牛仔示例无法编译

Question

我尝试从 Cowboy 示例中制作 Cookie 示例，但出现下一个错误： .................................................. Finished in 16.335 seconds 770 tests, 0 failures ERLC cookie_app.erl cookie_sup.erl toppage_handler.erl DTL toppage.dtl {"init terminating in do_boot",{undef,[{merl,term,[<<237 bytes>>],[]},{erlydtl_beam_compiler,string_ast,2,[{file,"src/erlydtl_beam_compiler.erl"},{line,966}]},{lists,mapfoldl,3,[{file,"lists.erl"},{line,1352}]},{erlydtl_beam_compiler,body_ast,3,[{file,"src/erlydtl_beam_compiler.erl"},{line,685}]},{erlydtl_beam_compiler,compile_to_binary,3,[{file,"src/erlydtl_beam_compiler.erl"},{line,195}]},{erlydtl_compiler,compile,1,[{file,"src/erlydtl_compiler.erl"},{line,206}]},{erl_eval,do_apply,6,[{file,"erl_eval.erl"},{line,657}]},{erl_eval,eval_lc1,6,[{file,"erl_eval.erl"},{line,683}]}]}} Crash dump was written to: erl_crash.dump init terminating in do_boot () make: * [ebin/cookie.app] Error 1

有人面临同样的麻烦吗？怎么了？

Answer 1

我以前没用过牛仔。根据错误消息，merl 应用程序不包括在内。试试rebar delete-deps rebar clean rebar get-deps

然后再次编译cowboy。

Answer 2

正如假设的那样，问题的根源在于依赖关系。我将ebin 和src 文件夹从~/cowboy/examples/cookie/deps/erlydtl/deps/merl 移动到/usr/local/lib/erlang/lib/merl，然后成功构建了应用程序。