diff --git a/headers/compatibility/bsd/errno.h b/headers/compatibility/bsd/errno.h
new file mode 100644
index 0000000000..afdbb0138d
--- /dev/null
+++ b/headers/compatibility/bsd/errno.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright 2008, Haiku, Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _BSD_ERRNO_H_
+#define _BSD_ERRNO_H_
+
+
+#include_next <errno.h>
+
+
+#define EDOOFUS	EINVAL
+
+#endif	/* _BSD_ERRNO_H_ */
diff --git a/headers/compatibility/bsd/libutil.h b/headers/compatibility/bsd/libutil.h
index 169a572c45..c8295aab99 100644
--- a/headers/compatibility/bsd/libutil.h
+++ b/headers/compatibility/bsd/libutil.h
@@ -40,7 +40,6 @@
 #define	_LIBUTIL_H_
 
 #include <stdint.h>
-#include <sys/param.h>
 #include <sys/types.h>
 
 #define PROPERTY_MAX_NAME	64
@@ -53,6 +52,7 @@ typedef struct _property {
 	char *value;
 } *properties;
 
+#ifdef _SYS_PARAM_H
 /* for pidfile.c */
 struct pidfh {
 	int	pf_fd;
@@ -60,6 +60,7 @@ struct pidfh {
 	dev_t	pf_dev;
 	ino_t	pf_ino;
 };
+#endif
 
 /* Avoid pulling in all the include files for no need */
 struct termios;
@@ -119,10 +120,12 @@ const char *pw_tempname(void);
 int	pw_tmp(int _mfd);
 #endif
 
+#ifdef _SYS_PARAM_H
 struct pidfh *pidfile_open(const char *path, mode_t mode, pid_t *pidptr);
 int pidfile_write(struct pidfh *pfh);
 int pidfile_close(struct pidfh *pfh);
 int pidfile_remove(struct pidfh *pfh);
+#endif
 
 __END_DECLS
 
diff --git a/headers/compatibility/bsd/signal.h b/headers/compatibility/bsd/signal.h
index a9ef3abf1b..ccd54cffb6 100644
--- a/headers/compatibility/bsd/signal.h
+++ b/headers/compatibility/bsd/signal.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006, Haiku, Inc. All Rights Reserved.
+ * Copyright 2006-2008, Haiku, Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _BSD_SIGNAL_H_
@@ -9,6 +9,9 @@
 #include_next <signal.h>
 
 
+#define	sigmask(sig) (1 << ((sig) - 1))
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/src/libs/util/Jamfile b/src/libs/util/Jamfile
index 22a89b2866..78712840db 100644
--- a/src/libs/util/Jamfile
+++ b/src/libs/util/Jamfile
@@ -9,6 +9,7 @@ SubDirCcFlags $(defines) ;
 
 StaticLibrary libutil.a :
 	fparseln.c
+	pidfile.c
 	realhostname.c
 	trimdomain.c
 ;
diff --git a/src/libs/util/pidfile.c b/src/libs/util/pidfile.c
index dbf6aa737c..ec6fa99320 100644
--- a/src/libs/util/pidfile.c
+++ b/src/libs/util/pidfile.c
@@ -172,7 +172,7 @@ pidfile_write(struct pidfh *pfh)
 		return (-1);
 	}
 
-	snprintf(pidstr, sizeof(pidstr), "%u", getpid());
+	snprintf(pidstr, sizeof(pidstr), "%lu", getpid());
 	if (pwrite(fd, pidstr, strlen(pidstr), 0) != (ssize_t)strlen(pidstr)) {
 		error = errno;
 		_pidfile_remove(pfh, 0);
diff --git a/src/libs/util/realhostname.c b/src/libs/util/realhostname.c
index 3fffcdb6e1..3366d73efa 100644
--- a/src/libs/util/realhostname.c
+++ b/src/libs/util/realhostname.c
@@ -89,7 +89,9 @@ realhostname_sa(char *host, size_t hsize, struct sockaddr *addr, int addrlen)
 {
 	int result, error;
 	char buf[NI_MAXHOST];
+#ifdef INET6
 	struct sockaddr_in lsin;
+#endif
 
 	result = HOSTNAME_INVALIDADDR;