chore: bump to 3.21.0

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.20.5
+current_version = 3.21.0
 
 [bumpversion:file:.gitlab-ci.yml]
 search = cmake-{current_version}-linux

.gitlab-ci.yml

@@ -5,7 +5,7 @@ test_code:
     - apt-get update && apt-get install -y make cmake libboost-dev git
     # We will install latest CMake, even though Ubuntu has a recent one
     - mkdir -p $HOME/.local
-    - curl -s "https://cmake.org/files/v3.20/cmake-3.20.5-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C $HOME/.local
+    - curl -s "https://cmake.org/files/v3.21/cmake-3.21.0-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C $HOME/.local
     - export PATH=$HOME/.local/bin:$PATH
   script:
     - cmake -S examples -B build

README.md

@@ -7,7 +7,7 @@ Certainly there are no shortage of problems when building.
 But I think that, in 2020, we have a very good solution to quite a few of those problems.
 It's CMake. Not CMake 2.8 though; that was released before C++11 even existed!
 Nor the horrible examples out there for CMake (even those posted on KitWare's own tutorials list).
-I'm talking about Modern CMake. CMake 3.4+, maybe even CMake 3.20+!
+I'm talking about Modern CMake. CMake 3.4+, maybe even CMake 3.21+!
 It's clean, powerful, and elegant, so you can spend most of your time coding, not adding lines to an unreadable, unmaintainable Make (Or CMake 2) file.
 And CMake 3.11+ is supposed to be significantly faster, as well!
 

chapters/basics.md

@@ -36,7 +36,7 @@ Windows users, who also usually have a very recent version of CMake.
 This is what new projects should do:
 
 ```cmake
-cmake_minimum_required(VERSION 3.7...3.20)
+cmake_minimum_required(VERSION 3.7...3.21)
 
 if(${CMAKE_VERSION} VERSION_LESS 3.12)
     cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
@@ -56,10 +56,10 @@ you will want to do this instead:
 ```cmake
 cmake_minimum_required(VERSION 3.7)
 
-if(${CMAKE_VERSION} VERSION_LESS 3.20)
+if(${CMAKE_VERSION} VERSION_LESS 3.21)
     cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
 else()
-    cmake_policy(VERSION 3.20)
+    cmake_policy(VERSION 3.21)
 endif()
 ```
 

chapters/intro/installing.md

@@ -4,7 +4,7 @@
 Your CMake version should be newer than your compiler. It should be newer than the libraries you are using (especially Boost). New versions work better for everyone.
 {% endhint %}
 
-If you have a built in copy of CMake, it isn't special or customized for your system. You can easily install a new one instead, either on the system level or the user level. Feel free to instruct your users here if they complain about a CMake requirement being set too high. Especially if they want 3.1+ support. Maybe even if they want 3.20+ support...
+If you have a built in copy of CMake, it isn't special or customized for your system. You can easily install a new one instead, either on the system level or the user level. Feel free to instruct your users here if they complain about a CMake requirement being set too high. Especially if they want 3.1+ support. Maybe even if they want 3.21+ support...
 
 #### Quick list (more info on each method below)
 
@@ -34,14 +34,14 @@ You can [download CMake from KitWare][download]. This is how you will probably g
 On Linux, there are several options. Kitware provides a [Debian/Ubunutu apt repository][apt], as well as [snap packages][snap]. There are universal Linux binaries provided, but you'll need to pick an install location. If you already use `~/.local` for user-space packages, the following single line command[^1] will get CMake for you [^2]:
 
 {% term %}
-~ $ wget -qO- "https://cmake.org/files/v3.20/cmake-3.20.5-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C ~/.local
+~ $ wget -qO- "https://cmake.org/files/v3.21/cmake-3.21.0-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C ~/.local
 {% endterm %}
 
-The names changed in 3.20; older releases had names like `cmake-3.19.7-Linux-x86_64.tar.gz`. If you just want a local folder with CMake only:
+The names changed in 3.21; older releases had names like `cmake-3.19.7-Linux-x86_64.tar.gz`. If you just want a local folder with CMake only:
 
 {% term %}
-~ $ mkdir -p cmake-3.20 && wget -qO- "https://cmake.org/files/v3.20/cmake-3.20.5-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C cmake-3.20
-~ $ export PATH=`pwd`/cmake-3.20/bin:$PATH
+~ $ mkdir -p cmake-3.21 && wget -qO- "https://cmake.org/files/v3.21/cmake-3.21.0-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C cmake-3.21
+~ $ export PATH=`pwd`/cmake-3.21/bin:$PATH
 {% endterm %}
 
 You'll obviously want to append to the PATH every time you start a new terminal, or add it to your `.bashrc` or to an [LMod][] system.
@@ -49,7 +49,7 @@ You'll obviously want to append to the PATH every time you start a new terminal,
 And, if you want a system install, install to `/usr/local`; this is an excellent choice in a Docker container, for example on GitLab CI. Do not try it on a non-containerized system.
 
 {% term %}
-docker $ wget -qO- "https://cmake.org/files/v3.20/cmake-3.20.5-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C /usr/local
+docker $ wget -qO- "https://cmake.org/files/v3.21/cmake-3.21.0-linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C /usr/local
 {% endterm %}
 
 

examples/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11...3.20)
+cmake_minimum_required(VERSION 3.11...3.21)
 
 project(ModernCMakeExamples)
 set(MODERN_CMAKE_BUILD_TESTING ON)

examples/extended-project/CMakeLists.txt

@@ -1,5 +1,5 @@
-# Works with 3.11 and tested through 3.20
-cmake_minimum_required(VERSION 3.11...3.20)
+# Works with 3.11 and tested through 3.21
+cmake_minimum_required(VERSION 3.11...3.21)
 
 # Project name and a few useful settings. Other commands can pick up the results
 project(

examples/fetch/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14...3.20)
+cmake_minimum_required(VERSION 3.14...3.21)
 
 project(FetchExample LANGUAGES CXX)
 

examples/root-dict/CMakeLists.txt

@@ -2,7 +2,7 @@
 
 ## [main]
 
-cmake_minimum_required(VERSION 3.4...3.20)
+cmake_minimum_required(VERSION 3.4...3.21)
 
 project(RootDictExample LANGUAGES CXX)
 

examples/root-simple/CMakeLists.txt

@@ -1,7 +1,7 @@
 # CMake ROOT simple example
 
 ## [main]
-cmake_minimum_required(VERSION 3.1...3.20)
+cmake_minimum_required(VERSION 3.1...3.21)
 
 project(RootSimpleExample LANGUAGES CXX)
 

examples/root-usefile/CMakeLists.txt

@@ -1,7 +1,7 @@
 # CMake ROOT usefile example
 
 ## [main]
-cmake_minimum_required(VERSION 3.1...3.20)
+cmake_minimum_required(VERSION 3.1...3.21)
 
 project(RootUseFileExample LANGUAGES CXX)
 

examples/simple-project/CMakeLists.txt

@@ -6,7 +6,7 @@
 # You should always specify a range with the newest
 # and oldest tested versions of CMake. This will ensure
 # you pick up the best policies.
-cmake_minimum_required(VERSION 3.1...3.20)
+cmake_minimum_required(VERSION 3.1...3.21)
 
 # This is your project statement. You should always list languages;
 # Listing the version is nice here since it sets lots of useful variables