Reid Spencer | 04f5412 | 2004-12-13 03:13:18 +0000 | [diff] [blame] | 1 | //===- lib/Linker/LinkFiles.cpp - Link LLVM bytecode files ---------------===// |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Reid Spencer | 04f5412 | 2004-12-13 03:13:18 +0000 | [diff] [blame] | 5 | // This file was developed by Reid Spencer and is distributed under the |
| 6 | // University of Illinois Open Source License. See LICENSE.TXT for details. |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Reid Spencer | 04f5412 | 2004-12-13 03:13:18 +0000 | [diff] [blame] | 10 | // This file contains routines to handle linking together LLVM bytecode files. |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "llvm/Linker.h" |
| 15 | #include "llvm/Module.h" |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 16 | |
| 17 | using namespace llvm; |
| 18 | |
| 19 | /// LinkInFile - opens a bytecode file and links in all objects which |
| 20 | /// provide symbols that are currently undefined. |
| 21 | /// |
| 22 | /// Inputs: |
Reid Spencer | 04f5412 | 2004-12-13 03:13:18 +0000 | [diff] [blame] | 23 | /// File - The pathname of the bytecode file. |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 24 | /// |
| 25 | /// Outputs: |
| 26 | /// ErrorMessage - A C++ string detailing what error occurred, if any. |
| 27 | /// |
| 28 | /// Return Value: |
| 29 | /// TRUE - An error occurred. |
| 30 | /// FALSE - No errors. |
| 31 | /// |
| 32 | bool |
| 33 | Linker::LinkInFile(const sys::Path &File) |
| 34 | { |
| 35 | // Make sure we can at least read the file |
| 36 | if (!File.readable()) |
| 37 | return error("Cannot find linker input '" + File.toString() + "'"); |
| 38 | |
| 39 | // A user may specify an ar archive without -l, perhaps because it |
| 40 | // is not installed as a library. Detect that and link the library. |
| 41 | if (File.isArchive()) { |
| 42 | if (LinkInArchive(File)) |
| 43 | return error("Cannot link archive '" + File.toString() + "'"); |
| 44 | } else if (File.isBytecodeFile()) { |
| 45 | verbose("Linking bytecode file '" + File.toString() + "'"); |
| 46 | |
| 47 | std::auto_ptr<Module> M(LoadObject(File)); |
| 48 | if (M.get() == 0) |
| 49 | return error("Cannot load file '" + File.toString() + "'" + Error); |
| 50 | if (LinkInModule(M.get())) |
| 51 | return error("Cannot link file '" + File.toString() + "'" + Error); |
| 52 | |
| 53 | verbose("Linked in file '" + File.toString() + "'"); |
| 54 | } else { |
| 55 | return warning("File of unknown type '" + File.toString() + "' ignored."); |
| 56 | } |
| 57 | return false; |
| 58 | } |
| 59 | |
| 60 | /// LinkFiles - takes a module and a list of files and links them all together. |
| 61 | /// It locates the file either in the current directory, as its absolute |
| 62 | /// or relative pathname, or as a file somewhere in LLVM_LIB_SEARCH_PATH. |
| 63 | /// |
| 64 | /// Inputs: |
Reid Spencer | 04f5412 | 2004-12-13 03:13:18 +0000 | [diff] [blame] | 65 | /// Files - A vector of sys::Path indicating the LLVM bytecode filenames |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 66 | /// to be linked. The names can refer to a mixture of pure LLVM |
| 67 | /// bytecode files and archive (ar) formatted files. |
| 68 | /// |
Reid Spencer | 3ece639 | 2004-12-13 02:59:41 +0000 | [diff] [blame] | 69 | /// Return value: |
| 70 | /// FALSE - No errors. |
| 71 | /// TRUE - Some error occurred. |
| 72 | /// |
| 73 | bool |
| 74 | Linker::LinkInFiles(const std::vector<sys::Path> &Files) |
| 75 | { |
| 76 | for (unsigned i = 0; i < Files.size(); ++i) { |
| 77 | if (LinkInFile(Files[i])) |
| 78 | return true; |
| 79 | } |
| 80 | return false; |
| 81 | } |