configure: fixup extended colors in wide-char-enabled ncurses

As Krzysztof puts it in its commit log in the Linux kernel:

    The ncurses library allows for extended colors. The support for extended
    colors support depends on wide-character support. ncurses headers
    enable extended colors (NCURSES_EXT_COLORS) only when wide-character
    support is enabled (NCURSES_WIDECHAR).

    The "make menuconfig" uses wide-character ncursesw library, which can be
    compiled with wide-character support, but does not define NCURSES_WIDECHAR
    and it's using headers without wide-character (and extended colors) support.

    This fixes problems with colors on systems with enabled extended colors
    (like PLD Linux). Without this patch "make menuconfig" is hard to use.

In kconfig-frontends, we fix this by adding the appropriate CPPFLAGS to the
mconf-specific ncurses CPPFLAGS.

Reported-by: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

diff --git a/configure.ac b/configure.ac
index 4e02c50ee8f66d8982b405103a2040209b66a935..8b5bc5d0bd94f6d9e4b817e996cf894b1d6ae581 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -270,6 +270,9 @@ AS_IF(
             [test "$need_curses" = "yes"],
             [AC_MSG_ERROR([could not find curses headers (frontends: mconf/nconf)])],
             [has_curses=no])])
+     AS_CASE(
+        [$CURSES_LOC],
+        [ncursesw/*],[ncurses_mconf_CPPFLAGS="$ncurses_mconf_CPPFLAGS -DNCURSES_WIDECHAR=1"])
      AC_SEARCH_LIBS(
         [initscr],
         [ncursesw ncurses curses],