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-rw-r--r--src/syssignal.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/syssignal.h b/src/syssignal.h
index b536eb501b..28824003c5 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