update version number, test with cmake 4.0, and a few warning fixes

Author: phlptp

.github/workflows/tests.yml

@@ -23,30 +23,35 @@ jobs:
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.7"
+        args: "-DUNITS_ENABLE_TESTS=OFF"
       if: success() || failure()
 
     - name: Check CMake 3.8
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.8"
+        args: "-DUNITS_ENABLE_TESTS=OFF"
       if: success() || failure()
 
     - name: Check CMake 3.9
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.9"
+        args: "-DUNITS_ENABLE_TESTS=OFF"
       if: success() || failure()
 
     - name: Check CMake 3.10
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.10"
+        args: "-DUNITS_ENABLE_TESTS=OFF"
       if: success() || failure()
 
     - name: Check CMake 3.11 (full)
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.11"
+        args: "-DUNITS_ENABLE_TESTS=OFF"
       if: success() || failure()
 
   cmake-config-2204:
@@ -59,6 +64,7 @@ jobs:
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.12"
+        args: "-DUNITS_ENABLE_TESTS=OFF"
       if: success() || failure()
 
     - name: Check CMake 3.13
@@ -173,4 +179,10 @@ jobs:
       uses: ./.github/actions/quick_cmake
       with:
         cmake-version: "3.31"
+      if: success() || failure()
+      
+    - name: Check CMake 4.0
+      uses: ./.github/actions/quick_cmake
+      with:
+        cmake-version: "4.0"
       if: success() || failure()

CMakeLists.txt

@@ -9,7 +9,7 @@
 # most of the policies, the new version is better (hence the change). We don't use the
 # 3.0...3.17 syntax because of a bug in an older MSVC's built-in and modified CMake 3.11
 if(${CMAKE_VERSION} VERSION_GREATER 3.22)
-    cmake_minimum_required(VERSION 3.22...3.31)
+    cmake_minimum_required(VERSION 3.22...4.0)
 else()
     cmake_minimum_required(VERSION 3.0)
     cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
@@ -23,7 +23,7 @@ endif()
 project(
     ${UNITS_CMAKE_PROJECT_NAME}
     LANGUAGES C CXX
-    VERSION 0.12.3
+    VERSION 0.13.0
 )
 include(CMakeDependentOption)
 include(CTest)