According to https://github.com/dlang/dmd/blob/e9ba29d71b557fe079e95ee6554f116b24159bab/src/dmd/toobj.d#L524-L528 it appears the compiler intentionally does not produce working object files on Mach-O 64 bit.
I ran into such a case.
dub run glui:example-scroll
This results in the following error:
```
Performing "debug" build using /Users/steves/.dvm/compilers/dmd-2.100.0/osx/bin/dmd for x86_64.
ddmp 0.0.1-0.dev.3: target for configuration "library" is up to date.
stdx-allocator 2.77.5: target for configuration "library" is up to date.
libdparse 0.14.0: target for configuration "library" is up to date.
fluent-asserts 0.13.3: target for configuration "library" is up to date.
glui 0.5.0+commit.2.ge5c75a0: target for configuration "raylib3" is up to date.
glui:example-scroll 0.5.0+commit.2.ge5c75a0: building configuration "application"...
Linking...
ld: in .dub/build/raylib3-debug-posix.osx.darwin-x86_64-dmd_v2.100.0-C3319142170DADE6FCBC42540E140297/libglui.a(style_macros_2be_a0bf.o), in section __TEXT,__textcoal_nt reloc 0: symbol index out of range
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: linker exited with status 1
```
This matches the description in the source (added with this PR: https://github.com/dlang/dmd/pull/10680)
Note: you have to change the source for glui at the moment, or it won't build at all. Comment out the offending version line to see the error. I have a PR to fix this, will update once it is merged/released.
Comment #1 by bugzilla — 2022-05-17T15:32:55Z
But the linked=to line in toobj.d specifically excludes OBJ_MACH because of the error.
Comment #2 by schveiguy — 2022-05-17T17:08:13Z
I am completely ignorant on the compiler code. Iain noticed the same message in the comment and thought it might be related.
But in any case, I *am* getting this error. So it may be happening elsewhere.
Comment #3 by schveiguy — 2022-05-17T17:10:40Z
A further note, until I upgraded xcode, I was not having errors. So it's likely some increase in strictness that the linker now requires.
Comment #4 by robert.schadek — 2024-12-13T19:22:53Z