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POLinking against clang-llvm
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copied!<p>I've been working on a small tool with clang/llvm but I haven't been able to successfully get g++ and gnu's linker to properly link my code against clang.</p> <p>my linker is generating the following errors:</p> <pre><code>undefined reference to `clang::FileManager::~FileManager()' undefined reference to `clang::FileManager::FileManager()' undefined reference to `llvm::sys::getHostTriple()' undefined reference to `clang::Diagnostic::Diagnostic(clang::DiagnosticClient*)' undefined reference to `llvm::outs()' undefined reference to `clang::TargetInfo::CreateTargetInfo(clang::Diagnostic&, clang::TargetOptions&)' undefined reference to `clang::SourceManager::getOrCreateContentCache(clang::FileEntry const*)' undefined reference to `clang::SourceManager::createFileID(clang::SrcMgr::ContentCache const*, clang::SourceLocation, clang::SrcMgr::CharacteristicKind, unsigned int, unsigned int)' </code></pre> <p>my compile commands looks like this:</p> <pre><code>g++ -g -fno-rtti -I~/llvm-2.8/tools/clang-2.8/include \ -I~/llvm-2.8/llvm/include \ `~/bin/llvm-config --cxxflags` \ -c Frontend.cpp g++ -g -fno-rtti -I~/llvm-2.8/tools/clang-2.8/include \ -I~/llvm-2.8/llvm/include \ `~/bin/llvm-config --cxxflags` \ -c exec.cpp g++ -I~/llvm-2.8/tools/clang-2.8/include \ -I~/llvm-2.8/llvm/include -L~/opt/lib/ \ -g -fno-rtti -lclangDriver -lclangAnalysis \ -lclangFrontend -lclangSema -lclangAST -lclangParse \ -lclangLex -lclangBasic \ `~/bin/llvm-config --cxxflags --ldflags --libs` \ Frontend.o exec.o -o run </code></pre> <p>any tips or advice would be welcomed.</p> <p>cheers, ct</p> <p>PS: I've been exploring some of the information on this page:</p> <p><a href="http://ubuntuforums.org/showthread.php?t=532693" rel="nofollow">http://ubuntuforums.org/showthread.php?t=532693</a></p> <p>and it might do the trick, will post a comment on that tip when I can.</p> <h2>Solution</h2> <p>using clang code from this tutorial (which had to be modified to remove the references to FileSystemOptions b/c clang/Basic/FileSystemOptions.h doesn't exist in clang-2.8): <a href="http://clangtutorial.codeplex.com/" rel="nofollow">http://clangtutorial.codeplex.com/</a></p> <pre><code>g++ tutorial1.cpp -g -fno-rtti -lclangFrontend -lclangDriver \ -lclangCodeGen -lclangSema -lclangChecker -lclangAnalysis \ -lclangRewrite -lclangAST -lclangParse -lclangLex -lclangBasic \ -lLLVMSupport -lLLVMSystem -I~/opt/include/ \ `llvm-config --cxxflags --ldflags --libs all` </code></pre> <p>seemed to do the trick!</p>

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