[clug] discovering gcc "<xxx.h>" (system) include directories

[Scott Ferguson]

On 23/11/12 16:10, steve jenkin wrote:
> I've been using a Macports gcc for i386-elf to cross-compile Linux kernel.
> Note: this is a non-standard gcc with very non-standard paths (in
> /opt/local) compiled in. [and incorrectly]
> 
> I'm at a loss as to how to find what include directories are compiled
> into a version of 'gcc'.
> 
> I've used Makefile settings to over-ride whatever defaults it uses, but
> I'm left underwhelmed...
> 
> Anyone fought this dragon and know how to discover the magic?
> 


echo | gcc -v -x c -E -


If man / is TL, try
http://gcc.gnu.org/onlinedocs/gcc-4.4.3/gcc/Environment-Variables.html#Environment-Variables
 ;-p



Kind regards