project('opus', 'c', version: run_command('meson/get-version.py', '--package-version', check: true).stdout().strip(), meson_version: '>=0.54.0', default_options: ['warning_level=2', 'c_std=gnu99', 'buildtype=debugoptimized']) libversion = run_command('meson/get-version.py', '--libtool-version', check: true).stdout().strip() macosversion = run_command('meson/get-version.py', '--darwin-version', check: true).stdout().strip() cc = meson.get_compiler('c') host_system = host_machine.system() host_cpu_family = host_machine.cpu_family() top_srcdir = meson.current_source_dir() top_builddir = meson.current_build_dir() opus_includes = include_directories('.', 'include', 'celt', 'silk') opus_public_includes = include_directories('include') add_project_arguments('-DOPUS_BUILD', language: 'c') add_project_arguments('-DHAVE_CONFIG_H', language: 'c') if host_system == 'windows' if cc.get_argument_syntax() == 'msvc' add_project_arguments('-D_CRT_SECURE_NO_WARNINGS', language: 'c') endif endif if cc.get_argument_syntax() == 'gnu' add_project_arguments('-D_FORTIFY_SOURCE=2', language: 'c') endif # Check for extra compiler args additional_c_args = [] if cc.get_argument_syntax() != 'msvc' additional_c_args += [ '-fvisibility=hidden', '-Wcast-align', '-Wnested-externs', '-Wshadow', '-Wstrict-prototypes', ] # On Windows, -fstack-protector-strong adds a libssp-0.dll dependency and # prevents static linking if host_system != 'windows' additional_c_args += ['-fstack-protector-strong'] endif endif foreach arg : additional_c_args if cc.has_argument(arg) add_project_arguments(arg, language: 'c') endif endforeach # Windows MSVC warnings if cc.get_id() == 'msvc' # Ignore several spurious warnings. # 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 add_project_arguments('/wd4035', '/wd4715', '/wd4116', '/wd4046', '/wd4068', '/wd4820', '/wd4244', '/wd4255', '/wd4668', language : 'c') endif opus_version = meson.project_version() opus_conf = configuration_data() opus_conf.set('PACKAGE_BUGREPORT', '"opus@xiph.org"') opus_conf.set('PACKAGE_NAME', '"opus"') opus_conf.set('PACKAGE_STRING', '"opus @0@"'.format(opus_version)) opus_conf.set('PACKAGE_TARNAME', '"opus"') opus_conf.set('PACKAGE_URL', '""') opus_conf.set('PACKAGE_VERSION', '"@0@"'.format(opus_version)) # FIXME: optional Ne10 dependency have_arm_ne10 = false libm = cc.find_library('m', required : false) opus_conf.set('HAVE_LRINTF', cc.has_function('lrintf', prefix: '#include ', dependencies: libm)) opus_conf.set('HAVE_LRINT', cc.has_function('lrint', prefix: '#include ', dependencies: libm)) opus_conf.set('HAVE___MALLOC_HOOK', cc.has_function('__malloc_hook', prefix: '#include ')) opus_conf.set('HAVE_STDINT_H', cc.check_header('stdint.h')) # Check for restrict keyword restrict_tmpl = ''' typedef int * int_ptr; int foo (int_ptr @0@ ip, int * @0@ baz[]) { return ip[0]; } int main (int argc, char ** argv) { int s[1]; int * @0@ t = s; t[0] = 0; return foo(t, (void *)0); }''' # Define restrict to the equivalent of the C99 restrict keyword, or to # nothing if this is not supported. Do not define if restrict is # supported directly. if not cc.compiles(restrict_tmpl.format('restrict'), name : 'restrict keyword') if cc.compiles(restrict_tmpl.format('__restrict'), name : '__restrict') opus_conf.set('restrict', '__restrict') elif cc.compiles(restrict_tmpl.format('__restrict__'), name : '__restrict__') opus_conf.set('restrict', '__restrict') elif cc.compiles(restrict_tmpl.format('_Restrict'), name : '_Restrict') opus_conf.set('restrict', '_Restrict') else opus_conf.set('restrict', '/**/') endif endif # Check for C99 variable-size arrays, or alloca() as fallback msg_use_alloca = false if cc.compiles('''static int x; char some_func (void) { char a[++x]; a[sizeof a - 1] = 0; int N; return a[0]; }''', name : 'C99 variable-size arrays') opus_conf.set('VAR_ARRAYS', 1) msg_use_alloca = 'NO (using C99 variable-size arrays instead)' elif cc.compiles('''#include void some_func (void) { int foo=10; int * array = alloca(foo); }''', name : 'alloca (alloca.h)') opus_conf.set('USE_ALLOCA', true) opus_conf.set('HAVE_ALLOCA_H', true) msg_use_alloca = true elif cc.compiles('''#include #include void some_func (void) { int foo=10; int * array = alloca(foo); }''', name : 'alloca (std)') opus_conf.set('USE_ALLOCA', true) msg_use_alloca = true endif opts = [ [ 'fixed-point', 'FIXED_POINT' ], [ 'fixed-point-debug', 'FIXED_DEBUG' ], [ 'custom-modes', 'CUSTOM_MODES' ], [ 'float-approx', 'FLOAT_APPROX' ], [ 'assertions', 'ENABLE_ASSERTIONS' ], [ 'hardening', 'ENABLE_HARDENING' ], [ 'fuzzing', 'FUZZING' ], [ 'check-asm', 'OPUS_CHECK_ASM' ], ] foreach opt : opts # we assume these are all boolean options opt_foo = get_option(opt[0]) if opt_foo opus_conf.set(opt[1], 1) endif set_variable('opt_' + opt[0].underscorify(), opt_foo) endforeach opt_asm = get_option('asm') opt_rtcd = get_option('rtcd') opt_intrinsics = get_option('intrinsics') extra_programs = get_option('extra-programs') opt_tests = get_option('tests') disable_float_api = not get_option('float-api') if disable_float_api opus_conf.set('DISABLE_FLOAT_API', 1) endif # This is for the description in the pkg-config .pc file if opt_fixed_point pc_build = 'fixed-point' else pc_build = 'floating-point' endif if opt_custom_modes pc_build = pc_build + ', custom modes' endif rtcd_support = [] # With GCC, Clang, ICC, etc, we differentiate between 'may support this SIMD' # and 'presume we have this SIMD' by checking whether the SIMD / intrinsics can # be compiled by the compiler as-is (presume) or with SIMD cflags (may have). # With MSVC, the compiler will always build SIMD/intrinsics targeting all # specific instruction sets supported by that version of the compiler. No # special arguments are ever needed. If runtime CPU detection is not disabled, # we must always assume that we only 'may have' it. opus_can_presume_simd = true if cc.get_argument_syntax() == 'msvc' if opt_rtcd.disabled() warning('Building with an MSVC-like compiler and runtime CPU detection is disabled. Outputs may not run on all @0@ CPUs.'.format(host_cpu_family)) else opus_can_presume_simd = false endif endif opus_arm_external_asm = false asm_tmpl = ''' int main (int argc, char ** argv) { __asm__("@0@"); return 0; }''' asm_optimization = [] inline_optimization = [] if not opt_asm.disabled() # Currently we only have inline asm for fixed-point if host_cpu_family == 'arm' and opt_fixed_point opus_conf.set('OPUS_ARM_ASM', true) # Check if compiler supports gcc-style inline assembly if cc.compiles('''#ifdef __GNUC_MINOR__ #if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004 #error GCC before 3.4 has critical bugs compiling inline assembly #endif #endif __asm__ (""::)''', name : 'compiler supports gcc-style inline assembly') opus_conf.set('OPUS_ARM_INLINE_ASM', 1) # AS_ASM_ARM_EDSP if cc.compiles(asm_tmpl.format('qadd r3,r3,r3'), name : 'assembler supports EDSP instructions on ARM') opus_conf.set('OPUS_ARM_INLINE_EDSP', 1) inline_optimization += ['ESDP'] endif # AS_ASM_ARM_MEDIA if cc.compiles(asm_tmpl.format('shadd8 r3,r3,r3'), name : 'assembler supports ARMv6 media instructions on ARM') opus_conf.set('OPUS_ARM_INLINE_MEDIA', 1) inline_optimization += ['Media'] endif # AS_ASM_ARM_NEON if cc.compiles(asm_tmpl.format('vorr d0,d0,d0'), name : 'assembler supports NEON instructions on ARM') opus_conf.set('OPUS_ARM_INLINE_NEON', 1) inline_optimization += ['NEON'] endif endif # We need Perl to translate RVCT-syntax asm to gas syntax perl = find_program('perl', required: get_option('asm')) if perl.found() opus_arm_external_asm = true # opus_arm_presume_* mean we can and will use those instructions # directly without doing runtime CPU detection. # opus_arm_may_have_* mean we can emit those instructions, but we can # only use them after runtime detection. # The same rules apply for x86 assembly and intrinsics. opus_arm_may_have_edsp = opus_conf.has('OPUS_ARM_INLINE_EDSP') opus_arm_presume_edsp = opus_arm_may_have_edsp and opus_can_presume_simd opus_arm_may_have_media = opus_conf.has('OPUS_ARM_INLINE_MEDIA') opus_arm_presume_media = opus_arm_may_have_media and opus_can_presume_simd opus_arm_may_have_neon = opus_conf.has('OPUS_ARM_INLINE_NEON') opus_arm_presume_neon = opus_arm_may_have_neon and opus_can_presume_simd if not opt_rtcd.disabled() if not opus_arm_may_have_edsp message('Trying to force-enable armv5e EDSP instructions...') # AS_ASM_ARM_EDSP_FORCE opus_arm_may_have_edsp = cc.compiles(asm_tmpl.format('.arch armv5te\n.object_arch armv4t\nqadd r3,r3,r3'), name : 'Assembler supports EDSP instructions on ARM (forced)') endif if not opus_arm_may_have_media message('Trying to force-enable ARMv6 media instructions...') opus_arm_may_have_media = cc.compiles(asm_tmpl.format('.arch armv6\n.object_arch armv4t\nshadd8 r3,r3,r3'), name : 'Assembler supports ARMv6 media instructions on ARM (forced)') endif if not opus_arm_may_have_neon message('Trying to force-enable NEON instructions...') opus_arm_may_have_neon = cc.compiles(asm_tmpl.format('.arch armv7-a\n.fpu neon\n.object_arch armv4t\nvorr d0,d0,d0'), name : 'Assembler supports NEON instructions on ARM (forced)') endif endif if opus_arm_may_have_edsp opus_conf.set('OPUS_ARM_MAY_HAVE_EDSP', 1) if opus_arm_presume_edsp opus_conf.set('OPUS_ARM_PRESUME_EDSP', 1) asm_optimization += ['EDSP'] else rtcd_support += ['EDSP'] endif endif if opus_arm_may_have_media opus_conf.set('OPUS_ARM_MAY_HAVE_MEDIA', 1) if opus_arm_presume_media opus_conf.set('OPUS_ARM_PRESUME_MEDIA', 1) asm_optimization += ['Media'] else rtcd_support += ['Media'] endif endif if opus_arm_may_have_neon opus_conf.set('OPUS_ARM_MAY_HAVE_NEON', 1) if opus_arm_presume_neon opus_conf.set('OPUS_ARM_PRESUME_NEON', 1) asm_optimization += ['NEON'] else rtcd_support += ['NEON'] endif endif if cc.get_define('__APPLE__') arm2gnu_args = ['--apple'] else arm2gnu_args = [] endif endif # found perl else # arm + enable fixed point if opt_asm.enabled() error('asm option is enabled, but no assembly support for ' + host_cpu_family) endif endif endif # enable asm # Check whether we require assembly and we support assembly on this arch, # but none were detected. Can happen because of incorrect compiler flags, such # as missing -mfloat-abi=softfp on ARM32 softfp architectures. if opt_asm.enabled() and (asm_optimization.length() + inline_optimization.length()) == 0 error('asm option was enabled, but no assembly support was detected') endif # XXX: NEON has hardfp vs softfp compiler configuration issues # When targeting ARM32 softfp, we sometimes need to explicitly pass # -mfloat-abi=softfp to enable NEON. F.ex., on Android. It should # be set in the cross file. arm_neon_intr_link_args = ['-mfpu=neon'] have_sse = false have_sse2 = false have_sse4_1 = false have_avx = false # no avx opus code yet have_neon_intr = false intrinsics_support = [] if not opt_intrinsics.disabled() if host_cpu_family in ['arm', 'aarch64'] # Check for ARMv7/AArch64 neon intrinsics intrin_check = ''' #include int main (void) { static float32x4_t A0, A1, SUMM; SUMM = vmlaq_f32(SUMM, A0, A1); return (int)vgetq_lane_f32(SUMM, 0); }''' intrin_name = 'ARMv7/AArch64 NEON' if cc.links(intrin_check, name: 'compiler supports @0@ intrinsics'.format(intrin_name)) opus_arm_presume_neon_intr = opus_can_presume_simd opus_arm_may_have_neon_intr = true else opus_arm_presume_neon_intr = false if cc.links(intrin_check, args: arm_neon_intr_link_args, name: 'compiler supports @0@ intrinsics with @1@'.format(intrin_name, ' '.join(arm_neon_intr_link_args))) opus_arm_may_have_neon_intr = true else opus_arm_may_have_neon_intr = false endif endif if opus_arm_may_have_neon_intr have_neon_intr = true intrinsics_support += [intrin_name] opus_conf.set('OPUS_ARM_MAY_HAVE_NEON_INTR', 1) if opus_arm_presume_neon_intr opus_conf.set('OPUS_ARM_PRESUME_NEON_INTR', 1) else rtcd_support += [intrin_name] opus_neon_intr_args = arm_neon_intr_link_args endif else message('Compiler does not support @0@ intrinsics'.format(intrin_name)) endif # Check for aarch64 neon intrinsics intrin_check = ''' #include int main (void) { static int32_t IN; static int16_t OUT; OUT = vqmovns_s32(IN); }''' intrin_name = 'AArch64 NEON' if cc.links(intrin_check, name: 'compiler supports @0@ intrinsics'.format(intrin_name)) opus_arm_presume_aarch64_neon_intr = opus_can_presume_simd opus_arm_may_have_aarch64_neon_intr = true else opus_arm_presume_aarch64_neon_intr = false if cc.links(intrin_check, args: arm_neon_intr_link_args, name: 'compiler supports @0@ intrinsics with @1@'.format(intrin_name, ' '.join(arm_neon_intr_link_args))) opus_arm_may_have_aarch64_neon_intr = true else opus_arm_may_have_aarch64_neon_intr = false endif endif if opus_arm_may_have_aarch64_neon_intr intrinsics_support += [intrin_name] opus_conf.set('OPUS_X86_MAY_HAVE_AARCH64_NEON_INTR', 1) if opus_arm_presume_aarch64_neon_intr opus_conf.set('OPUS_X86_PRESUME_AARCH64_NEON_INTR', 1) endif else message('Compiler does not support @0@ intrinsics'.format(intrin_name)) endif elif host_cpu_family in ['x86', 'x86_64'] # XXX: allow external override/specification of the flags x86_intrinsics = [ [ 'SSE', 'xmmintrin.h', '__m128', '_mm_setzero_ps()', ['-msse'] ], [ 'SSE2', 'emmintrin.h', '__m128i', '_mm_setzero_si128()', ['-msse2'] ], [ 'SSE4.1', 'smmintrin.h', '__m128i', '_mm_setzero_si128(); mtest = _mm_cmpeq_epi64(mtest, mtest)', ['-msse4.1'] ], [ 'AVX', 'immintrin.h', '__m256', '_mm256_setzero_ps()', ['-mavx'] ], ] foreach intrin : x86_intrinsics intrin_check = '''#include <@0@> int main (int argc, char ** argv) { static @1@ mtest; mtest = @2@; return *((unsigned char *) &mtest) != 0; }'''.format(intrin[1],intrin[2],intrin[3]) intrin_name = intrin[0] # Intrinsics arguments are not available with MSVC-like compilers intrin_args = cc.get_argument_syntax() == 'msvc' ? [] : intrin[4] if cc.links(intrin_check, name : 'compiler supports @0@ intrinsics'.format(intrin_name)) may_have_intrin = true presume_intrin = opus_can_presume_simd elif intrin_args.length() > 0 presume_intrin = false if cc.links(intrin_check, args : intrin_args, name : 'compiler supports @0@ intrinsics with @1@'.format(intrin_name, ' '.join(intrin_args))) may_have_intrin = true else may_have_intrin = false endif endif if may_have_intrin intrinsics_support += [intrin_name] intrin_lower_name = intrin_name.to_lower().underscorify() set_variable('have_' + intrin_lower_name, true) opus_conf.set('OPUS_X86_MAY_HAVE_' + intrin_name.underscorify(), 1) if presume_intrin opus_conf.set('OPUS_X86_PRESUME_' + intrin_name.underscorify(), 1) else rtcd_support += [intrin_name] set_variable('opus_@0@_args'.format(intrin_lower_name), intrin_args) endif else message('Compiler does not support @0@ intrinsics'.format(intrin_name)) endif endforeach if not opt_rtcd.disabled() get_cpuid_by_asm = false cpuid_asm_code = ''' #include int main (int argc, char ** argv) { unsigned int CPUInfo0; unsigned int CPUInfo1; unsigned int CPUInfo2; unsigned int CPUInfo3; unsigned int InfoType; #if defined(__i386__) && defined(__PIC__) __asm__ __volatile__ ( "xchg %%ebx, %1\n" "cpuid\n" "xchg %%ebx, %1\n": "=a" (CPUInfo0), "=r" (CPUInfo1), "=c" (CPUInfo2), "=d" (CPUInfo3) : "a" (InfoType), "c" (0) ); #else __asm__ __volatile__ ( "cpuid": "=a" (CPUInfo0), "=b" (CPUInfo1), "=c" (CPUInfo2), "=d" (CPUInfo3) : "a" (InfoType), "c" (0) ); #endif return 0; }''' cpuid_c_code = ''' #include int main (int argc, char ** argv) { unsigned int CPUInfo0; unsigned int CPUInfo1; unsigned int CPUInfo2; unsigned int CPUInfo3; unsigned int InfoType; __get_cpuid(InfoType, &CPUInfo0, &CPUInfo1, &CPUInfo2, &CPUInfo3); return 0; }''' cpuid_msvc_code = ''' #include int main (void) { int CPUInfo, InfoType; __cpuid(&CPUInfo, InfoType); }''' if cc.links(cpuid_asm_code, name : 'Get X86 CPU info via inline assembly') opus_conf.set('CPU_INFO_BY_ASM', 1) elif cc.links(cpuid_c_code, name : 'Get X86 CPU info via C method') opus_conf.set('CPU_INFO_BY_C', 1) elif cc.get_define('_MSC_VER') != '' and cc.links(cpuid_msvc_code) message('Getting X86 CPU info via __cpuid') else if opt_intrinsics.enabled() and opt_rtcd.enabled() error('intrinsics and rtcd options are enabled, but no Get CPU Info method detected') endif warning('Get CPU Info method not detected, no rtcd for intrinsics') endif endif # opt_rtcd else if opt_intrinsics.enabled() error('intrinsics option enabled, but no intrinsics support for ' + host_cpu_family) endif warning('No intrinsics support for ' + host_cpu_family) endif endif # Check whether we require intrinsics and we support intrinsics on this arch, # but none were detected. Can happen because of incorrect compiler flags, such # as missing -mfloat-abi=softfp on ARM32 softfp architectures. if opt_intrinsics.enabled() and intrinsics_support.length() == 0 error('intrinsics option was enabled, but none were detected') endif if opt_rtcd.disabled() rtcd_support = 'disabled' else if rtcd_support.length() > 0 opus_conf.set('OPUS_HAVE_RTCD', 1) else if intrinsics_support.length() == 0 rtcd_support = 'none' if opt_rtcd.enabled() error('rtcd option is enabled, but no support for intrinsics or assembly is available') endif else rtcd_support = 'not needed' endif endif endif # extract source file lists from .mk files mk_files = ['silk_sources.mk', 'opus_headers.mk', 'opus_sources.mk', 'silk_headers.mk', 'celt_sources.mk', 'celt_headers.mk'] lines = run_command('meson/read-sources-list.py', mk_files, check: true).stdout().strip().split('\n') sources = {} foreach l : lines a = l.split(' = ') var_name = a[0] file_list = a[1].split() sources += {var_name: files(file_list)} endforeach subdir('include') subdir('silk') subdir('celt') subdir('src') configure_file(output: 'config.h', configuration: opus_conf) if not opt_tests.disabled() subdir('celt/tests') subdir('silk/tests') subdir('tests') endif # pkg-config files (not using pkg module so we can use the existing .pc.in file) pkgconf = configuration_data() pkgconf.set('prefix', join_paths(get_option('prefix'))) pkgconf.set('exec_prefix', '${prefix}') pkgconf.set('libdir', '${prefix}/@0@'.format(get_option('libdir'))) pkgconf.set('includedir', '${prefix}/@0@'.format(get_option('includedir'))) pkgconf.set('VERSION', opus_version) pkgconf.set('PC_BUILD', pc_build) pkgconf.set('LIBM', libm.found() ? '-lm' : '') pkg_install_dir = '@0@/pkgconfig'.format(get_option('libdir')) configure_file(input : 'opus.pc.in', output : 'opus.pc', configuration : pkgconf, install_dir : pkg_install_dir) # The uninstalled one has hardcoded libtool + static lib stuff, skip it for now #configure_file(input : 'opus-uninstalled.pc.in', # output : 'opus-uninstalled.pc', # configuration : pkgconf, # install : false) doxygen = find_program('doxygen', required: get_option('docs')) if doxygen.found() subdir('doc') endif summary( { 'C99 var arrays': opus_conf.has('VAR_ARRAYS'), 'C99 lrintf': opus_conf.has('HAVE_LRINTF'), 'Use alloca': msg_use_alloca, }, section: 'Compiler support', bool_yn: true, list_sep: ', ', ) # Parse optimization status foreach status : [['inline_optimization', opt_asm], ['asm_optimization', opt_asm], ['intrinsics_support', opt_intrinsics]] res = status[0] opt = status[1] resval = get_variable(res) if opt.disabled() set_variable(res, 'disabled') elif resval.length() == 0 if host_cpu_family not in ['arm', 'aarch64', 'x86', 'x86_64'] set_variable(res, 'No optimizations for your platform, please send patches') else set_variable(res, 'none') endif endif endforeach summary( { 'Floating point support': not opt_fixed_point, 'Fast float approximations': opt_float_approx, 'Fixed point debugging': opt_fixed_point_debug, 'Inline assembly optimizations': inline_optimization, 'External assembly optimizations': asm_optimization, 'Intrinsics optimizations': intrinsics_support, 'Run-time CPU detection': rtcd_support, }, section: 'Optimizations', bool_yn: true, list_sep: ', ', ) summary( { 'Custom modes': opt_custom_modes, 'Assertions': opt_assertions, 'Hardening': opt_hardening, 'Fuzzing': opt_fuzzing, 'Check ASM': opt_check_asm, 'API documentation': doxygen.found(), 'Extra programs': not extra_programs.disabled(), 'Tests': not opt_tests.disabled(), }, section: 'General configuration', bool_yn: true, list_sep: ', ', )