build system overhaul

scripts/kconfig/lxdialog/check-lxdialog.sh

@@ -0,0 +1,84 @@
+#!/bin/sh
+# Check ncurses compatibility
+
+# What library to link
+ldflags()
+{
+	$cc -print-file-name=libncursesw.so | grep -q /
+	if [ $? -eq 0 ]; then
+		echo '-lncursesw'
+		exit
+	fi
+	$cc -print-file-name=libncurses.so | grep -q /
+	if [ $? -eq 0 ]; then
+		echo '-lncurses'
+		exit
+	fi
+	$cc -print-file-name=libcurses.so | grep -q /
+	if [ $? -eq 0 ]; then
+		echo '-lcurses'
+		exit
+	fi
+	exit 1
+}
+
+# Where is ncurses.h?
+ccflags()
+{
+	if [ -f /usr/include/ncurses/ncurses.h ]; then
+		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
+	elif [ -f /usr/include/ncurses/curses.h ]; then
+		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
+	elif [ -f /usr/include/ncurses.h ]; then
+		echo '-DCURSES_LOC="<ncurses.h>"'
+	else
+		echo '-DCURSES_LOC="<curses.h>"'
+	fi
+}
+
+# Temp file, try to clean up after us
+tmp=.lxdialog.tmp
+trap "rm -f $tmp" 0 1 2 3 15
+
+# Check if we can link to ncurses
+check() {
+	echo "main() {}" | $cc -xc - -o $tmp 2> /dev/null
+	if [ $? != 0 ]; then
+		echo " *** Unable to find the ncurses libraries."          1>&2
+		echo " *** make menuconfig require the ncurses libraries"  1>&2
+		echo " *** "                                               1>&2
+		echo " *** Install ncurses (ncurses-devel) and try again"  1>&2
+		echo " *** "                                               1>&2
+		exit 1
+	fi
+}
+
+usage() {
+	printf "Usage: $0 [-check compiler options|-header|-library]\n"
+}
+
+if [ $# == 0 ]; then
+	usage
+	exit 1
+fi
+
+cc=""
+case "$1" in
+	"-check")
+		shift
+		cc="$@"
+		check
+		;;
+	"-ccflags")
+		ccflags
+		;;
+	"-ldflags")
+		shift
+		cc="$@"
+		ldflags
+		;;
+	"*")
+		usage
+		exit 1
+		;;
+esac