Downgrade required CMake to 3.16

horenmar · horenmar · commit 232e89378555 · 2025-01-05T23:45:00.000+01:00
We still want to build VS 2017 through AppVeyor, and those images
have CMake 3.16.2 installed. We could install newer CMake as part
of the build, but since we don't use newer CMake features yet, this
is simpler.
diff --git a/.conan/test_package/CMakeLists.txt b/.conan/test_package/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.16)
 project(PackageTest CXX)
 
 find_package(Catch2 CONFIG REQUIRED)
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.16)
 
 # detect if Catch is being bundled,
 # disable testsuite in that case
diff --git a/docs/cmake-integration.md b/docs/cmake-integration.md
@@ -85,7 +85,7 @@ a target. This function works by running the resulting executable with
 
 #### Usage
 ```cmake
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.16)
 
 project(baz LANGUAGES CXX VERSION 0.0.1)
 
@@ -239,7 +239,7 @@ parsed are *silently ignored*.
 #### Usage
 
 ```cmake
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.16)
 
 project(baz LANGUAGES CXX VERSION 0.0.1)
 
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required( VERSION 3.20 )
+cmake_minimum_required( VERSION 3.16 )
 
 project( Catch2Examples LANGUAGES CXX )
 
diff --git a/tests/ExtraTests/CMakeLists.txt b/tests/ExtraTests/CMakeLists.txt
@@ -2,7 +2,7 @@
 # Build extra tests.
 #
 
-cmake_minimum_required( VERSION 3.20 )
+cmake_minimum_required( VERSION 3.16 )
 
 project( Catch2ExtraTests LANGUAGES CXX )
 
diff --git a/tests/TestScripts/DiscoverTests/CMakeLists.txt b/tests/TestScripts/DiscoverTests/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.16)
 
 project(discover-tests-test
   LANGUAGES CXX
diff --git a/tools/misc/CMakeLists.txt b/tools/misc/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.16)
 
 project(CatchCoverageHelper)
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-cmake_minimum_required(VERSION 3.20)`
	`1`	`+cmake_minimum_required(VERSION 3.16)`
`2`	`2`	`project(PackageTest CXX)`
`3`	`3`
`4`	`4`	`find_package(Catch2 CONFIG REQUIRED)`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-cmake_minimum_required( VERSION 3.20 )`
	`1`	`+cmake_minimum_required( VERSION 3.16 )`
`2`	`2`
`3`	`3`	`project( Catch2Examples LANGUAGES CXX )`
`4`	`4`
Original file line number	Diff line number	Diff line change
`@@ -2,7 +2,7 @@`
`2`	`2`	`# Build extra tests.`
`3`	`3`	`#`
`4`	`4`
`5`		`-cmake_minimum_required( VERSION 3.20 )`
	`5`	`+cmake_minimum_required( VERSION 3.16 )`
`6`	`6`
`7`	`7`	`project( Catch2ExtraTests LANGUAGES CXX )`
`8`	`8`