Add devel/cloudabi-toolchain, a metaport to install all of the toolchain.

We can't reasonably expect that people want to install 7 ports to get a
working C/C++ toolchain. Add a simple metaport to install all of them in
one go.

Differential Revision:	https://reviews.freebsd.org/D2929
Reviewed by:	bapt

devel/Makefile

@@ -252,6 +252,7 @@
     SUBDIR += cloudabi-libc++
     SUBDIR += cloudabi-libc++abi
     SUBDIR += cloudabi-libunwind
+    SUBDIR += cloudabi-toolchain
     SUBDIR += cmake
     SUBDIR += cmake-fedora
     SUBDIR += cmake-gui

devel/cloudabi-toolchain/Makefile

+# Created by: Ed Schouten <ed@FreeBSD.org>
+# $FreeBSD$
+
+PORTNAME=	cloudabi-toolchain
+PORTVERSION=	1.0
+CATEGORIES=	devel
+
+MAINTAINER=	ed@FreeBSD.org
+COMMENT=	C and C++ toolchain for CloudABI
+
+USES=		metaport
+
+LIBDIR=		${LOCALBASE}/x86_64-unknown-cloudabi/lib
+
+# C and C++ compiler to be run on the development system.
+RUN_DEPENDS+=	x86_64-unknown-cloudabi-ar:${PORTSDIR}/devel/cloudabi-binutils \
+		x86_64-unknown-cloudabi-cc:${PORTSDIR}/lang/cloudabi-clang
+
+# Libraries for C language support.
+RUN_DEPENDS+=	${LIBDIR}/libc.a:${PORTSDIR}/devel/cloudabi-cloudlibc \
+		${LIBDIR}/libcompiler_rt.a:${PORTSDIR}/devel/cloudabi-compiler-rt
+
+# Libraries for C++ language support.
+RUN_DEPENDS+=	${LIBDIR}/libc++.a:${PORTSDIR}/devel/cloudabi-libc++ \
+		${LIBDIR}/libc++abi.a:${PORTSDIR}/devel/cloudabi-libc++abi \
+		${LIBDIR}/libunwind.a:${PORTSDIR}/devel/cloudabi-libunwind
+
+.include <bsd.port.mk>

devel/cloudabi-toolchain/pkg-descr

+Nuxi CloudABI is an application binary interface for UNIX-like operating
+systems built around the concept of capability-based security. In a
+nutshell, it means that you can run processes directly on top of a UNIX
+kernel while keeping complete control over the actions the process is
+allowed to perform.
+
+This port installs a full toolchain that can be used to compile C and
+C++ software against CloudABI.
+
+WWW: https://github.com/NuxiNL/cloudlibc