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
|
//===-- llvm-config.cpp - LLVM project configuration utility --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This tool encapsulates information about an LLVM project configuration for
// use by other project's build environments (to determine installed path,
// available features, required libraries, etc.).
//
// Note that although this tool *may* be used by some parts of LLVM's build
// itself (i.e., the Makefiles use it to compute required libraries when linking
// tools), this tool is primarily designed to support external projects.
//
//===----------------------------------------------------------------------===//
#include "llvm/Config/llvm-config.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Config/config.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Triple.h"
#include <cstdlib>
#include <set>
#include <unordered_set>
#include <vector>
using namespace llvm;
// Include the build time variables we can report to the user. This is generated
// at build time from the BuildVariables.inc.in file by the build system.
#include "BuildVariables.inc"
// Include the component table. This creates an array of struct
// AvailableComponent entries, which record the component name, library name,
// and required components for all of the available libraries.
//
// Not all components define a library, we also use "library groups" as a way to
// create entries for pseudo groups like x86 or all-targets.
#include "LibraryDependencies.inc"
// Built-in extensions also register their dependencies, but in a separate file,
// later in the process.
#include "ExtensionDependencies.inc"
// LinkMode determines what libraries and flags are returned by llvm-config.
enum LinkMode {
// LinkModeAuto will link with the default link mode for the installation,
// which is dependent on the value of LLVM_LINK_LLVM_DYLIB, and fall back
// to the alternative if the required libraries are not available.
LinkModeAuto = 0,
// LinkModeShared will link with the dynamic component libraries if they
// exist, and return an error otherwise.
LinkModeShared = 1,
// LinkModeStatic will link with the static component libraries if they
// exist, and return an error otherwise.
LinkModeStatic = 2,
};
/// Traverse a single component adding to the topological ordering in
/// \arg RequiredLibs.
///
/// \param Name - The component to traverse.
/// \param ComponentMap - A prebuilt map of component names to descriptors.
/// \param VisitedComponents [in] [out] - The set of already visited components.
/// \param RequiredLibs [out] - The ordered list of required
/// libraries.
/// \param GetComponentNames - Get the component names instead of the
/// library name.
static void VisitComponent(const std::string &Name,
const StringMap<AvailableComponent *> &ComponentMap,
std::set<AvailableComponent *> &VisitedComponents,
std::vector<std::string> &RequiredLibs,
bool IncludeNonInstalled, bool GetComponentNames,
const std::function<std::string(const StringRef &)>
*GetComponentLibraryPath,
std::vector<std::string> *Missing,
const std::string &DirSep) {
// Lookup the component.
AvailableComponent *AC = ComponentMap.lookup(Name);
if (!AC) {
errs() << "Can't find component: '" << Name << "' in the map. Available components are: ";
for (const auto &Component : ComponentMap) {
errs() << "'" << Component.first() << "' ";
}
errs() << "\n";
report_fatal_error("abort");
}
assert(AC && "Invalid component name!");
// Add to the visited table.
if (!VisitedComponents.insert(AC).second) {
// We are done if the component has already been visited.
return;
}
// Only include non-installed components if requested.
if (!AC->IsInstalled && !IncludeNonInstalled)
return;
// Otherwise, visit all the dependencies.
for (unsigned i = 0; AC->RequiredLibraries[i]; ++i) {
VisitComponent(AC->RequiredLibraries[i], ComponentMap, VisitedComponents,
RequiredLibs, IncludeNonInstalled, GetComponentNames,
GetComponentLibraryPath, Missing, DirSep);
}
// Special handling for the special 'extensions' component. Its content is
// not populated by llvm-build, but later in the process and loaded from
// ExtensionDependencies.inc.
if (Name == "extensions") {
for (auto const &AvailableExtension : AvailableExtensions) {
for (const char *const *Iter = &AvailableExtension.RequiredLibraries[0];
*Iter; ++Iter) {
AvailableComponent *AC = ComponentMap.lookup(*Iter);
if (!AC) {
RequiredLibs.push_back(*Iter);
} else {
VisitComponent(*Iter, ComponentMap, VisitedComponents, RequiredLibs,
IncludeNonInstalled, GetComponentNames,
GetComponentLibraryPath, Missing, DirSep);
}
}
}
}
if (GetComponentNames) {
RequiredLibs.push_back(Name);
return;
}
// Add to the required library list.
if (AC->Library) {
if (Missing && GetComponentLibraryPath) {
std::string path = (*GetComponentLibraryPath)(AC->Library);
if (DirSep == "\\") {
std::replace(path.begin(), path.end(), '/', '\\');
}
if (!sys::fs::exists(path))
Missing->push_back(path);
}
RequiredLibs.push_back(AC->Library);
}
}
/// Compute the list of required libraries for a given list of
/// components, in an order suitable for passing to a linker (that is, libraries
/// appear prior to their dependencies).
///
/// \param Components - The names of the components to find libraries for.
/// \param IncludeNonInstalled - Whether non-installed components should be
/// reported.
/// \param GetComponentNames - True if one would prefer the component names.
static std::vector<std::string> ComputeLibsForComponents(
const std::vector<StringRef> &Components, bool IncludeNonInstalled,
bool GetComponentNames, const std::function<std::string(const StringRef &)>
*GetComponentLibraryPath,
std::vector<std::string> *Missing, const std::string &DirSep) {
std::vector<std::string> RequiredLibs;
std::set<AvailableComponent *> VisitedComponents;
// Build a map of component names to information.
StringMap<AvailableComponent *> ComponentMap;
for (auto &AC : AvailableComponents)
ComponentMap[AC.Name] = &AC;
// Visit the components.
for (unsigned i = 0, e = Components.size(); i != e; ++i) {
// Users are allowed to provide mixed case component names.
std::string ComponentLower = Components[i].lower();
// Validate that the user supplied a valid component name.
if (!ComponentMap.count(ComponentLower)) {
llvm::errs() << "llvm-config: unknown component name: " << Components[i]
<< "\n";
exit(1);
}
VisitComponent(ComponentLower, ComponentMap, VisitedComponents,
RequiredLibs, IncludeNonInstalled, GetComponentNames,
GetComponentLibraryPath, Missing, DirSep);
}
// The list is now ordered with leafs first, we want the libraries to printed
// in the reverse order of dependency.
std::reverse(RequiredLibs.begin(), RequiredLibs.end());
return RequiredLibs;
}
/* *** */
static void usage(bool ExitWithFailure = true) {
errs() << "\
usage: llvm-config <OPTION>... [<COMPONENT>...]\n\
\n\
Get various configuration information needed to compile programs which use\n\
LLVM. Typically called from 'configure' scripts. Examples:\n\
llvm-config --cxxflags\n\
llvm-config --ldflags\n\
llvm-config --libs engine bcreader scalaropts\n\
\n\
Options:\n\
--assertion-mode Print assertion mode of LLVM tree (ON or OFF).\n\
--bindir Directory containing LLVM executables.\n\
--build-mode Print build mode of LLVM tree (e.g. Debug or Release).\n\
--build-system Print the build system used to build LLVM (e.g. `cmake` or `gn`).\n\
--cflags C compiler flags for files that include LLVM headers.\n\
--cmakedir Directory containing LLVM CMake modules.\n\
--components List of all possible components.\n\
--cppflags C preprocessor flags for files that include LLVM headers.\n\
--cxxflags C++ compiler flags for files that include LLVM headers.\n\
--has-rtti Print whether or not LLVM was built with rtti (YES or NO).\n\
--help Print a summary of llvm-config arguments.\n\
--host-target Target triple used to configure LLVM.\n\
--ignore-libllvm Ignore libLLVM and link component libraries instead.\n\
--includedir Directory containing LLVM headers.\n\
--ldflags Print Linker flags.\n\
--libdir Directory containing LLVM libraries.\n\
--libfiles Fully qualified library filenames for makefile depends.\n\
--libnames Bare library names for in-tree builds.\n\
--libs Libraries needed to link against LLVM components.\n\
--link-shared Link the components as shared libraries.\n\
--link-static Link the component libraries statically.\n\
--obj-root Print the object root used to build LLVM.\n\
--prefix Print the installation prefix.\n\
--shared-mode Print how the provided components can be collectively linked (`shared` or `static`).\n\
--system-libs System Libraries needed to link against LLVM components.\n\
--targets-built List of all targets currently built.\n\
--version Print LLVM version.\n\
Typical components:\n\
all All LLVM libraries (default).\n\
engine Either a native JIT or a bitcode interpreter.\n";
if (ExitWithFailure)
exit(1);
}
/// Compute the path to the main executable.
std::string GetExecutablePath(const char *Argv0) {
// This just needs to be some symbol in the binary; C++ doesn't
// allow taking the address of ::main however.
void *P = (void *)(intptr_t)GetExecutablePath;
return llvm::sys::fs::getMainExecutable(Argv0, P);
}
/// Expand the semi-colon delimited LLVM_DYLIB_COMPONENTS into
/// the full list of components.
std::vector<std::string> GetAllDyLibComponents(const bool IsInDevelopmentTree,
const bool GetComponentNames,
const std::string &DirSep) {
std::vector<StringRef> DyLibComponents;
StringRef DyLibComponentsStr(LLVM_DYLIB_COMPONENTS);
size_t Offset = 0;
while (true) {
const size_t NextOffset = DyLibComponentsStr.find(';', Offset);
DyLibComponents.push_back(DyLibComponentsStr.substr(Offset, NextOffset-Offset));
if (NextOffset == std::string::npos) {
break;
}
Offset = NextOffset + 1;
}
assert(!DyLibComponents.empty());
return ComputeLibsForComponents(DyLibComponents,
/*IncludeNonInstalled=*/IsInDevelopmentTree,
GetComponentNames, nullptr, nullptr, DirSep);
}
int main(int argc, char **argv) {
std::vector<StringRef> Components;
bool PrintLibs = false, PrintLibNames = false, PrintLibFiles = false;
bool PrintSystemLibs = false, PrintSharedMode = false;
bool HasAnyOption = false;
// llvm-config is designed to support being run both from a development tree
// and from an installed path. We try and auto-detect which case we are in so
// that we can report the correct information when run from a development
// tree.
bool IsInDevelopmentTree;
enum { CMakeStyle, CMakeBuildModeStyle } DevelopmentTreeLayout;
llvm::SmallString<256> CurrentPath(GetExecutablePath(argv[0]));
std::string CurrentExecPrefix;
std::string ActiveObjRoot;
// If CMAKE_CFG_INTDIR is given, honor it as build mode.
char const *build_mode = LLVM_BUILDMODE;
#if defined(CMAKE_CFG_INTDIR)
if (!(CMAKE_CFG_INTDIR[0] == '.' && CMAKE_CFG_INTDIR[1] == '\0'))
build_mode = CMAKE_CFG_INTDIR;
#endif
// Create an absolute path, and pop up one directory (we expect to be inside a
// bin dir).
sys::fs::make_absolute(CurrentPath);
CurrentExecPrefix =
sys::path::parent_path(sys::path::parent_path(CurrentPath)).str();
// Check to see if we are inside a development tree by comparing to possible
// locations (prefix style or CMake style).
if (sys::fs::equivalent(CurrentExecPrefix, LLVM_OBJ_ROOT)) {
IsInDevelopmentTree = true;
DevelopmentTreeLayout = CMakeStyle;
ActiveObjRoot = LLVM_OBJ_ROOT;
} else if (sys::fs::equivalent(sys::path::parent_path(CurrentExecPrefix),
LLVM_OBJ_ROOT)) {
IsInDevelopmentTree = true;
DevelopmentTreeLayout = CMakeBuildModeStyle;
ActiveObjRoot = LLVM_OBJ_ROOT;
} else {
IsInDevelopmentTree = false;
DevelopmentTreeLayout = CMakeStyle; // Initialized to avoid warnings.
}
// Compute various directory locations based on the derived location
// information.
std::string ActivePrefix, ActiveBinDir, ActiveIncludeDir, ActiveLibDir,
ActiveCMakeDir;
std::string ActiveIncludeOption;
if (IsInDevelopmentTree) {
ActiveIncludeDir = std::string(LLVM_SRC_ROOT) + "/include";
ActivePrefix = CurrentExecPrefix;
// CMake organizes the products differently than a normal prefix style
// layout.
switch (DevelopmentTreeLayout) {
case CMakeStyle:
ActiveBinDir = ActiveObjRoot + "/bin";
ActiveLibDir = ActiveObjRoot + "/lib" + LLVM_LIBDIR_SUFFIX;
ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
break;
case CMakeBuildModeStyle:
// FIXME: Should we consider the build-mode-specific path as the prefix?
ActivePrefix = ActiveObjRoot;
ActiveBinDir = ActiveObjRoot + "/" + build_mode + "/bin";
ActiveLibDir =
ActiveObjRoot + "/" + build_mode + "/lib" + LLVM_LIBDIR_SUFFIX;
// The CMake directory isn't separated by build mode.
ActiveCMakeDir =
ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX + "/cmake/llvm";
break;
}
// We need to include files from both the source and object trees.
ActiveIncludeOption =
("-I" + ActiveIncludeDir + " " + "-I" + ActiveObjRoot + "/include");
} else {
ActivePrefix = CurrentExecPrefix;
{
SmallString<256> Path(LLVM_INSTALL_INCLUDEDIR);
sys::fs::make_absolute(ActivePrefix, Path);
ActiveIncludeDir = std::string(Path);
}
{
SmallString<256> Path(LLVM_TOOLS_INSTALL_DIR);
sys::fs::make_absolute(ActivePrefix, Path);
ActiveBinDir = std::string(Path);
}
ActiveLibDir = ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX;
{
SmallString<256> Path(LLVM_INSTALL_PACKAGE_DIR);
sys::fs::make_absolute(ActivePrefix, Path);
ActiveCMakeDir = std::string(Path);
}
ActiveIncludeOption = "-I" + ActiveIncludeDir;
}
/// We only use `shared library` mode in cases where the static library form
/// of the components provided are not available; note however that this is
/// skipped if we're run from within the build dir. However, once installed,
/// we still need to provide correct output when the static archives are
/// removed or, as in the case of CMake's `BUILD_SHARED_LIBS`, never present
/// in the first place. This can't be done at configure/build time.
StringRef SharedExt, SharedVersionedExt, SharedDir, SharedPrefix, StaticExt,
StaticPrefix, StaticDir = "lib";
std::string DirSep = "/";
const Triple HostTriple(Triple::normalize(LLVM_HOST_TRIPLE));
if (HostTriple.isOSWindows()) {
SharedExt = "dll";
SharedVersionedExt = LLVM_DYLIB_VERSION ".dll";
if (HostTriple.isOSCygMing()) {
SharedPrefix = "lib";
StaticExt = "a";
StaticPrefix = "lib";
} else {
StaticExt = "lib";
DirSep = "\\";
std::replace(ActiveObjRoot.begin(), ActiveObjRoot.end(), '/', '\\');
std::replace(ActivePrefix.begin(), ActivePrefix.end(), '/', '\\');
std::replace(ActiveBinDir.begin(), ActiveBinDir.end(), '/', '\\');
std::replace(ActiveLibDir.begin(), ActiveLibDir.end(), '/', '\\');
std::replace(ActiveCMakeDir.begin(), ActiveCMakeDir.end(), '/', '\\');
std::replace(ActiveIncludeOption.begin(), ActiveIncludeOption.end(), '/',
'\\');
}
SharedDir = ActiveBinDir;
StaticDir = ActiveLibDir;
} else if (HostTriple.isOSDarwin()) {
SharedExt = "dylib";
SharedVersionedExt = LLVM_DYLIB_VERSION ".dylib";
StaticExt = "a";
StaticDir = SharedDir = ActiveLibDir;
StaticPrefix = SharedPrefix = "lib";
} else {
// default to the unix values:
SharedExt = "so";
SharedVersionedExt = LLVM_DYLIB_VERSION ".so";
StaticExt = "a";
StaticDir = SharedDir = ActiveLibDir;
StaticPrefix = SharedPrefix = "lib";
}
const bool BuiltDyLib = !!LLVM_ENABLE_DYLIB;
/// CMake style shared libs, ie each component is in a shared library.
const bool BuiltSharedLibs = !!LLVM_ENABLE_SHARED;
bool DyLibExists = false;
const std::string DyLibName =
(SharedPrefix + "LLVM-" + SharedVersionedExt).str();
// If LLVM_LINK_DYLIB is ON, the single shared library will be returned
// for "--libs", etc, if they exist. This behaviour can be overridden with
// --link-static or --link-shared.
bool LinkDyLib = !!LLVM_LINK_DYLIB;
if (BuiltDyLib) {
std::string path((SharedDir + DirSep + DyLibName).str());
if (DirSep == "\\") {
std::replace(path.begin(), path.end(), '/', '\\');
}
DyLibExists = sys::fs::exists(path);
if (!DyLibExists) {
// The shared library does not exist: don't error unless the user
// explicitly passes --link-shared.
LinkDyLib = false;
}
}
LinkMode LinkMode =
(LinkDyLib || BuiltSharedLibs) ? LinkModeShared : LinkModeAuto;
/// Get the component's library name without the lib prefix and the
/// extension. Returns true if Lib is in a recognized format.
auto GetComponentLibraryNameSlice = [&](const StringRef &Lib,
StringRef &Out) {
if (Lib.starts_with("lib")) {
unsigned FromEnd;
if (Lib.ends_with(StaticExt)) {
FromEnd = StaticExt.size() + 1;
} else if (Lib.ends_with(SharedExt)) {
FromEnd = SharedExt.size() + 1;
} else {
FromEnd = 0;
}
if (FromEnd != 0) {
Out = Lib.slice(3, Lib.size() - FromEnd);
return true;
}
}
return false;
};
/// Maps Unixizms to the host platform.
auto GetComponentLibraryFileName = [&](const StringRef &Lib,
const bool Shared) {
std::string LibFileName;
if (Shared) {
if (Lib == DyLibName) {
// Treat the DyLibName specially. It is not a component library and
// already has the necessary prefix and suffix (e.g. `.so`) added so
// just return it unmodified.
assert(Lib.ends_with(SharedExt) && "DyLib is missing suffix");
LibFileName = std::string(Lib);
} else {
LibFileName = (SharedPrefix + Lib + "." + SharedExt).str();
}
} else {
// default to static
LibFileName = (StaticPrefix + Lib + "." + StaticExt).str();
}
return LibFileName;
};
/// Get the full path for a possibly shared component library.
auto GetComponentLibraryPath = [&](const StringRef &Name, const bool Shared) {
auto LibFileName = GetComponentLibraryFileName(Name, Shared);
if (Shared) {
return (SharedDir + DirSep + LibFileName).str();
} else {
return (StaticDir + DirSep + LibFileName).str();
}
};
raw_ostream &OS = outs();
for (int i = 1; i != argc; ++i) {
StringRef Arg = argv[i];
if (Arg.starts_with("-")) {
HasAnyOption = true;
if (Arg == "--version") {
OS << PACKAGE_VERSION << '\n';
} else if (Arg == "--prefix") {
OS << ActivePrefix << '\n';
} else if (Arg == "--bindir") {
OS << ActiveBinDir << '\n';
} else if (Arg == "--includedir") {
OS << ActiveIncludeDir << '\n';
} else if (Arg == "--libdir") {
OS << ActiveLibDir << '\n';
} else if (Arg == "--cmakedir") {
OS << ActiveCMakeDir << '\n';
} else if (Arg == "--cppflags") {
OS << ActiveIncludeOption << ' ' << LLVM_CPPFLAGS << '\n';
} else if (Arg == "--cflags") {
OS << ActiveIncludeOption << ' ' << LLVM_CFLAGS << '\n';
} else if (Arg == "--cxxflags") {
OS << ActiveIncludeOption << ' ' << LLVM_CXXFLAGS << '\n';
} else if (Arg == "--ldflags") {
OS << ((HostTriple.isWindowsMSVCEnvironment()) ? "-LIBPATH:" : "-L")
<< ActiveLibDir << ' ' << LLVM_LDFLAGS << '\n';
} else if (Arg == "--system-libs") {
PrintSystemLibs = true;
} else if (Arg == "--libs") {
PrintLibs = true;
} else if (Arg == "--libnames") {
PrintLibNames = true;
} else if (Arg == "--libfiles") {
PrintLibFiles = true;
} else if (Arg == "--components") {
/// If there are missing static archives and a dylib was
/// built, print LLVM_DYLIB_COMPONENTS instead of everything
/// in the manifest.
std::vector<std::string> Components;
for (const auto &AC : AvailableComponents) {
// Only include non-installed components when in a development tree.
if (!AC.IsInstalled && !IsInDevelopmentTree)
continue;
Components.push_back(AC.Name);
if (AC.Library && !IsInDevelopmentTree) {
std::string path(GetComponentLibraryPath(AC.Library, false));
if (DirSep == "\\") {
std::replace(path.begin(), path.end(), '/', '\\');
}
if (DyLibExists && !sys::fs::exists(path)) {
Components =
GetAllDyLibComponents(IsInDevelopmentTree, true, DirSep);
llvm::sort(Components);
break;
}
}
}
for (unsigned I = 0; I < Components.size(); ++I) {
if (I) {
OS << ' ';
}
OS << Components[I];
}
OS << '\n';
} else if (Arg == "--targets-built") {
OS << LLVM_TARGETS_BUILT << '\n';
} else if (Arg == "--host-target") {
OS << Triple::normalize(LLVM_DEFAULT_TARGET_TRIPLE) << '\n';
} else if (Arg == "--build-mode") {
OS << build_mode << '\n';
} else if (Arg == "--assertion-mode") {
#if defined(NDEBUG)
OS << "OFF\n";
#else
OS << "ON\n";
#endif
} else if (Arg == "--build-system") {
OS << LLVM_BUILD_SYSTEM << '\n';
} else if (Arg == "--has-rtti") {
OS << (LLVM_HAS_RTTI ? "YES" : "NO") << '\n';
} else if (Arg == "--shared-mode") {
PrintSharedMode = true;
} else if (Arg == "--obj-root") {
OS << ActivePrefix << '\n';
} else if (Arg == "--ignore-libllvm") {
LinkDyLib = false;
LinkMode = BuiltSharedLibs ? LinkModeShared : LinkModeAuto;
} else if (Arg == "--link-shared") {
LinkMode = LinkModeShared;
} else if (Arg == "--link-static") {
LinkMode = LinkModeStatic;
} else if (Arg == "--help") {
usage(false);
} else {
usage();
}
} else {
Components.push_back(Arg);
}
}
if (!HasAnyOption)
usage();
if (LinkMode == LinkModeShared && !DyLibExists && !BuiltSharedLibs) {
WithColor::error(errs(), "llvm-config") << DyLibName << " is missing\n";
return 1;
}
if (PrintLibs || PrintLibNames || PrintLibFiles || PrintSystemLibs ||
PrintSharedMode) {
if (PrintSharedMode && BuiltSharedLibs) {
OS << "shared\n";
return 0;
}
// If no components were specified, default to "all".
if (Components.empty())
Components.push_back("all");
// Construct the list of all the required libraries.
std::function<std::string(const StringRef &)>
GetComponentLibraryPathFunction = [&](const StringRef &Name) {
return GetComponentLibraryPath(Name, LinkMode == LinkModeShared);
};
std::vector<std::string> MissingLibs;
std::vector<std::string> RequiredLibs = ComputeLibsForComponents(
Components,
/*IncludeNonInstalled=*/IsInDevelopmentTree, false,
&GetComponentLibraryPathFunction, &MissingLibs, DirSep);
if (!MissingLibs.empty()) {
switch (LinkMode) {
case LinkModeShared:
if (LinkDyLib && !BuiltSharedLibs)
break;
// Using component shared libraries.
for (auto &Lib : MissingLibs)
WithColor::error(errs(), "llvm-config") << "missing: " << Lib << "\n";
return 1;
case LinkModeAuto:
if (DyLibExists) {
LinkMode = LinkModeShared;
break;
}
WithColor::error(errs(), "llvm-config")
<< "component libraries and shared library\n\n";
[[fallthrough]];
case LinkModeStatic:
for (auto &Lib : MissingLibs)
WithColor::error(errs(), "llvm-config") << "missing: " << Lib << "\n";
return 1;
}
} else if (LinkMode == LinkModeAuto) {
LinkMode = LinkModeStatic;
}
if (PrintSharedMode) {
std::unordered_set<std::string> FullDyLibComponents;
std::vector<std::string> DyLibComponents =
GetAllDyLibComponents(IsInDevelopmentTree, false, DirSep);
for (auto &Component : DyLibComponents) {
FullDyLibComponents.insert(Component);
}
DyLibComponents.clear();
for (auto &Lib : RequiredLibs) {
if (!FullDyLibComponents.count(Lib)) {
OS << "static\n";
return 0;
}
}
FullDyLibComponents.clear();
if (LinkMode == LinkModeShared) {
OS << "shared\n";
return 0;
} else {
OS << "static\n";
return 0;
}
}
if (PrintLibs || PrintLibNames || PrintLibFiles) {
auto PrintForLib = [&](const StringRef &Lib) {
const bool Shared = LinkMode == LinkModeShared;
if (PrintLibNames) {
OS << GetComponentLibraryFileName(Lib, Shared);
} else if (PrintLibFiles) {
OS << GetComponentLibraryPath(Lib, Shared);
} else if (PrintLibs) {
// On Windows, output full path to library without parameters.
// Elsewhere, if this is a typical library name, include it using -l.
if (HostTriple.isWindowsMSVCEnvironment()) {
OS << GetComponentLibraryPath(Lib, Shared);
} else {
StringRef LibName;
if (GetComponentLibraryNameSlice(Lib, LibName)) {
// Extract library name (remove prefix and suffix).
OS << "-l" << LibName;
} else {
// Lib is already a library name without prefix and suffix.
OS << "-l" << Lib;
}
}
}
};
if (LinkMode == LinkModeShared && LinkDyLib) {
PrintForLib(DyLibName);
} else {
for (unsigned i = 0, e = RequiredLibs.size(); i != e; ++i) {
auto Lib = RequiredLibs[i];
if (i)
OS << ' ';
PrintForLib(Lib);
}
}
OS << '\n';
}
// Print SYSTEM_LIBS after --libs.
// FIXME: Each LLVM component may have its dependent system libs.
if (PrintSystemLibs) {
// Output system libraries only if linking against a static
// library (since the shared library links to all system libs
// already)
OS << (LinkMode == LinkModeStatic ? LLVM_SYSTEM_LIBS : "") << '\n';
}
} else if (!Components.empty()) {
WithColor::error(errs(), "llvm-config")
<< "components given, but unused\n\n";
usage();
}
return 0;
}
|