问题描述
我为正在编写的课程编写了一个编译器。该类不是特别的Haskell,但我使用Haskell编写我的编译器和解释器。我有一个cabal包安装程序,希望可以让我的教授轻松运行/编译。我有两个可执行文件在build-tools字段中都很开心,但是Cabal忽略了这一点,然后抱怨说找不到Happy和Alex应该生成的模块。如果我手动运行:
I'm writing a compiler for a class I'm taking. The class isn't specifically Haskell but I'm using Haskell to write my compiler and interpreter. I have a cabal package setup to hopefully make it easy for my prof to run/compile. I have happy and alex in the build-tools field for both executables but Cabal ignores that and then complains that it cannot find the modules that Happy and Alex should be generating. If I manually run:
alex LimpScanner.x
happy LimpParser.y
然后cabal完美地运行。
then cabal runs perfectly.
我以为我有cabal会自动运行它们,或许我记不完美。
I thought I had cabal automatically running them earlier but perhaps I remember imperfectly.
limp.cabal:
limp.cabal:
-- limp.cabal auto-generated by cabal init. For additional options,
-- see
-- http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/authors.html#pkg-descr.
-- The name of the package.
Name: limp
-- The package version. See the Haskell package versioning policy
-- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
-- standards guiding when and how versions should be incremented.
Version: 0.1
-- A short (one-line) description of the package.
Synopsis: LIMP Compiler (Compiler Construction course project)
-- A longer description of the package.
-- Description:
-- URL for the project homepage or repository.
Homepage: http://www.cs.rit.edu/~eca7215/limp/
-- The license under which the package is released.
License: AllRightsReserved
-- The file containing the license text.
License-file: LICENSE
-- The package author(s).
Author: Edward Amsden
-- An email address to which users can send suggestions, bug reports,
-- and patches.
Maintainer: [email protected]
-- A copyright notice.
-- Copyright:
Category: Language
Build-type: Simple
-- Extra files to be distributed with the package, such as examples or
-- a README.
-- Extra-source-files:
-- Constraint on the version of Cabal needed to build this package.
Cabal-version: >=1.2
Executable limp
-- .hs or .lhs file containing the Main module.
Main-is: Limp.hs
hs-source-dirs: src
-- Packages needed in order to build this package.
Build-depends: base, array, haskell98
-- Modules not exported by this package.
-- Other-modules:
-- Extra tools (e.g. alex, hsc2hs, ...) needed to build the source.
Build-tools: alex, happy
Executable limpi
Main-is: LimpInterpreter.hs
hs-source-dirs: src
Build-depends: base, array, haskell98
Build-tools: alex, happy
目录布局:
limp/
├── Setup.hs
├── limp.cabal
└── src/
├── Limp.hs
├── LimpInterpreter.hs
├── LimpParser.ly
├── LimpScanner.x
└── LimpToken.hs
推荐答案
显然我错过的其实是其他模块:字段。一旦添加了这个内容,愉快地(赦免双关语)建立我的翻译。
Apparently what I was missing was actually the Other-modules: field. Once this was added, cabal happily (pardon the pun) built my interpreter.
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