On Sat, Mar 17, 2018 at 12:08:32PM -0400, Jeff King wrote:

+case "$($CC --version 2>&1)" in
+gcc*)
+	print_flags gcc
+	;;
+clang*)
+	print_flags clang
+	;;
+*)
+	: unknown compiler family
+	;;
+esac

By the way, one annoying thing is that running "cc --version" when "cc"
is actually "gcc" will print something like:

  cc (Debian 7.3.0-11) 7.3.0

even though it supports all of the gcc knobs.  This means that:

  make DEVELOPER=1

without further config won't get these knobs, because we (rightly)
default CC=cc.

Probably this detection could be a bit more clever, like:

  cc*Free Software Foundation")
	print_flags gcc

or something. I don't have any non-gcc/clang compilers to test with, so
I'm not sure what they even print for "--version" (if anything).

-Peff