bpo-32493: Fix uuid.uuid1() on FreeBSD. (GH-7099)

Use uuid_enc_be() if available to encode UUID to bytes as big endian.
(cherry picked from commit 17d8830312d82e7de42ab89739b0771f712645ff)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/configure b/configure
index f1f01df4a8..b1cd944ac5 100755
--- a/configure
+++ b/configure
@@ -9625,6 +9625,40 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+# Little-endian FreeBSD, OpenBSD and NetBSD needs encoding into an octet
+# stream in big-endian byte-order
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_enc_be" >&5
+$as_echo_n "checking for uuid_enc_be... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <uuid.h>
+int
+main ()
+{
+
+#ifndef uuid_enc_be
+uuid_t uuid;
+unsigned char buf[sizeof(uuid)];
+uuid_enc_be(buf, &uuid);
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_UUID_ENC_BE 1" >>confdefs.h
+
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 # 'Real Time' functions on Solaris
 # posix4 on Solaris 2.6
 # pthread (first!) on Linux