xref: /llvm-project/flang/lib/Frontend/CompilerInvocation.cpp (revision 7416e8a8431a0f2711be9d16e111d1781b74df96)
1 //===- CompilerInvocation.cpp ---------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "flang/Frontend/CompilerInvocation.h"
10 #include "flang/Common/Fortran-features.h"
11 #include "flang/Frontend/PreprocessorOptions.h"
12 #include "flang/Semantics/semantics.h"
13 #include "flang/Version.inc"
14 #include "clang/Basic/AllDiagnostics.h"
15 #include "clang/Basic/DiagnosticDriver.h"
16 #include "clang/Basic/DiagnosticOptions.h"
17 #include "clang/Driver/DriverDiagnostic.h"
18 #include "clang/Driver/Options.h"
19 #include "llvm/ADT/StringRef.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/Option/Arg.h"
22 #include "llvm/Option/ArgList.h"
23 #include "llvm/Option/OptTable.h"
24 #include "llvm/Support/FileSystem.h"
25 #include "llvm/Support/FileUtilities.h"
26 #include "llvm/Support/Process.h"
27 #include "llvm/Support/raw_ostream.h"
28 #include <memory>
29 
30 using namespace Fortran::frontend;
31 
32 //===----------------------------------------------------------------------===//
33 // Initialization.
34 //===----------------------------------------------------------------------===//
35 CompilerInvocationBase::CompilerInvocationBase()
36     : diagnosticOpts_(new clang::DiagnosticOptions()),
37       preprocessorOpts_(new PreprocessorOptions()) {}
38 
39 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &x)
40     : diagnosticOpts_(new clang::DiagnosticOptions(x.GetDiagnosticOpts())),
41       preprocessorOpts_(new PreprocessorOptions(x.preprocessorOpts())) {}
42 
43 CompilerInvocationBase::~CompilerInvocationBase() = default;
44 
45 //===----------------------------------------------------------------------===//
46 // Deserialization (from args)
47 //===----------------------------------------------------------------------===//
48 static bool parseShowColorsArgs(
49     const llvm::opt::ArgList &args, bool defaultColor) {
50   // Color diagnostics default to auto ("on" if terminal supports) in the driver
51   // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
52   // Support both clang's -f[no-]color-diagnostics and gcc's
53   // -f[no-]diagnostics-colors[=never|always|auto].
54   enum {
55     Colors_On,
56     Colors_Off,
57     Colors_Auto
58   } ShowColors = defaultColor ? Colors_Auto : Colors_Off;
59 
60   for (auto *a : args) {
61     const llvm::opt::Option &O = a->getOption();
62     if (O.matches(clang::driver::options::OPT_fcolor_diagnostics) ||
63         O.matches(clang::driver::options::OPT_fdiagnostics_color)) {
64       ShowColors = Colors_On;
65     } else if (O.matches(clang::driver::options::OPT_fno_color_diagnostics) ||
66         O.matches(clang::driver::options::OPT_fno_diagnostics_color)) {
67       ShowColors = Colors_Off;
68     } else if (O.matches(clang::driver::options::OPT_fdiagnostics_color_EQ)) {
69       llvm::StringRef value(a->getValue());
70       if (value == "always")
71         ShowColors = Colors_On;
72       else if (value == "never")
73         ShowColors = Colors_Off;
74       else if (value == "auto")
75         ShowColors = Colors_Auto;
76     }
77   }
78 
79   return ShowColors == Colors_On ||
80       (ShowColors == Colors_Auto && llvm::sys::Process::StandardErrHasColors());
81 }
82 
83 bool Fortran::frontend::ParseDiagnosticArgs(clang::DiagnosticOptions &opts,
84     llvm::opt::ArgList &args, bool defaultDiagColor) {
85   opts.ShowColors = parseShowColorsArgs(args, defaultDiagColor);
86 
87   return true;
88 }
89 
90 // Tweak the frontend configuration based on the frontend action
91 static void setUpFrontendBasedOnAction(FrontendOptions &opts) {
92   assert(opts.programAction_ != Fortran::frontend::InvalidAction &&
93       "Fortran frontend action not set!");
94 
95   if (opts.programAction_ == DebugDumpParsingLog)
96     opts.instrumentedParse_ = true;
97 }
98 
99 static InputKind ParseFrontendArgs(FrontendOptions &opts,
100     llvm::opt::ArgList &args, clang::DiagnosticsEngine &diags) {
101 
102   // By default the frontend driver creates a ParseSyntaxOnly action.
103   opts.programAction_ = ParseSyntaxOnly;
104 
105   // Identify the action (i.e. opts.ProgramAction)
106   if (const llvm::opt::Arg *a =
107           args.getLastArg(clang::driver::options::OPT_Action_Group)) {
108     switch (a->getOption().getID()) {
109     default: {
110       llvm_unreachable("Invalid option in group!");
111     }
112     case clang::driver::options::OPT_test_io:
113       opts.programAction_ = InputOutputTest;
114       break;
115     case clang::driver::options::OPT_E:
116       opts.programAction_ = PrintPreprocessedInput;
117       break;
118     case clang::driver::options::OPT_fsyntax_only:
119       opts.programAction_ = ParseSyntaxOnly;
120       break;
121     case clang::driver::options::OPT_emit_obj:
122       opts.programAction_ = EmitObj;
123       break;
124     case clang::driver::options::OPT_fdebug_unparse:
125       opts.programAction_ = DebugUnparse;
126       break;
127     case clang::driver::options::OPT_fdebug_unparse_with_symbols:
128       opts.programAction_ = DebugUnparseWithSymbols;
129       break;
130     case clang::driver::options::OPT_fdebug_dump_symbols:
131       opts.programAction_ = DebugDumpSymbols;
132       break;
133     case clang::driver::options::OPT_fdebug_dump_parse_tree:
134       opts.programAction_ = DebugDumpParseTree;
135       break;
136     case clang::driver::options::OPT_fdebug_dump_provenance:
137       opts.programAction_ = DebugDumpProvenance;
138       break;
139     case clang::driver::options::OPT_fdebug_dump_parsing_log:
140       opts.programAction_ = DebugDumpParsingLog;
141       break;
142     case clang::driver::options::OPT_fdebug_measure_parse_tree:
143       opts.programAction_ = DebugMeasureParseTree;
144       break;
145     case clang::driver::options::OPT_fdebug_pre_fir_tree:
146       opts.programAction_ = DebugPreFIRTree;
147       break;
148     case clang::driver::options::OPT_fget_symbols_sources:
149       opts.programAction_ = GetSymbolsSources;
150       break;
151 
152       // TODO:
153       // case calng::driver::options::OPT_emit_llvm:
154       // case clang::driver::options::OPT_emit_llvm_only:
155       // case clang::driver::options::OPT_emit_codegen_only:
156       // case clang::driver::options::OPT_emit_module:
157       // (...)
158     }
159   }
160 
161   opts.outputFile_ = args.getLastArgValue(clang::driver::options::OPT_o);
162   opts.showHelp_ = args.hasArg(clang::driver::options::OPT_help);
163   opts.showVersion_ = args.hasArg(clang::driver::options::OPT_version);
164 
165   // Get the input kind (from the value passed via `-x`)
166   InputKind dashX(Language::Unknown);
167   if (const llvm::opt::Arg *a =
168           args.getLastArg(clang::driver::options::OPT_x)) {
169     llvm::StringRef XValue = a->getValue();
170     // Principal languages.
171     dashX = llvm::StringSwitch<InputKind>(XValue)
172                 .Case("f90", Language::Fortran)
173                 .Default(Language::Unknown);
174 
175     // Some special cases cannot be combined with suffixes.
176     if (dashX.IsUnknown())
177       dashX = llvm::StringSwitch<InputKind>(XValue)
178                   .Case("ir", Language::LLVM_IR)
179                   .Default(Language::Unknown);
180 
181     if (dashX.IsUnknown())
182       diags.Report(clang::diag::err_drv_invalid_value)
183           << a->getAsString(args) << a->getValue();
184   }
185 
186   // Collect the input files and save them in our instance of FrontendOptions.
187   std::vector<std::string> inputs =
188       args.getAllArgValues(clang::driver::options::OPT_INPUT);
189   opts.inputs_.clear();
190   if (inputs.empty())
191     // '-' is the default input if none is given.
192     inputs.push_back("-");
193   for (unsigned i = 0, e = inputs.size(); i != e; ++i) {
194     InputKind ik = dashX;
195     if (ik.IsUnknown()) {
196       ik = FrontendOptions::GetInputKindForExtension(
197           llvm::StringRef(inputs[i]).rsplit('.').second);
198       if (ik.IsUnknown())
199         ik = Language::Unknown;
200       if (i == 0)
201         dashX = ik;
202     }
203 
204     opts.inputs_.emplace_back(std::move(inputs[i]), ik);
205   }
206 
207   // Set fortranForm_ based on options -ffree-form and -ffixed-form.
208   if (const auto *arg = args.getLastArg(clang::driver::options::OPT_ffixed_form,
209           clang::driver::options::OPT_ffree_form)) {
210     opts.fortranForm_ =
211         arg->getOption().matches(clang::driver::options::OPT_ffixed_form)
212         ? FortranForm::FixedForm
213         : FortranForm::FreeForm;
214   }
215 
216   // Set fixedFormColumns_ based on -ffixed-line-length=<value>
217   if (const auto *arg =
218           args.getLastArg(clang::driver::options::OPT_ffixed_line_length_EQ)) {
219     llvm::StringRef argValue = llvm::StringRef(arg->getValue());
220     std::int64_t columns = -1;
221     if (argValue == "none") {
222       columns = 0;
223     } else if (argValue.getAsInteger(/*Radix=*/10, columns)) {
224       columns = -1;
225     }
226     if (columns < 0) {
227       diags.Report(clang::diag::err_drv_invalid_value_with_suggestion)
228           << arg->getOption().getName() << arg->getValue()
229           << "value must be 'none' or a non-negative integer";
230     } else if (columns == 0) {
231       opts.fixedFormColumns_ = 1000000;
232     } else if (columns < 7) {
233       diags.Report(clang::diag::err_drv_invalid_value_with_suggestion)
234           << arg->getOption().getName() << arg->getValue()
235           << "value must be at least seven";
236     } else {
237       opts.fixedFormColumns_ = columns;
238     }
239   }
240 
241   if (const llvm::opt::Arg *arg =
242           args.getLastArg(clang::driver::options::OPT_fimplicit_none,
243               clang::driver::options::OPT_fno_implicit_none)) {
244     opts.features_.Enable(
245         Fortran::common::LanguageFeature::ImplicitNoneTypeAlways,
246         arg->getOption().matches(clang::driver::options::OPT_fimplicit_none));
247   }
248   if (const llvm::opt::Arg *arg =
249           args.getLastArg(clang::driver::options::OPT_fbackslash,
250               clang::driver::options::OPT_fno_backslash)) {
251     opts.features_.Enable(Fortran::common::LanguageFeature::BackslashEscapes,
252         arg->getOption().matches(clang::driver::options::OPT_fbackslash));
253   }
254   if (const llvm::opt::Arg *arg =
255           args.getLastArg(clang::driver::options::OPT_flogical_abbreviations,
256               clang::driver::options::OPT_fno_logical_abbreviations)) {
257     opts.features_.Enable(
258         Fortran::common::LanguageFeature::LogicalAbbreviations,
259         arg->getOption().matches(
260             clang::driver::options::OPT_flogical_abbreviations));
261   }
262   if (const llvm::opt::Arg *arg =
263           args.getLastArg(clang::driver::options::OPT_fxor_operator,
264               clang::driver::options::OPT_fno_xor_operator)) {
265     opts.features_.Enable(Fortran::common::LanguageFeature::XOROperator,
266         arg->getOption().matches(clang::driver::options::OPT_fxor_operator));
267   }
268   if (args.hasArg(
269           clang::driver::options::OPT_falternative_parameter_statement)) {
270     opts.features_.Enable(Fortran::common::LanguageFeature::OldStyleParameter);
271   }
272   if (const llvm::opt::Arg *arg =
273           args.getLastArg(clang::driver::options::OPT_finput_charset_EQ)) {
274     llvm::StringRef argValue = arg->getValue();
275     if (argValue == "utf-8") {
276       opts.encoding_ = Fortran::parser::Encoding::UTF_8;
277     } else if (argValue == "latin-1") {
278       opts.encoding_ = Fortran::parser::Encoding::LATIN_1;
279     } else {
280       diags.Report(clang::diag::err_drv_invalid_value)
281           << arg->getAsString(args) << argValue;
282     }
283   }
284 
285   setUpFrontendBasedOnAction(opts);
286 
287   return dashX;
288 }
289 
290 // Generate the path to look for intrinsic modules
291 static std::string getIntrinsicDir() {
292   // TODO: Find a system independent API
293   llvm::SmallString<128> driverPath;
294   driverPath.assign(llvm::sys::fs::getMainExecutable(nullptr, nullptr));
295   llvm::sys::path::remove_filename(driverPath);
296   driverPath.append("/../include/flang/");
297   return std::string(driverPath);
298 }
299 
300 /// Parses all preprocessor input arguments and populates the preprocessor
301 /// options accordingly.
302 ///
303 /// \param [in] opts The preprocessor options instance
304 /// \param [out] args The list of input arguments
305 static void parsePreprocessorArgs(
306     Fortran::frontend::PreprocessorOptions &opts, llvm::opt::ArgList &args) {
307   // Add macros from the command line.
308   for (const auto *currentArg : args.filtered(
309            clang::driver::options::OPT_D, clang::driver::options::OPT_U)) {
310     if (currentArg->getOption().matches(clang::driver::options::OPT_D)) {
311       opts.addMacroDef(currentArg->getValue());
312     } else {
313       opts.addMacroUndef(currentArg->getValue());
314     }
315   }
316 
317   // Add the ordered list of -I's.
318   for (const auto *currentArg : args.filtered(clang::driver::options::OPT_I))
319     opts.searchDirectoriesFromDashI.emplace_back(currentArg->getValue());
320 
321   // Prepend the ordered list of -intrinsic-modules-path
322   // to the default location to search.
323   for (const auto *currentArg :
324       args.filtered(clang::driver::options::OPT_fintrinsic_modules_path))
325     opts.searchDirectoriesFromIntrModPath.emplace_back(currentArg->getValue());
326 }
327 
328 /// Parses all semantic related arguments and populates the variables
329 /// options accordingly.
330 static void parseSemaArgs(CompilerInvocation &res, llvm::opt::ArgList &args,
331     clang::DiagnosticsEngine &diags) {
332 
333   // -J/module-dir option
334   auto moduleDirList =
335       args.getAllArgValues(clang::driver::options::OPT_module_dir);
336   // User can only specify -J/-module-dir once
337   // https://gcc.gnu.org/onlinedocs/gfortran/Directory-Options.html
338   if (moduleDirList.size() > 1) {
339     const unsigned diagID =
340         diags.getCustomDiagID(clang::DiagnosticsEngine::Error,
341             "Only one '-module-dir/-J' option allowed");
342     diags.Report(diagID);
343   }
344   if (moduleDirList.size() == 1)
345     res.SetModuleDir(moduleDirList[0]);
346 
347   // -fdebug-module-writer option
348   if (args.hasArg(clang::driver::options::OPT_fdebug_module_writer)) {
349     res.SetDebugModuleDir(true);
350   }
351 }
352 
353 /// Parses all diagnostics related arguments and populates the variables
354 /// options accordingly.
355 static void parseDiagArgs(CompilerInvocation &res, llvm::opt::ArgList &args,
356     clang::DiagnosticsEngine &diags) {
357   // -Werror option
358   // TODO: Currently throws a Diagnostic for anything other than -W<error>,
359   // this has to change when other -W<opt>'s are supported.
360   if (args.hasArg(clang::driver::options::OPT_W_Joined)) {
361     if (args.getLastArgValue(clang::driver::options::OPT_W_Joined)
362             .equals("error")) {
363       res.SetWarnAsErr(true);
364     } else {
365       const unsigned diagID =
366           diags.getCustomDiagID(clang::DiagnosticsEngine::Error,
367               "Only `-Werror` is supported currently.");
368       diags.Report(diagID);
369     }
370   }
371 }
372 
373 /// Parses all Dialect related arguments and populates the variables
374 /// options accordingly.
375 static void parseDialectArgs(CompilerInvocation &res, llvm::opt::ArgList &args,
376     clang::DiagnosticsEngine &diags) {
377 
378   // -fdefault* family
379   if (args.hasArg(clang::driver::options::OPT_fdefault_real_8)) {
380     res.defaultKinds().set_defaultRealKind(8);
381     res.defaultKinds().set_doublePrecisionKind(16);
382   }
383   if (args.hasArg(clang::driver::options::OPT_fdefault_integer_8)) {
384     res.defaultKinds().set_defaultIntegerKind(8);
385     res.defaultKinds().set_subscriptIntegerKind(8);
386     res.defaultKinds().set_sizeIntegerKind(8);
387   }
388   if (args.hasArg(clang::driver::options::OPT_fdefault_double_8)) {
389     if (!args.hasArg(clang::driver::options::OPT_fdefault_real_8)) {
390       // -fdefault-double-8 has to be used with -fdefault-real-8
391       // to be compatible with gfortran
392       const unsigned diagID =
393           diags.getCustomDiagID(clang::DiagnosticsEngine::Error,
394               "Use of `-fdefault-double-8` requires `-fdefault-real-8`");
395       diags.Report(diagID);
396     }
397     // https://gcc.gnu.org/onlinedocs/gfortran/Fortran-Dialect-Options.html
398     res.defaultKinds().set_doublePrecisionKind(8);
399   }
400   if (args.hasArg(clang::driver::options::OPT_flarge_sizes))
401     res.defaultKinds().set_sizeIntegerKind(8);
402 
403   // -fopenmp and -fopenacc
404   if (args.hasArg(clang::driver::options::OPT_fopenacc)) {
405     res.frontendOpts().features_.Enable(
406         Fortran::common::LanguageFeature::OpenACC);
407   }
408   if (args.hasArg(clang::driver::options::OPT_fopenmp)) {
409     res.frontendOpts().features_.Enable(
410         Fortran::common::LanguageFeature::OpenMP);
411   }
412 
413   // -pedantic
414   if (args.hasArg(clang::driver::options::OPT_pedantic)) {
415     res.set_EnableConformanceChecks();
416   }
417   // -std=f2018 (currently this implies -pedantic)
418   // TODO: Set proper options when more fortran standards
419   // are supported.
420   if (args.hasArg(clang::driver::options::OPT_std_EQ)) {
421     auto standard = args.getLastArgValue(clang::driver::options::OPT_std_EQ);
422     // We only allow f2018 as the given standard
423     if (standard.equals("f2018")) {
424       res.set_EnableConformanceChecks();
425     } else {
426       const unsigned diagID =
427           diags.getCustomDiagID(clang::DiagnosticsEngine::Error,
428               "Only -std=f2018 is allowed currently.");
429       diags.Report(diagID);
430     }
431   }
432   return;
433 }
434 
435 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &res,
436     llvm::ArrayRef<const char *> commandLineArgs,
437     clang::DiagnosticsEngine &diags) {
438 
439   bool success = true;
440 
441   // Parse the arguments
442   const llvm::opt::OptTable &opts = clang::driver::getDriverOptTable();
443   const unsigned includedFlagsBitmask = clang::driver::options::FC1Option;
444   unsigned missingArgIndex, missingArgCount;
445   llvm::opt::InputArgList args = opts.ParseArgs(
446       commandLineArgs, missingArgIndex, missingArgCount, includedFlagsBitmask);
447 
448   // Issue errors on unknown arguments
449   for (const auto *a : args.filtered(clang::driver::options::OPT_UNKNOWN)) {
450     auto argString = a->getAsString(args);
451     std::string nearest;
452     if (opts.findNearest(argString, nearest, includedFlagsBitmask) > 1)
453       diags.Report(clang::diag::err_drv_unknown_argument) << argString;
454     else
455       diags.Report(clang::diag::err_drv_unknown_argument_with_suggestion)
456           << argString << nearest;
457     success = false;
458   }
459 
460   // Parse the frontend args
461   ParseFrontendArgs(res.frontendOpts(), args, diags);
462   // Parse the preprocessor args
463   parsePreprocessorArgs(res.preprocessorOpts(), args);
464   // Parse semantic args
465   parseSemaArgs(res, args, diags);
466   // Parse dialect arguments
467   parseDialectArgs(res, args, diags);
468   // Parse diagnostic arguments
469   parseDiagArgs(res, args, diags);
470 
471   return success;
472 }
473 
474 /// Collect the macro definitions provided by the given preprocessor
475 /// options into the parser options.
476 ///
477 /// \param [in] ppOpts The preprocessor options
478 /// \param [out] opts The fortran options
479 static void collectMacroDefinitions(
480     const PreprocessorOptions &ppOpts, Fortran::parser::Options &opts) {
481   for (unsigned i = 0, n = ppOpts.macros.size(); i != n; ++i) {
482     llvm::StringRef macro = ppOpts.macros[i].first;
483     bool isUndef = ppOpts.macros[i].second;
484 
485     std::pair<llvm::StringRef, llvm::StringRef> macroPair = macro.split('=');
486     llvm::StringRef macroName = macroPair.first;
487     llvm::StringRef macroBody = macroPair.second;
488 
489     // For an #undef'd macro, we only care about the name.
490     if (isUndef) {
491       opts.predefinitions.emplace_back(
492           macroName.str(), std::optional<std::string>{});
493       continue;
494     }
495 
496     // For a #define'd macro, figure out the actual definition.
497     if (macroName.size() == macro.size())
498       macroBody = "1";
499     else {
500       // Note: GCC drops anything following an end-of-line character.
501       llvm::StringRef::size_type End = macroBody.find_first_of("\n\r");
502       macroBody = macroBody.substr(0, End);
503     }
504     opts.predefinitions.emplace_back(
505         macroName, std::optional<std::string>(macroBody.str()));
506   }
507 }
508 
509 void CompilerInvocation::SetDefaultFortranOpts() {
510   auto &fortranOptions = fortranOpts();
511 
512   // These defaults are based on the defaults in f18/f18.cpp.
513   std::vector<std::string> searchDirectories{"."s};
514   fortranOptions.searchDirectories = searchDirectories;
515   fortranOptions.isFixedForm = false;
516 }
517 
518 // TODO: When expanding this method, consider creating a dedicated API for
519 // this. Also at some point we will need to differentiate between different
520 // targets and add dedicated predefines for each.
521 void CompilerInvocation::setDefaultPredefinitions() {
522   auto &fortranOptions = fortranOpts();
523   const auto &frontendOptions = frontendOpts();
524 
525   // Populate the macro list with version numbers and other predefinitions.
526   fortranOptions.predefinitions.emplace_back("__flang__", "1");
527   fortranOptions.predefinitions.emplace_back(
528       "__flang_major__", FLANG_VERSION_MAJOR_STRING);
529   fortranOptions.predefinitions.emplace_back(
530       "__flang_minor__", FLANG_VERSION_MINOR_STRING);
531   fortranOptions.predefinitions.emplace_back(
532       "__flang_patchlevel__", FLANG_VERSION_PATCHLEVEL_STRING);
533 
534   // Add predefinitions based on extensions enabled
535   if (frontendOptions.features_.IsEnabled(
536           Fortran::common::LanguageFeature::OpenACC)) {
537     fortranOptions.predefinitions.emplace_back("_OPENACC", "202011");
538   }
539   if (frontendOptions.features_.IsEnabled(
540           Fortran::common::LanguageFeature::OpenMP)) {
541     fortranOptions.predefinitions.emplace_back("_OPENMP", "201511");
542   }
543 }
544 
545 void CompilerInvocation::setFortranOpts() {
546   auto &fortranOptions = fortranOpts();
547   const auto &frontendOptions = frontendOpts();
548   const auto &preprocessorOptions = preprocessorOpts();
549   auto &moduleDirJ = moduleDir();
550 
551   if (frontendOptions.fortranForm_ != FortranForm::Unknown) {
552     fortranOptions.isFixedForm =
553         frontendOptions.fortranForm_ == FortranForm::FixedForm;
554   }
555   fortranOptions.fixedFormColumns = frontendOptions.fixedFormColumns_;
556 
557   fortranOptions.features = frontendOptions.features_;
558   fortranOptions.encoding = frontendOptions.encoding_;
559 
560   collectMacroDefinitions(preprocessorOptions, fortranOptions);
561 
562   // Adding search directories specified by -I
563   fortranOptions.searchDirectories.insert(
564       fortranOptions.searchDirectories.end(),
565       preprocessorOptions.searchDirectoriesFromDashI.begin(),
566       preprocessorOptions.searchDirectoriesFromDashI.end());
567 
568   // Add the ordered list of -intrinsic-modules-path
569   fortranOptions.searchDirectories.insert(
570       fortranOptions.searchDirectories.end(),
571       preprocessorOptions.searchDirectoriesFromIntrModPath.begin(),
572       preprocessorOptions.searchDirectoriesFromIntrModPath.end());
573 
574   //  Add the default intrinsic module directory at the end
575   fortranOptions.searchDirectories.emplace_back(getIntrinsicDir());
576 
577   // Add the directory supplied through -J/-module-dir to the list of search
578   // directories
579   if (moduleDirJ.compare(".") != 0)
580     fortranOptions.searchDirectories.emplace_back(moduleDirJ);
581 
582   if (frontendOptions.instrumentedParse_)
583     fortranOptions.instrumentedParse = true;
584 
585   if (enableConformanceChecks()) {
586     fortranOptions.features.WarnOnAllNonstandard();
587   }
588 }
589 
590 void CompilerInvocation::setSemanticsOpts(
591     Fortran::parser::AllCookedSources &allCookedSources) {
592   const auto &fortranOptions = fortranOpts();
593 
594   semanticsContext_ = std::make_unique<semantics::SemanticsContext>(
595       defaultKinds(), fortranOptions.features, allCookedSources);
596 
597   semanticsContext_->set_moduleDirectory(moduleDir())
598       .set_searchDirectories(fortranOptions.searchDirectories)
599       .set_warnOnNonstandardUsage(enableConformanceChecks())
600       .set_warningsAreErrors(warnAsErr());
601 }
602