summaryrefslogtreecommitdiff
path: root/meson.build
blob: 41f69353f047bc921ab3d1fde1be0f95b638961f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
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 <math.h>', dependencies: libm))
opus_conf.set('HAVE_LRINT', cc.has_function('lrint', prefix: '#include <math.h>', dependencies: libm))
opus_conf.set('HAVE___MALLOC_HOOK', cc.has_function('__malloc_hook', prefix: '#include <malloc.h>'))
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 <alloca.h>
                    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 <malloc.h>
                    #include <stdlib.h>
                    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 <arm_neon.h>
      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 <arm_neon.h>
      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 <stdio.h>
        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 <cpuid.h>
        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 <intrin.h>
        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_machine.get_cpu())
    endif
    warning('No intrinsics support for ' + host_machine.get_cpu())
  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: ', ',
)