| 1 | #!/usr/bin/env python2
|
| 2 | """
|
| 3 | ninja_lib.py
|
| 4 |
|
| 5 | Runtime options:
|
| 6 |
|
| 7 | CXXFLAGS Additional flags to pass to the C++ compiler
|
| 8 |
|
| 9 | Notes on ninja_syntax.py:
|
| 10 |
|
| 11 | - escape_path() seems wrong?
|
| 12 | - It should really take $ to $$.
|
| 13 | - It doesn't escape newlines
|
| 14 |
|
| 15 | return word.replace('$ ', '$$ ').replace(' ', '$ ').replace(':', '$:')
|
| 16 |
|
| 17 | Ninja shouldn't have used $ and ALSO used shell commands (sh -c)! Better
|
| 18 | solutions:
|
| 19 |
|
| 20 | - Spawn a process with environment variables.
|
| 21 | - use % for substitution instead
|
| 22 |
|
| 23 | - Another problem: Ninja doesn't escape the # comment character like $#, so
|
| 24 | how can you write a string with a # as the first char on a line?
|
| 25 | """
|
| 26 | from __future__ import print_function
|
| 27 |
|
| 28 | import collections
|
| 29 | import os
|
| 30 | import sys
|
| 31 |
|
| 32 |
|
| 33 | def log(msg, *args):
|
| 34 | if args:
|
| 35 | msg = msg % args
|
| 36 | print(msg, file=sys.stderr)
|
| 37 |
|
| 38 |
|
| 39 | # Matrix of configurations
|
| 40 |
|
| 41 | COMPILERS_VARIANTS = [
|
| 42 | ('cxx', 'dbg'),
|
| 43 | ('cxx', 'opt'),
|
| 44 | ('cxx', 'asan'),
|
| 45 | ('cxx', 'asan+gcalways'),
|
| 46 | ('cxx', 'asan32+gcalways'),
|
| 47 | ('cxx', 'ubsan'),
|
| 48 |
|
| 49 | #('clang', 'asan'),
|
| 50 | ('clang', 'dbg'), # compile-quickly
|
| 51 | ('clang', 'opt'), # for comparisons
|
| 52 | ('clang', 'ubsan'), # finds different bugs
|
| 53 | ('clang', 'coverage'),
|
| 54 | ]
|
| 55 |
|
| 56 | GC_PERF_VARIANTS = [
|
| 57 | ('cxx', 'opt+bumpleak'),
|
| 58 | ('cxx', 'opt+bumproot'),
|
| 59 | ('cxx', 'opt+bumpsmall'),
|
| 60 | ('cxx', 'asan+bumpsmall'),
|
| 61 | ('cxx', 'opt+nopool'),
|
| 62 |
|
| 63 | # TODO: should be binary with different files
|
| 64 | ('cxx', 'opt+tcmalloc'),
|
| 65 |
|
| 66 | # For tracing allocations, or debugging
|
| 67 | ('cxx', 'uftrace'),
|
| 68 |
|
| 69 | # Test performance of 32-bit build. (It uses less memory usage, but can be
|
| 70 | # slower.)
|
| 71 | ('cxx', 'opt32'),
|
| 72 | ]
|
| 73 |
|
| 74 | OTHER_VARIANTS = [
|
| 75 | ('cxx', 'opt+bigint'),
|
| 76 | ('cxx', 'opt+souffle'),
|
| 77 | ('cxx', 'asan+bigint'),
|
| 78 | ]
|
| 79 |
|
| 80 | SMALL_TEST_MATRIX = [
|
| 81 | ('cxx', 'asan'),
|
| 82 | ('cxx', 'ubsan'),
|
| 83 | ('clang', 'coverage'),
|
| 84 | ]
|
| 85 |
|
| 86 |
|
| 87 | def ConfigDir(config):
|
| 88 | compiler, variant, more_cxx_flags = config
|
| 89 | if more_cxx_flags is None:
|
| 90 | return '%s-%s' % (compiler, variant)
|
| 91 | else:
|
| 92 | # -D CPP_UNIT_TEST -> D_CPP_UNIT_TEST
|
| 93 | flags_str = more_cxx_flags.replace('-', '').replace(' ', '_')
|
| 94 | return '%s-%s-%s' % (compiler, variant, flags_str)
|
| 95 |
|
| 96 |
|
| 97 | def ObjPath(src_path, config):
|
| 98 | rel_path, _ = os.path.splitext(src_path)
|
| 99 | return '_build/obj/%s/%s.o' % (ConfigDir(config), rel_path)
|
| 100 |
|
| 101 |
|
| 102 | # Used namedtuple since it doesn't have any state
|
| 103 | CcBinary = collections.namedtuple(
|
| 104 | 'CcBinary',
|
| 105 | 'main_cc symlinks implicit deps matrix phony_prefix preprocessed bin_path')
|
| 106 |
|
| 107 |
|
| 108 | class CcLibrary(object):
|
| 109 | """
|
| 110 | Life cycle:
|
| 111 |
|
| 112 | 1. A cc_library is first created
|
| 113 | 2. A cc_binary can depend on it
|
| 114 | - maybe writing rules, and ensuring uniques per configuration
|
| 115 | 3. The link step needs the list of objects
|
| 116 | 4. The tarball needs the list of sources for binary
|
| 117 | """
|
| 118 |
|
| 119 | def __init__(self, label, srcs, implicit, deps, headers,
|
| 120 | generated_headers):
|
| 121 | self.label = label
|
| 122 | self.srcs = srcs # queried by SourcesForBinary
|
| 123 | self.implicit = implicit
|
| 124 | self.deps = deps
|
| 125 | self.headers = headers
|
| 126 | # TODO: asdl() rule should add to this.
|
| 127 | # Generated headers are different than regular headers. The former need an
|
| 128 | # implicit dep in Ninja, while the latter can rely on the .d mechanism.
|
| 129 | self.generated_headers = generated_headers
|
| 130 |
|
| 131 | self.obj_lookup = {} # config -> list of objects
|
| 132 | self.preprocessed_lookup = {} # config -> boolean
|
| 133 |
|
| 134 | def _CalculateImplicit(self, ru):
|
| 135 | """ Compile actions for cc_library() also need implicit deps on generated headers"""
|
| 136 |
|
| 137 | out_deps = set()
|
| 138 | ru._TransitiveClosure(self.label, self.deps, out_deps)
|
| 139 | unique_deps = sorted(out_deps)
|
| 140 |
|
| 141 | implicit = list(self.implicit) # copy
|
| 142 | for label in unique_deps:
|
| 143 | cc_lib = ru.cc_libs[label]
|
| 144 | implicit.extend(cc_lib.generated_headers)
|
| 145 | return implicit
|
| 146 |
|
| 147 | def MaybeWrite(self, ru, config, preprocessed):
|
| 148 | if config not in self.obj_lookup: # already written by some other cc_binary()
|
| 149 | implicit = self._CalculateImplicit(ru)
|
| 150 |
|
| 151 | objects = []
|
| 152 | for src in self.srcs:
|
| 153 | obj = ObjPath(src, config)
|
| 154 | ru.compile(obj, src, self.deps, config, implicit=implicit)
|
| 155 | objects.append(obj)
|
| 156 |
|
| 157 | self.obj_lookup[config] = objects
|
| 158 |
|
| 159 | if preprocessed and config not in self.preprocessed_lookup:
|
| 160 | implicit = self._CalculateImplicit(ru)
|
| 161 |
|
| 162 | for src in self.srcs:
|
| 163 | # no output needed
|
| 164 | ru.compile('',
|
| 165 | src,
|
| 166 | self.deps,
|
| 167 | config,
|
| 168 | implicit=implicit,
|
| 169 | maybe_preprocess=True)
|
| 170 | self.preprocessed_lookup[config] = True
|
| 171 |
|
| 172 |
|
| 173 | class Rules(object):
|
| 174 | """High-level wrapper for NinjaWriter
|
| 175 |
|
| 176 | What should it handle?
|
| 177 |
|
| 178 | - The (compiler, variant) matrix loop
|
| 179 | - Implicit deps for generated code
|
| 180 | - Phony convenience targets
|
| 181 |
|
| 182 | Maybe: exporting data to test runner
|
| 183 |
|
| 184 | Terminology:
|
| 185 |
|
| 186 | Ninja has
|
| 187 | - rules, which are like Bazel "actions"
|
| 188 | - build targets
|
| 189 |
|
| 190 | Our library has:
|
| 191 | - Build config: (compiler, variant), and more later
|
| 192 |
|
| 193 | - Labels: identifiers starting with //, which are higher level than Ninja
|
| 194 | "targets"
|
| 195 | cc_library:
|
| 196 | //mycpp/runtime
|
| 197 |
|
| 198 | //mycpp/examples/expr.asdl
|
| 199 | //frontend/syntax.asdl
|
| 200 |
|
| 201 | - Deps are lists of labels, and have a transitive closure
|
| 202 |
|
| 203 | - H Rules / High level rules? B rules / Boil?
|
| 204 | cc_binary, cc_library, asdl, etc.
|
| 205 | """
|
| 206 |
|
| 207 | def __init__(self, n):
|
| 208 | self.n = n # direct ninja writer
|
| 209 |
|
| 210 | self.cc_bins = [] # list of CcBinary() objects to write
|
| 211 | self.cc_libs = {} # label -> CcLibrary object
|
| 212 | self.cc_binary_deps = {} # main_cc -> list of LABELS
|
| 213 | self.phony = {} # list of phony targets
|
| 214 |
|
| 215 | def AddPhony(self, phony_to_add):
|
| 216 | self.phony.update(phony_to_add)
|
| 217 |
|
| 218 | def WritePhony(self):
|
| 219 | for name in sorted(self.phony):
|
| 220 | targets = self.phony[name]
|
| 221 | if targets:
|
| 222 | self.n.build([name], 'phony', targets)
|
| 223 | self.n.newline()
|
| 224 |
|
| 225 | def WriteRules(self):
|
| 226 | for cc_bin in self.cc_bins:
|
| 227 | self.WriteCcBinary(cc_bin)
|
| 228 |
|
| 229 | def compile(self,
|
| 230 | out_obj,
|
| 231 | in_cc,
|
| 232 | deps,
|
| 233 | config,
|
| 234 | implicit=None,
|
| 235 | maybe_preprocess=False):
|
| 236 | """ .cc -> compiler -> .o """
|
| 237 |
|
| 238 | implicit = implicit or []
|
| 239 |
|
| 240 | compiler, variant, more_cxx_flags = config
|
| 241 | if more_cxx_flags is None:
|
| 242 | flags_str = "''"
|
| 243 | else:
|
| 244 | assert "'" not in more_cxx_flags, more_cxx_flags # can't handle single quotes
|
| 245 | flags_str = "'%s'" % more_cxx_flags
|
| 246 |
|
| 247 | v = [('compiler', compiler), ('variant', variant),
|
| 248 | ('more_cxx_flags', flags_str)]
|
| 249 | if maybe_preprocess:
|
| 250 | # Limit it to certain configs
|
| 251 | if more_cxx_flags is None and variant in ('dbg', 'opt'):
|
| 252 | pre = '_build/preprocessed/%s-%s/%s' % (compiler, variant,
|
| 253 | in_cc)
|
| 254 | self.n.build(pre,
|
| 255 | 'preprocess', [in_cc],
|
| 256 | implicit=implicit,
|
| 257 | variables=v)
|
| 258 | else:
|
| 259 | self.n.build([out_obj],
|
| 260 | 'compile_one', [in_cc],
|
| 261 | implicit=implicit,
|
| 262 | variables=v)
|
| 263 |
|
| 264 | self.n.newline()
|
| 265 |
|
| 266 | def link(self, out_bin, main_obj, deps, config):
|
| 267 | """ list of .o -> linker -> executable, along with stripped version """
|
| 268 | compiler, variant, _ = config
|
| 269 |
|
| 270 | assert isinstance(out_bin, str), out_bin
|
| 271 | assert isinstance(main_obj, str), main_obj
|
| 272 |
|
| 273 | objects = [main_obj]
|
| 274 | for label in deps:
|
| 275 | key = (label, compiler, variant)
|
| 276 | try:
|
| 277 | cc_lib = self.cc_libs[label]
|
| 278 | except KeyError:
|
| 279 | raise RuntimeError("Couldn't resolve label %r" % label)
|
| 280 |
|
| 281 | o = cc_lib.obj_lookup[config]
|
| 282 | objects.extend(o)
|
| 283 |
|
| 284 | v = [('compiler', compiler), ('variant', variant),
|
| 285 | ('more_link_flags', "''")]
|
| 286 | self.n.build([out_bin], 'link', objects, variables=v)
|
| 287 | self.n.newline()
|
| 288 |
|
| 289 | # Strip any .opt binaries
|
| 290 | if variant.startswith('opt') or variant.startswith('opt32'):
|
| 291 | stripped = out_bin + '.stripped'
|
| 292 | symbols = out_bin + '.symbols'
|
| 293 | self.n.build([stripped, symbols], 'strip', [out_bin])
|
| 294 | self.n.newline()
|
| 295 |
|
| 296 | def comment(self, s):
|
| 297 | self.n.comment(s)
|
| 298 | self.n.newline()
|
| 299 |
|
| 300 | def cc_library(
|
| 301 | self,
|
| 302 | label,
|
| 303 | srcs=None,
|
| 304 | implicit=None,
|
| 305 | deps=None,
|
| 306 | # note: headers is only used for tarball manifest, not compiler command line
|
| 307 | headers=None,
|
| 308 | generated_headers=None):
|
| 309 |
|
| 310 | # srcs = [] is allowed for _gen/asdl/hnode.asdl.h
|
| 311 | if srcs is None:
|
| 312 | raise RuntimeError('cc_library %r requires srcs' % label)
|
| 313 |
|
| 314 | implicit = implicit or []
|
| 315 | deps = deps or []
|
| 316 | headers = headers or []
|
| 317 | generated_headers = generated_headers or []
|
| 318 |
|
| 319 | if label in self.cc_libs:
|
| 320 | raise RuntimeError('%s was already defined' % label)
|
| 321 |
|
| 322 | self.cc_libs[label] = CcLibrary(label, srcs, implicit, deps, headers,
|
| 323 | generated_headers)
|
| 324 |
|
| 325 | def _TransitiveClosure(self, name, deps, unique_out):
|
| 326 | """
|
| 327 | Args:
|
| 328 | name: for error messages
|
| 329 | """
|
| 330 | for label in deps:
|
| 331 | if label in unique_out:
|
| 332 | continue
|
| 333 | unique_out.add(label)
|
| 334 |
|
| 335 | try:
|
| 336 | cc_lib = self.cc_libs[label]
|
| 337 | except KeyError:
|
| 338 | raise RuntimeError('Undefined label %s in %s' % (label, name))
|
| 339 |
|
| 340 | self._TransitiveClosure(cc_lib.label, cc_lib.deps, unique_out)
|
| 341 |
|
| 342 | def cc_binary(
|
| 343 | self,
|
| 344 | main_cc,
|
| 345 | symlinks=None,
|
| 346 | implicit=None, # for COMPILE action, not link action
|
| 347 | deps=None,
|
| 348 | matrix=None, # $compiler $variant
|
| 349 | phony_prefix=None,
|
| 350 | preprocessed=False,
|
| 351 | bin_path=None, # default is _bin/$compiler-$variant/rel/path
|
| 352 | ):
|
| 353 | symlinks = symlinks or []
|
| 354 | implicit = implicit or []
|
| 355 | deps = deps or []
|
| 356 | if not matrix:
|
| 357 | raise RuntimeError("Config matrix required")
|
| 358 |
|
| 359 | cc_bin = CcBinary(main_cc, symlinks, implicit, deps, matrix,
|
| 360 | phony_prefix, preprocessed, bin_path)
|
| 361 |
|
| 362 | self.cc_bins.append(cc_bin)
|
| 363 |
|
| 364 | def WriteCcBinary(self, cc_bin):
|
| 365 | c = cc_bin
|
| 366 |
|
| 367 | out_deps = set()
|
| 368 | self._TransitiveClosure(c.main_cc, c.deps, out_deps)
|
| 369 | unique_deps = sorted(out_deps)
|
| 370 |
|
| 371 | # save for SourcesForBinary()
|
| 372 | self.cc_binary_deps[c.main_cc] = unique_deps
|
| 373 |
|
| 374 | compile_imp = list(c.implicit)
|
| 375 | for label in unique_deps:
|
| 376 | cc_lib = self.cc_libs[label] # should exit
|
| 377 | # compile actions of binaries that have ASDL label deps need the
|
| 378 | # generated header as implicit dep
|
| 379 | compile_imp.extend(cc_lib.generated_headers)
|
| 380 |
|
| 381 | for config in c.matrix:
|
| 382 | if len(config) == 2:
|
| 383 | config = (config[0], config[1], None)
|
| 384 |
|
| 385 | for label in unique_deps:
|
| 386 | cc_lib = self.cc_libs[label] # should exit
|
| 387 |
|
| 388 | cc_lib.MaybeWrite(self, config, c.preprocessed)
|
| 389 |
|
| 390 | # Compile main object, maybe with IMPLICIT headers deps
|
| 391 | main_obj = ObjPath(c.main_cc, config)
|
| 392 | self.compile(main_obj,
|
| 393 | c.main_cc,
|
| 394 | c.deps,
|
| 395 | config,
|
| 396 | implicit=compile_imp)
|
| 397 | if c.preprocessed:
|
| 398 | self.compile('',
|
| 399 | c.main_cc,
|
| 400 | c.deps,
|
| 401 | config,
|
| 402 | implicit=compile_imp,
|
| 403 | maybe_preprocess=True)
|
| 404 |
|
| 405 | config_dir = ConfigDir(config)
|
| 406 | bin_dir = '_bin/%s' % config_dir
|
| 407 |
|
| 408 | if c.bin_path:
|
| 409 | # e.g. _bin/cxx-dbg/oils_for_unix
|
| 410 | bin_ = '%s/%s' % (bin_dir, c.bin_path)
|
| 411 | bin_subdir, _, bin_name = c.bin_path.rpartition('/')
|
| 412 | if bin_subdir:
|
| 413 | bin_dir = '%s/%s' % (bin_dir, bin_subdir)
|
| 414 | else:
|
| 415 | bin_name = c.bin_path
|
| 416 |
|
| 417 | else:
|
| 418 | # e.g. _gen/mycpp/examples/classes.mycpp
|
| 419 | rel_path, _ = os.path.splitext(c.main_cc)
|
| 420 |
|
| 421 | # Put binary in _bin/cxx-dbg/mycpp/examples, not _bin/cxx-dbg/_gen/mycpp/examples
|
| 422 | if rel_path.startswith('_gen/'):
|
| 423 | rel_path = rel_path[len('_gen/'):]
|
| 424 |
|
| 425 | bin_ = '%s/%s' % (bin_dir, rel_path)
|
| 426 |
|
| 427 | # Link with OBJECT deps
|
| 428 | self.link(bin_, main_obj, unique_deps, config)
|
| 429 |
|
| 430 | # Make symlinks
|
| 431 | for symlink in c.symlinks:
|
| 432 | # Must explicitly specify bin_path to have a symlink, for now
|
| 433 | assert c.bin_path is not None
|
| 434 | self.n.build(['%s/%s' % (bin_dir, symlink)],
|
| 435 | 'symlink', [bin_],
|
| 436 | variables=[('dir', bin_dir),
|
| 437 | ('target', bin_name),
|
| 438 | ('new', symlink)])
|
| 439 | self.n.newline()
|
| 440 |
|
| 441 | if c.phony_prefix:
|
| 442 | key = '%s-%s' % (c.phony_prefix, config_dir)
|
| 443 | if key not in self.phony:
|
| 444 | self.phony[key] = []
|
| 445 | self.phony[key].append(bin_)
|
| 446 |
|
| 447 | def SourcesForBinary(self, main_cc):
|
| 448 | """
|
| 449 | Used for preprocessed metrics, release tarball, _build/oils.sh, etc.
|
| 450 | """
|
| 451 | deps = self.cc_binary_deps[main_cc]
|
| 452 | sources = [main_cc]
|
| 453 | for label in deps:
|
| 454 | sources.extend(self.cc_libs[label].srcs)
|
| 455 | return sources
|
| 456 |
|
| 457 | def HeadersForBinary(self, main_cc):
|
| 458 | deps = self.cc_binary_deps[main_cc]
|
| 459 | headers = []
|
| 460 | for label in deps:
|
| 461 | headers.extend(self.cc_libs[label].headers)
|
| 462 | headers.extend(self.cc_libs[label].generated_headers)
|
| 463 | return headers
|
| 464 |
|
| 465 | def asdl_library(self, asdl_path, deps=None, pretty_print_methods=True):
|
| 466 |
|
| 467 | deps = deps or []
|
| 468 |
|
| 469 | # SYSTEM header, _gen/asdl/hnode.asdl.h
|
| 470 | deps.append('//asdl/hnode.asdl')
|
| 471 | deps.append('//display/pretty.asdl')
|
| 472 |
|
| 473 | # to create _gen/mycpp/examples/expr.asdl.h
|
| 474 | prefix = '_gen/%s' % asdl_path
|
| 475 |
|
| 476 | out_cc = prefix + '.cc'
|
| 477 | out_header = prefix + '.h'
|
| 478 |
|
| 479 | asdl_flags = ''
|
| 480 |
|
| 481 | if pretty_print_methods:
|
| 482 | outputs = [out_cc, out_header]
|
| 483 | else:
|
| 484 | outputs = [out_header]
|
| 485 | asdl_flags += '--no-pretty-print-methods'
|
| 486 |
|
| 487 | debug_mod = prefix + '_debug.py'
|
| 488 | outputs.append(debug_mod)
|
| 489 |
|
| 490 | # Generating syntax_asdl.h does NOT depend on hnode_asdl.h existing ...
|
| 491 | self.n.build(outputs,
|
| 492 | 'asdl-cpp', [asdl_path],
|
| 493 | implicit=['_bin/shwrap/asdl_main'],
|
| 494 | variables=[
|
| 495 | ('action', 'cpp'),
|
| 496 | ('out_prefix', prefix),
|
| 497 | ('asdl_flags', asdl_flags),
|
| 498 | ('debug_mod', debug_mod),
|
| 499 | ])
|
| 500 | self.n.newline()
|
| 501 |
|
| 502 | # ... But COMPILING anything that #includes it does.
|
| 503 | # Note: assumes there's a build rule for this "system" ASDL schema
|
| 504 |
|
| 505 | srcs = [out_cc] if pretty_print_methods else []
|
| 506 | # Define lazy CC library
|
| 507 | self.cc_library(
|
| 508 | '//' + asdl_path,
|
| 509 | srcs=srcs,
|
| 510 | deps=deps,
|
| 511 | # For compile_one steps of files that #include this ASDL file
|
| 512 | generated_headers=[out_header],
|
| 513 | )
|
| 514 |
|
| 515 | def py_binary(self, main_py, deps_base_dir='_build/NINJA', template='py'):
|
| 516 | """
|
| 517 | Wrapper for Python script with dynamically discovered deps
|
| 518 | """
|
| 519 | rel_path, _ = os.path.splitext(main_py)
|
| 520 | py_module = rel_path.replace(
|
| 521 | '/', '.') # asdl/asdl_main.py -> asdl.asdl_main
|
| 522 |
|
| 523 | deps_path = os.path.join(deps_base_dir, py_module, 'deps.txt')
|
| 524 | with open(deps_path) as f:
|
| 525 | deps = [line.strip() for line in f]
|
| 526 |
|
| 527 | deps.remove(main_py) # raises ValueError if it's not there
|
| 528 |
|
| 529 | basename = os.path.basename(rel_path)
|
| 530 | self.n.build('_bin/shwrap/%s' % basename,
|
| 531 | 'write-shwrap', [main_py] + deps,
|
| 532 | variables=[('template', template)])
|
| 533 | self.n.newline()
|
| 534 |
|
| 535 | def souffle_binary(self, souffle_cpp):
|
| 536 | """
|
| 537 | Compile souffle C++ into a native executable.
|
| 538 | """
|
| 539 | rel_path, _ = os.path.splitext(souffle_cpp)
|
| 540 | basename = os.path.basename(rel_path)
|
| 541 |
|
| 542 | souffle_obj = '_build/obj/datalog/%s.o' % basename
|
| 543 | self.n.build([souffle_obj],
|
| 544 | 'compile_one',
|
| 545 | souffle_cpp,
|
| 546 | variables=[('compiler', 'cxx'), ('variant', 'opt'),
|
| 547 | ('more_cxx_flags', "'-Ivendor -std=c++17'")])
|
| 548 |
|
| 549 | souffle_bin = '_bin/datalog/%s' % basename
|
| 550 | self.n.build([souffle_bin],
|
| 551 | 'link',
|
| 552 | souffle_obj,
|
| 553 | variables=[('compiler', 'cxx'), ('variant', 'opt'),
|
| 554 | ('more_link_flags', "'-lstdc++fs'")])
|
| 555 |
|
| 556 | self.n.newline()
|