describe glibc requirements

hugo/content/installation/install/linux.md

@@ -22,14 +22,6 @@ then BornAgain can be installed as a Python package from the `pip` repository:
 $ python -m pip install bornagain
 ```
 
-#### Install BornAgain as a Debian package
-
-A BornAgain Debian/Ubuntu package (Python and GUI) is provided by external maintainers
-  at https://tracker.debian.org/pkg/bornagain.
-
-The only drawback is that versions may be lagging behind,
-in *unstable* by a couple of months, in *stable* by several years.
-
 #### Install using our installer
 
 A Linux installer for BornAgain (Python and GUI)
@@ -56,4 +48,26 @@ The GUI package was tested with the standard X11 window system.
 If you are using the alternative Wayland window system,
 please let us know about your experience.
 
+#### Compatibility with the platform
+
+BornAgain is built on Debian 11 and requires standard C library of version **2.31 or higher** (GLIBC version).
+
+This appies to both pip package and the installer.
+
+To see which GLIBC version is available on your system, run 
+```
+$ ldd --version
+```
+
+GLIBC versions of other Linux distributions can be seen at 
+https://repology.org/project/glibc/versions
+
+#### Install BornAgain as a Debian package
+
+A BornAgain Debian/Ubuntu package (Python and GUI) is provided by external maintainers
+  at https://tracker.debian.org/pkg/bornagain.
+
+The only drawback is that versions may be lagging behind,
+in *unstable* by a couple of months, in *stable* by several years.
+
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