所以我试图MEX从libeemd库（https://bitbucket.org/luukko/libeemd）编译一个.c文件，但是当我给它一个时，会出现以下错误
Building with 'Xcode with Clang'.
Error using mex
In file included from /Users/neergaard/Dropbox/Studie/Master/Matlab/library/resources/libeemd/src/eemd.c:19:
In file included from /Users/neergaard/Dropbox/Studie/Master/Matlab/library/resources/libeemd/src/eemd.h:38:
/opt/local/include/gsl/gsl_rng.h:23:10: fatal error: 'gsl/gsl_types.h' file not found
#include <gsl/gsl_types.h>
^
1 error generated.
我很确定我安装了gsl库，但是如何确保头文件指向正确的位置？
我没有这方面的经验，所以任何帮助都会非常感激！。