Re: Adding additional system paths to a custom GCC

[Tim Schumacher <schumact@gmail.com>]

On 11/15/2012 10:36 PM, Ian Lance Taylor wrote:
> On Thu, Nov 15, 2012 at 8:14 PM, Tim Schumacher <schumact@gmail.com> wrote:
>> I am using Fedora linux.  I would like to build a gcc-4.7.2 with additional
>> "system paths".  Meaning, I have an installation of the Boost C++ libraries
>> installed at /usr/local/boost-1.52.0 and I would like to build a gcc that
>> treats the boost include and lib dirs as system paths so that I don't have
>> to specify -I and -L on all command lines compiling programs that use boost.
>> I'm guessing there is some easy way to do this at configure time for GCC?  I
>> guess one way would be to re-build the boost libraries with the new compiler
>> and specify the same --prefix that I used for the GCC tools.  Any thoughts
>> on this would be greatly appreciated!
> You could use a shell script to pass the options you want.  You could
> set the environment variables CPLUS_INCLUDE_PATH and LIBRARY_PATH when
> running the compiler.  I don't think there is any simple way to add
> directories when building GCC itself, though.
>
> Ian
>   

OK,  I can write a wrapper script that does what I want.

I also had this pretty crazy idea.  Would the following work?

I build boost with the new gcc I just built, and the same --prefix I 
used for the gcc.  Now all the includes and libraries (only static in my 
case) are placed where gcc can find them.  Next ... drum roll ... I 
unpack all the static boost libraries and also the lidstdc++.a file and 
re-archive all the resulting .o files back into libstdc++.a.  Now all 
the boost objects are magically available whenever I compile any c++ 
program.

Is that crazy enough to work?

Thanks again!
Tim