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
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
|
# Copyright 2012-2016 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import platform
import re
from .compilers import *
from .mesonlib import EnvironmentException, Popen_safe
import configparser
import shlex
import shutil
build_filename = 'meson.build'
# Environment variables that each lang uses.
cflags_mapping = {'c': 'CFLAGS',
'cpp': 'CXXFLAGS',
'objc': 'OBJCFLAGS',
'objcpp': 'OBJCXXFLAGS',
'fortran': 'FFLAGS',
'd': 'DFLAGS',
'vala': 'VALAFLAGS'}
def find_coverage_tools():
gcovr_exe = 'gcovr'
lcov_exe = 'lcov'
genhtml_exe = 'genhtml'
if not mesonlib.exe_exists([gcovr_exe, '--version']):
gcovr_exe = None
if not mesonlib.exe_exists([lcov_exe, '--version']):
lcov_exe = None
if not mesonlib.exe_exists([genhtml_exe, '--version']):
genhtml_exe = None
return gcovr_exe, lcov_exe, genhtml_exe
def detect_ninja(version='1.5'):
for n in ['ninja', 'ninja-build']:
try:
p, found = Popen_safe([n, '--version'])[0:2]
except (FileNotFoundError, PermissionError):
# Doesn't exist in PATH or isn't executable
continue
# Perhaps we should add a way for the caller to know the failure mode
# (not found or too old)
if p.returncode == 0 and mesonlib.version_compare(found, '>=' + version):
return n
def detect_native_windows_arch():
"""
The architecture of Windows itself: x86 or amd64
"""
# These env variables are always available. See:
# https://msdn.microsoft.com/en-us/library/aa384274(VS.85).aspx
# https://blogs.msdn.microsoft.com/david.wang/2006/03/27/howto-detect-process-bitness/
arch = os.environ.get('PROCESSOR_ARCHITEW6432', '').lower()
if not arch:
try:
# If this doesn't exist, something is messing with the environment
arch = os.environ['PROCESSOR_ARCHITECTURE'].lower()
except KeyError:
raise EnvironmentException('Unable to detect native OS architecture')
return arch
def detect_windows_arch(compilers):
"""
Detecting the 'native' architecture of Windows is not a trivial task. We
cannot trust that the architecture that Python is built for is the 'native'
one because you can run 32-bit apps on 64-bit Windows using WOW64 and
people sometimes install 32-bit Python on 64-bit Windows.
We also can't rely on the architecture of the OS itself, since it's
perfectly normal to compile and run 32-bit applications on Windows as if
they were native applications. It's a terrible experience to require the
user to supply a cross-info file to compile 32-bit applications on 64-bit
Windows. Thankfully, the only way to compile things with Visual Studio on
Windows is by entering the 'msvc toolchain' environment, which can be
easily detected.
In the end, the sanest method is as follows:
1. Check if we're in an MSVC toolchain environment, and if so, return the
MSVC toolchain architecture as our 'native' architecture.
2. If not, check environment variables that are set by Windows and WOW64 to
find out the architecture that Windows is built for, and use that as our
'native' architecture.
"""
os_arch = detect_native_windows_arch()
if os_arch != 'amd64':
return os_arch
# If we're on 64-bit Windows, 32-bit apps can be compiled without
# cross-compilation. So if we're doing that, just set the native arch as
# 32-bit and pretend like we're running under WOW64. Else, return the
# actual Windows architecture that we deduced above.
for compiler in compilers.values():
# Check if we're using and inside an MSVC toolchain environment
if compiler.id == 'msvc' and 'VCINSTALLDIR' in os.environ:
# 'Platform' is only set when the target arch is not 'x86'.
# It's 'x64' when targetting x86_64 and 'arm' when targetting ARM.
platform = os.environ.get('Platform', 'x86').lower()
if platform == 'x86':
return platform
if compiler.id == 'gcc' and compiler.has_builtin_define('__i386__'):
return 'x86'
return os_arch
def detect_cpu_family(compilers):
"""
Python is inconsistent in its platform module.
It returns different values for the same cpu.
For x86 it might return 'x86', 'i686' or somesuch.
Do some canonicalization.
"""
if mesonlib.is_windows():
trial = detect_windows_arch(compilers)
else:
trial = platform.machine().lower()
if trial.startswith('i') and trial.endswith('86'):
return 'x86'
if trial.startswith('arm'):
return 'arm'
if trial in ('amd64', 'x64'):
trial = 'x86_64'
if trial == 'x86_64':
# On Linux (and maybe others) there can be any mixture of 32/64 bit
# code in the kernel, Python, system etc. The only reliable way
# to know is to check the compiler defines.
for c in compilers.values():
try:
if c.has_builtin_define('__i386__'):
return 'x86'
except mesonlib.MesonException:
# Ignore compilers that do not support has_builtin_define.
pass
return 'x86_64'
# Add fixes here as bugs are reported.
return trial
def detect_cpu(compilers):
if mesonlib.is_windows():
trial = detect_windows_arch(compilers)
else:
trial = platform.machine().lower()
if trial in ('amd64', 'x64'):
trial = 'x86_64'
if trial == 'x86_64':
# Same check as above for cpu_family
for c in compilers.values():
try:
if c.has_builtin_define('__i386__'):
return 'i686' # All 64 bit cpus have at least this level of x86 support.
except mesonlib.MesonException:
pass
return 'x86_64'
# Add fixes here as bugs are reported.
return trial
def detect_system():
system = platform.system().lower()
if system.startswith('cygwin'):
return 'cygwin'
return system
def for_windows(is_cross, env):
"""
Host machine is windows?
Note: 'host' is the machine on which compiled binaries will run
"""
if not is_cross:
return mesonlib.is_windows()
elif env.cross_info.has_host():
return env.cross_info.config['host_machine']['system'] == 'windows'
return False
def for_cygwin(is_cross, env):
"""
Host machine is cygwin?
Note: 'host' is the machine on which compiled binaries will run
"""
if not is_cross:
return mesonlib.is_cygwin()
elif env.cross_info.has_host():
return env.cross_info.config['host_machine']['system'] == 'cygwin'
return False
def for_darwin(is_cross, env):
"""
Host machine is Darwin (iOS/OS X)?
Note: 'host' is the machine on which compiled binaries will run
"""
if not is_cross:
return mesonlib.is_osx()
elif env.cross_info.has_host():
return env.cross_info.config['host_machine']['system'] == 'darwin'
return False
def search_version(text):
# Usually of the type 4.1.4 but compiler output may contain
# stuff like this:
# (Sourcery CodeBench Lite 2014.05-29) 4.8.3 20140320 (prerelease)
# Limiting major version number to two digits seems to work
# thus far. When we get to GCC 100, this will break, but
# if we are still relevant when that happens, it can be
# considered an achievement in itself.
#
# This regex is reaching magic levels. If it ever needs
# to be updated, do not complexify but convert to something
# saner instead.
version_regex = '(?<!(\d|\.))(\d{1,2}(\.\d+)+(-[a-zA-Z0-9]+)?)'
match = re.search(version_regex, text)
if match:
return match.group(0)
return 'unknown version'
class Environment:
private_dir = 'meson-private'
log_dir = 'meson-logs'
coredata_file = os.path.join(private_dir, 'coredata.dat')
def __init__(self, source_dir, build_dir, main_script_launcher, options, original_cmd_line_args):
self.source_dir = source_dir
self.build_dir = build_dir
self.meson_script_launcher = main_script_launcher
self.scratch_dir = os.path.join(build_dir, Environment.private_dir)
self.log_dir = os.path.join(build_dir, Environment.log_dir)
os.makedirs(self.scratch_dir, exist_ok=True)
os.makedirs(self.log_dir, exist_ok=True)
try:
cdf = os.path.join(self.get_build_dir(), Environment.coredata_file)
self.coredata = coredata.load(cdf)
self.first_invocation = False
except FileNotFoundError:
# WARNING: Don't use any values from coredata in __init__. It gets
# re-initialized with project options by the interpreter during
# build file parsing.
self.coredata = coredata.CoreData(options)
self.coredata.meson_script_launcher = self.meson_script_launcher
self.first_invocation = True
if self.coredata.cross_file:
self.cross_info = CrossBuildInfo(self.coredata.cross_file)
else:
self.cross_info = None
self.cmd_line_options = options
self.original_cmd_line_args = original_cmd_line_args
# List of potential compilers.
if mesonlib.is_windows():
self.default_c = ['cl', 'cc', 'gcc', 'clang']
self.default_cpp = ['cl', 'c++', 'g++', 'clang++']
else:
self.default_c = ['cc']
self.default_cpp = ['c++']
self.default_objc = ['cc']
self.default_objcpp = ['c++']
self.default_fortran = ['gfortran', 'g95', 'f95', 'f90', 'f77', 'ifort']
self.default_static_linker = ['ar']
self.vs_static_linker = ['lib']
self.gcc_static_linker = ['gcc-ar']
self.clang_static_linker = ['llvm-ar']
# Various prefixes and suffixes for import libraries, shared libraries,
# static libraries, and executables.
# Versioning is added to these names in the backends as-needed.
cross = self.is_cross_build()
if (not cross and mesonlib.is_windows()) \
or (cross and self.cross_info.has_host() and self.cross_info.config['host_machine']['system'] == 'windows'):
self.exe_suffix = 'exe'
self.object_suffix = 'obj'
self.win_libdir_layout = True
elif (not cross and mesonlib.is_cygwin()) \
or (cross and self.cross_info.has_host() and self.cross_info.config['host_machine']['system'] == 'cygwin'):
self.exe_suffix = 'exe'
self.object_suffix = 'o'
self.win_libdir_layout = True
else:
self.exe_suffix = ''
self.object_suffix = 'o'
self.win_libdir_layout = False
if 'STRIP' in os.environ:
self.native_strip_bin = shlex.split('STRIP')
else:
self.native_strip_bin = ['strip']
def is_cross_build(self):
return self.cross_info is not None
def dump_coredata(self, mtime):
cdf = os.path.join(self.get_build_dir(), Environment.coredata_file)
coredata.save(self.coredata, cdf)
os.utime(cdf, times=(mtime, mtime))
def get_script_dir(self):
import mesonbuild.scripts
return os.path.dirname(mesonbuild.scripts.__file__)
def get_log_dir(self):
return self.log_dir
def get_coredata(self):
return self.coredata
def get_build_command(self):
return self.meson_script_launcher
def is_header(self, fname):
return is_header(fname)
def is_source(self, fname):
return is_source(fname)
def is_assembly(self, fname):
return is_assembly(fname)
def is_llvm_ir(self, fname):
return is_llvm_ir(fname)
def is_object(self, fname):
return is_object(fname)
def is_library(self, fname):
return is_library(fname)
def had_argument_for(self, option):
trial1 = '--' + option
trial2 = '-D' + option
previous_is_plaind = False
for i in self.original_cmd_line_args:
if i.startswith(trial1) or i.startswith(trial2):
return True
if previous_is_plaind and i.startswith(option):
return True
previous_is_plaind = i == '-D'
return False
def merge_options(self, options):
for (name, value) in options.items():
if name not in self.coredata.user_options:
self.coredata.user_options[name] = value
else:
oldval = self.coredata.user_options[name]
if type(oldval) != type(value):
self.coredata.user_options[name] = value
@staticmethod
def get_gnu_compiler_defines(compiler):
"""
Detect GNU compiler platform type (Apple, MinGW, Unix)
"""
# Arguments to output compiler pre-processor defines to stdout
# gcc, g++, and gfortran all support these arguments
args = compiler + ['-E', '-dM', '-']
p, output = Popen_safe(args, write='', stdin=subprocess.PIPE)[0:2]
if p.returncode != 0:
raise EnvironmentException('Unable to detect GNU compiler type:\n' + output)
# Parse several lines of the type:
# `#define ___SOME_DEF some_value`
# and extract `___SOME_DEF`
defines = {}
for line in output.split('\n'):
if not line:
continue
d, *rest = line.split(' ', 2)
if d != '#define':
continue
if len(rest) == 1:
defines[rest] = True
if len(rest) == 2:
defines[rest[0]] = rest[1]
return defines
@staticmethod
def get_gnu_version_from_defines(defines):
dot = '.'
major = defines.get('__GNUC__', '0')
minor = defines.get('__GNUC_MINOR__', '0')
patch = defines.get('__GNUC_PATCHLEVEL__', '0')
return dot.join((major, minor, patch))
@staticmethod
def get_gnu_compiler_type(defines):
# Detect GCC type (Apple, MinGW, Cygwin, Unix)
if '__APPLE__' in defines:
return GCC_OSX
elif '__MINGW32__' in defines or '__MINGW64__' in defines:
return GCC_MINGW
elif '__CYGWIN__' in defines:
return GCC_CYGWIN
return GCC_STANDARD
def _get_compilers(self, lang, evar, want_cross):
'''
The list of compilers is detected in the exact same way for
C, C++, ObjC, ObjC++, Fortran so consolidate it here.
'''
if self.is_cross_build() and want_cross:
compilers = mesonlib.stringlistify(self.cross_info.config['binaries'][lang])
# Ensure ccache exists and remove it if it doesn't
if compilers[0] == 'ccache':
compilers = compilers[1:]
ccache = self.detect_ccache()
else:
ccache = []
# Return value has to be a list of compiler 'choices'
compilers = [compilers]
is_cross = True
if self.cross_info.need_exe_wrapper():
exe_wrap = self.cross_info.config['binaries'].get('exe_wrapper', None)
else:
exe_wrap = []
elif evar in os.environ:
compilers = shlex.split(os.environ[evar])
# Ensure ccache exists and remove it if it doesn't
if compilers[0] == 'ccache':
compilers = compilers[1:]
ccache = self.detect_ccache()
else:
ccache = []
# Return value has to be a list of compiler 'choices'
compilers = [compilers]
is_cross = False
exe_wrap = None
else:
compilers = getattr(self, 'default_' + lang)
ccache = self.detect_ccache()
is_cross = False
exe_wrap = None
return compilers, ccache, is_cross, exe_wrap
def _handle_exceptions(self, exceptions, binaries, bintype='compiler'):
errmsg = 'Unknown {}(s): {}'.format(bintype, binaries)
if exceptions:
errmsg += '\nThe follow exceptions were encountered:'
for (c, e) in exceptions.items():
errmsg += '\nRunning "{0}" gave "{1}"'.format(c, e)
raise EnvironmentException(errmsg)
def _detect_c_or_cpp_compiler(self, lang, evar, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers(lang, evar, want_cross)
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
if 'cl' in compiler or 'cl.exe' in compiler:
arg = '/?'
else:
arg = '--version'
try:
p, out, err = Popen_safe(compiler + [arg])
except OSError as e:
popen_exceptions[' '.join(compiler + [arg])] = e
continue
version = search_version(out)
if 'Free Software Foundation' in out:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[compiler] = 'no pre-processor defines'
continue
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
cls = GnuCCompiler if lang == 'c' else GnuCPPCompiler
return cls(ccache + compiler, version, gtype, is_cross, exe_wrap, defines)
if 'clang' in out:
if 'Apple' in out or for_darwin(want_cross, self):
cltype = CLANG_OSX
elif 'windows' in out or for_windows(want_cross, self):
cltype = CLANG_WIN
else:
cltype = CLANG_STANDARD
cls = ClangCCompiler if lang == 'c' else ClangCPPCompiler
return cls(ccache + compiler, version, cltype, is_cross, exe_wrap)
if 'Microsoft' in out or 'Microsoft' in err:
# Visual Studio prints version number to stderr but
# everything else to stdout. Why? Lord only knows.
version = search_version(err)
cls = VisualStudioCCompiler if lang == 'c' else VisualStudioCPPCompiler
return cls(compiler, version, is_cross, exe_wrap)
if '(ICC)' in out:
# TODO: add microsoft add check OSX
inteltype = ICC_STANDARD
cls = IntelCCompiler if lang == 'c' else IntelCPPCompiler
return cls(ccache + compiler, version, inteltype, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def detect_c_compiler(self, want_cross):
return self._detect_c_or_cpp_compiler('c', 'CC', want_cross)
def detect_cpp_compiler(self, want_cross):
return self._detect_c_or_cpp_compiler('cpp', 'CXX', want_cross)
def detect_fortran_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('fortran', 'FC', want_cross)
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
for arg in ['--version', '-V']:
try:
p, out, err = Popen_safe(compiler + [arg])
except OSError as e:
popen_exceptions[' '.join(compiler + [arg])] = e
continue
version = search_version(out)
if 'GNU Fortran' in out:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[compiler] = 'no pre-processor defines'
continue
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
return GnuFortranCompiler(compiler, version, gtype, is_cross, exe_wrap, defines)
if 'G95' in out:
return G95FortranCompiler(compiler, version, is_cross, exe_wrap)
if 'Sun Fortran' in err:
version = search_version(err)
return SunFortranCompiler(compiler, version, is_cross, exe_wrap)
if 'ifort (IFORT)' in out:
return IntelFortranCompiler(compiler, version, is_cross, exe_wrap)
if 'PathScale EKOPath(tm)' in err:
return PathScaleFortranCompiler(compiler, version, is_cross, exe_wrap)
if 'PGI Compilers' in out:
return PGIFortranCompiler(compiler, version, is_cross, exe_wrap)
if 'Open64 Compiler Suite' in err:
return Open64FortranCompiler(compiler, version, is_cross, exe_wrap)
if 'NAG Fortran' in err:
return NAGFortranCompiler(compiler, version, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def get_scratch_dir(self):
return self.scratch_dir
def get_depfixer(self):
path = os.path.split(__file__)[0]
return os.path.join(path, 'depfixer.py')
def detect_objc_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('objc', 'OBJC', want_cross)
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
arg = ['--version']
try:
p, out, err = Popen_safe(compiler + arg)
except OSError as e:
popen_exceptions[' '.join(compiler + arg)] = e
version = search_version(out)
if 'Free Software Foundation' in out:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[compiler] = 'no pre-processor defines'
continue
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
return GnuObjCCompiler(ccache + compiler, version, gtype, is_cross, exe_wrap, defines)
if out.startswith('Apple LLVM'):
return ClangObjCCompiler(ccache + compiler, version, CLANG_OSX, is_cross, exe_wrap)
if out.startswith('clang'):
return ClangObjCCompiler(ccache + compiler, version, CLANG_STANDARD, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def detect_objcpp_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('objcpp', 'OBJCXX', want_cross)
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
arg = ['--version']
try:
p, out, err = Popen_safe(compiler + arg)
except OSError as e:
popen_exceptions[' '.join(compiler + arg)] = e
version = search_version(out)
if 'Free Software Foundation' in out:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[compiler] = 'no pre-processor defines'
continue
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
return GnuObjCPPCompiler(ccache + compiler, version, gtype, is_cross, exe_wrap, defines)
if out.startswith('Apple LLVM'):
return ClangObjCPPCompiler(ccache + compiler, version, CLANG_OSX, is_cross, exe_wrap)
if out.startswith('clang'):
return ClangObjCPPCompiler(ccache + compiler, version, CLANG_STANDARD, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def detect_java_compiler(self):
exelist = ['javac']
try:
p, out, err = Popen_safe(exelist + ['-version'])
except OSError:
raise EnvironmentException('Could not execute Java compiler "%s"' % ' '.join(exelist))
version = search_version(err)
if 'javac' in err:
return JavaCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_cs_compiler(self):
exelist = ['mcs']
try:
p, out, err = Popen_safe(exelist + ['--version'])
except OSError:
raise EnvironmentException('Could not execute C# compiler "%s"' % ' '.join(exelist))
version = search_version(out)
if 'Mono' in out:
return MonoCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_vala_compiler(self):
exelist = ['valac']
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError:
raise EnvironmentException('Could not execute Vala compiler "%s"' % ' '.join(exelist))
version = search_version(out)
if 'Vala' in out:
return ValaCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_rust_compiler(self):
exelist = ['rustc']
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError:
raise EnvironmentException('Could not execute Rust compiler "%s"' % ' '.join(exelist))
version = search_version(out)
if 'rustc' in out:
return RustCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_d_compiler(self, want_cross):
is_cross = False
# Search for a D compiler.
# We prefer LDC over GDC unless overridden with the DC
# environment variable because LDC has a much more
# up to date language version at time (2016).
if 'DC' in os.environ:
exelist = shlex.split(os.environ['DC'])
elif self.is_cross_build() and want_cross:
exelist = mesonlib.stringlistify(self.cross_info.config['binaries']['d'])
is_cross = True
elif shutil.which("ldc2"):
exelist = ['ldc2']
elif shutil.which("ldc"):
exelist = ['ldc']
elif shutil.which("gdc"):
exelist = ['gdc']
elif shutil.which("dmd"):
exelist = ['dmd']
else:
raise EnvironmentException('Could not find any supported D compiler.')
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError:
raise EnvironmentException('Could not execute D compiler "%s"' % ' '.join(exelist))
version = search_version(out)
if 'LLVM D compiler' in out:
return LLVMDCompiler(exelist, version, is_cross)
elif 'gdc' in out:
return GnuDCompiler(exelist, version, is_cross)
elif 'Digital Mars' in out:
return DmdDCompiler(exelist, version, is_cross)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_swift_compiler(self):
exelist = ['swiftc']
try:
p, _, err = Popen_safe(exelist + ['-v'])
except OSError:
raise EnvironmentException('Could not execute Swift compiler "%s"' % ' '.join(exelist))
version = search_version(err)
if 'Swift' in err:
return SwiftCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_static_linker(self, compiler):
if compiler.is_cross:
linker = self.cross_info.config['binaries']['ar']
if isinstance(linker, str):
linker = [linker]
linkers = [linker]
else:
evar = 'AR'
if evar in os.environ:
linkers = [shlex.split(os.environ[evar])]
elif isinstance(compiler, VisualStudioCCompiler):
linkers = [self.vs_static_linker]
elif isinstance(compiler, GnuCompiler):
# Use gcc-ar if available; needed for LTO
linkers = [self.gcc_static_linker, self.default_static_linker]
elif isinstance(compiler, ClangCompiler):
# Use llvm-ar if available; needed for LTO
linkers = [self.clang_static_linker, self.default_static_linker]
else:
linkers = [self.default_static_linker]
popen_exceptions = {}
for linker in linkers:
if 'lib' in linker or 'lib.exe' in linker:
arg = '/?'
else:
arg = '--version'
try:
p, out, err = Popen_safe(linker + [arg])
except OSError as e:
popen_exceptions[' '.join(linker + [arg])] = e
continue
if '/OUT:' in out or '/OUT:' in err:
return VisualStudioLinker(linker)
if p.returncode == 0:
return ArLinker(linker)
if p.returncode == 1 and err.startswith('usage'): # OSX
return ArLinker(linker)
self._handle_exceptions(popen_exceptions, linkers, 'linker')
raise EnvironmentException('Unknown static linker "%s"' % ' '.join(linkers))
def detect_ccache(self):
try:
has_ccache = subprocess.call(['ccache', '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
except OSError:
has_ccache = 1
if has_ccache == 0:
cmdlist = ['ccache']
else:
cmdlist = []
return cmdlist
def get_source_dir(self):
return self.source_dir
def get_build_dir(self):
return self.build_dir
def get_exe_suffix(self):
return self.exe_suffix
def get_import_lib_dir(self):
"Install dir for the import library (library used for linking)"
return self.get_libdir()
def get_shared_module_dir(self):
"Install dir for shared modules that are loaded at runtime"
return self.get_libdir()
def get_shared_lib_dir(self):
"Install dir for the shared library"
if self.win_libdir_layout:
return self.get_bindir()
return self.get_libdir()
def get_static_lib_dir(self):
"Install dir for the static library"
return self.get_libdir()
def get_object_suffix(self):
return self.object_suffix
def get_prefix(self):
return self.coredata.get_builtin_option('prefix')
def get_libdir(self):
return self.coredata.get_builtin_option('libdir')
def get_libexecdir(self):
return self.coredata.get_builtin_option('libexecdir')
def get_bindir(self):
return self.coredata.get_builtin_option('bindir')
def get_includedir(self):
return self.coredata.get_builtin_option('includedir')
def get_mandir(self):
return self.coredata.get_builtin_option('mandir')
def get_datadir(self):
return self.coredata.get_builtin_option('datadir')
def get_args_from_envvars(compiler):
"""
@compiler: Compiler to fetch environment flags for
Returns a tuple of (compile_flags, link_flags) for the specified language
from the inherited environment
"""
def log_var(var, val):
if val:
mlog.log('Appending {} from environment: {!r}'.format(var, val))
lang = compiler.get_language()
compiler_is_linker = False
if hasattr(compiler, 'get_linker_exelist'):
compiler_is_linker = (compiler.get_exelist() == compiler.get_linker_exelist())
if lang not in cflags_mapping:
return [], [], []
compile_flags = os.environ.get(cflags_mapping[lang], '')
log_var(cflags_mapping[lang], compile_flags)
compile_flags = shlex.split(compile_flags)
# Link flags (same for all languages)
link_flags = os.environ.get('LDFLAGS', '')
log_var('LDFLAGS', link_flags)
link_flags = shlex.split(link_flags)
if compiler_is_linker:
# When the compiler is used as a wrapper around the linker (such as
# with GCC and Clang), the compile flags can be needed while linking
# too. This is also what Autotools does. However, we don't want to do
# this when the linker is stand-alone such as with MSVC C/C++, etc.
link_flags = compile_flags + link_flags
# Pre-processor flags (not for fortran or D)
preproc_flags = ''
if lang in ('c', 'cpp', 'objc', 'objcpp'):
preproc_flags = os.environ.get('CPPFLAGS', '')
log_var('CPPFLAGS', preproc_flags)
preproc_flags = shlex.split(preproc_flags)
compile_flags += preproc_flags
return preproc_flags, compile_flags, link_flags
class CrossBuildInfo:
def __init__(self, filename):
self.config = {'properties': {}}
self.parse_datafile(filename)
if 'target_machine' in self.config:
return
if 'host_machine' not in self.config:
raise mesonlib.MesonException('Cross info file must have either host or a target machine.')
if 'binaries' not in self.config:
raise mesonlib.MesonException('Cross file is missing "binaries".')
def ok_type(self, i):
return isinstance(i, (str, int, bool))
def parse_datafile(self, filename):
config = configparser.ConfigParser()
config.read(filename)
# This is a bit hackish at the moment.
for s in config.sections():
self.config[s] = {}
for entry in config[s]:
value = config[s][entry]
if ' ' in entry or '\t' in entry or "'" in entry or '"' in entry:
raise EnvironmentException('Malformed variable name %s in cross file..' % entry)
try:
res = eval(value, {'__builtins__': None}, {'true': True, 'false': False})
except Exception:
raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
if self.ok_type(res):
self.config[s][entry] = res
elif isinstance(res, list):
for i in res:
if not self.ok_type(i):
raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
self.config[s][entry] = res
else:
raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
def has_host(self):
return 'host_machine' in self.config
def has_target(self):
return 'target_machine' in self.config
def has_stdlib(self, language):
return language + '_stdlib' in self.config['properties']
def get_stdlib(self, language):
return self.config['properties'][language + '_stdlib']
def get_properties(self):
return self.config['properties']
# Wehn compiling a cross compiler we use the native compiler for everything.
# But not when cross compiling a cross compiler.
def need_cross_compiler(self):
return 'host_machine' in self.config
def need_exe_wrapper(self):
value = self.config['properties'].get('needs_exe_wrapper', None)
if value is not None:
return value
# Can almost always run 32-bit binaries on 64-bit natively if the host
# and build systems are the same. We don't pass any compilers to
# detect_cpu_family() here because we always want to know the OS
# architecture, not what the compiler environment tells us.
if self.has_host() and detect_cpu_family({}) == 'x86_64' and \
self.config['host_machine']['cpu_family'] == 'x86' and \
self.config['host_machine']['system'] == detect_system():
return False
return True
class MachineInfo:
def __init__(self, system, cpu_family, cpu, endian):
self.system = system
self.cpu_family = cpu_family
self.cpu = cpu
self.endian = endian
|