ref: efd9e5518e0ed5114f8b4579debd7ee6dbede21f
dir: /meson.build/
# Copyright © 2018-2019, 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: '0.6.0',
default_options: ['c_std=c99',
'warning_level=2',
'buildtype=release',
'b_ndebug=if-release'],
meson_version: '>= 0.47.0')
dav1d_soname_version = '4.0.0'
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().startswith('x86') or
host_machine.cpu_family() == 'aarch64' or
host_machine.cpu_family().startswith('arm') or
host_machine.cpu() == 'ppc64le'))
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
# Logging option
cdata.set10('CONFIG_LOG', get_option('logging'))
#
# OS/Compiler checks and defines
#
# Arguments in test_args will be used even on feature tests
test_args = []
optional_arguments = []
if host_machine.system() == 'linux'
test_args += '-D_GNU_SOURCE'
add_project_arguments('-D_GNU_SOURCE', language: 'c')
elif host_machine.system() == 'darwin'
test_args += '-D_DARWIN_C_SOURCE'
add_project_arguments('-D_DARWIN_C_SOURCE', language: 'c')
else
test_args += '-D_POSIX_C_SOURCE=200112L'
add_project_arguments('-D_POSIX_C_SOURCE=200112L', 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' and cc.get_id() == 'gcc')
optional_arguments += '-mcmodel=small'
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 = []
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() != 'darwin'
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
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
# Header checks
stdatomic_dependency = []
if not cc.check_header('stdatomic.h')
if cc.get_id() == 'msvc'
# we have a custom replacement for MSVC
stdatomic_dependency = 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_dependency = declare_dependency(
include_directories : include_directories('include/compat/gcc'),
)
else
error('Atomics not supported')
endif
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
# 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 cc.has_function('posix_memalign', prefix : '#include <stdlib.h>', args : test_args)
cdata.set('HAVE_POSIX_MEMALIGN', 1)
elif cc.has_function('_aligned_malloc', prefix : '#include <malloc.h>', args : test_args)
cdata.set('HAVE_ALIGNED_MALLOC', 1)
elif cc.has_function('memalign', prefix : '#include <malloc.h>', args : test_args)
cdata.set('HAVE_MEMALIGN', 1)
endif
if (host_machine.cpu_family() == 'aarch64' or
host_machine.cpu_family().startswith('arm') or
host_machine.cpu() == 'ppc64le')
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
# 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_id() != 'msvc'
optional_arguments += [
'-Wundef',
'-Werror=vla',
'-Wno-maybe-uninitialized',
'-Wno-missing-field-initializers',
'-Wno-unused-parameter',
'-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
'-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() == 'darwin' 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
add_project_arguments(cc.get_supported_arguments(optional_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
# Stack alignments flags
stackalign_flag = []
stackrealign_flag = []
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'
if cc.has_argument('-mpreferred-stack-boundary=6')
stackalign_flag = ['-mpreferred-stack-boundary=6']
stackrealign_flag = ['-mincoming-stack-boundary=4']
stack_alignment = 32
elif cc.has_argument('-mstack-alignment=64')
stackalign_flag = ['-mstack-alignment=64']
stackrealign_flag = ['-mstackrealign']
stack_alignment = 32
else
stack_alignment = 16
endif
else
if host_machine.system() == 'linux' or host_machine.system() == 'darwin'
stack_alignment = 16
elif cc.has_argument('-mpreferred-stack-boundary=4')
stackalign_flag = ['-mpreferred-stack-boundary=4']
stackrealign_flag = ['-mincoming-stack-boundary=2']
stack_alignment = 16
elif cc.has_argument('-mstack-alignment=16')
stackalign_flag = ['-mstack-alignment=16']
stackrealign_flag = ['-mstackrealign']
stack_alignment = 16
else
stack_alignment = 4
endif
endif
cdata_asm.set('STACK_ALIGNMENT', stack_alignment)
cdata.set('STACK_ALIGNMENT', stack_alignment)
endif
cdata.set10('ARCH_AARCH64', host_machine.cpu_family() == 'aarch64')
cdata.set10('ARCH_ARM', host_machine.cpu_family().startswith('arm'))
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
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.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)
endif
cdata.set10('ARCH_PPC64LE', host_machine.cpu() == 'ppc64le')
if cc.symbols_have_underscore_prefix()
cdata.set10('PREFIX', true)
cdata_asm.set10('PREFIX', true)
endif
# Generate config.h
config_h_target = configure_file(output: 'config.h', configuration: cdata)
#
# ASM specific stuff
#
if is_asm_enabled and host_machine.cpu_family().startswith('x86')
# Generate config.asm
config_asm_target = configure_file(output: 'config.asm', output_format: 'nasm', configuration: cdata_asm)
# NASM compiler support
nasm = find_program('nasm')
# check NASM version
if nasm.found()
nasm_r = run_command(nasm, '-v')
if nasm_r.returncode() != 0
error('failed running nasm to obtain its version')
endif
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
if host_machine.system() == 'windows'
nasm_format = 'win'
elif host_machine.system() == 'darwin'
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(meson.current_source_dir()),
'-I', '@0@/'.format(meson.current_build_dir()),
'-MQ', '@OUTPUT@', '-MF', '@DEPFILE@',
'@EXTRA_ARGS@',
'@INPUT@',
'-o', '@OUTPUT@'
])
endif
#
# Include subdir meson.build files
# The order is important!
subdir('include')
subdir('doc')
subdir('src')
subdir('tools')
subdir('examples')
subdir('tests')