libnetworking: Add <machine/_align.h>

This is necessary for new <sys/socket.h>.

cpukit/libnetworking/Makefile.am

@@ -51,7 +51,8 @@ libnetworking_a_SOURCES += kern/kern_mib.c kern/kern_subr.c \
 
 include_machinedir = $(includedir)/machine
 
-include_machine_HEADERS = machine/cpu.h
+include_machine_HEADERS = machine/_align.h
+include_machine_HEADERS += machine/cpu.h
 include_machine_HEADERS += machine/cpufunc.h
 include_machine_HEADERS += machine/in_cksum.h
 include_machine_HEADERS += machine/vmparam.h

cpukit/libnetworking/machine/_align.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _MACHINE_INCLUDE__ALIGN_H_
+#define	_MACHINE_INCLUDE__ALIGN_H_
+
+#include <sys/_types.h>
+
+#define	_ALIGNBYTES	(sizeof(long long) - 1)
+#define	_ALIGN(_p)	(((__uintptr_t)(_p) + _ALIGNBYTES) & ~_ALIGNBYTES)
+
+#endif /* !_MACHINE_INCLUDE__ALIGN_H_ */

cpukit/libnetworking/preinstall.am

@@ -57,6 +57,10 @@ $(PROJECT_INCLUDE)/machine/$(dirstamp):
 	@: > $(PROJECT_INCLUDE)/machine/$(dirstamp)
 PREINSTALL_DIRS += $(PROJECT_INCLUDE)/machine/$(dirstamp)
 
+$(PROJECT_INCLUDE)/machine/_align.h: machine/_align.h $(PROJECT_INCLUDE)/machine/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/machine/_align.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/machine/_align.h
+
 $(PROJECT_INCLUDE)/machine/cpu.h: machine/cpu.h $(PROJECT_INCLUDE)/machine/$(dirstamp)
 	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/machine/cpu.h
 PREINSTALL_FILES += $(PROJECT_INCLUDE)/machine/cpu.h