build: require CMake >= 3.10 due to dropped legacy support

CMake version 4.0 and later require minimum version of 3.5 or later.
Update to minimum version 3.10 which is the last not deprecated minimum
version.

CMake 3.10 was released in November 2017 and is included in Ubuntu 18.04.

Signed-off-by: Hauke Mehrtens <[email protected]>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index acf68086a8016b72367fce1b403c44c9a09cadd3..a87ad08fcc821e3f3ecf6d1ef3bf058ff2777a7f 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 3.10)
 
 PROJECT(cgi-io C)