2025-09-15

Linkers: correctly pass flags for $(ldflags-shared)

Summary: Apple platforms required a set of linker flags to be always present, so ensure `$(ldflags-shared)` macro that can be used in `cxx_genrule()` contains them.

Reviewed By: rmaz

Differential Revision: D82305068

fbshipit-source-id: d74067717971935fde6ace39edb3bd1f052e5686