LLD error: Mach-O enconding not found

[kassane]

LLVM version: 15.0.0 Zig version: 0.10.0-dev (master) Compiler used: clang-14 (ArchLinux - amd64)

---

Build command: ./build -j 2 native-linux-musl baseline

First stage : build LLVM

Output:

[100%] Built target llvm-reduce
/home/kassane/Code/zig-bootstrap/lld/MachO/Arch/X86_64.cpp:15:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:132: tools/lld/MachO/CMakeFiles/lldMachO.dir/Arch/X86_64.cpp.o] Error 1
make[2]: ** Waiting for other processes to be finished.
/home/kassane/Code/zig-bootstrap/lld/MachO/Arch/ARM64.cpp:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:90: tools/lld/MachO/CMakeFiles/lldMachO.dir/Arch/ARM64.cpp.o] Error 1
In file included from /home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.cpp:9:
/home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.h:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:440: tools/lld/MachO/CMakeFiles/lldMachO.dir/UnwindInfoSection.cpp.o] Error 1
In file included from /home/kassane/Code/zig-bootstrap/lld/MachO/Writer.cpp:22:
/home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.h:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:454: tools/lld/MachO/CMakeFiles/lldMachO.dir/Writer.cpp.o] Error 1
In file included from /home/kassane/Code/zig-bootstrap/lld/MachO/InputSection.cpp:17:
/home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.h:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:258: tools/lld/MachO/CMakeFiles/lldMachO.dir/InputSection.cpp.o] Error 1
In file included from /home/kassane/Code/zig-bootstrap/lld/MachO/ICF.cpp:15:
/home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.h:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:230: tools/lld/MachO/CMakeFiles/lldMachO.dir/ICF.cpp.o] Error 1
In file included from /home/kassane/Code/zig-bootstrap/lld/MachO/MarkLive.cpp:14:
/home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.h:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:300: tools/lld/MachO/CMakeFiles/lldMachO.dir/MarkLive.cpp.o] Error 1
In file included from /home/kassane/Code/zig-bootstrap/lld/MachO/Driver.cpp:23:
/home/kassane/Code/zig-bootstrap/lld/MachO/UnwindInfoSection.h:16:10: fatal error: 'mach-o/compact_unwind_encoding.h' file not found
#include "mach-o/compact_unwind_encoding.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [tools/lld/MachO/CMakeFiles/lldMachO.dir/build.make:160: tools/lld/MachO/CMakeFiles/lldMachO.dir/Driver.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:42422: tools/lld/MachO/CMakeFiles/lldMachO.dir/all] Error 2
make: *** [Makefile:156: all] Error 2

Ref.:

• https://github.com/llvm/llvm-project/issues/54874

[kassane]

Fixed: missing libunwind folder

[matu3ba]

@kassane Does this now work for you? Did you try the nix patch? https://github.com/awakesecurity/nixpkgs/pull/41/files LLVM 15.6 did fix quite some bugs.

[kassane]

@kassane Does this now work for you? Did you try the nix patch? https://github.com/awakesecurity/nixpkgs/pull/41/files LLVM 15.6 did fix quite some bugs.

Cool! Just saw your message yesterday and tested it with the current version of LLVM and there was no longer the problem. The problem is not persisting, I'll close the issue.

[matu3ba]

Looks like LLVM broke standalone builds of lld again with moving mach-o/compact_unwind_encoding.h into dir libunwind and not offering a cmake workaround to reference it. Detected on LLVM 17.0.4 on Windows.

I guess the standard full repo build just works.