ci: build workflow

Author: BenMcAvoy

.github/workflows/build.yml

@@ -0,0 +1,49 @@
+name: build
+on: [push, pull_request, workflow_dispatch]
+
+jobs:
+  windows:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout exgine
+        uses: actions/checkout@v4
+        with:
+          path: exgine
+          submodules: 'recursive'
+      - name: Install Dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y build-essential cmake
+          sudo apt install libwayland-dev libxkbcommon-dev xorg-dev
+          sudo apt install -y mingw-w64 mingw-w64-tools ninja-build libpthread-stubs0-dev
+      - name: Configure
+        run: cmake -Bbuild -Hexgine -DCMAKE_TOOLCHAIN_FILE=windows.cmake -DCMAKE_INSTALL_PREFIX=$PWD/install
+      - name: Build
+        run: cmake --build build --config Release -j2
+      - uses: actions/upload-artifact@v4
+        with:
+          name: exgine_windows-x64
+          path: |
+            build/starter.exe
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout exgine
+        uses: actions/checkout@v4
+        with:
+          path: exgine
+          submodules: 'recursive'
+      - name: Install Dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y build-essential cmake
+          sudo apt install libwayland-dev libxkbcommon-dev xorg-dev
+      - name: Configure
+        run: cmake -Bbuild -Hexgine -DCMAKE_INSTALL_PREFIX=$PWD/install
+      - name: Build
+        run: cmake --build build --config Release -j2
+      - uses: actions/upload-artifact@v4
+        with:
+          name: exgine_linux-x64
+          path: |
+            build/starter

CMakeLists.txt

@@ -13,7 +13,10 @@ set (CMAKE_CXX_STANDARD_REQUIRED ON)
 # Project declaration
 project(ExgineRoot)
 
-if (WIN32)
+# we need to check if we're actually on windows, not just cross-compiling
+if (WIN32 AND NOT CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+	message(STATUS "Not on Windows, not enabling unicode support")
+elseif (WIN32)
 	message(STATUS "Manually enabling unicode support")
     add_compile_options(/utf-8)
 endif()

windows.cmake

@@ -0,0 +1,19 @@
+# Specify the target system
+SET(CMAKE_SYSTEM_NAME Windows)
+SET(CMAKE_SYSTEM_VERSION 1)
+SET(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+# Specify the cross-compiling toolchain
+SET(CMAKE_C_COMPILER /usr/bin/x86_64-w64-mingw32-gcc)
+SET(CMAKE_CXX_COMPILER /usr/bin/x86_64-w64-mingw32-g++)
+
+# Specify the Windows target sysroot (optional, but recommended)
+SET(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
+
+# Adjust search paths so that CMake finds the right libraries and headers for cross-compiling
+SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+
+# Specify the Windows output binary type
+SET(CMAKE_CXX_STANDARD 20)