diff options
Diffstat (limited to 'lib/Driver/Tools.cpp')
| -rw-r--r-- | lib/Driver/Tools.cpp | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index 31d436018450..270ed0a4e756 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -7637,23 +7637,23 @@ void darwin::Linker::AddLinkArgs(Compilation &C, const ArgList &Args, CmdArgs.push_back("-object_path_lto"); CmdArgs.push_back(TmpPath); } + } - // Use -lto_library option to specify the libLTO.dylib path. Try to find - // it in clang installed libraries. If not found, the option is not used - // and 'ld' will use its default mechanism to search for libLTO.dylib. - if (Version[0] >= 133) { - // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib - StringRef P = llvm::sys::path::parent_path(D.getInstalledDir()); - SmallString<128> LibLTOPath(P); - llvm::sys::path::append(LibLTOPath, "lib"); - llvm::sys::path::append(LibLTOPath, "libLTO.dylib"); - if (llvm::sys::fs::exists(LibLTOPath)) { - CmdArgs.push_back("-lto_library"); - CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath)); - } else { - D.Diag(diag::warn_drv_lto_libpath); - } - } + // Use -lto_library option to specify the libLTO.dylib path. Try to find + // it in clang installed libraries. ld64 will only look at this argument + // when it actually uses LTO, so libLTO.dylib only needs to exist at link + // time if ld64 decides that it needs to use LTO. + // Since this is passed unconditionally, ld64 will never look for libLTO.dylib + // next to it. That's ok since ld64 using a libLTO.dylib not matching the + // clang version won't work anyways. + if (Version[0] >= 133) { + // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib + StringRef P = llvm::sys::path::parent_path(D.Dir); + SmallString<128> LibLTOPath(P); + llvm::sys::path::append(LibLTOPath, "lib"); + llvm::sys::path::append(LibLTOPath, "libLTO.dylib"); + CmdArgs.push_back("-lto_library"); + CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath)); } // Derived from the "link" spec. |
