update ceph source to reef 18.1.2

[ceph.git] / ceph / src / boost / tools / build / example / hello / readme.adoc

////
Copyright 2008 Jurko Gospodnetic
Copyright 2017 Rene Rivera
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.txt or https://www.bfgroup.xyz/b2/LICENSE.txt)
////

= Hello

This example shows a very basic Boost Build project set up so it compiles a
single executable from a single source file:

.`hello.cpp`
[source,cpp]
----
include::../../example/hello/hello.cpp[tag=source]
----

Our `jamroot.jam` is minimal and only specifies one `exe` target for the
program:

.`jamroot.jam`
[source,jam]
----
include::jamroot.jam[]
----

Building the example yields:

[source,bash]
----
> cd /example/hello
> b2
...found 8 targets...
...updating 4 targets...
common.mkdir bin/clang-darwin-4.2.1
common.mkdir bin/clang-darwin-4.2.1/debug
clang-darwin.compile.c++ bin/clang-darwin-4.2.1/debug/hello.o
clang-darwin.link bin/clang-darwin-4.2.1/debug/hello
...updated 4 targets...
> bin/clang-darwin-4.2.1/debug/hello
Hello!
----

NOTE: The actual paths in the `bin` sub-directory will depend on your
toolset.