Jesse Beder Jesse Beder - 8 days ago 7
Linux Question

How to add a default include path for gcc in linux?

I'd like gcc to include files from

$HOME/include
in addition to the usual include directories, but there doesn't seem to be an analogue to
$LD_LIBRARY_PATH
. I know I can just add the include directory at command line when compiling (or in the makefile), but I'd really like a universal approach here, as in the library case.

Answer

Try setting C_INCLUDE_PATH (for C header files) or CPLUS_INCLUDE_PATH (for C++ header files).

As Ciro mentioned, CPATH will set the path for both C and C++.

More details here.