我有一个 C 库“myboo”,其中包含 Makefile。我想制作这个库的包装。
我不想将其安装到 /usr/local 中,因为“myboo”不是主要模块。
另外,建议我构建“myboo”而不是动态库
但作为静态库。
我制作自定义Setup.py来构建“myboo”;
main :: IO ()
main = defaultMainWithHooks simpleUserHooks {
preBuild = \a b -> makeLib a b >> preBuild simpleUserHooks a b
}
makeLib :: Args -> BuildFlags -> IO ()
makeLib _ flags = do
let verbosity = fromFlag $ buildVerbosity flags
cflags <- lookupEnv "CFLAGS" >>= return . maybe "" id
setEnv "CFLAGS" $ "-fPIC" ++ (' ' : cflags)
rawSystemExit verbosity "env" ["make", "--directory=myboo", "libmyboo.a"]
我安排 myboo.cabal 将我的 haskell 代码链接到 C 库;
library
exposed-modules: MyBoo
build-depends: base >=4.7 && <4.8
hs-source-dirs: src
default-language: Haskell2010
include-dirs: myboo
extra-libraries: myboo
extra-lib-dirs: myboo
当我运行“cabal build”时,我收到以下消息。
myboo-0.1.0.0: library-dirs: myboo is a relative path which makes no sense (as
there is nothing for it to be relative to). You can make paths relative to the
package database itself by using ${pkgroot}. (use --force to override)
如果我写“extra-lib-dirs: /absolute/path/to/working/dir/myboo”,看起来效果很好。
但这不是好方法,因为 /absolute/... 只是一个工作目录。
我应该如何修复以上错误消息?我的环境就在这里;
% ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.8.2
% cabal --version
cabal-install version 1.20.0.2
using version 1.20.0.0 of the Cabal library
% cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"