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.. Copyright (C) 2014-2022 Free Software Foundation, Inc.
Originally contributed by David Malcolm <dmalcolm@redhat.com>
This is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<https://www.gnu.org/licenses/>.
.. default-domain:: cpp
Tutorial part 1: "Hello world"
==============================
Before we look at the details of the API, let's look at building and
running programs that use the library.
Here's a toy "hello world" program that uses the library's C++ API to
synthesize a call to `printf` and uses it to write a message to stdout.
Don't worry about the content of the program for now; we'll cover
the details in later parts of this tutorial.
.. literalinclude:: ../../examples/tut01-hello-world.cc
:language: c++
Copy the above to `tut01-hello-world.cc`.
Assuming you have the jit library installed, build the test program
using:
.. code-block:: console
$ gcc \
tut01-hello-world.cc \
-o tut01-hello-world \
-lgccjit
You should then be able to run the built program:
.. code-block:: console
$ ./tut01-hello-world
hello world
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