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Subject: Re: Updating GCC
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On Thu, 22 Mar 2007, White Hat wrote:

> --- Chuck Swiger <cswiger@mac.com> wrote:
>
>> On Mar 22, 2007, at 12:34 PM, White Hat wrote:
>>>> Add:
>>>>
>>>> CC?=	/usr/local/bin/gcc
>>>> CXX?=	/usr/local/bin/g++
>>>>
>>>> ...to /etc/make.conf.  You might also find
>> looking
>>>> at /usr/ports/Mk/
>>>> bsd.gcc.mk to be informative...
>>>
>>> Thanks! One other question; why the '?' mark? I
> was
>>> Googling for information on gcc, and it listed
>> 'cxx='
>>> sans a question mark in it.
>>
>> It means "set CC to this value if it's not already
>> set to something".
>>
>> Some ports already know they need a newer version of
>> gcc (using
>> "USE_GCC="), and the "make world" infrastructure to
>> rebuild the
>> kernel/userland need to use the system-provided
>> compiler, so using
>> the question mark lets things which know better use
>> the exact
>> compiler they want.
>
> Thanks! I could not find that information anywhere,
> although I am sure it does exist.

Does the make.conf manpage need to be updated? It doesn't appear to reference either USE_GCC= or CC= or CXX= at all..
-Garrett