source codes from different directories
 

Hello,

I try to combine the source code of two big c projects (with hundreds of files each). The c files have to remain in their directories. But how to invoke c code from other directories, is there a simple way to define that (at a certain point) the functions are to find in a completly different directory?

Typically the way you do this is by having include directories with the apporiate includes and adding them to the compile command (-I/blah/include) and when you need to link to object files together simply add the .o files to the compile command as well.

ooh, right! That might help :) I forgot about that, thanks!

is it really possible to link a .c file with an .o file, like:

anyone?

Absolutely.... in my large projects I have an individual directory for serveral different components. There makefile's compile them with -c and generate .o files. I then link them all together with the main executable using exactly that syntax you described.