From 4e8909d9cdaba588085addc17b64d80b31bb98fa Mon Sep 17 00:00:00 2001
From: Evgeny Posenitskiy <45995097+q-posev@users.noreply.github.com>
Date: Wed, 11 Jan 2023 19:03:57 +0100
Subject: [PATCH 1/2] Add extern C pre-processing macro for C++

---
 src/templates_front/templator_front.org | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/templates_front/templator_front.org b/src/templates_front/templator_front.org
index f4133b6..132103f 100644
--- a/src/templates_front/templator_front.org
+++ b/src/templates_front/templator_front.org
@@ -25,6 +25,10 @@
 #ifndef TREXIO_H
 #define TREXIO_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdbool.h>
 #include <stdint.h>
 
@@ -6197,6 +6201,11 @@ contains
 * File suffixes                                                     :noexport:
 
   #+begin_src c :tangle suffix_front.h
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif
   #+end_src
 

From c8e37863c7eae1c30f5f1955313a7f76d9f1b2c3 Mon Sep 17 00:00:00 2001
From: Evgeny Posenitskiy <45995097+q-posev@users.noreply.github.com>
Date: Wed, 11 Jan 2023 19:34:27 +0100
Subject: [PATCH 2/2] Update README

---
 README.md | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 9d5c364..fd5e058 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 [![build](https://github.com/TREX-CoE/trexio/actions/workflows/actions.yml/badge.svg)](https://github.com/TREX-CoE/trexio/actions/workflows/actions.yml)
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/TREX-CoE/trexio)
 
-TREX library for efficient I/O.
+TREX library for efficient I/O. 
 
 
 ## Minimal requirements (for users):
@@ -37,6 +37,8 @@ TREX library for efficient I/O.
 - Emacs         (>= 26.0)
 - SWIG          (>= 4.0)   [required for the Python API]
 
+**Note:** The source code is auto-generated from the Emacs org-mode (`.org`) files following the literate programming approach. This is why the `src` directory is initially empty.
+
 ## Installation procedure from the GitHub repo clone (for developers):
 
 1. `git clone https://github.com/TREX-CoE/trexio.git`
@@ -83,13 +85,10 @@ The official releases of TREXIO `>=2.0.0` can be installed using the
 [GNU Guix](https://guix.gnu.org) functional package manager.
 The [trexio.scm](https://github.com/TREX-CoE/trexio/blob/master/tools/trexio.scm)
 Schema file contains the manifest specification for the `trexio` package.
-It can be installed within the selected `$GUIX_PROFILE` as follows:
+It can be installed as follows:
 
 ```
-guix package \
-	--profile=$GUIX_PROFILE \
-	--cores=<n_cores> \
-	--install-from-file=trexio.scm
+guix package --cores=<n_cores> --install-from-file=trexio.scm
 ```
 
 ## Installation procedure for Spack users
@@ -104,6 +103,18 @@ It can be installed as follows
 spack install --jobs <n_cores> trexio
 ```
 
+## Installation procedure for Debian/Ubuntu users
+
+The official release of TREXIO `2.2.0` is available as a Debian (`.deb`) package thanks to the [Debichem Team](https://wiki.debian.org/Debichem).
+The source code is hosted [here](https://salsa.debian.org/debichem-team/libtrexio) and 
+the pre-built binary files are available via the [Debian package registry](https://packages.debian.org/bookworm/libtrexio-dev).
+
+TREXIO is also available on [Ubuntu 23.04 (Lunar Lobster)](https://packages.ubuntu.com/lunar/libtrexio-dev) and newer and can be installed as follows:
+
+```
+sudo apt-get update && sudo apt-get install libtrexio-dev
+```
+
 ## Compilation without the HDF5 library
 
 By default, the configuration step proceeds to search for the [HDF5 library](https://portal.hdfgroup.org/display/HDF5/HDF5).