Newbie question

[Takatsugu Kobayashi]

Hi,

I migrated from windows to Fedora6 linux a few months ago, and am still 
learning to make the best out of this fantastic OS....

I just installed GSL for my statistical research, but I installed it on 
a different folder than the one I wa supposed to. I should have 
installed /usr/include directory rather than /usr/local/include. So I 
should specify the path to this usr/local/inlcude/gsl everytime I run 
C/C++.

This is very simple newbie question, but how to specify the path in the 
process of ./configure, make, make install etc? I could just copy and 
paste all the files in the gsl directory in /usr/local/include to 
/usr/include by the chmod command....

I appreciate your help.

Thanks

Taka