本文介绍了C ++ compile - GSL on x86_64的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试编译以下代码：
I am trying to compile the following code: http://www-personal.umich.edu/~mejn/dcbm/KLOptimization.cpp
但我从g ++得到以下错误消息：
But I get the following error message from g++:
> Undefined symbols for architecture x86_64: "_gsl_rng_uniform_int",
> referenced from:
> Initialize() in ccDEqovL.o
> _main in ccDEqovL.o "_gsl_rng_default_seed", referenced from:
> _main in ccDEqovL.o "_gsl_rng_default", referenced from:
> _main in ccDEqovL.o "_gsl_rng_alloc", referenced from:
> _main in ccDEqovL.o "_gsl_rng_name", referenced from:
> _main in ccDEqovL.o "_gsl_rng_get", referenced from:
> _main in ccDEqovL.o "_gsl_rng_uniform", referenced from:
> _main in ccDEqovL.o "ComputeVI()", referenced from:
> _main in ccDEqovL.o "ComputeNMI()", referenced from:
> _main in ccDEqovL.o "_gsl_rng_free", referenced from:
> _main in ccDEqovL.o ld: symbol(s) not found for architecture x86_64
我有MacBook Air，运行iOS 10.7.3。 g ++ is i686-apple-darwin11-llvm-g ++ - 4.2。
I have MacBook Air, running iOS 10.7.3. g++ is i686-apple-darwin11-llvm-g++-4.2.
我使用brew install gsl安装了GSL，它提供了以下输出：
I installed GSL using "brew install gsl", which gave the following output:
==> Downloading http://ftpmirror.gnu.org/gsl/gsl-1.15.tar.gz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/gsl/1.15
==> make
==> make install
Warning: m4 macros were installed to "share/aclocal".
Homebrew does not append "/usr/local/share/aclocal"
to "/usr/share/aclocal/dirlist". If an autoconf script you use
requires these m4 macros, you'll need to add this path manually.
==> Summary
/usr/local/Cellar/gsl/1.15: 237 files, 7.0M, built in 81 seconds
推荐答案
您似乎忘了链接GSL库。只需添加 -lgsl ，它应该工作（假设gsl在你的库路径）。
It seems you forgot to link the GSL library. Just add the -lgsl and it should work (assuming gsl is in your library path).
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