https://bugs.gentoo.org/953761
Based on upstream patch:
https://github.com/GothenburgBitFactory/clog/commit/e2e9050c33da3a1dbf0a48be520299e63d32adf6.patch
From: Thomas Lauf <thomas.lauf@tngtech.com>

---
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93d99c6..df7cef8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.10)
 set (CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required
 set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 set (HAVE_CMAKE true)
diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index 1010224..3b996f7 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.10)
 message ("-- Configuring man pages")
 set (man_FILES clog.1)
 foreach (man_FILE ${man_FILES})
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f273c82..b888df9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required (VERSION 3.10)
 include_directories (${CMAKE_SOURCE_DIR}
                      ${CMAKE_SOURCE_DIR}/src
                      ${CMAKE_SOURCE_DIR}/src/libshared/src