making emerge faster

[Wolfgang Rohdewald]

caching getGCCTarget() really makes some operations
much faster. And emerge prints much less debug
messages.

I suppose it must be called again as long
as Popen fails - but when it succeeded, can
gcc change its opinion later on?

def getGCCTarget():
    # TODO: Cache this!
    try:
        result = subprocess.Popen("gcc -dumpmachine", 
stdout=subprocess.PIPE).communicate()[0]
        utils.debug("GCC Target Processor:%s" % result, 1 )
        return result.strip()
    except OSError:
        #if no mingw is installed return mingw-w32 it is part of 
base
        return "i686-w64-mingw32"

-- 
Wolfgang
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