Question

我尝试在Arch Linux（3.12.9）上通过cabal安装happstack-server-tls软件包，但是出现了这个错误：

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

第一次看到此错误消息后，我通过pacman安装了crypto++。但它没有帮助我。

我甚至试过这个：

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

但仍然没有运气。

我查了一下，如果crypto ++ lib适用于这个test.cpp文件：

#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;
}

并且g++ -g3 -ggdb -O0 -Wall -Wextra -Wno-unused -o test test.cpp -lcryptopp -pthread test.cpp编译得很好。

然后我试着

$ cd /usr/lib
$ g++ -fpic -nostartfiles -nostdlib -shared libcryptopp.so -o libcryptopp.dylib

但又一次，仍然没有运气。

有人遇到过这个问题吗？它有什么解决方案吗？

Answer 1

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-server-tls.cabal并尝试删除这些行：

if !os(darwin)
    Extra-Libraries: cryptopp

cryptopp外部库依赖

1 个答案: