dante,openflow,linux-atm: disable C23 support to fix configure check

Set ac_cv_prog_cc_c23=no to prevent autoconf from detecting C23
compiler support, avoiding potential build failures as the package
is not yet fully ported to support C23 standard.

Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-networking/recipes-protocols/dante/dante_1.4.4.bb

@@ -25,6 +25,8 @@ EXTRA_OECONF += "--without-gssapi --sbindir=${bindir}"
 DEPENDS += "flex-native bison-native libpam libtirpc"
 inherit autotools-brokensep features_check
 
+CACHED_CONFIGUREVARS += "ac_cv_prog_cc_c23=no"
+
 CPPFLAGS += "-P"
 CFLAGS += "-I${STAGING_INCDIR}/tirpc"
 LIBS += "-ltirpc"

meta-networking/recipes-protocols/openflow/openflow_git.bb

@@ -40,6 +40,8 @@ DEPENDS:append:libc-musl = " libexecinfo"
 
 inherit autotools-brokensep pkgconfig
 
+CACHED_CONFIGUREVARS += "ac_cv_prog_cc_c23=no"
+
 do_configure:prepend() {
     ./boot.sh
 }

meta-networking/recipes-support/linux-atm/linux-atm_2.5.2.bb

@@ -32,6 +32,8 @@ file://COPYING.LGPL;md5=6e29c688d912da12b66b73e32b03d812"
 
 inherit autotools pkgconfig
 
+CACHED_CONFIGUREVARS += "ac_cv_prog_cc_c23=no"
+
 EXTRA_OEMAKE += "ROOTPREFIX=${root_prefix}"
 
 FILES:${PN} += "${nonarch_base_libdir}/firmware"