How to link a non-standard header file into a C compiler -


i'm trying use non-standard header file (http://ndevilla.free.fr/gnuplot). used in lots of codes in various different places on computer. have put header file , object file in every folder needed preprocessor directive:

#include "gnuplot_i.h"

in file. there way can put header file in 1 place can reference other standard header file. cheers.

compile -i<directory>

e.g.

compile -i/usr/local/gnuplot/inc.

also might worth reading on include paths , difference between:

#include <include_file.h>

and

#include "include_file.h"

linking in object file needs done explicitly same way c file, means (i believe) need full path. if archive proper library can use -l<library name> , -l<library path> instead. e.g.

gcc -i/usr/local/gnuplot/inc -l/usr/local/gnuplot/lib -lgnuplot -o my_prog my_prog.c

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