Could we configure the cross compiler so that os_type = Win32 ? about opam-cross-windows HOT 5 CLOSED

+1 on this one. I can provide a patch if we agree on it.

from opam-cross-windows.

@toots Can you please investigate the root cause? It's related to the Sys.os_type primitive; we might need to patch the codegen to fix that.

from opam-cross-windows.

Indeed:
wine ~/.opam/4.04.0/windows-sysroot/bin/ocamlopt.exe -config answers correctly
[...] os_type: Win32 [...]
but
~/.opam/4.04.0/.opam/for_nightly/bin/ocamlrun ~/.opam/4.04.0/windows-sysroot/bin/ocamlopt.exe -config i.e. ~/.opam/4.04.0/windows-sysroot/bin/ocamlopt -config answers
os_type: Unix

This is because Sys.os_type comes from Sys.get_config which is an external and that's made on purpose to make (normal) byte code executable cross-platform!

The ugliest possible hack would be to do (for the all cross compiler) in stdlib/sys.mlp

- let (os_type, _, _) = get_config()
+ let (os_type, _, _) = "Win32"

but that's looks super dirty.

from opam-cross-windows.

I remember having to do that with the Debian cross-compiler patches back in the days. Rather than patching, it looks like the perfect candidate for integration upstream. Now, how should cross-compilation be properly marked and detected by the compiler?

from opam-cross-windows.

ifneq ($(TARGET),$(HOST)) in Makefiles

from opam-cross-windows.