Original bug ID: 6779
Reporter: @whitequark
Assigned to: @damiendoligez
Status: closed (set by @xavierleroy on 2016-12-07T10:29:43Z)
Resolution: fixed
Priority: normal
Severity: minor
Target version: 4.02.2+dev / +rc1
Fixed in version: 4.02.2
Category: ~DO NOT USE (was: OCaml general)
Related to: #6845
Monitored by: @gasche

Bug description

The reason is that Symtable.num_of_prim uses Dll, but a cross-compiler cannot load shared libraries at compile-time. Thus a cross-compiler should always build executables with -custom, or at least do that if any cma's using custom primitives are linked in.

Alternatively, just drop the check entirely if cross-compiling. It does not seem to serve any purpose besides making really sure that the primitive actually exists.