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1dd2b3d1d0
We want --reproduce to * not rewrite scripts and thin archives * work with absolute paths Given that, it pretty much has to create a full directory tree. On windows that is problematic because of the very short maximum path limit. On most cases users can still work around it with "--repro c:\r", but that is annoying and not viable for automated testing. We then need to produce some form of archive with the files. The first option that comes to mind is .a files since we already have code for writing them. There are a few problems with them The format has a dedicated string table, so we cannot start writing it until all members are known. Regular implementations don't support creating directories. We could make llvm-ar support that, but that is probably not a good idea. The next natural option would be tar. The problem is that to support long path names (which is how this started) it needs a "pax extended header" making this an annoying format to write. The next option I looked at seems a natural fit: cpio files. They are available on pretty much every unix, support directories and long path names and are really easy to write. The only slightly annoying part is a terminator, but at least gnu cpio only prints a warning if it is missing, which is handy for crashes. This patch still makes an effort to always create it. llvm-svn: 268404
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
//===- Driver.h -------------------------------------------------*- C++ -*-===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_ELF_DRIVER_H
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#define LLD_ELF_DRIVER_H
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#include "SymbolTable.h"
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#include "lld/Core/LLVM.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/StringSet.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/raw_ostream.h"
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namespace lld {
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namespace elf {
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extern class LinkerDriver *Driver;
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class LinkerDriver {
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public:
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void main(ArrayRef<const char *> Args);
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void addFile(StringRef Path);
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void addLibrary(StringRef Name);
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llvm::LLVMContext Context;
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// for --reproduce
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std::unique_ptr<llvm::raw_fd_ostream> ReproduceArchive;
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llvm::StringSet<> IncludedFiles;
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private:
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std::vector<MemoryBufferRef> getArchiveMembers(MemoryBufferRef MB);
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llvm::Optional<MemoryBufferRef> readFile(StringRef Path);
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void readConfigs(llvm::opt::InputArgList &Args);
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void createFiles(llvm::opt::InputArgList &Args);
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template <class ELFT> void link(llvm::opt::InputArgList &Args);
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// True if we are in --whole-archive and --no-whole-archive.
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bool WholeArchive = false;
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// True if we are in --start-lib and --end-lib.
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bool InLib = false;
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llvm::BumpPtrAllocator Alloc;
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std::vector<std::unique_ptr<InputFile>> Files;
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std::vector<std::unique_ptr<MemoryBuffer>> OwningMBs;
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};
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// Parses command line options.
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class ELFOptTable : public llvm::opt::OptTable {
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public:
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ELFOptTable();
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llvm::opt::InputArgList parse(ArrayRef<const char *> Argv);
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private:
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llvm::BumpPtrAllocator Alloc;
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};
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// Create enum with OPT_xxx values for each option in Options.td
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enum {
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OPT_INVALID = 0,
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#define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11) OPT_##ID,
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#include "Options.inc"
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#undef OPTION
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};
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void printHelp(const char *Argv0);
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void printVersion();
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void createResponseFile(const llvm::opt::InputArgList &Args);
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void maybeCopyInputFile(StringRef Path, StringRef Buffer);
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std::string findFromSearchPaths(StringRef Path);
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std::string searchLibrary(StringRef Path);
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std::string buildSysrootedPath(llvm::StringRef Dir, llvm::StringRef File);
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} // namespace elf
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} // namespace lld
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#endif
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