在尝试使用Windows 7(64位)上的MinGW / MSYS构建Erlang RabbitMQ插件时遇到上述错误。我正在使用Erlang v5.10.3(32位)。我可以在我的系统上运行RabbitMQ。
Fujitsu@Notebook /d/RabbitMQ/build-source/rabbitmq-public-umbrella/presence-exchange-master
$ make
[elided] generate deps
escript: exception error: no match of right hand side value {error,enoent}
in function generate_deps__escript__1389__793192__493000:detect_deps/5 (d:/RabbitMQ/build-source/rabbitmq-public-umbrella/generate_deps, line 40)
in call from generate_deps__escript__1389__793192__493000:'-main/1-fun-0-'/6 (d:/RabbitMQ/build-source/rabbitmq-public-umbrella/generate_deps, line 19)
in call from lists:foldl/3 (lists.erl, line 1248)
in call from generate_deps__escript__1389__793192__493000:main/1 (d:/RabbitMQ/build-source/rabbitmq-public-umbrella/generate_deps, line 17)
in call from escript:run/2 (escript.erl, line 747)
in call from escript:start/1 (escript.erl, line 277)
in call from init:start_it/1 (init.erl, line 1054)
in call from init:start_em/1 (init.erl, line 1034)
我在pastebin上发布了完整的错误 - http://pastebin.com/S739wfhB 可以在此处找到generate_deps的完整代码 - http://pastebin.com/N4HVz8z1
聚苯乙烯。我也试过使用CYGWIN,但它返回另一个错误 - escript:无法打开文件:/ home / Fujitsu / rabbitmq / build-source / rabbitmq-public-umbrella / generate_deps
编辑1
CYGWIN返回:
$ make
[elided] generate deps
escript: Failed to open file: /cygdrive/d/RabbitMQ/build-source/rabbitmq-public-umbrella/generate_deps
[elided] generate deps
escript: Failed to open file: /cygdrive/d/RabbitMQ/build-source/rabbitmq-public-umbrella/generate_deps
make: *** No rule to make target 'build/deps.mk', needed by 'ebin/presence_exchange.beam'. Stop.
但是,我可以使用head命令打开文件。
Fujitsu@Notebook /cygdrive/d/RabbitMQ/build-source/rabbitmq-public-umbrella/presence-exchange-master
$ head /cygdrive/d/RabbitMQ/build-source/rabbitmq-public-umbrella/generate_deps
#!/usr/bin/env escript
%% -*- erlang -*-
-mode(compile).
%% We expect the list of Erlang source and header files to arrive on
%% stdin, with the entries colon-separated.
main([TargetFile, EbinDir]) ->
ErlsAndHrls = [ string:strip(S,left) ||
S <- string:tokens(io:get_line(""), ":\n")],
ErlFiles = [F || F <- ErlsAndHrls, lists:suffix(".erl", F)],
答案 0 :(得分:1)
这很可能是因为它无法找到您尝试打开的文件,这就是POSIX enoent
错误的含义。使用cygwin时更明确。 erlang badmatch
错误来自第23行:
{ok, Hdl} = file:open(TargetFile, [write, delayed_write]),
您尝试在{ok, Hld}
上打开文件并进行匹配。但是,file:open
在找不到文件时返回{error,enoent}
,这会导致匹配失败并生成erlang错误。
修改强>
我认为问题在于它正在尝试编写的文件。你被允许写在那个目录中吗?如果文件已经存在,你可以打开它进行写作吗?