g++ -print-prefix or -print-install-prefix

[Mark Mitchell]

Benjamin Kosnik wrote:
> For testing outside of the build directory, it would be convenient to
> have $SUBJECT. 
> 
> This could be used in conjunction with -dumpversion to create
> on-the-fly include and library directory paths for C++ includes in a
> sane manner, much like the following:

Why do you need this?  For installed-compiler testing, the compiler 
already searches the obvious places.  (I'm not trying to be cute: I'm 
genuinely curious.)

I agree that it would be nice if -print-search-dirs listed include 
directories.  It already lists the paths searched for programs and 
libraries, so that seems like a logical place to add header directories.

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713