buildroot/support/kconfig/patches/22-kconfig-lxdialog-fix-check-with-GCC14.patch

From 3ae91337b53fa3ccf0bad7f181fcaf483fab22ee Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@gmail.com>
Date: Wed, 3 Apr 2024 14:18:07 +0200
Subject: [PATCH] kconfig/lxdialog: fix check() with GCC14
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

GCC14 now treats implicit int types as error so when check() from
check-lxdialog.sh is called to check whether we can link against ncurses
it will fail silently and the help text indicating to install ncurses is
printed.

However, this is not due to missing ncurses but once the stderr redirect
to /dev/null is removed we can see the root cause:
<stdin>:2:1: error: return type defaults to ‘int’ [-Wimplicit-int]

So, in order for menuconfig to work with GCC14 lets just specify the
return type of main() as int.

Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>
Tested-by: Petr Vorel <petr.vorel@gmail.com>
---
 kconfig/lxdialog/check-lxdialog.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kconfig/lxdialog/check-lxdialog.sh b/kconfig/lxdialog/check-lxdialog.sh
index 16cd9a3186..27d6c30a57 100755
--- a/kconfig/lxdialog/check-lxdialog.sh
+++ b/kconfig/lxdialog/check-lxdialog.sh
@@ -48,7 +48,7 @@ trap "rm -f $tmp" 0 1 2 3 15
 check() {
         $cc -x c - -o $tmp 2>/dev/null <<'EOF'
 #include CURSES_LOC
-main() {}
+int main() {}
 EOF
 	if [ $? != 0 ]; then
 	    echo " *** Unable to find the ncurses libraries or the"       1>&2
-- 
2.44.0