Added 'util/genconfig' script referenced by 'make config'.

util/genconfig

@@ -0,0 +1,121 @@
+#!/bin/sh -f
+
+CONFIG="$ROOT/config.mk"
+CONFSTR='# Generated by "make config"'
+
+#XXX Ignores lines ending in \
+parseconfig() {
+	cat <<!
+	/^$CONFSTR/ {exit}
+	/^( *#|	)/ {next}
+!
+	cat <<'!'
+	/=/ {
+		gsub(/'/, "'\"'\"'")
+		sub(/[	 ]*=[	 ]*/, "='")
+		print $0"'"
+		sub(/=.*/, "")
+		print $0"_orig=\"$"$0"\""
+	}
+!
+}
+
+findinc() {
+	var="$1"; file="$2"; shift 2
+	for d in "$@"; do
+		if [ -d "$d" -a -f "$d/$file" ]; then
+			eval "$var=\"-I$d\""; break; fi
+	done
+}
+findlib() {
+	var="$1"; lib="$2"; shift 2
+	for d in "$@"; do
+		if [ -d "$d" -a -f "$d/$lib.so" -o -f "$d/lib$lib.a" ]; then
+			eval "$var=\"-L$d -l$lib\""; break; fi
+	done
+}
+
+prompt() {
+	var=$1; shift
+	eval "def=\$$var; orig=\$${var}_orig"
+
+	unset val
+	if [ -z "$def" -o -n "$force" ]; then
+		echo "$@"
+		read -p "$var[$def]= " val
+		echo
+	fi
+
+	if [ -z "$val" ]; then
+		val="$def"; fi
+	if [ "$val" != "$orig" ]; then
+		CFG="$CFG
+$var=$val"; fi
+}
+
+eval "$(awk "`parseconfig`" <"$CONFIG")"
+CFG="$(sed -n "/^$CONFSTR/q; p" "$CONFIG"; echo "$CONFSTR")"
+
+cat <<!
+Configuring for the wmii build.
+
+You'll be prompted for a number of settings which wmii needs to build,
+install, and run properly. In most cases, the defaults will be sufficient,
+in which case, you may simply press return to accept them.
+
+!
+
+# Guess...
+AWKPATH=`which awk`
+
+prompt AWKPATH "Full path to your system's 'awk' program"
+prompt PLAN9 "Path of a Plan 9 Port or 9base installation"
+
+force=1
+prompt PREFIX Installation prefix
+
+echo "Compilation details (if you don't understand these, just leave the defaults)"
+prompt CC C object compiler
+prompt LD 'Linker (this should normally not be "ld")'
+
+prompt INCPATH Search path for include files 
+prompt LIBS Libraries to be linked with every executable
+
+prompt CFLAGS Flags for the C compiler
+prompt LDFLAGS Flags for the linker
+prompt STATIC Extra linker flags to produce a static executable
+unset force
+
+# Make some guesses
+
+#for i in LIBX11 LIBICONV LIBIXP INCX11; do
+#	eval "unset $i ${i}_orig"; done
+
+libs="$LIBDIR:$(echo "$INCPATH"|sed 's,/include\(:\|$\),/lib\1,g')$(echo "$LDFLAGS"|sed 's,-L\([^ ]*\),:\1,g')"
+eval "libs=\"$libs\""
+LIBIXP=${LIBIXP%/libixp.a}
+
+oifs="$IFS"
+IFS=:
+findinc INCX11 X11/Xlib.h $INCS /usr/X11R6/include /usr/x11/include /usr/x11/include /usr/X11/include \
+	/usr/openwin/include /opt/x11/include /opt/X11/include
+findinc INCICONV iconv.h $INCS /usr/local/include
+
+findlib LIBX11 X11 $libs /usr/X11R6/lib /usr/X11/lib /usr/openwin/lib /usr/x11/lib /opt/X11 /opt/x11
+findlib LIBICONV iconv $libs
+findlib LIBIXP ixp ${ROOT}/libixp $libs
+LIBIXP=$(echo "$LIBIXP"|sed 's,^-L\([^ ]*\) -l\([^ ]*\)$,\1/lib\2,')
+IFS="$oifs"
+
+# Back to prompting
+echo Library paths...
+prompt INCX11 Compiler flags to find X11 includes
+prompt LIBX11 Linker flags to link against libX11
+prompt LIBICONV Linker flags to link agains libiconv '(may be left blank if iconv is part of your system libc)'
+prompt INCICONV Compiler flags to find iconv.h
+prompt LIBIXP Path to libixp.a
+
+echo Writing config.mk
+echo "$CFG
+" >config.mk
+echo Done.