master a328bf65ef 2/2: Make frame synchronization conditional on clock_gettime

[Po Lu]

branch: master
commit a328bf65ef31d0134fc3d522f28b2da000a5e742
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Make frame synchronization conditional on clock_gettime
    
    * src/xfns.c (x_set_parent_frame)
    (x_set_use_frame_synchronization):
    * src/xterm.c (x_update_begin, show_back_buffer, x_update_end)
    (x_display_set_last_user_time, handle_one_xevent):
    * src/xterm.h (struct x_output): Define out vsync code when
    !HAVE_CLOCK_GETTIME.  (bug#57346)
---
 src/xfns.c  | 3 ++-
 src/xterm.c | 4 ++--
 src/xterm.h | 3 ++-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/xfns.c b/src/xfns.c
index 7eecda6dbd..0b1f707e9f 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -5156,7 +5156,8 @@ This function is an internal primitive--use `make-frame' 
instead.  */)
                       ((STRINGP (value)
                         && !strcmp (SSDATA (value), "extended")) ? 2 : 1));
 
-#if defined HAVE_XSYNCTRIGGERFENCE && !defined USE_GTK
+#if defined HAVE_XSYNCTRIGGERFENCE && !defined USE_GTK \
+  && defined HAVE_CLOCK_GETTIME
       x_sync_init_fences (f);
 #endif
 #endif
diff --git a/src/xterm.c b/src/xterm.c
index 8de273cb8f..26c512d80a 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -7600,7 +7600,7 @@ x_display_set_last_user_time (struct x_display_info 
*dpyinfo, Time time,
 #ifndef USE_GTK
   struct frame *focus_frame;
   Time old_time;
-#if defined HAVE_XSYNC
+#if defined HAVE_XSYNC && defined HAVE_CLOCK_GETTIME
   uint64_t monotonic_time;
 #endif
 
@@ -27024,7 +27024,7 @@ x_free_frame_resources (struct frame *f)
        XFreeCursor (FRAME_X_DISPLAY (f), 
f->output_data.x->bottom_left_corner_cursor);
 
       /* Free sync fences.  */
-#if defined HAVE_XSYNCTRIGGERFENCE && !defined USE_GTK
+#if defined HAVE_XSYNCTRIGGERFENCE && !defined USE_GTK && defined CLOCK_GETTIME
       x_sync_free_fences (f);
 #endif
     }
diff --git a/src/xterm.h b/src/xterm.h
index 75277c166e..8500ec2771 100644
--- a/src/xterm.h
+++ b/src/xterm.h
@@ -1577,7 +1577,8 @@ extern void x_make_frame_invisible (struct frame *);
 extern void x_iconify_frame (struct frame *);
 extern void x_free_frame_resources (struct frame *);
 extern void x_wm_set_size_hint (struct frame *, long, bool);
-#if defined HAVE_XSYNCTRIGGERFENCE && !defined USE_GTK
+#if defined HAVE_XSYNCTRIGGERFENCE && !defined USE_GTK \
+  && defined HAVE_CLOCK_GETTIME
 extern void x_sync_init_fences (struct frame *);
 #endif