Add reachover Makefiles for contrib/netbsd-tests/lib/librt

A variant of this code has been tested on amd64/i386 for some time by
EMC/Isilon on 10-STABLE/11-CURRENT. It builds on other architectures, but the
code will remain off until it's proven it works on virtual hardware or real
hardware on other architectures

Sponsored by: EMC / Isilon Storage Division

etc/mtree/BSD.tests.dist

@@ -149,6 +149,8 @@
             ..
             libproc
             ..
+            librt
+            ..
             libthr
                 dlopen
                 ..

lib/librt/Makefile

@@ -1,5 +1,7 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 LIB=rt
 SHLIB_MAJOR= 1
 CFLAGS+=-I${.CURDIR}/../libc/include -I${.CURDIR}
@@ -18,4 +20,6 @@ PRECIOUSLIB=
 
 VERSION_MAP=	${.CURDIR}/Version.map
 
+.include <bsd.arch.inc.mk>
+
 .include <bsd.lib.mk>

lib/librt/Makefile.amd64

@@ -0,0 +1,6 @@
+# $FreeBSD$
+
+.if ${MK_TESTS} != "no"
+SUBDIR+=	tests
+.endif
+

lib/librt/Makefile.i386

@@ -0,0 +1,6 @@
+# $FreeBSD$
+
+.if ${MK_TESTS} != "no"
+SUBDIR+=	tests
+.endif
+

lib/librt/tests/Makefile

@@ -0,0 +1,17 @@
+# $FreeBSD$
+
+OBJTOP=		${.OBJDIR:H:H:H}
+SRCTOP=		${.CURDIR:H:H:H}
+TESTSRC=	${SRCTOP}/contrib/netbsd-tests/lib/librt
+
+TESTSDIR=	${TESTSBASE}/lib/librt
+
+DPADD+=		${LIBRT}
+LDADD+=		-lrt
+
+NETBSD_ATF_TESTS_C=	sched_test
+NETBSD_ATF_TESTS_C+=	sem_test
+
+.include <netbsd-tests.test.mk>
+
+.include <bsd.test.mk>