forked from rust-lang/rust
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathbootstrap.py
1233 lines (1089 loc) · 47.7 KB
/
bootstrap.py
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
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
from __future__ import absolute_import, division, print_function
import argparse
import contextlib
import datetime
import distutils.version
import hashlib
import json
import os
import re
import shutil
import subprocess
import sys
import tarfile
import tempfile
from time import time
def support_xz():
try:
with tempfile.NamedTemporaryFile(delete=False) as temp_file:
temp_path = temp_file.name
with tarfile.open(temp_path, "w:xz"):
pass
return True
except tarfile.CompressionError:
return False
def get(base, url, path, checksums, verbose=False, do_verify=True):
with tempfile.NamedTemporaryFile(delete=False) as temp_file:
temp_path = temp_file.name
try:
if do_verify:
if url not in checksums:
raise RuntimeError("src/stage0.json doesn't contain a checksum for {}".format(url))
sha256 = checksums[url]
if os.path.exists(path):
if verify(path, sha256, False):
if verbose:
print("using already-download file", path)
return
else:
if verbose:
print("ignoring already-download file",
path, "due to failed verification")
os.unlink(path)
download(temp_path, "{}/{}".format(base, url), True, verbose)
if do_verify and not verify(temp_path, sha256, verbose):
raise RuntimeError("failed verification")
if verbose:
print("moving {} to {}".format(temp_path, path))
shutil.move(temp_path, path)
finally:
if os.path.isfile(temp_path):
if verbose:
print("removing", temp_path)
os.unlink(temp_path)
def download(path, url, probably_big, verbose):
for _ in range(0, 4):
try:
_download(path, url, probably_big, verbose, True)
return
except RuntimeError:
print("\nspurious failure, trying again")
_download(path, url, probably_big, verbose, False)
def _download(path, url, probably_big, verbose, exception):
if probably_big or verbose:
print("downloading {}".format(url))
# see https://serverfault.com/questions/301128/how-to-download
if sys.platform == 'win32':
run(["PowerShell.exe", "/nologo", "-Command",
"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;",
"(New-Object System.Net.WebClient).DownloadFile('{}', '{}')".format(url, path)],
verbose=verbose,
exception=exception)
else:
if probably_big or verbose:
option = "-#"
else:
option = "-s"
require(["curl", "--version"])
run(["curl", option,
"-y", "30", "-Y", "10", # timeout if speed is < 10 bytes/sec for > 30 seconds
"--connect-timeout", "30", # timeout if cannot connect within 30 seconds
"--retry", "3", "-Sf", "-o", path, url],
verbose=verbose,
exception=exception)
def verify(path, expected, verbose):
"""Check if the sha256 sum of the given path is valid"""
if verbose:
print("verifying", path)
with open(path, "rb") as source:
found = hashlib.sha256(source.read()).hexdigest()
verified = found == expected
if not verified:
print("invalid checksum:\n"
" found: {}\n"
" expected: {}".format(found, expected))
return verified
def unpack(tarball, tarball_suffix, dst, verbose=False, match=None):
"""Unpack the given tarball file"""
print("extracting", tarball)
fname = os.path.basename(tarball).replace(tarball_suffix, "")
with contextlib.closing(tarfile.open(tarball)) as tar:
for member in tar.getnames():
if "/" not in member:
continue
name = member.replace(fname + "/", "", 1)
if match is not None and not name.startswith(match):
continue
name = name[len(match) + 1:]
dst_path = os.path.join(dst, name)
if verbose:
print(" extracting", member)
tar.extract(member, dst)
src_path = os.path.join(dst, member)
if os.path.isdir(src_path) and os.path.exists(dst_path):
continue
shutil.move(src_path, dst_path)
shutil.rmtree(os.path.join(dst, fname))
def run(args, verbose=False, exception=False, is_bootstrap=False, **kwargs):
"""Run a child program in a new process"""
if verbose:
print("running: " + ' '.join(args))
sys.stdout.flush()
# Use Popen here instead of call() as it apparently allows powershell on
# Windows to not lock up waiting for input presumably.
ret = subprocess.Popen(args, **kwargs)
code = ret.wait()
if code != 0:
err = "failed to run: " + ' '.join(args)
if verbose or exception:
raise RuntimeError(err)
# For most failures, we definitely do want to print this error, or the user will have no
# idea what went wrong. But when we've successfully built bootstrap and it failed, it will
# have already printed an error above, so there's no need to print the exact command we're
# running.
if is_bootstrap:
sys.exit(1)
else:
sys.exit(err)
def require(cmd, exit=True):
'''Run a command, returning its output.
On error,
If `exit` is `True`, exit the process.
Otherwise, return None.'''
try:
return subprocess.check_output(cmd).strip()
except (subprocess.CalledProcessError, OSError) as exc:
if not exit:
return None
print("error: unable to run `{}`: {}".format(' '.join(cmd), exc))
print("Please make sure it's installed and in the path.")
sys.exit(1)
def format_build_time(duration):
"""Return a nicer format for build time
>>> format_build_time('300')
'0:05:00'
"""
return str(datetime.timedelta(seconds=int(duration)))
def default_build_triple(verbose):
"""Build triple as in LLVM"""
# If the user already has a host build triple with an existing `rustc`
# install, use their preference. This fixes most issues with Windows builds
# being detected as GNU instead of MSVC.
default_encoding = sys.getdefaultencoding()
try:
version = subprocess.check_output(["rustc", "--version", "--verbose"],
stderr=subprocess.DEVNULL)
version = version.decode(default_encoding)
host = next(x for x in version.split('\n') if x.startswith("host: "))
triple = host.split("host: ")[1]
if verbose:
print("detected default triple {}".format(triple))
return triple
except Exception as e:
if verbose:
print("rustup not detected: {}".format(e))
print("falling back to auto-detect")
required = sys.platform != 'win32'
ostype = require(["uname", "-s"], exit=required)
cputype = require(['uname', '-m'], exit=required)
# If we do not have `uname`, assume Windows.
if ostype is None or cputype is None:
return 'x86_64-pc-windows-msvc'
ostype = ostype.decode(default_encoding)
cputype = cputype.decode(default_encoding)
# The goal here is to come up with the same triple as LLVM would,
# at least for the subset of platforms we're willing to target.
ostype_mapper = {
'Darwin': 'apple-darwin',
'DragonFly': 'unknown-dragonfly',
'FreeBSD': 'unknown-freebsd',
'Haiku': 'unknown-haiku',
'NetBSD': 'unknown-netbsd',
'OpenBSD': 'unknown-openbsd'
}
# Consider the direct transformation first and then the special cases
if ostype in ostype_mapper:
ostype = ostype_mapper[ostype]
elif ostype == 'Linux':
os_from_sp = subprocess.check_output(
['uname', '-o']).strip().decode(default_encoding)
if os_from_sp == 'Android':
ostype = 'linux-android'
else:
ostype = 'unknown-linux-gnu'
elif ostype == 'SunOS':
ostype = 'pc-solaris'
# On Solaris, uname -m will return a machine classification instead
# of a cpu type, so uname -p is recommended instead. However, the
# output from that option is too generic for our purposes (it will
# always emit 'i386' on x86/amd64 systems). As such, isainfo -k
# must be used instead.
cputype = require(['isainfo', '-k']).decode(default_encoding)
# sparc cpus have sun as a target vendor
if 'sparc' in cputype:
ostype = 'sun-solaris'
elif ostype.startswith('MINGW'):
# msys' `uname` does not print gcc configuration, but prints msys
# configuration. so we cannot believe `uname -m`:
# msys1 is always i686 and msys2 is always x86_64.
# instead, msys defines $MSYSTEM which is MINGW32 on i686 and
# MINGW64 on x86_64.
ostype = 'pc-windows-gnu'
cputype = 'i686'
if os.environ.get('MSYSTEM') == 'MINGW64':
cputype = 'x86_64'
elif ostype.startswith('MSYS'):
ostype = 'pc-windows-gnu'
elif ostype.startswith('CYGWIN_NT'):
cputype = 'i686'
if ostype.endswith('WOW64'):
cputype = 'x86_64'
ostype = 'pc-windows-gnu'
elif sys.platform == 'win32':
# Some Windows platforms might have a `uname` command that returns a
# non-standard string (e.g. gnuwin32 tools returns `windows32`). In
# these cases, fall back to using sys.platform.
return 'x86_64-pc-windows-msvc'
else:
err = "unknown OS type: {}".format(ostype)
sys.exit(err)
if cputype == 'powerpc' and ostype == 'unknown-freebsd':
cputype = subprocess.check_output(
['uname', '-p']).strip().decode(default_encoding)
cputype_mapper = {
'BePC': 'i686',
'aarch64': 'aarch64',
'amd64': 'x86_64',
'arm64': 'aarch64',
'i386': 'i686',
'i486': 'i686',
'i686': 'i686',
'i786': 'i686',
'm68k': 'm68k',
'powerpc': 'powerpc',
'powerpc64': 'powerpc64',
'powerpc64le': 'powerpc64le',
'ppc': 'powerpc',
'ppc64': 'powerpc64',
'ppc64le': 'powerpc64le',
'riscv64': 'riscv64gc',
's390x': 's390x',
'x64': 'x86_64',
'x86': 'i686',
'x86-64': 'x86_64',
'x86_64': 'x86_64'
}
# Consider the direct transformation first and then the special cases
if cputype in cputype_mapper:
cputype = cputype_mapper[cputype]
elif cputype in {'xscale', 'arm'}:
cputype = 'arm'
if ostype == 'linux-android':
ostype = 'linux-androideabi'
elif ostype == 'unknown-freebsd':
cputype = subprocess.check_output(
['uname', '-p']).strip().decode(default_encoding)
ostype = 'unknown-freebsd'
elif cputype == 'armv6l':
cputype = 'arm'
if ostype == 'linux-android':
ostype = 'linux-androideabi'
else:
ostype += 'eabihf'
elif cputype in {'armv7l', 'armv8l'}:
cputype = 'armv7'
if ostype == 'linux-android':
ostype = 'linux-androideabi'
else:
ostype += 'eabihf'
elif cputype == 'mips':
if sys.byteorder == 'big':
cputype = 'mips'
elif sys.byteorder == 'little':
cputype = 'mipsel'
else:
raise ValueError("unknown byteorder: {}".format(sys.byteorder))
elif cputype == 'mips64':
if sys.byteorder == 'big':
cputype = 'mips64'
elif sys.byteorder == 'little':
cputype = 'mips64el'
else:
raise ValueError('unknown byteorder: {}'.format(sys.byteorder))
# only the n64 ABI is supported, indicate it
ostype += 'abi64'
elif cputype == 'sparc' or cputype == 'sparcv9' or cputype == 'sparc64':
pass
else:
err = "unknown cpu type: {}".format(cputype)
sys.exit(err)
return "{}-{}".format(cputype, ostype)
@contextlib.contextmanager
def output(filepath):
tmp = filepath + '.tmp'
with open(tmp, 'w') as f:
yield f
try:
if os.path.exists(filepath):
os.remove(filepath) # PermissionError/OSError on Win32 if in use
except OSError:
shutil.copy2(tmp, filepath)
os.remove(tmp)
return
os.rename(tmp, filepath)
class Stage0Toolchain:
def __init__(self, stage0_payload):
self.date = stage0_payload["date"]
self.version = stage0_payload["version"]
def channel(self):
return self.version + "-" + self.date
class RustBuild(object):
"""Provide all the methods required to build Rust"""
def __init__(self):
self.checksums_sha256 = {}
self.stage0_compiler = None
self.stage0_rustfmt = None
self._download_url = ''
self.build = ''
self.build_dir = ''
self.clean = False
self.config_toml = ''
self.rust_root = ''
self.use_locked_deps = ''
self.use_vendored_sources = ''
self.verbose = False
self.git_version = None
self.nix_deps_dir = None
self.rustc_commit = None
def download_toolchain(self, stage0=True, rustc_channel=None):
"""Fetch the build system for Rust, written in Rust
This method will build a cache directory, then it will fetch the
tarball which has the stage0 compiler used to then bootstrap the Rust
compiler itself.
Each downloaded tarball is extracted, after that, the script
will move all the content to the right place.
"""
if rustc_channel is None:
rustc_channel = self.stage0_compiler.version
bin_root = self.bin_root(stage0)
key = self.stage0_compiler.date
if not stage0:
key += str(self.rustc_commit)
if self.rustc(stage0).startswith(bin_root) and \
(not os.path.exists(self.rustc(stage0)) or
self.program_out_of_date(self.rustc_stamp(stage0), key)):
if os.path.exists(bin_root):
shutil.rmtree(bin_root)
tarball_suffix = '.tar.xz' if support_xz() else '.tar.gz'
filename = "rust-std-{}-{}{}".format(
rustc_channel, self.build, tarball_suffix)
pattern = "rust-std-{}".format(self.build)
self._download_component_helper(filename, pattern, tarball_suffix, stage0)
filename = "rustc-{}-{}{}".format(rustc_channel, self.build,
tarball_suffix)
self._download_component_helper(filename, "rustc", tarball_suffix, stage0)
# download-rustc doesn't need its own cargo, it can just use beta's.
if stage0:
filename = "cargo-{}-{}{}".format(rustc_channel, self.build,
tarball_suffix)
self._download_component_helper(filename, "cargo", tarball_suffix)
self.fix_bin_or_dylib("{}/bin/cargo".format(bin_root))
else:
filename = "rustc-dev-{}-{}{}".format(rustc_channel, self.build, tarball_suffix)
self._download_component_helper(
filename, "rustc-dev", tarball_suffix, stage0
)
self.fix_bin_or_dylib("{}/bin/rustc".format(bin_root))
self.fix_bin_or_dylib("{}/bin/rustdoc".format(bin_root))
lib_dir = "{}/lib".format(bin_root)
for lib in os.listdir(lib_dir):
if lib.endswith(".so"):
self.fix_bin_or_dylib(os.path.join(lib_dir, lib))
with output(self.rustc_stamp(stage0)) as rust_stamp:
rust_stamp.write(key)
if self.rustfmt() and self.rustfmt().startswith(bin_root) and (
not os.path.exists(self.rustfmt())
or self.program_out_of_date(
self.rustfmt_stamp(),
"" if self.stage0_rustfmt is None else self.stage0_rustfmt.channel()
)
):
if self.stage0_rustfmt is not None:
tarball_suffix = '.tar.xz' if support_xz() else '.tar.gz'
filename = "rustfmt-{}-{}{}".format(
self.stage0_rustfmt.version, self.build, tarball_suffix,
)
self._download_component_helper(
filename, "rustfmt-preview", tarball_suffix, key=self.stage0_rustfmt.date
)
self.fix_bin_or_dylib("{}/bin/rustfmt".format(bin_root))
self.fix_bin_or_dylib("{}/bin/cargo-fmt".format(bin_root))
with output(self.rustfmt_stamp()) as rustfmt_stamp:
rustfmt_stamp.write(self.stage0_rustfmt.channel())
# Avoid downloading LLVM twice (once for stage0 and once for the master rustc)
if self.downloading_llvm() and stage0:
# We want the most recent LLVM submodule update to avoid downloading
# LLVM more often than necessary.
#
# This git command finds that commit SHA, looking for bors-authored
# merges that modified src/llvm-project or other relevant version
# stamp files.
#
# This works even in a repository that has not yet initialized
# submodules.
top_level = subprocess.check_output([
"git", "rev-parse", "--show-toplevel",
]).decode(sys.getdefaultencoding()).strip()
llvm_sha = subprocess.check_output([
"git", "rev-list", "--author=bors@rust-lang.org", "-n1",
"--merges", "--first-parent", "HEAD",
"--",
"{}/src/llvm-project".format(top_level),
"{}/src/bootstrap/download-ci-llvm-stamp".format(top_level),
# the LLVM shared object file is named `LLVM-12-rust-{version}-nightly`
"{}/src/version".format(top_level)
]).decode(sys.getdefaultencoding()).strip()
llvm_assertions = self.get_toml('assertions', 'llvm') == 'true'
llvm_root = self.llvm_root()
llvm_lib = os.path.join(llvm_root, "lib")
if self.program_out_of_date(self.llvm_stamp(), llvm_sha + str(llvm_assertions)):
self._download_ci_llvm(llvm_sha, llvm_assertions)
for binary in ["llvm-config", "FileCheck"]:
self.fix_bin_or_dylib(os.path.join(llvm_root, "bin", binary))
for lib in os.listdir(llvm_lib):
if lib.endswith(".so"):
self.fix_bin_or_dylib(os.path.join(llvm_lib, lib))
with output(self.llvm_stamp()) as llvm_stamp:
llvm_stamp.write(llvm_sha + str(llvm_assertions))
def downloading_llvm(self):
opt = self.get_toml('download-ci-llvm', 'llvm')
# This is currently all tier 1 targets (since others may not have CI
# artifacts)
# https://doc.rust-lang.org/rustc/platform-support.html#tier-1
supported_platforms = [
"aarch64-unknown-linux-gnu",
"i686-pc-windows-gnu",
"i686-pc-windows-msvc",
"i686-unknown-linux-gnu",
"x86_64-unknown-linux-gnu",
"x86_64-apple-darwin",
"x86_64-pc-windows-gnu",
"x86_64-pc-windows-msvc",
]
return opt == "true" \
or (opt == "if-available" and self.build in supported_platforms)
def _download_component_helper(
self, filename, pattern, tarball_suffix, stage0=True, key=None
):
if key is None:
if stage0:
key = self.stage0_compiler.date
else:
key = self.rustc_commit
cache_dst = os.path.join(self.build_dir, "cache")
rustc_cache = os.path.join(cache_dst, key)
if not os.path.exists(rustc_cache):
os.makedirs(rustc_cache)
if stage0:
base = self._download_url
url = "dist/{}".format(key)
else:
base = "https://ci-artifacts.rust-lang.org"
url = "rustc-builds/{}".format(self.rustc_commit)
tarball = os.path.join(rustc_cache, filename)
if not os.path.exists(tarball):
get(
base,
"{}/{}".format(url, filename),
tarball,
self.checksums_sha256,
verbose=self.verbose,
do_verify=stage0,
)
unpack(tarball, tarball_suffix, self.bin_root(stage0), match=pattern, verbose=self.verbose)
def _download_ci_llvm(self, llvm_sha, llvm_assertions):
cache_prefix = "llvm-{}-{}".format(llvm_sha, llvm_assertions)
cache_dst = os.path.join(self.build_dir, "cache")
rustc_cache = os.path.join(cache_dst, cache_prefix)
if not os.path.exists(rustc_cache):
os.makedirs(rustc_cache)
base = "https://ci-artifacts.rust-lang.org"
url = "rustc-builds/{}".format(llvm_sha)
if llvm_assertions:
url = url.replace('rustc-builds', 'rustc-builds-alt')
# ci-artifacts are only stored as .xz, not .gz
if not support_xz():
print("error: XZ support is required to download LLVM")
print("help: consider disabling `download-ci-llvm` or using python3")
exit(1)
tarball_suffix = '.tar.xz'
filename = "rust-dev-nightly-" + self.build + tarball_suffix
tarball = os.path.join(rustc_cache, filename)
if not os.path.exists(tarball):
get(
base,
"{}/{}".format(url, filename),
tarball,
self.checksums_sha256,
verbose=self.verbose,
do_verify=False,
)
unpack(tarball, tarball_suffix, self.llvm_root(),
match="rust-dev",
verbose=self.verbose)
def fix_bin_or_dylib(self, fname):
"""Modifies the interpreter section of 'fname' to fix the dynamic linker,
or the RPATH section, to fix the dynamic library search path
This method is only required on NixOS and uses the PatchELF utility to
change the interpreter/RPATH of ELF executables.
Please see https://nixos.org/patchelf.html for more information
"""
default_encoding = sys.getdefaultencoding()
try:
ostype = subprocess.check_output(
['uname', '-s']).strip().decode(default_encoding)
except subprocess.CalledProcessError:
return
except OSError as reason:
if getattr(reason, 'winerror', None) is not None:
return
raise reason
if ostype != "Linux":
return
# Use `/etc/os-release` instead of `/etc/NIXOS`.
# The latter one does not exist on NixOS when using tmpfs as root.
try:
with open("/etc/os-release", "r") as f:
if not any(line.strip() == "ID=nixos" for line in f):
return
except FileNotFoundError:
return
if os.path.exists("/lib"):
return
# At this point we're pretty sure the user is running NixOS
nix_os_msg = "info: you seem to be running NixOS. Attempting to patch"
print(nix_os_msg, fname)
# Only build `.nix-deps` once.
nix_deps_dir = self.nix_deps_dir
if not nix_deps_dir:
# Run `nix-build` to "build" each dependency (which will likely reuse
# the existing `/nix/store` copy, or at most download a pre-built copy).
#
# Importantly, we create a gc-root called `.nix-deps` in the `build/`
# directory, but still reference the actual `/nix/store` path in the rpath
# as it makes it significantly more robust against changes to the location of
# the `.nix-deps` location.
#
# bintools: Needed for the path of `ld-linux.so` (via `nix-support/dynamic-linker`).
# zlib: Needed as a system dependency of `libLLVM-*.so`.
# patchelf: Needed for patching ELF binaries (see doc comment above).
nix_deps_dir = "{}/{}".format(self.build_dir, ".nix-deps")
nix_expr = '''
with (import <nixpkgs> {});
symlinkJoin {
name = "rust-stage0-dependencies";
paths = [
zlib
patchelf
stdenv.cc.bintools
];
}
'''
try:
subprocess.check_output([
"nix-build", "-E", nix_expr, "-o", nix_deps_dir,
])
except subprocess.CalledProcessError as reason:
print("warning: failed to call nix-build:", reason)
return
self.nix_deps_dir = nix_deps_dir
patchelf = "{}/bin/patchelf".format(nix_deps_dir)
rpath_entries = [
# Relative default, all binary and dynamic libraries we ship
# appear to have this (even when `../lib` is redundant).
"$ORIGIN/../lib",
os.path.join(os.path.realpath(nix_deps_dir), "lib")
]
patchelf_args = ["--set-rpath", ":".join(rpath_entries)]
if not fname.endswith(".so"):
# Finally, set the corret .interp for binaries
with open("{}/nix-support/dynamic-linker".format(nix_deps_dir)) as dynamic_linker:
patchelf_args += ["--set-interpreter", dynamic_linker.read().rstrip()]
try:
subprocess.check_output([patchelf] + patchelf_args + [fname])
except subprocess.CalledProcessError as reason:
print("warning: failed to call patchelf:", reason)
return
# If `download-rustc` is set, download the most recent commit with CI artifacts
def maybe_download_ci_toolchain(self):
# If `download-rustc` is not set, default to rebuilding.
download_rustc = self.get_toml("download-rustc", section="rust")
if download_rustc is None or download_rustc == "false":
return None
assert download_rustc == "true" or download_rustc == "if-unchanged", download_rustc
# Handle running from a directory other than the top level
rev_parse = ["git", "rev-parse", "--show-toplevel"]
top_level = subprocess.check_output(rev_parse, universal_newlines=True).strip()
compiler = "{}/compiler/".format(top_level)
library = "{}/library/".format(top_level)
# Look for a version to compare to based on the current commit.
# Only commits merged by bors will have CI artifacts.
merge_base = [
"git", "rev-list", "--author=bors@rust-lang.org", "-n1",
"--merges", "--first-parent", "HEAD"
]
commit = subprocess.check_output(merge_base, universal_newlines=True).strip()
# Warn if there were changes to the compiler or standard library since the ancestor commit.
status = subprocess.call(["git", "diff-index", "--quiet", commit, "--", compiler, library])
if status != 0:
if download_rustc == "if-unchanged":
return None
print("warning: `download-rustc` is enabled, but there are changes to \
compiler/ or library/")
if self.verbose:
print("using downloaded stage1 artifacts from CI (commit {})".format(commit))
self.rustc_commit = commit
# FIXME: support downloading artifacts from the beta channel
self.download_toolchain(False, "nightly")
def rustc_stamp(self, stage0):
"""Return the path for .rustc-stamp at the given stage
>>> rb = RustBuild()
>>> rb.build_dir = "build"
>>> rb.rustc_stamp(True) == os.path.join("build", "stage0", ".rustc-stamp")
True
>>> rb.rustc_stamp(False) == os.path.join("build", "ci-rustc", ".rustc-stamp")
True
"""
return os.path.join(self.bin_root(stage0), '.rustc-stamp')
def rustfmt_stamp(self):
"""Return the path for .rustfmt-stamp
>>> rb = RustBuild()
>>> rb.build_dir = "build"
>>> rb.rustfmt_stamp() == os.path.join("build", "stage0", ".rustfmt-stamp")
True
"""
return os.path.join(self.bin_root(True), '.rustfmt-stamp')
def llvm_stamp(self):
"""Return the path for .rustfmt-stamp
>>> rb = RustBuild()
>>> rb.build_dir = "build"
>>> rb.llvm_stamp() == os.path.join("build", "ci-llvm", ".llvm-stamp")
True
"""
return os.path.join(self.llvm_root(), '.llvm-stamp')
def program_out_of_date(self, stamp_path, key):
"""Check if the given program stamp is out of date"""
if not os.path.exists(stamp_path) or self.clean:
return True
with open(stamp_path, 'r') as stamp:
return key != stamp.read()
def bin_root(self, stage0):
"""Return the binary root directory for the given stage
>>> rb = RustBuild()
>>> rb.build_dir = "build"
>>> rb.bin_root(True) == os.path.join("build", "stage0")
True
>>> rb.bin_root(False) == os.path.join("build", "ci-rustc")
True
When the 'build' property is given should be a nested directory:
>>> rb.build = "devel"
>>> rb.bin_root(True) == os.path.join("build", "devel", "stage0")
True
"""
if stage0:
subdir = "stage0"
else:
subdir = "ci-rustc"
return os.path.join(self.build_dir, self.build, subdir)
def llvm_root(self):
"""Return the CI LLVM root directory
>>> rb = RustBuild()
>>> rb.build_dir = "build"
>>> rb.llvm_root() == os.path.join("build", "ci-llvm")
True
When the 'build' property is given should be a nested directory:
>>> rb.build = "devel"
>>> rb.llvm_root() == os.path.join("build", "devel", "ci-llvm")
True
"""
return os.path.join(self.build_dir, self.build, "ci-llvm")
def get_toml(self, key, section=None):
"""Returns the value of the given key in config.toml, otherwise returns None
>>> rb = RustBuild()
>>> rb.config_toml = 'key1 = "value1"\\nkey2 = "value2"'
>>> rb.get_toml("key2")
'value2'
If the key does not exists, the result is None:
>>> rb.get_toml("key3") is None
True
Optionally also matches the section the key appears in
>>> rb.config_toml = '[a]\\nkey = "value1"\\n[b]\\nkey = "value2"'
>>> rb.get_toml('key', 'a')
'value1'
>>> rb.get_toml('key', 'b')
'value2'
>>> rb.get_toml('key', 'c') is None
True
>>> rb.config_toml = 'key1 = true'
>>> rb.get_toml("key1")
'true'
"""
cur_section = None
for line in self.config_toml.splitlines():
section_match = re.match(r'^\s*\[(.*)\]\s*$', line)
if section_match is not None:
cur_section = section_match.group(1)
match = re.match(r'^{}\s*=(.*)$'.format(key), line)
if match is not None:
value = match.group(1)
if section is None or section == cur_section:
return self.get_string(value) or value.strip()
return None
def cargo(self):
"""Return config path for cargo"""
return self.program_config('cargo')
def rustc(self, stage0):
"""Return config path for rustc"""
return self.program_config('rustc', stage0)
def rustfmt(self):
"""Return config path for rustfmt"""
if self.stage0_rustfmt is None:
return None
return self.program_config('rustfmt')
def program_config(self, program, stage0=True):
"""Return config path for the given program at the given stage
>>> rb = RustBuild()
>>> rb.config_toml = 'rustc = "rustc"\\n'
>>> rb.program_config('rustc')
'rustc'
>>> rb.config_toml = ''
>>> cargo_path = rb.program_config('cargo', True)
>>> cargo_path.rstrip(".exe") == os.path.join(rb.bin_root(True),
... "bin", "cargo")
True
>>> cargo_path = rb.program_config('cargo', False)
>>> cargo_path.rstrip(".exe") == os.path.join(rb.bin_root(False),
... "bin", "cargo")
True
"""
config = self.get_toml(program)
if config:
return os.path.expanduser(config)
return os.path.join(self.bin_root(stage0), "bin", "{}{}".format(
program, self.exe_suffix()))
@staticmethod
def get_string(line):
"""Return the value between double quotes
>>> RustBuild.get_string(' "devel" ')
'devel'
>>> RustBuild.get_string(" 'devel' ")
'devel'
>>> RustBuild.get_string('devel') is None
True
>>> RustBuild.get_string(' "devel ')
''
"""
start = line.find('"')
if start != -1:
end = start + 1 + line[start + 1:].find('"')
return line[start + 1:end]
start = line.find('\'')
if start != -1:
end = start + 1 + line[start + 1:].find('\'')
return line[start + 1:end]
return None
@staticmethod
def exe_suffix():
"""Return a suffix for executables"""
if sys.platform == 'win32':
return '.exe'
return ''
def bootstrap_binary(self):
"""Return the path of the bootstrap binary
>>> rb = RustBuild()
>>> rb.build_dir = "build"
>>> rb.bootstrap_binary() == os.path.join("build", "bootstrap",
... "debug", "bootstrap")
True
"""
return os.path.join(self.build_dir, "bootstrap", "debug", "bootstrap")
def build_bootstrap(self):
"""Build bootstrap"""
build_dir = os.path.join(self.build_dir, "bootstrap")
if self.clean and os.path.exists(build_dir):
shutil.rmtree(build_dir)
env = os.environ.copy()
# `CARGO_BUILD_TARGET` breaks bootstrap build.
# See also: <https://github.com/rust-lang/rust/issues/70208>.
if "CARGO_BUILD_TARGET" in env:
del env["CARGO_BUILD_TARGET"]
env["CARGO_TARGET_DIR"] = build_dir
env["RUSTC"] = self.rustc(True)
env["LD_LIBRARY_PATH"] = os.path.join(self.bin_root(True), "lib") + \
(os.pathsep + env["LD_LIBRARY_PATH"]) \
if "LD_LIBRARY_PATH" in env else ""
env["DYLD_LIBRARY_PATH"] = os.path.join(self.bin_root(True), "lib") + \
(os.pathsep + env["DYLD_LIBRARY_PATH"]) \
if "DYLD_LIBRARY_PATH" in env else ""
env["LIBRARY_PATH"] = os.path.join(self.bin_root(True), "lib") + \
(os.pathsep + env["LIBRARY_PATH"]) \
if "LIBRARY_PATH" in env else ""
# preserve existing RUSTFLAGS
env.setdefault("RUSTFLAGS", "")
env["RUSTFLAGS"] += " -Cdebuginfo=2"
build_section = "target.{}".format(self.build)
target_features = []
if self.get_toml("crt-static", build_section) == "true":
target_features += ["+crt-static"]
elif self.get_toml("crt-static", build_section) == "false":
target_features += ["-crt-static"]
if target_features:
env["RUSTFLAGS"] += " -C target-feature=" + (",".join(target_features))
target_linker = self.get_toml("linker", build_section)
if target_linker is not None:
env["RUSTFLAGS"] += " -C linker=" + target_linker
env["RUSTFLAGS"] += " -Wrust_2018_idioms -Wunused_lifetimes"
env["RUSTFLAGS"] += " -Wsemicolon_in_expressions_from_macros"
if self.get_toml("deny-warnings", "rust") != "false":
env["RUSTFLAGS"] += " -Dwarnings"
env["PATH"] = os.path.join(self.bin_root(True), "bin") + \
os.pathsep + env["PATH"]
if not os.path.isfile(self.cargo()):
raise Exception("no cargo executable found at `{}`".format(
self.cargo()))
args = [self.cargo(), "build", "--manifest-path",
os.path.join(self.rust_root, "src/bootstrap/Cargo.toml")]
for _ in range(1, self.verbose):
args.append("--verbose")
if self.use_locked_deps:
args.append("--locked")
if self.use_vendored_sources:
args.append("--frozen")
run(args, env=env, verbose=self.verbose)
def build_triple(self):
"""Build triple as in LLVM
Note that `default_build_triple` is moderately expensive,
so use `self.build` where possible.
"""
config = self.get_toml('build')
if config:
return config
return default_build_triple(self.verbose)
def check_submodule(self, module, slow_submodules):
if not slow_submodules:
checked_out = subprocess.Popen(["git", "rev-parse", "HEAD"],
cwd=os.path.join(self.rust_root, module),
stdout=subprocess.PIPE)
return checked_out
else:
return None
def update_submodule(self, module, checked_out, recorded_submodules):
module_path = os.path.join(self.rust_root, module)
if checked_out is not None:
default_encoding = sys.getdefaultencoding()
checked_out = checked_out.communicate()[0].decode(default_encoding).strip()
if recorded_submodules[module] == checked_out:
return
print("Updating submodule", module)
run(["git", "submodule", "-q", "sync", module],
cwd=self.rust_root, verbose=self.verbose)
update_args = ["git", "submodule", "update", "--init", "--recursive"]
if self.git_version >= distutils.version.LooseVersion("2.11.0"):
update_args.append("--progress")
update_args.append(module)
run(update_args, cwd=self.rust_root, verbose=self.verbose, exception=True)
run(["git", "reset", "-q", "--hard"],
cwd=module_path, verbose=self.verbose)
run(["git", "clean", "-qdfx"],
cwd=module_path, verbose=self.verbose)
def update_submodules(self):