ntp: Use time_t for the stime() argument

ntp_set_tod() passes a long to stime(), which fails to build on 32-bit
targets with a 64-bit time_t, e.g. riscv32 with clang:

  libntp/machines.c:483:14: error: incompatible pointer types passing
  'long *' to parameter of type 'const time_t *'

Add a patch to use time_t unless the system declares stime() with a
long (DECL_STIME_1), so the argument matches the prototype in use on
every architecture.

AI-Generated: Uses Claude Code
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-networking/recipes-support/ntp/ntp/0001-libntp-Use-time_t-for-the-stime-argument.patch

@@ -0,0 +1,42 @@
+From: Khem Raj <khem.raj@oss.qualcomm.com>
+Date: Tue, 20 Oct 2026 21:30:00 -0700
+Subject: [PATCH] libntp: Use time_t for the stime() argument
+
+ntp_set_tod() passes a long to stime(), which is declared as
+stime(const time_t *) everywhere except on systems where configure sets
+DECL_STIME_1 (stime(long *)). That only works when time_t and long have
+the same size. 32-bit targets with a 64-bit time_t, such as riscv32 or
+any 32-bit target built with _TIME_BITS=64, break:
+
+  libntp/machines.c:483:14: error: incompatible pointer types passing
+  'long *' to parameter of type 'const time_t *' (aka 'const long long *')
+
+Use time_t unless the system declares stime() with a long, so the
+argument always matches the prototype in use.
+
+Upstream-Status: Submitted [https://github.com/ntp-project/ntp/pull/35]
+Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
+---
+ libntp/machines.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/libntp/machines.c
++++ b/libntp/machines.c
+@@ -477,7 +477,17 @@
+ #endif /* HAVE_SETTIMEOFDAY */
+ #ifdef HAVE_STIME
+ 	if (rc && (SET_TOD_STIME == tod || !tod)) {
++		/*
++		 * stime() takes a time_t pointer except on systems
++		 * that declare it with a long (DECL_STIME_1).  time_t
++		 * may be wider than long, e.g. on 32-bit targets with
++		 * 64-bit time_t, so match the prototype in use.
++		 */
++#ifdef DECL_STIME_1
+ 		long tp = tvp->tv_sec;
++#else
++		time_t tp = tvp->tv_sec;
++#endif
+ 
+ 		errno = 0;
+ 		rc = stime(&tp); /* lie as bad as SysVR4 */

meta-networking/recipes-support/ntp/ntp_4.2.8p18.bb

@@ -21,6 +21,7 @@ SRC_URI = "http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-${PV}.tar.g
            file://0001-colcomp-sntp-libpkgver-colcomp.c-Convert-K-R-functio.patch \
            file://0001-Makefile.am-Don-t-build-deprecated-ntpdate.patch \
            file://0001-ntp_crypto-use-the-ASN1_STRING-accessors.patch \
+           file://0001-libntp-Use-time_t-for-the-stime-argument.patch \
            file://ntpd \
            file://ntp.conf \
            file://ntpd.service \