How to compile cpp files in linux?

If we have a written demo.cpp function, how do we compile the program and run the result under the Linux system?

We can execute the command:

g++ demo.cpp -o demo

to generate an executable program demo, and then execute the command:

./demo

to execute the program.

Similarly, if it is a .c file, you can execute the command:

gcc demo.c -o demo

In addition, during compilation, if we need to add the path of the header file and library file, you can refer to The following parameters:

-l: used to specify the library to be linked to by the program. The -l parameter is followed by the library name. The relationship between the library name and the real library file name can be explained as: if the library name is caffe, its library file name is libcaffe.so.

-L: The compiler searches for library files according to the path specified by -L. Generally, you can use -l after -L to specify multiple library files at one time. For example, .a (static library) and .so (dynamic library) under Linux.

-I: The compiler searches for header files according to the path specified by -I. (xxx.h)

For example, assuming I have written a demo.cpp file and need to use caffe-related files, I can execute the command:

g++ demo.cpp -o demo -I ~/caffe/include/ -D CPU_ONLY \
-I ~/caffe/.build_debug/src/ -L ~/caffe/build/lib -lcaffe

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