C++ cryptopp外部库依赖项

我试图在Arch Linux（3.12.9）上通过cabal安装happstack server tls软件包，但出现以下错误：

Resolving dependencies...
Configuring happstack-server-tls-7.1.0...
Failed to install happstack-server-tls-7.1.0
Last 10 lines of the build log ( /home/boris/.cabal/logs/happstack-server-tls-7.1.0.log ):
Configuring happstack-server-tls-7.1.0...
/bin/sh: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
setup-Cabal-1.16.0-x86_64-linux-ghc-7.6.3: Missing dependency on a foreign
library:
* Missing C library: cryptopp
This problem can usually be solved by installing the system package that
provides this library (you may need the "-dev" version). If the library is
already installed but in a non-standard location then you can use the flags
--extra-include-dirs= and --extra-lib-dirs= to specify where it is.
cabal: Error: some packages failed to install:
happstack-server-tls-7.1.0 failed during the configure step. The exception
was:
ExitFailure 1

在第一次看到此错误消息后，我通过pacman安装了

crypto++

。但这对我没有帮助

我甚至试过：

$ whereis libcryptopp.a                                                                                           
libcryptopp: /usr/lib/libcryptopp.so
$ cabal install happstack-server-tls --extra-include-dirs=/usr/lib/ --extra-lib-dirs=/usr/lib/

但还是没有运气

我检查了crypto++库是否与这个test.cpp文件一起工作：

#include <iostream>
using std::cout;
using std::endl;

#include "cryptopp/integer.h"
using CryptoPP::Integer;

int main( int, char** ) {

    Integer i;

    cout << "i: " << i << endl;

    return 0;
}

但是，还是没有运气

---

有人面对过这个问题吗？有什么解决办法吗

运行

cabal unpack happstack server tls

以获取并解压缩本地目录中的源代码。然后编辑happstack服务器tls.cabal并尝试删除以下行：

if !os(darwin)
    Extra-Libraries: cryptopp

---

非常感谢你。它帮助了我。但为什么会这样？我不太确定。一些复杂的事情，包括链接和模板haskell和错误消息，我想？

if !os(darwin)
    Extra-Libraries: cryptopp