ports/178557: Ports with USE_GCC=any don't respect local CC and CXX settings

[Mikhail T.]

>Number:         178557
>Category:       ports
>Synopsis:       Ports with USE_GCC=any don't respect local CC and CXX settings
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon May 13 04:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Mikhail T.
>Release:        FreeBSD 9.1-PRERELEASE amd64
>Organization:
Virtual Estates, Inc.	http://sybpipe.com/
>Environment:
System: FreeBSD narawntapu 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #6 r244476: Wed Dec 19 23:40:59 EST 2012 root at narawntapu:/usr/obj/cache/src/sys/POWEREDGE2900 amd64

>Description:
	Even though I set CC and CXX in make.conf to gcc48 and g++48
	respectively, ports such as audio/nas or graphics/devil, which
	specify USE_GCC=any, attempt to build using the regular gcc
	instead.

	Depending on one's configuration -- such as when things the port
	in question depends on was built with g++47 or 48 -- the build
	may fail.

>How-To-Repeat:
	1. Set CC and CXX to a newer GNU compiler in /etc/make.conf
	2. make -C /usr/ports/audio/nas -V CC

>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: