Di Miao Di Miao - 1 year ago 147
C++ Question

How to implement a github C++ library?

I am trying to use G+smo library from github. I download, unzip it and make. Then I could run all examples in the package. But there is no tutorial that guide me to build my own cpp file. For example I tried to build the simplest code from the tutorial:

# include <gismo.h>
using namespace gismo;
int main(int argc, char* argv[])
gsInfo << "Hello G+Smo.\n";
real_t a = 2.0; // a real number, ie. double
index_t b = 3; // an integer, ie. int
GISMO_ASSERT( a*b == 6, "This is an error, 2*3 should be 6.");
return 0;

And linked the lib file by -lgismo, but it says 'gismo.h: No such file or directory
compilation terminated'. I know it my be the fact that I am not familiar with c++. Can you guys give me some suggestion about it? Or, if it is overly obvious, can you just suggest me some book to read?

Thank you.

Answer Source

The error 'gismo.h: No such file or directory compilation terminated.' suggests that you didn't set the path where the compiler should look for the library headers. Try adding -I/path/to/gismo/headers to the compiler flags, e.g. on my system make install by default installed it to /usr/local/include/gismo so I have to add -I/usr/local/include/gismo.

By the way, there is a "tutorial": The README.txt in the deploy folder.

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