MirageOS - 无法为XEN构建unikernel

Question

我编写了一个简单的基于MirageOS的Unikernel来执行基本的HTTP GET调用.虽然当我将它作为Unix二进制文件运行时它没有任何问题,但是当我为XEN(mirage configure --xen)配置它并启动make命令时,我得到以下错误:

ocamlbuild -use-ocamlfind -pkgs lwt.syntax,cohttp.lwt,cohttp.lwt-core,mirage-console.xen,mirage-http,mirage-types.lwt -tags "syntax(camlp4o),annot,bin_annot,strict_sequence,principal" -tag-line "<static*.*>: -syntax(camlp4o)" -cflag -g -lflags -g,-linkpkg,-dontlink,unix main.native.o
+ ocamlfind ocamlopt -g -linkpkg -dontlink unix -output-obj -package mirage-types.lwt -package mirage-http -package mirage-console.xen -package cohttp.lwt-core -package cohttp.lwt -package lwt.syntax -syntax camlp4o unikernel.cmx main.cmx -o main.native.o
File "_none_", line 1:
Error: No implementations provided for the following modules:
         Unix referenced from /home/mirage/.opam/system/lib/lwt/lwt-unix.cmxa(Lwt_engine),
           /home/mirage/.opam/system/lib/lwt/lwt-unix.cmxa(Lwt_unix),
           /home/mirage/.opam/system/lib/lwt/lwt-unix.cmxa(Lwt_io),
           /home/mirage/.opam/system/lib/lwt/lwt-unix.cmxa(Lwt_log),
           /home/mirage/.opam/system/lib/ipaddr/ipaddr_unix.cmxa(Ipaddr_unix),
           /home/mirage/.opam/system/lib/xenstore_transport/xenstore_transport_lwt_unix.cmxa(Xs_transport_lwt_unix_client),
           /home/mirage/.opam/system/lib/conduit/conduit-lwt-unix.cmxa(Conduit_lwt_unix),
           /home/mirage/.opam/system/lib/cohttp/cohttp_lwt_unix.cmxa(Cohttp_lwt_unix_debug),
           /home/mirage/.opam/system/lib/cohttp/cohttp_lwt_unix.cmxa(Cohttp_lwt_unix)
Command exited with code 2.
Compilation unsuccessful after building 7 targets (0 cached) in 00:00:03.
make: *** [main.native.o] Error 10

我刚开始使用MirageOS和OCaml,所以这可能是一个愚蠢的问题,但现在我真的不知道该怎么做.

Answer 1

你不应该使用Cohttp_lwt_unix.顾名思义,它在unix上运行,而不是在xen上运行.如果你想要一个xen-proof的网络服务器的例子,你可以看看这个骨架或mirage-seal使用的代码.