Problem
I’d like gcc to include files from $HOME/include in addition to the regular include directories, but $LD LIBRARY PATH doesn’t appear to have an equivalent.
I know I can just add the include directory to the command line when compiling (or in the makefile), but I’d prefer a more universal solution, similar to how the library ca
Asked by Jesse Beder
Solution #1
Set C INCLUDE PATH if you’re using C header files, or CPLUS INCLUDE PATH if you’re using C++ header files.
CPATH will set the path for both C and C++, as Ciro indicated (and any other language).
More information can be found in the GCC documentation.
Answered by jcrossley3
Solution #2
Make a gcc alias using your chosen included.
alias mygcc='gcc -I /whatever/'
Answered by dirkgently
Solution #3
Just to clarify, CPLUS INCLUDE PATH and C INCLUDE PATH are not the same as LD LIBRARY PATH; LD LIBRARY PATH serves the ld (the dynamic linker at runtime), whereas LIBRARY PATH serves your C/C++ compiler with library location information.
Answered by Dagim Sisay
Solution #4
A gcc spec file can do the job, but it will affect all users on the machine.
HOW TO USE THE GCC SPECIFICATIONS FILE
Answered by dimba
Post is based on https://stackoverflow.com/questions/558803/how-to-add-a-default-include-path-for-gcc-in-linux