我有一个使用 rebar 和这个配置的简单项目：
{sub_dirs, [
"gen",
"apps/basilisk_server",
"rel"
"apps/*"
"ebin"
"deps/*/ebin"
]}.
{erl_opts, [debug_info, fail_on_warning]}.
{
deps,
[
{ email_address, ".*", { git, "git://github.com/mswimmer/erlang-email-address.git", "master"}},
{ gen_smtp , ".*", { git, "https://github.com/Vagabond/gen_smtp.git" , "master"}},
{ pat , ".*", { git, "https://github.com/selectel/pat.git" , "master"}},
{ thrift , ".*", { git, "https://github.com/MustyMustelidae/ThriftErl.git", "master"}}
]
}.
我的目录结构是：
+---.rebar
+---deps
| +---edown
| | +---.rebar
| | +---bin
| | +---doc
| | +---ebin
| | +---priv
| | | \---scripts
| | +---samples
| | \---src
| +---email_address
| | +---.rebar
| | +---ebin
| | +---src
| | \---test
| +---gen_smtp
| | +---.rebar
| | +---ebin
| | +---src
| | +---test
| | \---testdata
| +---gproc
| | +---.rebar
| | +---doc
| | +---ebin
| | +---include
| | +---patches
| | | +---gen_leader
| | | +---kernel
| | | \---stdlib
| | +---priv
| | +---reference
| | +---src
| | +---test
| | | \---eqc
| | \---tetrapak
| +---lager
| | +---.rebar
| | +---ebin
| | +---include
| | +---src
| | \---test
| +---pat
| | +---.rebar
| | +---ebin
| | +---include
| | \---src
| +---proper
| | +---.rebar
| | +---doc
| | +---ebin
| | +---examples
| | +---include
| | +---src
| | \---test
| +---tempo
| | +---.rebar
| | +---c_src
| | +---doc
| | | \---utf8
| | +---ebin
| | +---src
| | \---test
| \---thrift
| +---.rebar
| +---ebin
| +---include
| +---out
| | \---production
| | \---erl
| +---src
| \---test
+---ebin <--- My .app/.beam
\---src <--- My source files
\---gen <---More source files
（对墙感到抱歉）每个依赖项的 ebin 文件夹中都有一个 .app 文件，我正在运行 command erl -pa apps/*/ebin -pa ebin -pa deps/*/ebin。我希望我应该能够application:ensure_all_started(somedep).在“somedep”是依赖项的名称的地方运行，并且在它的 ebin 文件夹中定义了一个 .app。但是当我为其中任何一个运行它时，我得到了错误{error,{somedep,{"no such file or directory","somedep.app"}}}。当我为自己的应用程序运行它时，我得到了正确的响应（{ok,_}）。因为我无法启动依赖项的应用程序，所以我自己的应用程序失败并出现undef错误。我是否错过了向 shell 注册我的 .app 文件的步骤？