To link the output of ‘clang -O4’, you need to have binutils-gold and the LLVM gold plugin (LLVMgold.so) installed, and link with ‘clang -use-gold-plugin’. The Debian package currently doesn’t build or install the gold plugin. But that should easy to fix:
1. Adding binutils-dev (>= 2.20.51.20100222-1~) to BUILDDEPS and --with-binutils-include=/usr/include to llvm_confargs causes LLVMgold.so to be built and installed at /usr/lib/llvm-2.9/lib/LLVMgold.so. 2. clang only looks for the plugin at /usr/lib/LLVMgold.so, while ar and nm only look for the plugin at /usr/lib/bfd-plugins/LLVMgold.so, so the plugin needs to be installed or symlinked to both of those two locations. 3. Since LLVMgold.so depends on libLTO.so and Debian strips rpaths from .so files, libLTO.so needs to be available at /usr/lib/libLTO.so (or somewhere else in the dynamic linker search path). Anders -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
