AC_CHECK_HEADERS([asm/sigcontext.h], [], [], [#include <signal.h>])
AC_CHECK_HEADERS([netinet/tcp.h netinet/udp.h],,, [#include <netinet/in.h>])
-diff -durN -x '*~' strace-4.5.1.orig/system.c strace-4.5.1/system.c
---- strace-4.5.1.orig/system.c 2002-11-06 15:00:13.000000000 +0100
-+++ strace-4.5.1/system.c 2004-12-21 09:52:32.005076136 +0100
-@@ -1626,16 +1626,7 @@
- };
-
- static struct xlat sysctl_vm[] = {
-- { VM_SWAPCTL, "VM_SWAPCTL" },
-- { VM_SWAPOUT, "VM_SWAPOUT" },
-- { VM_FREEPG, "VM_FREEPG" },
-- { VM_BDFLUSH, "VM_BDFLUSH" },
- { VM_OVERCOMMIT_MEMORY, "VM_OVERCOMMIT_MEMORY" },
-- { VM_BUFFERMEM, "VM_BUFFERMEM" },
-- { VM_PAGECACHE, "VM_PAGECACHE" },
-- { VM_PAGERDAEMON, "VM_PAGERDAEMON" },
-- { VM_PGT_CACHE, "VM_PGT_CACHE" },
-- { VM_PAGE_CLUSTER, "VM_PAGE_CLUSTER" },
- { 0, NULL },
- };
-