Question

I use the following code to compile a cpp file to object file.

g++ -c main.cpp

Above code generates the .o fles in same directory where main.cpp resides.

1. Suppose I have a folder named obj and need to generate the object files there, how could I write it?
2. How can I see the compiler switches supported by g++ and it’s usages?

Any help would be great

Answer 1

Suppose I have a folder named obj and need to generate the object files there, how do I write?

Use:

g++ -c main.cpp -o obj/main.o

How can I see the compiler switches supported by g++ and it’s usages?

If you are on a *nix system use:

man g++

or use info g++