$NetBSD: patch-dl,v 1.5 2014/11/30 08:40:51 spz Exp $

SunOS needs unistd.h for sysconf().

--- mono/utils/dlmalloc.c.orig	2014-09-22 13:23:09.000000000 +0000
+++ mono/utils/dlmalloc.c
@@ -1208,11 +1208,14 @@ int mspace_mallopt(int, int);
 #ifndef LACKS_UNISTD_H
 #include <unistd.h>     /* for sbrk */
 #else /* LACKS_UNISTD_H */
-#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
+#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) || !defined(__DragonFly__)
 extern void*     sbrk(ptrdiff_t);
 #endif /* FreeBSD etc */
 #endif /* LACKS_UNISTD_H */
 #endif /* HAVE_MMAP */
+#ifdef __sun
+#include <unistd.h> /* for sysconf */
+#endif
 
 #ifndef WIN32
 #ifndef malloc_getpagesize
@@ -1375,7 +1378,11 @@ static int win32munmap(void* ptr, size_t
 #endif /* HAVE_MMAP */
 
 #if HAVE_MMAP && HAVE_MREMAP
+#ifdef linux
 #define CALL_MREMAP(addr, osz, nsz, mv) mremap((addr), (osz), (nsz), (mv))
+#else
+#define CALL_MREMAP(addr, osz, nsz, mv) mremap((addr), (osz), (addr), (nsz), (mv))
+#endif
 #else  /* HAVE_MMAP && HAVE_MREMAP */
 #define CALL_MREMAP(addr, osz, nsz, mv) MFAIL
 #endif /* HAVE_MMAP && HAVE_MREMAP */