Found the culprit!!!!!!!

XCodeVersion=`xcodebuild -version | grep Xcode | sed "s/Xcode //"`

This line in configure doesn't work on a system that just the Xcode command line tools installed! It also won't work on an OS X system that has some other tool chain (say, via brew) installed. On such systems, itsets XCodeVersion to "", which in tur

The follow on code sets XCodeVersion1 and XCodeVersion2 to "0", and then this code runs, causing the problem:

SplitObjsBroken=NO
if test "$TargetOS_CPP" = "darwin"
then

# Split objects is broken (#4013) with XCode < 3.2
if test "$XCodeVersion1" -lt 3

then
SplitObjsBroken=YES
else

if test "$XCodeVersion1" -eq 3
then
if test "$XCodeVersion2" -lt 2

then
SplitObjsBroken=YES
fi

fi
fi
fi

Alas, it doesn't look like SplitObjsBroken has the logic to allow it to be overriden on the ./configure invocation (anyone know for sure? my autoconf is very rusty....)

Too late here for me to think of a fix....

- Mark