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cb424d7448dc5ccd1eec482f2d3845d25231c368
RedBear-OS/local/recipes/dev/libclc/source/lld/MinGW/Driver.cpp
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class) 
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

617 lines
22 KiB
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//===- MinGW/Driver.cpp ---------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// MinGW is a GNU development environment for Windows. It consists of GNU
// tools such as GCC and GNU ld. Unlike Cygwin, there's no POSIX-compatible
// layer, as it aims to be a native development toolchain.
//
// lld/MinGW is a drop-in replacement for GNU ld/MinGW.
//
// Being a native development tool, a MinGW linker is not very different from
// Microsoft link.exe, so a MinGW linker can be implemented as a thin wrapper
// for lld/COFF. This driver takes Unix-ish command line options, translates
// them to Windows-ish ones, and then passes them to lld/COFF.
//
// When this driver calls the lld/COFF driver, it passes a hidden option
// "-lldmingw" along with other user-supplied options, to run the lld/COFF
// linker in "MinGW mode".
//
// There are subtle differences between MS link.exe and GNU ld/MinGW, and GNU
// ld/MinGW implements a few GNU-specific features. Such features are directly
// implemented in lld/COFF and enabled only when the linker is running in MinGW
// mode.
//
//===----------------------------------------------------------------------===//
#include "lld/Common/Driver.h"
#include "lld/Common/CommonLinkerContext.h"
#include "lld/Common/ErrorHandler.h"
#include "lld/Common/Version.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/TargetParser/Host.h"
#include "llvm/TargetParser/Triple.h"
#include <optional>
using namespace lld;
using namespace llvm::opt;
using namespace llvm;
// Create OptTable
enum {
OPT_INVALID = 0,
#define OPTION(...) LLVM_MAKE_OPT_ID(__VA_ARGS__),
#include "Options.inc"
#undef OPTION
};
#define OPTTABLE_STR_TABLE_CODE
#include "Options.inc"
#undef OPTTABLE_STR_TABLE_CODE
#define OPTTABLE_PREFIXES_TABLE_CODE
#include "Options.inc"
#undef OPTTABLE_PREFIXES_TABLE_CODE
// Create table mapping all options defined in Options.td
static constexpr opt::OptTable::Info infoTable[] = {
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, \
VISIBILITY, PARAM, HELPTEXT, HELPTEXTSFORVARIANTS, METAVAR, \
VALUES) \
{PREFIX, \
NAME, \
HELPTEXT, \
HELPTEXTSFORVARIANTS, \
METAVAR, \
OPT_##ID, \
opt::Option::KIND##Class, \
PARAM, \
FLAGS, \
VISIBILITY, \
OPT_##GROUP, \
OPT_##ALIAS, \
ALIASARGS, \
VALUES},
#include "Options.inc"
#undef OPTION
};
namespace {
class MinGWOptTable : public opt::GenericOptTable {
public:
MinGWOptTable()
: opt::GenericOptTable(OptionStrTable, OptionPrefixesTable, infoTable,
false) {}
opt::InputArgList parse(ArrayRef<const char *> argv);
};
} // namespace
static void printHelp(CommonLinkerContext &ctx, const char *argv0) {
auto &outs = ctx.e.outs();
MinGWOptTable().printHelp(
outs, (std::string(argv0) + " [options] file...").c_str(), "lld",
/*ShowHidden=*/false, /*ShowAllAliases=*/true);
outs << '\n';
}
static cl::TokenizerCallback getQuotingStyle() {
if (Triple(sys::getProcessTriple()).getOS() == Triple::Win32)
return cl::TokenizeWindowsCommandLine;
return cl::TokenizeGNUCommandLine;
}
opt::InputArgList MinGWOptTable::parse(ArrayRef<const char *> argv) {
unsigned missingIndex;
unsigned missingCount;
SmallVector<const char *, 256> vec(argv.data(), argv.data() + argv.size());
cl::ExpandResponseFiles(saver(), getQuotingStyle(), vec);
opt::InputArgList args = this->ParseArgs(vec, missingIndex, missingCount);
if (missingCount)
error(StringRef(args.getArgString(missingIndex)) + ": missing argument");
for (auto *arg : args.filtered(OPT_UNKNOWN))
error("unknown argument: " + arg->getAsString(args));
return args;
}
// Find a file by concatenating given paths.
static std::optional<std::string> findFile(StringRef path1,
const Twine &path2) {
SmallString<128> s;
sys::path::append(s, path1, path2);
if (sys::fs::exists(s))
return std::string(s);
return std::nullopt;
}
// This is for -lfoo. We'll look for libfoo.dll.a or libfoo.a from search paths.
static std::string searchLibrary(StringRef name,
ArrayRef<StringRef> searchPaths, bool bStatic,
StringRef prefix) {
if (name.starts_with(":")) {
for (StringRef dir : searchPaths)
if (std::optional<std::string> s = findFile(dir, name.substr(1)))
return *s;
error("unable to find library -l" + name);
return "";
}
for (StringRef dir : searchPaths) {
if (!bStatic) {
if (std::optional<std::string> s = findFile(dir, "lib" + name + ".dll.a"))
return *s;
if (std::optional<std::string> s = findFile(dir, name + ".dll.a"))
return *s;
}
if (std::optional<std::string> s = findFile(dir, "lib" + name + ".a"))
return *s;
if (std::optional<std::string> s = findFile(dir, name + ".lib"))
return *s;
if (!bStatic) {
if (std::optional<std::string> s = findFile(dir, prefix + name + ".dll"))
return *s;
if (std::optional<std::string> s = findFile(dir, name + ".dll"))
return *s;
}
}
error("unable to find library -l" + name);
return "";
}
static bool isI386Target(const opt::InputArgList &args,
const Triple &defaultTarget) {
auto *a = args.getLastArg(OPT_m);
if (a)
return StringRef(a->getValue()) == "i386pe";
return defaultTarget.getArch() == Triple::x86;
}
namespace lld {
namespace coff {
bool link(ArrayRef<const char *> argsArr, llvm::raw_ostream &stdoutOS,
llvm::raw_ostream &stderrOS, bool exitEarly, bool disableOutput);
}
namespace mingw {
// Convert Unix-ish command line arguments to Windows-ish ones and
// then call coff::link.
bool link(ArrayRef<const char *> argsArr, llvm::raw_ostream &stdoutOS,
llvm::raw_ostream &stderrOS, bool exitEarly, bool disableOutput) {
auto *ctx = new CommonLinkerContext;
ctx->e.initialize(stdoutOS, stderrOS, exitEarly, disableOutput);
MinGWOptTable parser;
opt::InputArgList args = parser.parse(argsArr.slice(1));
if (errorCount())
return false;
if (args.hasArg(OPT_help)) {
printHelp(*ctx, argsArr[0]);
return true;
}
// A note about "compatible with GNU linkers" message: this is a hack for
// scripts generated by GNU Libtool 2.4.6 (released in February 2014 and
// still the newest version in March 2017) or earlier to recognize LLD as
// a GNU compatible linker. As long as an output for the -v option
// contains "GNU" or "with BFD", they recognize us as GNU-compatible.
if (args.hasArg(OPT_v) || args.hasArg(OPT_version))
message(getLLDVersion() + " (compatible with GNU linkers)");
// The behavior of -v or --version is a bit strange, but this is
// needed for compatibility with GNU linkers.
if (args.hasArg(OPT_v) && !args.hasArg(OPT_INPUT) && !args.hasArg(OPT_l))
return true;
if (args.hasArg(OPT_version))
return true;
if (!args.hasArg(OPT_INPUT) && !args.hasArg(OPT_l)) {
error("no input files");
return false;
}
Triple defaultTarget(Triple::normalize(sys::getDefaultTargetTriple()));
std::vector<std::string> linkArgs;
auto add = [&](const Twine &s) { linkArgs.push_back(s.str()); };
add("lld-link");
add("-lldmingw");
if (auto *a = args.getLastArg(OPT_entry)) {
StringRef s = a->getValue();
if (isI386Target(args, defaultTarget) && s.starts_with("_"))
add("-entry:" + s.substr(1));
else if (!s.empty())
add("-entry:" + s);
else
add("-noentry");
}
if (args.hasArg(OPT_major_os_version, OPT_minor_os_version,
OPT_major_subsystem_version, OPT_minor_subsystem_version)) {
StringRef majOSVer = args.getLastArgValue(OPT_major_os_version, "6");
StringRef minOSVer = args.getLastArgValue(OPT_minor_os_version, "0");
StringRef majSubSysVer = "6";
StringRef minSubSysVer = "0";
StringRef subSysName = "default";
StringRef subSysVer;
// Iterate over --{major,minor}-subsystem-version and --subsystem, and pick
// the version number components from the last one of them that specifies
// a version.
for (auto *a : args.filtered(OPT_major_subsystem_version,
OPT_minor_subsystem_version, OPT_subs)) {
switch (a->getOption().getID()) {
case OPT_major_subsystem_version:
majSubSysVer = a->getValue();
break;
case OPT_minor_subsystem_version:
minSubSysVer = a->getValue();
break;
case OPT_subs:
std::tie(subSysName, subSysVer) = StringRef(a->getValue()).split(':');
if (!subSysVer.empty()) {
if (subSysVer.contains('.'))
std::tie(majSubSysVer, minSubSysVer) = subSysVer.split('.');
else
majSubSysVer = subSysVer;
}
break;
}
}
add("-osversion:" + majOSVer + "." + minOSVer);
add("-subsystem:" + subSysName + "," + majSubSysVer + "." + minSubSysVer);
} else if (args.hasArg(OPT_subs)) {
StringRef subSys = args.getLastArgValue(OPT_subs, "default");
StringRef subSysName, subSysVer;
std::tie(subSysName, subSysVer) = subSys.split(':');
StringRef sep = subSysVer.empty() ? "" : ",";
add("-subsystem:" + subSysName + sep + subSysVer);
}
if (auto *a = args.getLastArg(OPT_out_implib))
add("-implib:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_stack))
add("-stack:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_output_def))
add("-output-def:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_image_base))
add("-base:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_map))
add("-lldmap:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_reproduce))
add("-reproduce:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_file_alignment))
add("-filealign:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_section_alignment))
add("-align:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_heap))
add("-heap:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_threads))
add("-threads:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_o))
add("-out:" + StringRef(a->getValue()));
else if (args.hasArg(OPT_shared))
add("-out:a.dll");
else
add("-out:a.exe");
if (auto *a = args.getLastArg(OPT_pdb)) {
add("-debug");
StringRef v = a->getValue();
if (!v.empty())
add("-pdb:" + v);
if (args.hasArg(OPT_strip_all)) {
add("-debug:nodwarf,nosymtab");
} else if (args.hasArg(OPT_strip_debug)) {
add("-debug:nodwarf,symtab");
}
} else if (args.hasArg(OPT_strip_debug)) {
add("-debug:symtab");
} else if (!args.hasArg(OPT_strip_all)) {
add("-debug:dwarf");
}
if (auto *a = args.getLastArg(OPT_build_id)) {
StringRef v = a->getValue();
if (v == "none")
add("-build-id:no");
else {
if (!v.empty())
warn("unsupported build id hashing: " + v + ", using default hashing.");
add("-build-id");
}
} else {
if (args.hasArg(OPT_strip_debug) || args.hasArg(OPT_strip_all))
add("-build-id:no");
else
add("-build-id");
}
if (auto *a = args.getLastArg(OPT_functionpadmin)) {
StringRef v = a->getValue();
if (v.empty())
add("-functionpadmin");
else
add("-functionpadmin:" + v);
}
if (args.hasFlag(OPT_fatal_warnings, OPT_no_fatal_warnings, false))
add("-WX");
else
add("-WX:no");
if (args.hasFlag(OPT_enable_stdcall_fixup, OPT_disable_stdcall_fixup, false))
add("-stdcall-fixup");
else if (args.hasArg(OPT_disable_stdcall_fixup))
add("-stdcall-fixup:no");
if (args.hasArg(OPT_shared))
add("-dll");
if (args.hasArg(OPT_verbose))
add("-verbose");
if (args.hasArg(OPT_exclude_all_symbols))
add("-exclude-all-symbols");
if (args.hasArg(OPT_export_all_symbols))
add("-export-all-symbols");
if (args.hasArg(OPT_large_address_aware))
add("-largeaddressaware");
if (args.hasArg(OPT_kill_at))
add("-kill-at");
if (args.hasArg(OPT_appcontainer))
add("-appcontainer");
if (args.hasFlag(OPT_no_seh, OPT_disable_no_seh, false))
add("-noseh");
if (args.getLastArgValue(OPT_m) != "thumb2pe" &&
args.getLastArgValue(OPT_m) != "arm64pe" &&
args.getLastArgValue(OPT_m) != "arm64ecpe" &&
args.hasFlag(OPT_disable_dynamicbase, OPT_dynamicbase, false))
add("-dynamicbase:no");
if (args.hasFlag(OPT_disable_high_entropy_va, OPT_high_entropy_va, false))
add("-highentropyva:no");
if (args.hasFlag(OPT_disable_nxcompat, OPT_nxcompat, false))
add("-nxcompat:no");
if (args.hasFlag(OPT_disable_tsaware, OPT_tsaware, false))
add("-tsaware:no");
if (args.hasFlag(OPT_disable_reloc_section, OPT_enable_reloc_section, false))
add("-fixed");
if (args.hasFlag(OPT_no_insert_timestamp, OPT_insert_timestamp, false))
add("-timestamp:0");
if (args.hasFlag(OPT_gc_sections, OPT_no_gc_sections, false))
add("-opt:ref");
else
add("-opt:noref");
if (args.hasFlag(OPT_demangle, OPT_no_demangle, true))
add("-demangle");
else
add("-demangle:no");
if (args.hasFlag(OPT_enable_auto_import, OPT_disable_auto_import, true))
add("-auto-import");
else
add("-auto-import:no");
if (args.hasFlag(OPT_enable_runtime_pseudo_reloc,
OPT_disable_runtime_pseudo_reloc, true))
add("-runtime-pseudo-reloc");
else
add("-runtime-pseudo-reloc:no");
if (args.hasFlag(OPT_allow_multiple_definition,
OPT_no_allow_multiple_definition, false))
add("-force:multiple");
if (auto *a = args.getLastArg(OPT_dependent_load_flag))
add("-dependentloadflag:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_icf)) {
StringRef s = a->getValue();
if (s == "all")
add("-opt:icf");
else if (s == "safe")
add("-opt:safeicf");
else if (s == "none")
add("-opt:noicf");
else
error("unknown parameter: --icf=" + s);
} else {
add("-opt:noicf");
}
if (auto *a = args.getLastArg(OPT_m)) {
StringRef s = a->getValue();
if (s == "i386pe")
add("-machine:x86");
else if (s == "i386pep")
add("-machine:x64");
else if (s == "thumb2pe")
add("-machine:arm");
else if (s == "arm64pe")
add("-machine:arm64");
else if (s == "arm64ecpe")
add("-machine:arm64ec");
else if (s == "arm64xpe")
add("-machine:arm64x");
else
error("unknown parameter: -m" + s);
}
if (args.hasFlag(OPT_guard_cf, OPT_no_guard_cf, false)) {
if (args.hasFlag(OPT_guard_longjmp, OPT_no_guard_longjmp, true))
add("-guard:cf,longjmp");
else
add("-guard:cf,nolongjmp");
} else if (args.hasFlag(OPT_guard_longjmp, OPT_no_guard_longjmp, false)) {
auto *a = args.getLastArg(OPT_guard_longjmp);
warn("parameter " + a->getSpelling() +
" only takes effect when used with --guard-cf");
}
if (auto *a = args.getLastArg(OPT_error_limit)) {
int n;
StringRef s = a->getValue();
if (s.getAsInteger(10, n))
error(a->getSpelling() + ": number expected, but got " + s);
else
add("-errorlimit:" + s);
}
if (auto *a = args.getLastArg(OPT_rpath))
warn("parameter " + a->getSpelling() + " has no effect on PE/COFF targets");
for (auto *a : args.filtered(OPT_mllvm))
add("-mllvm:" + StringRef(a->getValue()));
if (auto *arg = args.getLastArg(OPT_plugin_opt_mcpu_eq))
add("-mllvm:-mcpu=" + StringRef(arg->getValue()));
if (auto *arg = args.getLastArg(OPT_lto_O))
add("-opt:lldlto=" + StringRef(arg->getValue()));
if (auto *arg = args.getLastArg(OPT_lto_CGO))
add("-opt:lldltocgo=" + StringRef(arg->getValue()));
if (auto *arg = args.getLastArg(OPT_plugin_opt_dwo_dir_eq))
add("-dwodir:" + StringRef(arg->getValue()));
if (args.hasArg(OPT_lto_cs_profile_generate))
add("-lto-cs-profile-generate");
if (auto *arg = args.getLastArg(OPT_lto_cs_profile_file))
add("-lto-cs-profile-file:" + StringRef(arg->getValue()));
if (args.hasArg(OPT_plugin_opt_emit_llvm))
add("-lldemit:llvm");
if (args.hasArg(OPT_lto_emit_asm))
add("-lldemit:asm");
if (auto *arg = args.getLastArg(OPT_lto_sample_profile))
add("-lto-sample-profile:" + StringRef(arg->getValue()));
if (auto *a = args.getLastArg(OPT_thinlto_cache_dir))
add("-lldltocache:" + StringRef(a->getValue()));
if (auto *a = args.getLastArg(OPT_thinlto_cache_policy))
add("-lldltocachepolicy:" + StringRef(a->getValue()));
if (args.hasArg(OPT_thinlto_emit_imports_files))
add("-thinlto-emit-imports-files");
if (args.hasArg(OPT_thinlto_index_only))
add("-thinlto-index-only");
if (auto *arg = args.getLastArg(OPT_thinlto_index_only_eq))
add("-thinlto-index-only:" + StringRef(arg->getValue()));
if (auto *arg = args.getLastArg(OPT_thinlto_jobs_eq))
add("-opt:lldltojobs=" + StringRef(arg->getValue()));
if (auto *arg = args.getLastArg(OPT_thinlto_object_suffix_replace_eq))
add("-thinlto-object-suffix-replace:" + StringRef(arg->getValue()));
if (auto *arg = args.getLastArg(OPT_thinlto_prefix_replace_eq))
add("-thinlto-prefix-replace:" + StringRef(arg->getValue()));
for (auto *a : args.filtered(OPT_plugin_opt_eq_minus))
add("-mllvm:-" + StringRef(a->getValue()));
// GCC collect2 passes -plugin-opt=path/to/lto-wrapper with an absolute or
// relative path. Just ignore. If not ended with "lto-wrapper" (or
// "lto-wrapper.exe" for GCC cross-compiled for Windows), consider it an
// unsupported LLVMgold.so option and error.
for (opt::Arg *arg : args.filtered(OPT_plugin_opt_eq)) {
StringRef v(arg->getValue());
if (!v.ends_with("lto-wrapper") && !v.ends_with("lto-wrapper.exe"))
error(arg->getSpelling() + ": unknown plugin option '" + arg->getValue() +
"'");
}
for (auto *a : args.filtered(OPT_Xlink))
add(a->getValue());
if (isI386Target(args, defaultTarget))
add("-alternatename:__image_base__=___ImageBase");
else
add("-alternatename:__image_base__=__ImageBase");
for (auto *a : args.filtered(OPT_require_defined))
add("-include:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_undefined_glob))
add("-includeglob:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_undefined))
add("-includeoptional:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_delayload))
add("-delayload:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_wrap))
add("-wrap:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_exclude_symbols))
add("-exclude-symbols:" + StringRef(a->getValue()));
std::vector<StringRef> searchPaths;
for (auto *a : args.filtered(OPT_L)) {
searchPaths.push_back(a->getValue());
add("-libpath:" + StringRef(a->getValue()));
}
StringRef dllPrefix = "lib";
if (auto *arg = args.getLastArg(OPT_dll_search_prefix))
dllPrefix = arg->getValue();
StringRef prefix = "";
bool isStatic = false;
for (auto *a : args) {
switch (a->getOption().getID()) {
case OPT_INPUT:
if (StringRef(a->getValue()).ends_with_insensitive(".def"))
add("-def:" + StringRef(a->getValue()));
else
add(prefix + StringRef(a->getValue()));
break;
case OPT_l:
add(prefix +
searchLibrary(a->getValue(), searchPaths, isStatic, dllPrefix));
break;
case OPT_whole_archive:
prefix = "-wholearchive:";
break;
case OPT_no_whole_archive:
prefix = "";
break;
case OPT_Bstatic:
isStatic = true;
break;
case OPT_Bdynamic:
isStatic = false;
break;
}
}
if (errorCount())
return false;
if (args.hasArg(OPT_verbose) || args.hasArg(OPT__HASH_HASH_HASH))
ctx->e.errs() << llvm::join(linkArgs, " ") << "\n";
if (args.hasArg(OPT__HASH_HASH_HASH))
return true;
// Repack vector of strings to vector of const char pointers for coff::link.
std::vector<const char *> vec;
for (const std::string &s : linkArgs)
vec.push_back(s.c_str());
// Pass the actual binary name, to make error messages be printed with
// the right prefix.
vec[0] = argsArr[0];
// The context will be re-created in the COFF driver.
lld::CommonLinkerContext::destroy();
return coff::link(vec, stdoutOS, stderrOS, exitEarly, disableOutput);
}
} // namespace mingw
} // namespace lld
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