relocating gcc 3.2.1: inconsistent search path for header files?

relocating gcc 3.2.1: inconsistent search path for header files?

[Harald Dunkel]

Hi folks,

I have installed gcc 3.2.1 in a private directory of a pseudo user.
When I compile a program using 'g++ -v', then g++ lists the following
directories searched for header files:


#include <...> search starts here:
  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1
  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/backward
  /usr/local/include
  /u/ccmaster/Linux/stow/gcc-3.2.1/include
  /u/ccmaster/Linux/stow/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
  /usr/include
End of search list.



After relocating the gcc-3.2.1 directory to my own $HOME, 'g++ -v'
reports:

#include <...> search starts here:
  /u/dunkel/Linux/stow/gcc-3.2.1/include/c++/3.2.1
  /u/dunkel/Linux/stow/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
  /u/dunkel/Linux/stow/gcc-3.2.1/include/c++/3.2.1/backward
  /u/dunkel/Linux/stow/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1
  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/backward
  /usr/local/include
  /u/ccmaster/Linux/stow/gcc-3.2.1/include
  /u/ccmaster/Linux/stow/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
  /usr/include
End of search list.



As you can see, the directory /somepath/gcc-3.2.1/lib/gcc-lib/\
i686-pc-linux-gnu/3.2.1/include has got a higher priority than
/usr/local/include now. This is surely inconsistent. But shouldn't
/usr/local/include get a much lower priority in the first case?



Regards

Harri

Re: relocating gcc 3.2.1: inconsistent search path for header files?

[Daniel Jacobowitz]

On Mon, Dec 30, 2002 at 10:08:06AM +0100, Harald Dunkel wrote:
> Hi folks,
> 
> I have installed gcc 3.2.1 in a private directory of a pseudo user.
> When I compile a program using 'g++ -v', then g++ lists the following
> directories searched for header files:
> 
> 
> #include <...> search starts here:
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/backward
>  /usr/local/include
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include
>  /u/ccmaster/Linux/stow/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
>  /usr/include
> End of search list.
> 
> 
> 
> After relocating the gcc-3.2.1 directory to my own $HOME, 'g++ -v'
> reports:
> 
> #include <...> search starts here:
>  /u/dunkel/Linux/stow/gcc-3.2.1/include/c++/3.2.1
>  /u/dunkel/Linux/stow/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
>  /u/dunkel/Linux/stow/gcc-3.2.1/include/c++/3.2.1/backward
>  /u/dunkel/Linux/stow/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include/c++/3.2.1/backward
>  /usr/local/include
>  /u/ccmaster/Linux/stow/gcc-3.2.1/include
>  /u/ccmaster/Linux/stow/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
>  /usr/include
> End of search list.
> 
> 
> 
> As you can see, the directory /somepath/gcc-3.2.1/lib/gcc-lib/\
> i686-pc-linux-gnu/3.2.1/include has got a higher priority than
> /usr/local/include now. This is surely inconsistent. But shouldn't

This is a sort-of known problem.  I have a pending patch to fix it for
3.4; Neil, do you think it's worth fixing that part (just the order of
searching relocated directories) for 3.3?

> /usr/local/include get a much lower priority in the first case?

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

Re: relocating gcc 3.2.1: inconsistent search path for header files?

[Harald Dunkel]

Harald Dunkel wrote:
> 
> As you can see, the directory /somepath/gcc-3.2.1/lib/gcc-lib/\
> i686-pc-linux-gnu/3.2.1/include has got a higher priority than
> /usr/local/include now. This is surely inconsistent. But shouldn't
> /usr/local/include get a much lower priority in the first case?
> 

Better: Gcc should ignore /usr/local/include completely, if
the prefix was not set to /usr/local at configuration time.
My gcc (configured using --prefix=/u/ccmaster/Linux/stow/gcc-3.2.1)
seems to ignore the libs in /usr/local/lib without explicit
-L flag, so why should it search in /usr/local/include by default?


Regards

Harri

Re: relocating gcc 3.2.1: inconsistent search path for header files?

[Neil Booth]

Daniel Jacobowitz wrote:-

> > As you can see, the directory /somepath/gcc-3.2.1/lib/gcc-lib/\
> > i686-pc-linux-gnu/3.2.1/include has got a higher priority than
> > /usr/local/include now. This is surely inconsistent. But shouldn't
> 
> This is a sort-of known problem.  I have a pending patch to fix it for
> 3.4; Neil, do you think it's worth fixing that part (just the order of
> searching relocated directories) for 3.3?

Sure!  If you come up with a patch, I'll be happy to review it.

Neil.