[Emacs-diffs] master 5fac0de: Drop support for CPU profiling on Cygwin

[Ken Brown]

branch: master
commit 5fac0dee87ea5d4aa90ee93606c19785919da105
Author: Ken Brown <address@hidden>
Commit: Ken Brown <address@hidden>

    Drop support for CPU profiling on Cygwin
    
    * src/syssignal.h (PROFILER_CPU_SUPPORT): Don't define on Cygwin.
    (Bug#20843)
---
 src/syssignal.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/syssignal.h b/src/syssignal.h
index b536eb5..2882400 100644
--- a/src/syssignal.h
+++ b/src/syssignal.h
@@ -36,7 +36,9 @@ extern void unblock_tty_out_signal (sigset_t const *);
 # define HAVE_ITIMERSPEC
 #endif
 
-#if (defined SIGPROF && !defined PROFILING \
+/* On Cygwin, setitimer does not support ITIMER_PROF, so we can't
+   support CPU profiling. */
+#if (defined SIGPROF && !defined PROFILING && !defined CYGWIN \
      && (defined HAVE_SETITIMER || defined HAVE_ITIMERSPEC))
 # define PROFILER_CPU_SUPPORT
 #endif