ncurses: fix crosscompile target ncurses.h

NCURSES_ENABLE_STDBOOL_H was not being set correctly

packages/devel/ncurses/package.mk

@@ -59,7 +59,8 @@ PKG_CONFIGURE_OPTS_TARGET="--without-ada \
                            --disable-home-terminfo \
                            --disable-assertions \
                            --enable-leaks \
-                           --enable-sigwinch"
+                           --enable-sigwinch \
+                           --cache-file=config.cache"
 
 PKG_CONFIGURE_OPTS_HOST="--enable-termcap \
                          --with-termlib \
@@ -67,6 +68,13 @@ PKG_CONFIGURE_OPTS_HOST="--enable-termcap \
                          --enable-pc-files \
                          --without-manpages"
 
+pre_configure_target() {
+  cat >config.cache <<EOF
+cf_cv_builtin_bool=1
+cf_cv_header_stdbool_h=1
+EOF
+}
+
 post_makeinstall_target() {
   local f
   cp misc/ncurses-config ${TOOLCHAIN}/bin