diff --git a/src/modules/systemlib/CMakeLists.txt b/src/modules/systemlib/CMakeLists.txt
index f1e516d48e..485c45b64b 100644
--- a/src/modules/systemlib/CMakeLists.txt
+++ b/src/modules/systemlib/CMakeLists.txt
@@ -47,13 +47,8 @@ set(SRCS
 
 if(${OS} STREQUAL "nuttx")
 	list(APPEND SRCS
-		err.c
 		printload.c
 		)
-elseif ("${CONFIG_SHMEM}" STREQUAL "1")
-	list(APPEND SRCS
-		print_load_posix.c
-		)
 else()
 	list(APPEND SRCS
 		print_load_posix.c
diff --git a/src/modules/systemlib/err.c b/src/modules/systemlib/err.c
deleted file mode 100644
index 2aa6f4634a..0000000000
--- a/src/modules/systemlib/err.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name PX4 nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/**
- * @file err.c
- *
- * Simple error/warning functions, heavily inspired by the BSD functions of
- * the same names.
- */
-
-#include <px4_config.h>
-
-#include <inttypes.h>
-
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-
-#include "err.h"
-
-#define NOCODE		1000	/* larger than maximum errno */
-
-#if CONFIG_NFILE_STREAMS > 0
-#  include <stdio.h>
-#elif defined(CONFIG_ARCH_LOWPUTC)
-#  include <debug.h>
-extern int lib_lowvprintf(const char *fmt, va_list ap);
-#else
-#  warning Cannot output without one of CONFIG_NFILE_STREAMS or CONFIG_ARCH_LOWPUTC
-#endif
-
-// XXX not used anymore
-#if 0
-
-static void
-warnerr_core(int errcode, const char *fmt, va_list args)
-{
-#if CONFIG_NFILE_STREAMS > 0
-	fprintf(stderr, "%s: ", px4_get_taskname());
-	vfprintf(stderr, fmt, args);
-
-	/* convenience as many parts of NuttX use negative errno */
-	if (errcode < 0) {
-		errcode = -errcode;
-	}
-
-	if (errcode < NOCODE) {
-		fprintf(stderr, ": %s", strerror(errcode));
-	}
-
-	fprintf(stderr, "\n");
-#elif CONFIG_ARCH_LOWPUTC
-	syslog("%s: ", px4_get_taskname());
-	lowvsyslog(fmt, args);
-
-	/* convenience as many parts of NuttX use negative errno */
-	if (errcode < 0) {
-		errcode = -errcode;
-	}
-
-	if (errcode < NOCODE) {
-		syslog(": %s", strerror(errcode));
-	}
-
-	syslog("\n");
-#endif
-}
-
-void
-err(int exitcode, const char *fmt, ...)
-{
-	va_list	args;
-
-	va_start(args, fmt);
-	warnerr_core(errno, fmt, args);
-	va_end(args);
-	exit(exitcode);
-}
-
-void
-verr(int exitcode, const char *fmt, va_list args)
-{
-	warnerr_core(errno, fmt, args);
-	exit(exitcode);
-}
-
-void
-errc(int exitcode, int errcode, const char *fmt, ...)
-{
-	va_list args;
-
-	va_start(args, fmt);
-	warnerr_core(errcode, fmt, args);
-	va_end(args);
-	exit(exitcode);
-}
-
-void
-verrc(int exitcode, int errcode, const char *fmt, va_list args)
-{
-	warnerr_core(errcode, fmt, args);
-	exit(exitcode);
-}
-
-void
-errx(int exitcode, const char *fmt, ...)
-{
-	va_list args;
-
-	va_start(args, fmt);
-	warnerr_core(NOCODE, fmt, args);
-	va_end(args);
-	exit(exitcode);
-}
-
-void
-verrx(int exitcode, const char *fmt, va_list args)
-{
-	warnerr_core(NOCODE, fmt, args);
-	exit(exitcode);
-}
-
-void
-warn(const char *fmt, ...)
-{
-	va_list args;
-
-	va_start(args, fmt);
-	vwarn(fmt, args);
-	va_end(args);
-}
-
-void
-vwarn(const char *fmt, va_list args)
-{
-	warnerr_core(errno, fmt, args);
-}
-
-void
-warnc(int errcode, const char *fmt, ...)
-{
-	va_list args;
-
-	va_start(args, fmt);
-	vwarnc(errcode, fmt, args);
-	va_end(args);
-}
-
-void
-vwarnc(int errcode, const char *fmt, va_list args)
-{
-	warnerr_core(errcode, fmt, args);
-}
-
-void
-warnx(const char *fmt, ...)
-{
-	va_list args;
-
-	va_start(args, fmt);
-	vwarnx(fmt, args);
-	va_end(args);
-}
-
-void
-vwarnx(const char *fmt, va_list args)
-{
-	warnerr_core(NOCODE, fmt, args);
-}
-#endif