source: debwrt/trunk/config/mconf/lxdialog/check-lxdialog.sh @ 1

#!/usr/bin/env bash
# Check ncurses compatibility

# What library to link
ldflags()
{
        for ext in so dylib; do
                for dir in "" /usr/local/lib /opt/local/lib; do
                        $cc ${dir:+-L$dir} -print-file-name=libncursesw.$ext | grep -q /
                        if [ $? -eq 0 ]; then
                                echo $dir '-lncursesw'
                                exit
                        fi
                        $cc ${dir:+-L$dir} -print-file-name=libncurses.$ext | grep -q /
                        if [ $? -eq 0 ]; then
                                echo $dir '-lncurses'
                                exit 
                        fi
                        $cc ${dir:+-L$dir} -print-file-name=libcurses.$ext | grep -q /
                        if [ $? -eq 0 ]; then
                                echo $dir '-lcurses'
                                exit
                        fi
                done
        done
        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 /opt/local/include/ncurses/ncurses.h ]; then
                echo '-I/opt/local/include -I/opt/local/include/ncurses -DCURSES_LOC="<ncurses/ncurses.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 [ $# -eq 0 ]; then
        usage
        exit 1
fi

cc=""
case "$1" in
        "-check")
                shift
                cc="$@"
                check
                ;;
        "-ccflags")
                ccflags
                ;;
        "-ldflags")
                shift
                cc="$@"
                ldflags
                ;;
        "*")
                usage
                exit 1
                ;;
esac