Reid Spencer | 7a87ce0 | 2004-12-13 03:00:04 +0000 | [diff] [blame] | 1 | //===- lib/Linker/LinkLibraries.cpp - Link LLVM libraries -----------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Reid Spencer | ff5f3ab | 2004-12-13 03:23:13 +0000 | [diff] [blame] | 5 | // This file was developed by Reid Spencer and is distributed under the |
Reid Spencer | 7a87ce0 | 2004-12-13 03:00:04 +0000 | [diff] [blame] | 6 | // University of Illinois Open Source License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file contains routines to handle finding libraries and linking them in. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "llvm/Linker.h" |
| 15 | #include "llvm/Module.h" |
| 16 | |
| 17 | using namespace llvm; |
| 18 | |
| 19 | /// LinkInLibrary - links one library into the HeadModule |
| 20 | bool |
| 21 | Linker::LinkInLibrary(const std::string& Lib) |
| 22 | { |
| 23 | // Determine where this library lives. |
| 24 | sys::Path Pathname = FindLib(Lib); |
| 25 | if (Pathname.isEmpty()) |
| 26 | return warning("Cannot find library '" + Lib + "'"); |
| 27 | |
| 28 | // If its an archive, try to link it in |
| 29 | if (Pathname.isArchive()) { |
| 30 | if (LinkInArchive(Pathname)) { |
| 31 | return error("Cannot link archive '" + Pathname.toString() + "'"); |
| 32 | } |
| 33 | } else { |
| 34 | return warning("Supposed library '" + Lib + "' isn't a library."); |
| 35 | } |
| 36 | return false; |
| 37 | } |
| 38 | |
| 39 | /// LinkLibraries - takes the specified library files and links them into the |
| 40 | /// main bytecode object file. |
| 41 | /// |
| 42 | /// Inputs: |
| 43 | /// Libraries - The list of libraries to link into the module. |
| 44 | /// |
| 45 | /// Return value: |
| 46 | /// FALSE - No error. |
| 47 | /// TRUE - Error. |
| 48 | /// |
| 49 | bool |
| 50 | Linker::LinkInLibraries(const std::vector<std::string> &Libraries) { |
| 51 | |
| 52 | // Process the set of libraries we've been provided |
| 53 | for (unsigned i = 0; i < Libraries.size(); ++i) { |
| 54 | if (LinkInLibrary(Libraries[i])) |
| 55 | return true; |
| 56 | } |
| 57 | |
| 58 | // At this point we have processed all the libraries provided to us. Since |
| 59 | // we have an aggregated module at this point, the dependent libraries in |
| 60 | // that module should also be aggregated with duplicates eliminated. This is |
| 61 | // now the time to process the dependent libraries to resolve any remaining |
| 62 | // symbols. |
| 63 | const Module::LibraryListType& DepLibs = Composite->getLibraries(); |
| 64 | for (Module::LibraryListType::const_iterator I = DepLibs.begin(), |
| 65 | E = DepLibs.end(); I != E; ++I) { |
| 66 | if (LinkInLibrary(*I)) |
| 67 | return true; |
| 68 | } |
| 69 | return false; |
| 70 | } |