Build fix on windows

Build environment gcc-9 for linux
Update CI

Author: florianbecker

.github/workflows/build.yml

@@ -1,123 +1,85 @@
-name: Build
+name: CI
 
 on: [push]
 
 env:
-  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
   BUILD_TYPE: Release
 
 jobs:
   linux:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/actions/configuring-and-managing-workflows/configuring-a-workflow#configuring-a-build-matrix
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v2
 
+    - name: Install gcc-9
+      run: |
+          sudo apt-get install -y g++-9
+          echo "::set-env name=CC::gcc-9"
+          echo "::set-env name=CXX::g++-9"
+
     - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
       run: cmake -E make_directory ${{runner.workspace}}/build
 
     - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
       shell: bash
       working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source 
-      # and build directories, but this is only available with CMake 3.13 and higher.  
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
       run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
 
     - name: Build
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
       run: cmake --build . --config $BUILD_TYPE
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      # Execute tests defined by the CMake configuration.  
-      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest -C $BUILD_TYPE
+
   macOS:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/actions/configuring-and-managing-workflows/configuring-a-workflow#configuring-a-build-matrix
     runs-on: macos-latest
 
     steps:
     - uses: actions/checkout@v2
 
     - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
       run: cmake -E make_directory ${{runner.workspace}}/build
 
     - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
       shell: bash
       working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source 
-      # and build directories, but this is only available with CMake 3.13 and higher.  
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
       run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
 
     - name: Build
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
       run: cmake --build . --config $BUILD_TYPE
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      # Execute tests defined by the CMake configuration.  
-      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest -C $BUILD_TYPE
+
   windows:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/actions/configuring-and-managing-workflows/configuring-a-workflow#configuring-a-build-matrix
     runs-on: windows-latest
 
     steps:
     - uses: actions/checkout@v2
 
     - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
       run: cmake -E make_directory ${{runner.workspace}}/build
 
     - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
       shell: bash
       working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source 
-      # and build directories, but this is only available with CMake 3.13 and higher.  
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
       run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
 
     - name: Build
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
       run: cmake --build . --config $BUILD_TYPE
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      # Execute tests defined by the CMake configuration.  
-      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest -C $BUILD_TYPE
-
-
-

source/CMakeLists.txt

@@ -33,6 +33,7 @@ project(modern.cpp.logger)
 include_directories(../3rdparty)
 
 add_library(${PROJECT_NAME}
+  ../.github/workflows/build.yml
   ../README.md
   ../3rdparty/magic_enum.hpp
   ../3rdparty/Singleton.h

source/XmlFileLogger.cpp

@@ -28,6 +28,9 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/* stl header */
+#include <algorithm>
+
 /* magic enum */
 #include <magic_enum.hpp>