bindings Makefile: only invoke `opam var prefix` if opam is available

mirage / mirage-solo5

Solo5 core platform libraries for MirageOS

ISC License

20 stars 21 forks source link

bindings Makefile: only invoke `opam var prefix` if opam is available #79

Closed hannesm closed 2 years ago

hannesm commented 2 years ago

Such a change has been trickled through other MirageOS3 cross-compilation Makefiles as well. Also, use opam var prefix, not the deprecated opam config var prefix. This also allows clean NixOS compilation.