python - 安装 Distance python 库时 Clang 链接器问题

Question

我正在尝试安装Distance在我的 mac (OS X Yosemite) 上运行 python。

下载软件包并解压后，我运行(如其页面上所述):

python setup.py install --with-c

由此我收到以下错误消息:

running build_ext
building 'distance.cdistance' extension
gcc -fno-strict-aliasing -I/Users/me/anaconda/envs/name/include -   arch x86_64 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/me/anaconda/envs/name/include/python2.7 -c cdistance/distance.c -o build/temp.macosx-10.5-x86_64-2.7/cdistance/distance.o
gcc -bundle -undefined dynamic_lookup -L/Users/me/anaconda/envs/name/lib -arch x86_64 -arch x86_64 build/temp.macosx-10.5-x86_64-2.7/cdistance/distance.o -L/Users/me/anaconda/envs/name/lib -o build/lib.macosx-10.5-x86_64-2.7/distance/cdistance.so
ld: library not found for -lgcc_s.10.5
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'gcc' failed with exit status 1

据我从this one等几篇文章中了解到的或this previously asked question ，貌似通过命令gcc调用的clang找不到libgcc库。

我运行了find/usr/-name libgcc*，如果我得到的是:

/usr//lib/libgcc_s.1.dylib
/usr//lib/libgcc_s.10.4.tbd
/usr//lib/libgcc_s.10.5.tbd
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/gcc/x86_64-apple-darwin14.4.0/5.2.0/i386/libgcc.a
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/gcc/x86_64-apple-darwin14.4.0/5.2.0/i386/libgcc_eh.a
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/gcc/x86_64-apple-darwin14.4.0/5.2.0/libgcc.a
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/gcc/x86_64-apple-darwin14.4.0/5.2.0/libgcc_eh.a
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/libgcc_ext.10.4.dylib
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/libgcc_ext.10.5.dylib
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/libgcc_s.1.dylib
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/libgcc_s_ppc64.1.dylib
/usr//local/Cellar/gcc/5.2.0/lib/gcc/5/libgcc_s_x86_64.1.dylib
/usr//local/gfortran/lib/gcc/x86_64-apple-darwin14/5.1.0/i386/libgcc.a
/usr//local/gfortran/lib/gcc/x86_64-apple-darwin14/5.1.0/i386/libgcc_eh.a
/usr//local/gfortran/lib/gcc/x86_64-apple-darwin14/5.1.0/libgcc.a
/usr//local/gfortran/lib/gcc/x86_64-apple-darwin14/5.1.0/libgcc_eh.a
/usr//local/gfortran/lib/libgcc_ext.10.4.dylib
/usr//local/gfortran/lib/libgcc_ext.10.5.dylib
/usr//local/gfortran/lib/libgcc_s.1.dylib
/usr//local/gfortran/lib/libgcc_s_ppc64.1.dylib
/usr//local/gfortran/lib/libgcc_s_x86_64.1.dylib

现在我陷入了困境，因为我不知道下一步该做什么。基本上问题是:如何让 clang 知道图书馆在哪里？

Answer 1

感谢this link，我解决了这个问题这表明这是 Xcode6 最近出现的问题。

您只需将 Xcode 升级到 Xcode7 并将其设置为默认工具包链即可。简单。