<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">MachO support in lld is not really ready for real world usage. It was able to bootstrap itself a couple of years ago, but, it has not really been maintained or further developed since. I would recommend that you use ld64 if you are intending to build MachO binaries.<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 7, 2018, at 9:57 AM, Don Hinton via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" class="">llvm-dev@lists.llvm.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I'm seeing something similar. <div class=""><br class=""></div><div class="">clang is using HOST_LINK_VERSION, obtained from ld64, as the default for -mlinker-version. This causes Darwin.cpp to add the arguments you are seeing, but not handled by lld. Perhaps -fuse-ld should be considered in addition to -mlinker-version when adding these arguments.</div><div class=""><br class=""></div><div class="">As a workaround, you can try passing -mlinker-version. Looks like anything < 133 will work, including 0.<br class=""></div><div class=""><br class=""></div><div class="">hth...</div><div class="">don</div><div class=""><div class=""><br class=""></div><div class=""><br class=""></div></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Thu, Jan 4, 2018 at 1:14 AM, Julio César Rocha via llvm-dev <span dir="ltr" class=""><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank" class="">llvm-dev@lists.llvm.org</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class=""><div class="gmail_quote"><div dir="ltr" class="">Hi. I'm using LLVM 5.0.1 on macOS 10.12.<div class=""><br class=""></div><div class="">I have a very simple program (program.c):</div><div class=""><div class="">int main() {}</div></div><div class=""><br class=""></div><div class="">When attempting to compile with LLD, I get this output:</div><div class=""><div class="">$ clang -fuse-ld=lld program.c</div><div class="">/opt/llvm/5.0.1/bin/ld.lld: error: unknown argument: -no_deduplicate</div><div class="">/opt/llvm/5.0.1/bin/ld.lld: error: unknown argument: -dynamic</div><div class="">/opt/llvm/5.0.1/bin/ld.lld: error: unknown argument: -arch</div><div class="">/opt/llvm/5.0.1/bin/ld.lld: error: unknown emulation: acosx_version_min</div><div class="">/opt/llvm/5.0.1/bin/ld.lld: error: unable to find library -lto_library</div><div class="">/opt/llvm/5.0.1/bin/ld.lld: error: /opt/llvm/5.0.1/lib/libLTO.dyl<wbr class="">ib: invalid data encoding</div><div class="">clang-5.0: error: linker command failed with exit code 1 (use -v to see invocation)</div></div><div class=""><br class=""></div><div class="">Looks like the flags passed to the linker are just wrong, but can't find any relevant documentation at <a href="http://llvm.org/docs" target="_blank" class="">llvm.org/docs</a>.</div><div class=""><br class=""></div><div class="">Please help?</div></div></div>
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