[PATCH] ncurses: Always pass -D_GNU_SOURCE

[Khem Raj <raj.khem@gmail.com>]

So far it was assumed that it was detected ok for target recipe but
actually it ends up with warnings and build moves on, however with
gcc-14 these warnings are treated as errors and we see the problem even
with target recipes.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-core/ncurses/ncurses.inc | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/meta/recipes-core/ncurses/ncurses.inc b/meta/recipes-core/ncurses/ncurses.inc
index 367f3b19f48..761b6a3d312 100644
--- a/meta/recipes-core/ncurses/ncurses.inc
+++ b/meta/recipes-core/ncurses/ncurses.inc
@@ -27,10 +27,8 @@ EXTRASITECONFIG = "CFLAGS='${CFLAGS} -I${SYSROOT_DESTDIR}${includedir}'"
 # TODO: remove this variable when widec is supported in every setup?
 ENABLE_WIDEC ?= "true"
 
-# _GNU_SOURCE is required for widec stuff and is detected automatically
-# for target objects.  But it must be set manually for native and sdk
-# builds.
-BUILD_CPPFLAGS += "-D_GNU_SOURCE"
+# _GNU_SOURCE is required for widec stuff and is not detected automatically
+CPPFLAGS += "-D_GNU_SOURCE"
 
 # natives don't generally look in base_libdir
 base_libdir:class-native = "${libdir}"
-- 
2.43.2