git / git

Cannot retrieve contributors at this time

executable file 53 lines (46 sloc) 1016 Bytes

	#!/bin/sh
	#
	# Probe the compiler for vintage, version, etc. This is used for setting
	# optional make knobs under the DEVELOPER knob.

	CC="$*"

	# we get something like (this is at least true for gcc and clang)
	#
	# FreeBSD clang version 3.4.1 (tags/RELEASE...)
	get_version_line() {
	$CC -v 2>&1 \| grep ' version '
	}

	get_family() {
	get_version_line \| sed 's/^\(.\) version [0-9][^ ] .*/\1/'
	}

	get_version() {
	get_version_line \| sed 's/^.* version \([0-9][^ ]\) ./\1/'
	}

	print_flags() {
	family=$1
	version=$(get_version \| cut -f 1 -d .)

	# Print a feature flag not only for the current version, but also
	# for any prior versions we encompass. This avoids needing to do
	# numeric comparisons in make, which are awkward.
	while test "$version" -gt 0
	do
	echo $family$version
	version=$((version - 1))
	done
	}

	case "$(get_family)" in
	gcc)
	print_flags gcc
	;;
	clang)
	print_flags clang
	;;
	"FreeBSD clang")
	print_flags clang
	;;
	"Apple LLVM")
	print_flags clang
	;;
	*)
	: unknown compiler family
	;;
	esac