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# Libtasn1 README -- Introduction information

This is GNU Libtasn1, a small ASN.1 library.

## License

The GNU Libtasn1 C library (lib/) is released under the GNU Lesser
General Public License (LGPL) version 2.1 or later; see
[COPYING.LESSERv2](COPYING.LESSERv2).

The command line tool (src/), self tests (tests/), examples
(examples/), and other auxiliary files, are licensed under the GNU
General Public License version 3.0 or later; see [COPYING](COPYING).

The manual (doc/) is released under the GNU Free Documentation
License. (FDL) version 1.3 or later, see
[doc/fdl-1.3.texi](doc/fdl-1.3.texi).

Other files are licensed as indicated in each file.  There may be
exceptions to these general rules, see each file for precise
information.

For any copyright year range specified as YYYY-ZZZZ in this package
note that the range specifies every single year in that closed interval.

## Building the library

We require several tools to build the software, including:

* [Make](https://www.gnu.org/software/make/)
* [Automake](https://www.gnu.org/software/automake/) (use 1.11.3 or later)
* [Autoconf](https://www.gnu.org/software/autoconf/)
* [Libtool](https://www.gnu.org/software/libtool/)
* [Texinfo](https://www.gnu.org/software/texinfo/)
* [help2man](http://www.gnu.org/software/help2man/)
* [Tar](https://www.gnu.org/software/tar/)
* [Gzip](https://www.gnu.org/software/gzip/)
* [bison](https://www.gnu.org/software/bison/)
* [Texlive & epsf](https://www.tug.org/texlive/) (for PDF manual)
* [GTK-DOC](https://www.gtk.org/gtk-doc/) (for API manual)
* [Git](https://git-scm.com/)
* [libabigail](https://pagure.io/libabigail/) (for abi comparison in make dist)
* [Valgrind](https://valgrind.org/) (optional)

The required software is typically distributed with your operating
system, and the instructions for installing them differ.  Here are
some hints:

Debian/Ubuntu:
```
sudo apt-get install make git autoconf automake libtool bison
sudo apt-get install texinfo help2man gtk-doc-tools valgrind abigail-tools
```

PDF manual - Debian <= stretch:
```
sudo apt-get install texlive-generic-recommended texlive texlive-extra-utils
```

PDF manual - Debian >= buster:
```
sudo apt-get install texlive-plain-generic texlive texlive-extra-utils
```

The next step is to run autoreconf, ./configure, etc:

```
$ ./bootstrap
```

Then build the project normally:

```
$ ./configure
$ make check
```

Happy hacking!

## Manual

The manual is in the `doc/` directory of the release.

You can also browse the manual online at:

- https://www.gnu.org/software/libtasn1/manual/
 - https://gnutls.gitlab.io/libtasn1/manual/
 - https://gnutls.gitlab.io/libtasn1/manual/libtasn1.html
 - https://gnutls.gitlab.io/libtasn1/manual/libtasn1.pdf
 - https://gnutls.gitlab.io/libtasn1/reference/
 - https://gnutls.gitlab.io/libtasn1/reference/libtasn1.pdf

## Code coverage report

The coverage report is at:

- https://gnutls.gitlab.io/libtasn1/coverage

## Issue trackers

- [Main issue tracker](https://gitlab.com/gnutls/libtasn1/issues)
 - [oss-fuzz found issues](https://bugs.chromium.org/p/oss-fuzz/issues/list?q=libtasn1&can=2)

## Homepage

The project homepage at the gnu site is at:

https://www.gnu.org/software/libtasn1/

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