versions CMakePPLang too

.gitignore

@@ -10,5 +10,6 @@ docs/source/make_tutorials.py
 !docs/source/tutorials/index.rst
 __pycache__/
 
-#CLion project settings
+#IDE project settings
 .idea/
+settings.json

CMakeLists.txt

@@ -1,21 +1,30 @@
+#3.14 needed for FetchContent_MakeAvailable()
 set(_ct_min_cmake_version "3.14" CACHE INTERNAL "")
-cmake_minimum_required(VERSION "${_ct_min_cmake_version}") #Required for FetchContent_MakeAvailable()
+cmake_minimum_required(VERSION "${_ct_min_cmake_version}")
 project(CMakeTest VERSION 1.0.0 LANGUAGES NONE)
 
 if(NOT CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
-	set(_ct_min_cmake_version "${_ct_min_cmake_version}" PARENT_SCOPE) #Make sure projects using CMakeTest have this variable
+    #Make sure projects using CMakeTest have this variable
+	set(_ct_min_cmake_version "${_ct_min_cmake_version}" PARENT_SCOPE)
 endif()
 
+# Add cmake directory to CMake's module path, iff it's not already there
 list(FIND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" path_has_cmake)
 if(${path_has_cmake} STREQUAL "-1")
     list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 endif()
+
+# TODO: Should this be in the above if block?
 set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" CACHE STRING "" FORCE)
+
+# Make sure projects including CMakeTest can find it too
 if(NOT CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
-    set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" PARENT_SCOPE) #For projects including CMakeTest
+    set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" PARENT_SCOPE)
 endif()
 
-include("${PROJECT_SOURCE_DIR}/cmake/get_cmaize.cmake")
+
+include(get_cmakepp_lang)
+include(get_cmaize)
 include(cmake_test/cmake_test)
 
 if("${BUILD_TESTING}")

cmake/get_cmaize.cmake

@@ -20,6 +20,7 @@
 #]]
 
 include_guard()
+include(versions)
 
 #[[
 # This function encapsulates the process of getting CMakePP using CMake's
@@ -39,7 +40,7 @@ function(get_cmaize)
         FetchContent_Declare(
             cmaize
             GIT_REPOSITORY https://github.com/CMakePP/CMaize
-            GIT_TAG 3cef972afa573c8d0c56a832341b8b20646f3d16
+            GIT_TAG ${CMAIZE_VERSION}
         )
         FetchContent_MakeAvailable(cmaize)
 

cmake/get_cmakepp_lang.cmake

@@ -0,0 +1,61 @@
+# Copyright 2023 CMakePP
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+#[[[ @module
+# .. warning::
+#    This module is only used when building CMakeTest,
+#    and including it automatically pulls in CMakePPLang through
+#    FetchContent.
+#]]
+
+include_guard()
+include(versions)
+
+#[[
+# This function encapsulates the process of getting CMakePPLang using CMake's
+# FetchContent module. When CMaize supports find_or_build for CMake modules this
+# file will be deprecated.
+#]]
+function(get_cmakepp_lang)
+    include(
+        cmakepp_lang/cmakepp_lang
+        OPTIONAL
+        RESULT_VARIABLE cmakepp_lang_found
+    )
+    if(NOT cmakepp_lang_found)
+        # Store whether we are building tests or not, then turn off the tests
+        set(build_testing_old "${BUILD_TESTING}")
+        set(BUILD_TESTING OFF CACHE BOOL "" FORCE)
+        # Download CMakePP and bring it into scope
+        include(FetchContent)
+        FetchContent_Declare(
+            cmakepp_lang
+            GIT_REPOSITORY https://github.com/CMakePP/CMakePPLang
+            GIT_TAG ${CMAKEPP_LANG_VERSION}
+        )
+        FetchContent_MakeAvailable(cmakepp_lang)
+
+        set(
+            CMAKE_MODULE_PATH
+            "${CMAKE_MODULE_PATH}" "${cmakepp_lang_SOURCE_DIR}/cmake"
+            PARENT_SCOPE
+        )
+
+        # Restore the previous value
+        set(BUILD_TESTING "${build_testing_old}" CACHE BOOL "" FORCE)
+    endif()
+endfunction()
+
+# Call the function we just wrote to get CMaize
+get_cmakepp_lang()

cmake/versions.cmake

@@ -0,0 +1,18 @@
+# Copyright 2023 CMakePP
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+include_guard()
+
+set(CMAKEPP_LANG_VERSION v1.0.0)
+set(CMAIZE_VERSION 9acce67d19097e50fc744d76d0c49897bc69b9da)