kconfig/lxdialog/check-lxdialog.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Apr 26 21:31:05 2008 +0000 (2008-04-26)
changeset 454 372b2f397baa
child 706 607277e3cdab
permissions -rwxr-xr-x
Configure tsocks with a simple heuristic.

Consider the proxy has to be in a 'local' network. It means it is directly
reachable by the local machine, even if the local machine has to hop through
one or more gates to reach the proxy (often the case in enterprise networks
where class A 10.0.0.0/8 is in fact sub-divided into smaller networks, each
one of them in a different location, eg. 10.1.0.0/16 in a place, while
10.2.0.0/16 would be on the other side of the world). Not being in the same
subnet does not mean the proxy is not available.

So we will build a mask with at most high bits set, which defines a network
that has both the local machine and the proxy. Because a machine may have
more than one interface, build a mask for each of them, removing 127.0.0.1
which is added automagically by tsocks, and removing duplicate masks.

If all of this does not work, then it means the local machine can NOT in fact
reach the proxy, which in turn means the user mis-configured something (most
probably a typo...).

/trunk/scripts/crosstool.sh | 61 52 9 0 +++++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 52 insertions(+), 9 deletions(-)
     1 #!/bin/sh
     2 # Check ncurses compatibility
     3 
     4 # What library to link
     5 ldflags()
     6 {
     7 	$cc -print-file-name=libncursesw.so | grep -q /
     8 	if [ $? -eq 0 ]; then
     9 		echo '-lncursesw'
    10 		exit
    11 	fi
    12 	$cc -print-file-name=libncurses.so | grep -q /
    13 	if [ $? -eq 0 ]; then
    14 		echo '-lncurses'
    15 		exit
    16 	fi
    17 	$cc -print-file-name=libcurses.so | grep -q /
    18 	if [ $? -eq 0 ]; then
    19 		echo '-lcurses'
    20 		exit
    21 	fi
    22 	exit 1
    23 }
    24 
    25 # Where is ncurses.h?
    26 ccflags()
    27 {
    28 	if [ -f /usr/include/ncurses/ncurses.h ]; then
    29 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
    30 	elif [ -f /usr/include/ncurses/curses.h ]; then
    31 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
    32 	elif [ -f /usr/include/ncurses.h ]; then
    33 		echo '-DCURSES_LOC="<ncurses.h>"'
    34 	else
    35 		echo '-DCURSES_LOC="<curses.h>"'
    36 	fi
    37 }
    38 
    39 # Temp file, try to clean up after us
    40 tmp=.lxdialog.tmp
    41 trap "rm -f $tmp" 0 1 2 3 15
    42 
    43 # Check if we can link to ncurses
    44 check() {
    45 	echo "main() {}" | $cc -xc - -o $tmp 2> /dev/null
    46 	if [ $? != 0 ]; then
    47 		echo " *** Unable to find the ncurses libraries."          1>&2
    48 		echo " *** make menuconfig require the ncurses libraries"  1>&2
    49 		echo " *** "                                               1>&2
    50 		echo " *** Install ncurses (ncurses-devel) and try again"  1>&2
    51 		echo " *** "                                               1>&2
    52 		exit 1
    53 	fi
    54 }
    55 
    56 usage() {
    57 	printf "Usage: $0 [-check compiler options|-header|-library]\n"
    58 }
    59 
    60 if [ $# == 0 ]; then
    61 	usage
    62 	exit 1
    63 fi
    64 
    65 cc=""
    66 case "$1" in
    67 	"-check")
    68 		shift
    69 		cc="$@"
    70 		check
    71 		;;
    72 	"-ccflags")
    73 		ccflags
    74 		;;
    75 	"-ldflags")
    76 		shift
    77 		cc="$@"
    78 		ldflags
    79 		;;
    80 	"*")
    81 		usage
    82 		exit 1
    83 		;;
    84 esac