linux/scripts/kconfig/lxdialog/check-lxdialog.sh
Yann E. MORIN cdf0c2cfd7 kconfig/lxdialog: rationalise the include paths where to find {.n}curses{,w}.h
The current code does this:

    if [ -f /usr/include/ncursesw/curses.h ]; then
        echo '-I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>"'
    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="<ncurses/curses.h>"'
    [...]

This is merely inconsistent:
  - adding the full path to the directory in the -I directive,
  - especially since that path is already a sub-path of the system
    include path,
  - and then repeating the sub-path in the #include directive.

Rationalise each include directive:
  - only use the filename in the #include directive,
  - keep the -I directives: they are always searched for before the
    system include path; this ensures the correct header is used.

Using the -I directives and the filename-only in #include is more in
line with how pkg-config behaves, eg.:
    $ pkg-config --cflags ncursesw
    -I/usr/include/ncursesw

This paves the way for using pkg-config for CFLAGS, too, now we use it
to find the libraries.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-04-16 22:00:32 +02:00

88 lines
1.8 KiB
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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 [ -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