On Wednesday, 11 October 2023 at 12:36:58 UTC, Paul wrote:
What does the extern (c) attribute(?) do?
Does it tell the compiler/linker to build the function like a C
compiler would build a C function? If so what does that mean?
Does it tell the compiler/linker to let C functions know it
exists? If so what does that mean?
Is it meant for the compiler or linker or both?
Thanks for any assistance.
`extern(C)` on module level functions affect the mangling and the
calling convention.
- Mangling is used by the linker to link symbols between objects.
- Calling convention affects the compiler backend in how code is
generated for a CALL instruction.
