From b7854ae53353fc45703fb6df13855dd731aea818 Mon Sep 17 00:00:00 2001
From: Egor Tensin <egor@tensin.name>
Date: Sun, 14 Jun 2026 20:55:00 +0200
Subject: cmake: more precise minimum version detection

---
 CMakeLists.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0da434d..7725cb3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,11 @@
-cmake_minimum_required(VERSION 3.1)
+if(DEFINED ENV{APPVEYOR})
+    # Required because the image used (Visual Studio 2013) ships with a CMake
+    # version that really is too old.
+    cmake_minimum_required(VERSION 3.12)
+else()
+    # oldstable as of May '26.
+    cmake_minimum_required(VERSION 3.25)
+endif()
 
 project(win7drv CXX)
 
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