--- ceph-15.2.9/src/include/config-h.in.cmake.orig	2021-02-26 13:32:11.218444320 -0500

+++ ceph-15.2.9/src/include/config-h.in.cmake	2021-02-26 15:00:31.976950884 -0500

@@ -1,7 +1,6 @@

 /* config.h file expanded by Cmake for build */

-#ifndef CONFIG_H

-#define CONFIG_H

+#pragma once

 /* fallocate(2) is supported */

 #cmakedefine CEPH_HAVE_FALLOCATE

@@ -354,4 +353,3 @@

 /* Define if RWL is enabled */

 #cmakedefine WITH_RBD_RWL

-#endif /* CONFIG_H */

--- ceph-15.2.9/src/global/signal_handler.h.orig	2021-02-26 15:34:39.500250672 -0500

+++ ceph-15.2.9/src/global/signal_handler.h	2021-02-26 15:35:39.514842687 -0500

@@ -20,9 +20,9 @@

 typedef void (*signal_handler_t)(int);

-#ifdef HAVE_SIGDESCR_NP

+#if defined(HAVE_SIGDESCR_NP)

 # define sig_str(signum) sigdescr_np(signum)

-#elif HAVE_REENTRANT_STRSIGNAL

+#elif defined(HAVE_REENTRANT_STRSIGNAL)

 # define sig_str(signum) strsignal(signum)

 #else

 # define sig_str(signum) sys_siglist[signum]