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linux-next/scripts/kconfig/lxdialog/check-lxdialog.sh
Bjørn Forsman be8af2d54a kconfig/lxdialog: get ncurses CFLAGS with pkg-config
This makes "make menuconfig" also work on systems where ncurses is not
installed in a standard location (such as on NixOS).

This patch changes ccflags() so that it tries pkg-config first, and only
if pkg-config fails does it go back to the fallback/manual checks. This
is the same algorithm that ldflags() already uses.

Signed-off-by: Bjørn Forsman <bjorn.forsman@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-09-23 15:47:48 +02:00

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#!/bin/sh
# Check ncurses compatibility
# What library to link
ldflags()
{
pkg-config --libs ncursesw 2>/dev/null && exit
pkg-config --libs ncurses 2>/dev/null && exit
for ext in so a dll.a dylib ; do
for lib in ncursesw ncurses curses ; do
$cc -print-file-name=lib${lib}.${ext} | grep -q /
if [ $? -eq 0 ]; then
echo "-l${lib}"
exit
fi
done
done
exit 1
}
# Where is ncurses.h?
ccflags()
{
if pkg-config --cflags ncursesw 2>/dev/null; then
echo '-DCURSES_LOC="<ncurses.h>" -DNCURSES_WIDECHAR=1'
elif pkg-config --cflags ncurses 2>/dev/null; then
echo '-DCURSES_LOC="<ncurses.h>"'
elif [ -f /usr/include/ncursesw/curses.h ]; then
echo '-I/usr/include/ncursesw -DCURSES_LOC="<curses.h>"'
echo ' -DNCURSES_WIDECHAR=1'
elif [ -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="<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() {
$cc -x c - -o $tmp 2>/dev/null <<'EOF'
#include CURSES_LOC
main() {}
EOF
if [ $? != 0 ]; then
echo " *** Unable to find the ncurses libraries or the" 1>&2
echo " *** required header files." 1>&2
echo " *** 'make menuconfig' requires 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|-ccflags|-ldflags compiler options]\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