Andrew Wilkins 55390f2377 Enable linking tools, shared libraries against libLLVM ... Summary: Three closely related changes, to have a mode in which we link all executables and shared libraries against libLLVM. 1. Add a new LLVM_LINK_LLVM_DYLIB cmake option, which, when ON, will link executables and shared libraries against libLLVM. For this to work, it is necessary to also set LLVM_BUILD_LLVM_DYLIB and LLVM_DYLIB_EXPORT_ALL. It is not strictly necessary to set LLVM_DISABLE_LLVM_DYLIB_ATEXIT, but we also default to OFF in this mode, or tools tend to misbehave (e.g. stdout may not flush on exit when output is buffered.) llvm-config and Tablegen do not use libLLVM, as they are dependencies of libLLVM. 2. Modify llvm-go to take a new flag, "linkmode=component-libs|dylib". Depending on which one is passed (default is component-libs), we link with the individual libraries or libLLVM respectively. We pass in dylib when LLVM_LINK_LLVM_DYLIB is ON. 3. Fix LLVM_DYLIB_EXPORT_ALL on Linux, and expand the symbols exported to actually export all. Don't strip leading underscore from symbols on Linux, and make sure we get all exported symbols and weak-with-default symbols ("W" in nm output). Without these changes, passes won't load because the "Annotate..." symbols defined in lib/Support/Valigrind.cpp are not found. Testing: - Ran default build ("ninja") with LLVM, clang, compiler-rt, llgo, lldb. - Ran "check", "check-clang", "check-tsan", "check-libgo" targets. I've never had much success with LLDB tests, and llgoi is currently broken so check-llgo fails for an unrelated reason. - Ran "lldb" to ensure it loads. Reviewers: chandlerc, beanz, pcc, rnk Subscribers: rnk, chapuni, sylvestre.ledru, llvm-commits Differential Revision: http://reviews.llvm.org/D12488 llvm-svn: 246527		2015-09-01 03:14:31 +00:00
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CMakeLists.txt
llvm-go.go
Makefile