#!/bin/sh objtype=$cputypetest -f $PF9/$objtype/config && . $PF9/$objtype/config . $PF9/linux/bin/9c_opts.sh usegcc(){	cc=gcc	ngflags=-c	if $opti; then		ngflags="-O2 $ngflags"	fi	if $warn; then		ngflags="$ngflags \			-Wall \			-Wno-parentheses \			-Wno-missing-braces \			-Wno-switch \			-Wno-comment \			-Wno-sign-compare \			-Wno-unknown-pragmas \		"	fi	ngflags="$ngflags \		-fno-omit-frame-pointer \	"	# want to put -fno-optimize-sibling-calls here but	# that option only works with gcc3+ it seems	cflags="$ngflags -ggdb"} tag="${SYSNAME:-`uname`}-${OBJTYPE:-`uname -m`}-${CC9:-cc}"case "$tag" in*BSD*)	usegcc ;;*Darwin*)	usegcc 		cflags="$ngflags -g3 -no-cpp-precomp" ;;*Linux*)	usegcc 		case "${CC9:-gcc}" in		tcc)			cc=tcc			cflags="-c -g"			;;		esac		case "${SYSVERSION:-`uname -r`}" in		2.4.*)			cflags="$cflags -D__Linux24__"			;;		2.6.*)			cflags="$cflags -D__Linux26__"			;;		esac		;;*)	echo 9c does not know how to compile on "$tag" 1>&2	exit 1esac for src in $srcs; do	if test -z "$outfile"; then		outfile=`echo $src | sed 's,[^/]*/,,g;s,[.]c$,,'`.$O	fi 	# N.B. Must use temp file to avoid pipe; pipe loses status.	# The uniq at the end is for gcc's strcmp/etc. built-in nonsense,	# which multiplies single errors as a result of its expansion.	xtmp=/tmp/9c.$$.$USER.out	$cc -o $outfile -DPLAN9PORT -DPF9 -I$PF9/$objtype/include -I$PF9/include $cflags $opts $src 2>$xtmp	status=$?	grep -v '__p9l_autolib_' $xtmp |	egrep -v ': error: .Each undeclared identifier|: error: for each function it appears|is dangerous, better use|is almost always misused|: In function |: At top level:|support .long long.|In file included from|        from|use of C99 long long|ISO C forbids conversion' |	sed 's/ .first use in this function.$//; s/\"\([^\"][^\"]*\)\", line \([0-9][0-9]*\)/\1:\2/g' |	uniq 1>&2	rm -f $xtmp $xtmp.status	exit $statusdone