labath added a comment.
> I have regression tested it only on Fedora 29 x86_64. I see now it may
> regress OSX but I have no idea what really dsym is.
dsym is a apple-specific format for external storage of debug info. I think the
closest standard equivalent would be a DWP bundle, but there some differences
too (and dsym is much older).
> I do not have OSX available, is it accessible somewhere remotely for LLVM
> development (such as is GCC Compile Farm)?
Unfortunately, I don't think llvm has anything like that, though I think it
would be extremely useful (/me looks at apple folks). If you try hard enough,
you should be able to get clang to produce a dsym bundle for you even on linux.
This did the trick for me:
$ cat /tmp/a.c
void start() asm("start");
void dyld_stub_binder() asm("dyld_stub_binder");
void start() {}
void dyld_stub_binder() {}
$ bin/clang --target=x86_64-apple-darwin --debug /tmp/a.c -o /tmp/a.out
-fuse-ld=lld -nostdlib
ld64.lld: warning: -sdk_version is required when emitting min version load
command. Setting sdk version to match provided min version
$ ls -l /tmp/a.out.dSYM/Contents/Resources/DWARF
total 12
-rw-rw---- 1 pavel pavel 8852 Dec 19 10:24 a.out
Repository:
rLLDB LLDB
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D55859/new/
https://reviews.llvm.org/D55859
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