Add buildsystem skeleton

1 files changed, 142 insertions, 0 deletions

diff --git a/meson.build b/meson.build
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+# Copyright © 2018, 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: '0.0.1',
+    default_options: ['c_std=c11'],
+    meson_version: '>= 0.47.0')
+
+dav1d_src_root = meson.current_source_dir()
+cdata = configuration_data()
+cc = meson.get_compiler('c')
+
+if not meson.is_cross_build() 
+    thread_dependency = dependency('threads')
+else
+    thread_dependency = cc.find_library('pthread')
+endif
+
+dav1d_inc_dirs = include_directories('include')
+
+#
+# OS/Compiler feature detection
+#
+
+feature_defines = [
+    ['_REENTRANT',                  1], # Define so that reentrant versions of several functions get declared
+    ['_THREAD_SAFE',                1], # Same as _REENTANT for some other OSes
+    ['_GNU_SOURCE',                 1], # Enable GNU extensions on systems that have them
+    ['_POSIX_PTHREAD_SEMANTICS',    1], # Enable threading extensions on Solaris
+    ['__EXTENSIONS__',              1], # Enable general extensions on Solaris
+    ['_FILE_OFFSET_BITS',           64], # Define to 64 for large files support
+]
+
+if host_machine.system() == 'windows'
+    feature_defines += [
+            ['_WIN32_WINNT',                0x0601],
+            ['UNICODE',                     1], # Define to 1 for Unicode (Wide Chars) APIs
+            ['_UNICODE',                    1], # Define to 1 for Unicode (Wide Chars) APIs
+            ['__USE_MINGW_ANSI_STDIO',      1], # Define to force use of MinGW printf
+            ['_ISOC99_SOURCE',              1], # Extensions to ISO C89 from ISO C99
+            ['_ISOC11_SOURCE',              1], # Extensions to ISO C99 from ISO C11
+            ['_POSIX_SOURCE',               1], # IEEE Std 1003.1
+            ['_POSIX_C_SOURCE',             '200809L'], #IEEE Std 1003.1
+            ['_XOPEN_SOURCE',               700], # POSIX and XPG 7th edition
+            ['_XOPEN_SOURCE_EXTENDED',      1], # XPG things and X/Open Unix extensions
+            ['_BSD_SOURCE',                 1], # ISO C, POSIX, and 4.3BSD things
+            ['_SVID_SOURCE',                1], # ISO C, POSIX, and SVID things
+    ]
+endif
+
+if not cc.check_header('stdatomic.h')
+    error('Atomics not supported')
+endif
+
+if cc.has_argument('-mpreferred-stack-boundary=5')
+    stackalign_flag = '-mpreferred-stack-boundary=5'
+    stackrealign_flag = '-mincoming-stack-boundary=4'
+# When cross compiling for win64 gcc refuses to use -mpreferred-stack-boundary
+# with a value which isn't 3 or 4. However, when cross compiling with clang, 5 is
+# accepted.
+elif (host_machine.system() == 'windows' and host_machine.cpu_family() == 'x86_64'
+and cc.has_argument('-mpreferred-stack-boundary=4'))
+    stackalign_flag = '-mpreferred-stack-boundary=4'
+    stackrealign_flag = '-mincoming-stack-boundary=4'
+elif cc.has_argument('-mstack-alignment=32')
+    stackalign_flag = '-mstack-alignment=32'
+    stackrealign_flag = '-mstackrealign'
+else
+    error('Failed to specify stack alignment')
+endif
+
+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
+
+if cc.has_function('posix_memalign', prefix: '#include <stdlib.h>', args: ['-D_POSIX_C_SOURCE=200112'])
+    feature_defines += [['POSIX_C_SOURCE', 200112]]
+    cdata.set('HAVE_POSIX_MEMALIGN', 1)
+elif cc.has_function('_aligned_malloc', prefix: '#include <malloc.h>')
+    cdata.set('HAVE_ALIGNED_MALLOC', 1)
+endif
+
+add_project_arguments('-fomit-frame-pointer', '-ffast-math',
+    language: 'c')
+
+add_project_arguments('-Wall', '-Wundef',
+    language: 'c')
+
+foreach f : feature_defines
+   cdata.set(f.get(0), f.get(1))
+endforeach
+
+#
+# Generate config headers
+#
+
+config_h_target = configure_file(output: 'config.h', configuration: cdata)
+
+subdir('include')
+
+libdav1d = library('dav1d',
+    rev_target,
+    version: '0.0.1',
+    include_directories: dav1d_inc_dirs,
+    c_args: [stackalign_flag],
+    dependencies: thread_dependency,
+    install: true
+)
+
+#
+# pkg-config boilerplate
+#
+pkg_mod = import('pkgconfig')
+pkg_mod.generate(libraries: libdav1d,
+    version: '0.0.1',
+    name: 'libdav1d',
+    filebase: 'dav1d',
+    description: 'AV1 decoding library'
+)