[Bug sanitizer/101111] xgcc cross-compiler for x86_64-apple-darwin in GCC 11.1 doesn't generate weak symbols, resulting in undefined reference to ___lsan_default_suppressions

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101111

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Mosè Giordano from comment #2) 
> GCC uses libtool checks to set these flags:
> <https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libsanitizer/configure;
> h=1d9ae59be6798555b7020a66e0f622ff8bf752cc;
> hb=50bc9185c2821350f0b785d6e23a6e9dcde58466#l8839>.  This is a check on
> `$host_cpu-$host_os`, however I'm compiling a cross-compiler (`build == host
> == x86_64-linux-musl`, `target == x86_64-apple-darwin`, I may have been
> inaccurate before), so shouldn't this check use `$target_cpu-$target_os`
> instead?

No host usage here is correct.  This is a (target) library which means the host
(and target) are set x86_64-apple-darwin and the build is set to
x86_64-linux-musl.