https://bugs.gentoo.org/863437
https://github.com/containers/crun/commit/3df14584b84414df77b2079c1b8b48d44d0ceb61

From 3df14584b84414df77b2079c1b8b48d44d0ceb61 Mon Sep 17 00:00:00 2001
From: Giuseppe Scrivano <gscrivan@redhat.com>
Date: Tue, 26 Jul 2022 15:17:16 +0200
Subject: [PATCH] linux: fix build with glibc 2.36

glibc 2.36 has the new mount API in the <sys/mount.h> file.  These
definitions conflict with the definitions in the <linux/mount.h>
file.

Add a check and include <linux/mount.h> only if it doesn't conflict
with <sys/mount.h>.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2110738

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
--- a/configure.ac
+++ b/configure.ac
@@ -174,11 +174,21 @@ LIBS=""
 AC_MSG_CHECKING([for new mount API (fsconfig)])
 AC_COMPILE_IFELSE(
 	[AC_LANG_SOURCE([[
+			#include <sys/mount.h>
+			int cmd = FSCONFIG_CMD_CREATE;
+	]])],
+	[AC_MSG_RESULT(yes)
+		 AC_DEFINE([HAVE_FSCONFIG_CMD_CREATE_SYS_MOUNT_H], 1, [Define if FSCONFIG_CMD_CREATE is available in sys/mount.h])],
+	[AC_MSG_RESULT(no)])
+AC_COMPILE_IFELSE(
+	[AC_LANG_SOURCE([[
+			/* also make sure it doesn't conflict with <sys/mount.h> since it is always used.  */
+			#include <sys/mount.h>
 			#include <linux/mount.h>
 			int cmd = FSCONFIG_CMD_CREATE;
 	]])],
 	[AC_MSG_RESULT(yes)
-		 AC_DEFINE([HAVE_FSCONFIG_CMD_CREATE], 1, [Define if FSCONFIG_CMD_CREATE is available])],
+		 AC_DEFINE([HAVE_FSCONFIG_CMD_CREATE_LINUX_MOUNT_H], 1, [Define if FSCONFIG_CMD_CREATE is available in linux/mount.h])],
 	[AC_MSG_RESULT(no)])
 
 AC_MSG_CHECKING([for seccomp notify API])
--- a/src/libcrun/linux.c
+++ b/src/libcrun/linux.c
@@ -26,9 +26,13 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/mount.h>
-#ifdef HAVE_FSCONFIG_CMD_CREATE
+#ifdef HAVE_FSCONFIG_CMD_CREATE_LINUX_MOUNT_H
 #  include <linux/mount.h>
 #endif
+#if defined HAVE_FSCONFIG_CMD_CREATE_LINUX_MOUNT_H || defined HAVE_FSCONFIG_CMD_CREATE_SYS_MOUNT_H
+#  define HAVE_NEW_MOUNT_API
+#endif
+
 #include <sys/syscall.h>
 #include <sys/prctl.h>
 #ifdef HAVE_CAP
@@ -990,7 +994,7 @@ open_mount_target (libcrun_container_t *container, const char *target_rel, libcr
 static int
 fsopen_mount (runtime_spec_schema_defs_mount *mount)
 {
-#ifdef HAVE_FSCONFIG_CMD_CREATE
+#ifdef HAVE_NEW_MOUNT_API
   cleanup_close int fsfd = -1;
   int ret;
 
@@ -1016,7 +1020,7 @@ fsopen_mount (runtime_spec_schema_defs_mount *mount)
 static int
 fs_move_mount_to (int fd, int dirfd, const char *name)
 {
-#ifdef HAVE_FSCONFIG_CMD_CREATE
+#ifdef HAVE_NEW_MOUNT_API
   if (name)
     return syscall_move_mount (fd, "", dirfd, name, MOVE_MOUNT_F_EMPTY_PATH);