Source
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--- tools/ccopts.sh.orig 2016-11-28 21:51:58.000000000 -0600
+++ tools/ccopts.sh 2017-01-16 20:55:38.000000000 -0600
# worked since at least 2.7.2 although it wasn't actually documented until
# the first 3.x releases).
-GCC_VER="$(gcc -dumpversion | tr -d '.' | cut -c 1-2)"
+GCC_VER="$($CC -dumpversion | tr -d '.' | cut -c 1-2)"
# Try and determine the CPU type. This is made more complex by a pile of
# *BSE's which, along with antideluvian tools like an as that doesn't