From a1352ef8469344953b7dada7164504a5bf85f10c Mon Sep 17 00:00:00 2001
From: "Tim.Ebbeke" <Tim.Ebbeke@sennheiser.com>
Date: Mon, 28 Aug 2023 16:57:54 +0200
Subject: [PATCH 1/3] Moved external project include.

---
 cmake/backend/emscripten.cmake | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/cmake/backend/emscripten.cmake b/cmake/backend/emscripten.cmake
index 4375f58..95fb5d0 100644
--- a/cmake/backend/emscripten.cmake
+++ b/cmake/backend/emscripten.cmake
@@ -1,7 +1,5 @@
 project(emscripten-git NONE)
 
-include(ExternalProject)
-
 if(UNIX)
     add_custom_command(
         OUTPUT "${CMAKE_BINARY_DIR}/_deps/emscripten-src/upstream/emscripten/.emscripten"
@@ -74,6 +72,7 @@ function(nui_add_emscripten_target)
         set(ENABLE_BIN2HPP "yes")
     endif()
 
+    include(ExternalProject)
     ExternalProject_Add(
         "${NUI_ADD_EMSCRIPTEN_TARGET_ARGS_TARGET}-emscripten"
         SOURCE_DIR "${SOURCE_DIR}"

From b7ed613138242211f9a2eb4b57dc90661e0d1f15 Mon Sep 17 00:00:00 2001
From: "Tim.Ebbeke" <Tim.Ebbeke@sennheiser.com>
Date: Mon, 28 Aug 2023 17:11:33 +0200
Subject: [PATCH 2/3] Updated roar dependency.

---
 cmake/dependencies/roar.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/dependencies/roar.cmake b/cmake/dependencies/roar.cmake
index 2139445..0576123 100644
--- a/cmake/dependencies/roar.cmake
+++ b/cmake/dependencies/roar.cmake
@@ -1,6 +1,6 @@
 option(NUI_FETCH_ROAR "Fetch roar" ON)
 set(NUI_ROAR_REPOSITORY "https://github.com/5cript/roar.git" CACHE STRING "roar repository")
-set(NUI_ROAR_TAG "3c9fdde93d0f70f0d0dd32c68f10587ef43dce9d" CACHE STRING "roar tag")
+set(NUI_ROAR_TAG "0320c15c7b6b25b51eb17c4ee782d0de23acf697" CACHE STRING "roar tag")
 
 if(NUI_FETCH_ROAR)
     include(FetchContent)

From d61efc755c3c8c90ec2fb17e99c8ce8e483e4432 Mon Sep 17 00:00:00 2001
From: "Tim.Ebbeke" <Tim.Ebbeke@sennheiser.com>
Date: Mon, 28 Aug 2023 17:13:21 +0200
Subject: [PATCH 3/3] Added ubuntu 20 workflow.

---
 .github/workflows/build_and_test.yml | 34 ++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 06a8dcf..7425020 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -49,6 +49,40 @@ jobs:
     # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
     # run: ctest -C ${{env.BUILD_TYPE}}
 
+  ubuntu20:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: awalsh128/cache-apt-pkgs-action@v1.3.0
+        with:
+          packages: libwebkit2gtk-4.0-dev libcurl4-openssl-dev libcrypto++-dev ninja-build
+
+      - name: Install boost
+        uses: MarkusJx/install-boost@v2.4.1
+        id: install-boost
+        with:
+          # REQUIRED: Specify the required boost version
+          # A list of supported versions can be found here:
+          # https://github.com/MarkusJx/prebuilt-boost/blob/main/versions-manifest.json
+          boost_version: 1.81.0
+          # OPTIONAL: Specify a platform version
+          platform_version: 20.04
+
+      - name: Setup clang
+        uses: egor-tensin/setup-clang@v1
+        with:
+          version: 15
+          platform: x64
+
+      - name: Configure CMake
+        run: cmake -B ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} -G"Ninja" -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DNUI_BUILD_EXAMPLES=off -DCMAKE_CXX_EXTENSIONS=on -DCMAKE_CXX_COMPILER=c++ -DCMAKE_C_COMPILER=cc -DCMAKE_CXX_STANDARD=20
+        env:
+          BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
+
+      - name: Build
+        run: cmake --build ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} --config ${{env.BUILD_TYPE}}
+
   windows-msys2:
     runs-on: windows-2022
     defaults: