port install gnat-gcc

[Boey Maun Suang]

Hi Daniel,

On 19/06/2009, at 8:29 AM, Daniel J. Luke wrote:

> If the reason why it needs to be the same path everywhere is because  
> of the install name for the shared libraries that come with the  
> bootstrap compiler, then the DYLD_* variables can be used to make it  
> a non-issue.


Ah, I'd forgotten that DYLD_LIBRARY_PATH is checked before the install  
path name, but unfortunately that's not the only reason why the prefix  
matters, and I'm not confident that the other reason that I have found  
is the only one.  (The other place in which I've found it is libexec/ 
gcc/i386-apple-darwin9.6.0/4.3.3/install-tools/mkheaders, which is a  
shell script, and it looks like patching it or setting an environment  
variable should take care of the prefix there.)

If someone can confirm that those are the only ways in which the  
prefix matters in GCC, then I'd be confident that using  
DYLD_LIBRARY_PATH and patching/setting a variable for mkheaders would  
be fine, and thus that we could put the bootstrap in ${destroot}.   
Until then, though, I'm inclined to stick with putting it in /var/tmp.

Kind regards,


Maun Suang

-- 
Boey Maun Suang
Email: boeyms at macports dot org