kconfig/lxdialog/check-lxdialog.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Mar 29 00:15:32 2010 +0200 (2010-03-29)
changeset 1864 758d5137fe87
parent 1087 5be36a4b304d
child 1973 20f02d426e15
permissions -rw-r--r--
scripts/populate: optimise search loop

Curently, populate will iterate over all ELF (shared objects|executables)
to look for missing NEEDED DSOs, adding to the list at every iterations
of the search loop.

Instead of looking again at previously handled ELF files, recursively
resolve every ELf files.

Also, in case there are a whole lot of files (more than the shell can
accept as arguments list, or creating a command line longer than the
shell can cope with), use a temporary file with the list of files
to search for missing dependencies.
     1 #!/bin/sh
     2 # Check ncurses compatibility
     3 
     4 # What library to link
     5 ldflags()
     6 {
     7 	for ext in so a dylib ; do
     8 		for lib in ncursesw ncurses curses ; do
     9 			$cc -print-file-name=lib${lib}.${ext} | grep -q /
    10 			if [ $? -eq 0 ]; then
    11 				echo "-l${lib}"
    12 				exit
    13 			fi
    14 		done
    15 	done
    16 	exit 1
    17 }
    18 
    19 # Where is ncurses.h?
    20 ccflags()
    21 {
    22 	if [ -f /usr/include/ncurses/ncurses.h ]; then
    23 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
    24 	elif [ -f /usr/include/ncurses/curses.h ]; then
    25 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
    26 	elif [ -f /usr/include/ncurses.h ]; then
    27 		echo '-DCURSES_LOC="<ncurses.h>"'
    28 	else
    29 		echo '-DCURSES_LOC="<curses.h>"'
    30 	fi
    31 }
    32 
    33 # Temp file, try to clean up after us
    34 tmp=.lxdialog.tmp
    35 trap "rm -f $tmp" 0 1 2 3 15
    36 
    37 # Check if we can link to ncurses
    38 check() {
    39         $cc -xc - -o $tmp 2>/dev/null <<'EOF'
    40 #include CURSES_LOC
    41 main() {}
    42 EOF
    43 	if [ $? != 0 ]; then
    44 	    echo " *** Unable to find the ncurses libraries or the"       1>&2
    45 	    echo " *** required header files."                            1>&2
    46 	    echo " *** 'make menuconfig' requires the ncurses libraries." 1>&2
    47 	    echo " *** "                                                  1>&2
    48 	    echo " *** Install ncurses (ncurses-devel) and try again."    1>&2
    49 	    echo " *** "                                                  1>&2
    50 	    exit 1
    51 	fi
    52 }
    53 
    54 usage() {
    55 	printf "Usage: $0 [-check compiler options|-ccflags|-ldflags compiler options]\n"
    56 }
    57 
    58 if [ $# -eq 0 ]; then
    59 	usage
    60 	exit 1
    61 fi
    62 
    63 cc=""
    64 case "$1" in
    65 	"-check")
    66 		shift
    67 		cc="$@"
    68 		check
    69 		;;
    70 	"-ccflags")
    71 		ccflags
    72 		;;
    73 	"-ldflags")
    74 		shift
    75 		cc="$@"
    76 		ldflags
    77 		;;
    78 	"*")
    79 		usage
    80 		exit 1
    81 		;;
    82 esac