How to add header files path relative to the current file?

问题

I have the file mx_minimum_power.cpp in the following directory

D:\thesis library.Data\ALOS-PALSAR 12x2\San Francisco L 12x2  

and 14 header files that I want to include to the cpp file in the following directory:

D:\thesis library.Data\ALOS-PALSAR 12x2\San Francisco L 12x2\Eigen\Eigenvalues  

so the relative path to these .h files with respect to my .cpp file is \Eigen\Eigenvalues
How should I include all those header files relative path.
I've done so far:

#include <math.h>
#include <complex>
#include <iostream>
#include "mex.h"
#include "matrix.h"
#include "\Eigen\Eigenvalues"

using std::complex;
using std::cout;
using std::endl;
using namespace Eigen;

/* The gateway function */
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
    double *arraysizePtr = NULL;
    arraysizePtr = mxGetPr(prhs[9]);
    const int arraysize = (int)*arraysizePtr;
    const int matrixDimention = 3;
}

but when I run the following command in matlab in order to build the .mexw64 file:

mex -g mx_minimum_power.cpp  

I get the error:

Building with 'Microsoft Visual C++ 2013 Professional'.  
Error using mex
mx_minimum_power.cpp
D:\thesis library.Data\ALOS-PALSAR 12x2\San Francisco L 12x2\mx_minimum_power.cpp(6) : fatal
error C1083: Cannot open include file: '\Eigen\Eigenvalues': No such file or directory

回答1:

#include "Eigen/Eigenvalues/first.of.14.h"
...

Then let the compiler know to look in "." as a base path for includes, assuming you run the compiler from the source directory. In gcc/g++ one uses "-I.". I couldn't find the equivalent on MSDN, but there is one. I used it years ago.

That literally answers your question, but I would tell the compiler to look in "Eigen\Eigenvalues" and then just use the 14 names as above without the two levels of directories.

来源：https://stackoverflow.com/questions/41430558/how-to-add-header-files-path-relative-to-the-current-file