From b73a1c06386f43b0b0d7ce99448b8c55f4c5156c Mon Sep 17 00:00:00 2001
From: Alexander Sosedkin <monk@unboiled.info>
Date: Sun, 28 Nov 2021 00:47:25 +0100
Subject: [PATCH] Document libcpuid dependency

---
 doc/manual/src/installation/prerequisites-source.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/manual/src/installation/prerequisites-source.md b/doc/manual/src/installation/prerequisites-source.md
index 0323a4f55..37e0b5a10 100644
--- a/doc/manual/src/installation/prerequisites-source.md
+++ b/doc/manual/src/installation/prerequisites-source.md
@@ -58,3 +58,9 @@
     `--disable-seccomp-sandboxing` option to the `configure` script (Not
     recommended unless your system doesn't support `libseccomp`). To get
     the library, visit <https://github.com/seccomp/libseccomp>.
+
+  - On 64-bit x86 machines only, `libcpuid` library
+    is used to determine which microarchitecture levels are supported
+    (e.g., as whether to have `x86_64-v2-linux` among additional system types).
+    The library is available from its homepage
+    <http://libcpuid.sourceforge.net>.