Author: phosek Date: Wed May 29 18:34:41 2019 New Revision: 362048 URL: http://llvm.org/viewvc/llvm-project?rev=362048&view=rev Log: [runtimes] Support ELF dependent libraries feature
As of r360984, LLD supports dependent libraries feature for ELF. libunwind, libc++abi and libc++ have library dependencies: libdl librt and libpthread, which means that when libunwind and libc++ are being statically linked (using -static-libstdc++ flag), user has to manually specify -ldl -lpthread which is onerous. This change includes the lib pragma to specify the library dependencies directly in the source that uses those libraries. This doesn't make any difference when using linkers that don't support dependent libraries. However, when using LLD that has dependent libraries feature, users no longer have to manually specifying library dependencies when using static linking, linker will pick the library automatically. Differential Revision: https://reviews.llvm.org/D62090 Modified: libunwind/trunk/src/AddressSpace.hpp libunwind/trunk/src/RWMutex.hpp Modified: libunwind/trunk/src/AddressSpace.hpp URL: http://llvm.org/viewvc/llvm-project/libunwind/trunk/src/AddressSpace.hpp?rev=362048&r1=362047&r2=362048&view=diff ============================================================================== --- libunwind/trunk/src/AddressSpace.hpp (original) +++ libunwind/trunk/src/AddressSpace.hpp Wed May 29 18:34:41 2019 @@ -27,6 +27,9 @@ #if _LIBUNWIND_USE_DLADDR #include <dlfcn.h> +#if defined(__unix__) && defined(__ELF__) && defined(__clang__) +#pragma comment(lib, "dl") +#endif #endif #ifdef __APPLE__ Modified: libunwind/trunk/src/RWMutex.hpp URL: http://llvm.org/viewvc/llvm-project/libunwind/trunk/src/RWMutex.hpp?rev=362048&r1=362047&r2=362048&view=diff ============================================================================== --- libunwind/trunk/src/RWMutex.hpp (original) +++ libunwind/trunk/src/RWMutex.hpp Wed May 29 18:34:41 2019 @@ -17,6 +17,9 @@ #include <windows.h> #elif !defined(_LIBUNWIND_HAS_NO_THREADS) #include <pthread.h> +#if defined(__unix__) && defined(__ELF__) && defined(__clang__) +#pragma comment(lib, "pthread") +#endif #endif namespace libunwind { _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
