''__asm__ (
".func meson_test"
".endfunc"
);
'''
have_as_func = cc.compiles(as_func_code)
cdata.set10('HAVE_AS_FUNC', have_as_func)
# fedora package build infrastructure uses a gcc specs file to enable
# '-fPIE' by default. The chosen way only adds '-fPIE' to the C compiler
# with integrated preprocessor. It is not added to the standalone
# preprocessor or the preprocessing stage of '.S' files. So we have to
# compile code to check if we have to define PIC for the arm asm to
# avoid absolute relocations when building for example checkasm.
check_pic_code = '''
#if defined(PIC)
#error "PIC already defined"
#elif !(defined(__PIC__) || defined(__pic__))
#error "no pic"
#endif
'''
if cc.compiles(check_pic_code)
cdata.set('PIC', '3')
endif
if host_machine.cpu_family() == 'aarch64'
have_as_arch = cc.compiles('''__asm__ (".arch armv8-a");''')
cdata.set10('HAVE_AS_ARCH_DIRECTIVE', have_as_arch)
as_arch_str = ''
if have_as_arch
as_arch_level = 'armv8-a'
# Check what .arch levels are supported. In principle, we only
# want to detect up to armv8.2-a here (binutils requires that
# in order to enable i8mm). However, older Clang versions
# (before Clang 17, and Xcode versions up to and including 15.0)
# didn't support controlling dotprod/i8mm extensions via
# .arch_extension, therefore try to enable a high enough .arch
# level as well, to implicitly make them available via that.
foreach arch : ['armv8.2-a', 'armv8.4-a', 'armv8.6-a']
if cc.compiles('__asm__ (".arch ' + arch + '\\n");')
as_arch_level = arch
endif
endforeach
# Clang versions before 17 also had a bug
# causing a plain ".arch <level>" to not have any effect unless it
# had an extra "+<feature>" included - but it was activated on the
# next ".arch_extension" directive instead. Check if we can include
# "+crc" as dummy feature to make the .arch directive behave as
# expected and take effect right away.
if cc.compiles('__asm__ (".arch ' + as_arch_level + '+crc\\n");')
as_arch_level = as_arch_level + '+crc'
endif
cdata.set('AS_ARCH_LEVEL', as_arch_level)
as_arch_str = '".arch ' + as_arch_level + '\\n"'
endif
extensions = {
'dotprod': 'udot v0.4s, v0.16b, v0.16b',
'i8mm': 'usdot v0.4s, v0.16b, v0.16b',
'sve': 'whilelt p0.s, x0, x1',
'sve2': 'sqrdmulh z0.s, z0.s, z0.s',
}
foreach name, instr : extensions
# Test for support for the various extensions. First test if
# the assembler supports the .arch_extension directive for
# enabling/disabling the extension, then separately check whether
# the instructions themselves are supported. Even if .arch_extension
# isn't supported, we may be able to assemble the instructions
# if the .arch level includes support for them.
code = '__asm__ (' + as_arch_str
code += '".arch_extension ' + name + '\\n"'
code += ');'
supports_archext = cc.compiles(code)
cdata.set10('HAVE_AS_ARCHEXT_' + name.to_upper() + '_DIRECTIVE', supports_archext)
code = '__asm__ (' + as_arch_str
if supports_archext
code += '".arch_extension ' + name + '\\n"'
endif
code += '"' + instr + '\\n"'
code += ');'
supports_instr = cc.compiles(code, name: name.to_upper())
cdata.set10('HAVE_' + name.to_upper(), supports_instr)
endforeach
endif
endif
cdata.set10('ARCH_X86', host_machine.cpu_family().startswith('x86'))
cdata.set10('ARCH_X86_64', host_machine.cpu_family() == 'x86_64')
cdata.set10('ARCH_X86_32', host_machine.cpu_family() == 'x86')
if host_machine.cpu_family().startswith('x86')
cdata_asm.set('private_prefix', 'dav1d')
cdata_asm.set10('ARCH_X86_64', host_machine.cpu_family() == 'x86_64')
cdata_asm.set10('ARCH_X86_32', host_machine.cpu_family() == 'x86')
cdata_asm.set10('PIC', true)
# Convert SSE asm into (128-bit) AVX when compiler flags are set to use AVX instructions
cdata_asm.set10('FORCE_VEX_ENCODING', cc.get_define('__AVX__').strip() != '')
endif
cdata.set10('ARCH_PPC64LE', host_machine.cpu() == 'ppc64le')
cdata.set10('ARCH_RISCV', host_machine.cpu_family().startswith('riscv'))
cdata.set10('ARCH_RV32', host_machine.cpu_family() == 'riscv32')
cdata.set10('ARCH_RV64', host_machine.cpu_family() == 'riscv64')
cdata.set10('ARCH_LOONGARCH', host_machine.cpu_family().startswith('loongarch'))
cdata.set10('ARCH_LOONGARCH32', host_machine.cpu_family() == 'loongarch32')
cdata.set10('ARCH_LOONGARCH64', host_machine.cpu_family() == 'loongarch64')
# meson's cc.symbols_have_underscore_prefix() is unfortunately unrelieably
# when additional flags like '-fprofile-instr-generate' are passed via CFLAGS
if (host_machine.system() in ['darwin', 'ios', 'tvos'] or
(host_machine.system() == 'windows' and host_machine.cpu_family() == 'x86'))
cdata.set10('PREFIX', true)
cdata_asm.set10('PREFIX', true)
endif
#
# ASM specific stuff
#
if is_asm_enabled and host_machine.cpu_family().startswith('x86')
# NASM compiler support
nasm = find_program('nasm')
# check NASM version
if nasm.found()
nasm_r = run_command(nasm, '-v', check: true)
out = nasm_r.stdout().strip().split()
if out[1].to_lower() == 'version'
if out[2].version_compare('<2.14')
error('nasm 2.14 or later is required, found nasm @0@'.format(out[2]))
endif
else
error('unexpected nasm version string: @0@'.format(nasm_r.stdout()))
endif
endif
# Generate config.asm
config_asm_target = configure_file(output: 'config.asm', output_format: 'nasm', configuration: cdata_asm)
if host_machine.system() == 'windows'
nasm_format = 'win'
elif host_machine.system() in ['darwin', 'ios', 'tvos']
nasm_format = 'macho'
else
nasm_format = 'elf'
endif
if host_machine.cpu_family() == 'x86_64'
nasm_format += '64'
else
nasm_format += '32'
endif
nasm_gen = generator(nasm,
output: '@BASENAME@.obj',
depfile: '@BASENAME@.obj.ndep',
arguments: [
'-f', nasm_format,
'-I', '@0@/src/'.format(dav1d_src_root),
'-I', '@0@/'.format(meson.current_build_dir()),
'-MQ', '@OUTPUT@', '-MF', '@DEPFILE@',
'@EXTRA_ARGS@',
'@INPUT@',
'-o', '@OUTPUT@'
])
endif
use_gaspp = false
if (is_asm_enabled and
(host_machine.cpu_family() == 'aarch64' or
host_machine.cpu_family().startswith('arm')) and
cc.get_argument_syntax() == 'msvc' and
(cc.get_id() != 'clang-cl' or meson.version().version_compare('<0.58.0')))
gaspp = find_program('gas-preprocessor.pl')
use_gaspp = true
gaspp_gen = generator(gaspp,
output: '@BASENAME@.obj',
arguments: [
'-as-type', 'armasm',
'-arch', host_machine.cpu_family(),
'--',
host_machine.cpu_family() == 'aarch64' ? 'armasm64' : 'armasm',
'-nologo',
'-I@0@'.format(dav1d_src_root),
'-I@0@/'.format(meson.current_build_dir()),
'@INPUT@',
'-c',
'-o', '@OUTPUT@'
])
endif
if is_asm_enabled and host_machine.cpu_family().startswith('riscv')
as_option_code = '''__asm__ (
".option arch, +v\n"
"vsetivli zero, 0, e8, m1, ta, ma"
);
'''
if not cc.compiles(as_option_code, name : 'RISC-V Vector')
error('Compiler doesn\'t support \'.option arch\' asm directive. Update to binutils>=2.38 or clang>=17 or use \'-Denable_asm=false\'.')
endif
endif
# Generate config.h
config_h_target = configure_file(output: 'config.h', configuration: cdata)
#
# Include subdir meson.build files
# The order is important!
subdir('include')
subdir('doc')
subdir('src')
subdir('tools')
subdir('examples')
subdir('tests')