try the build both ways thing

.github/workflows/build-validation.yml

@@ -104,6 +104,55 @@ jobs:
         name: soh-linux
         path: build-cmake/src/*.a
         if-no-files-found: error
+  build-linux-no-mpq:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y $(cat .github/workflows/apt-deps.txt)
+    - name: ccache
+      uses: hendrikmuhs/ccache-action@v1.2.11
+      with:
+        key: ${{ matrix.os }}-ccache-${{ github.ref }}-${{ github.sha }}
+        restore-keys: |
+          ${{ matrix.os }}-ccache-${{ github.ref }}
+          ${{ matrix.os }}-ccache-
+    - name: Install latest SDL
+      run: |
+        export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+        wget https://www.libsdl.org/release/SDL2-2.24.1.tar.gz
+        tar -xzf SDL2-2.24.1.tar.gz
+        cd SDL2-2.24.1
+        ./configure
+        make -j 10
+        sudo make install
+    - name: Install latest tinyxml2
+      run: |
+        export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+        wget https://github.com/leethomason/tinyxml2/archive/refs/tags/10.0.0.tar.gz
+        tar -xzf 10.0.0.tar.gz
+        cd tinyxml2-10.0.0
+        mkdir build
+        cd build
+        cmake ..
+        make
+        sudo make install
+    - name: Build libultraship
+      run: |
+        export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+        cmake --no-warn-unused-cli -H. -Bbuild-cmake -GNinja -DCMAKE_BUILD_TYPE:STRING=Release -DMPQ_SUPPORT=FALSE
+        cmake --build build-cmake --config Release --parallel 10
+      env:
+        CC: gcc-10
+        CXX: g++-10
+    - name: Upload build
+      uses: actions/upload-artifact@v3
+      with:
+        name: soh-linux
+        path: build-cmake/src/*.a
+        if-no-files-found: error
   build-windows:
     runs-on: windows-latest
     steps:

CMakeLists.txt

@@ -24,7 +24,7 @@ include(cmake/Utils.cmake)
 set(ADDITIONAL_LIB_INCLUDES "")
 
 # ========= Configuration Options =========
-set(MPQ_SUPPORT FALSE CACHE BOOL "Include StormLib and support using MPQ archives")
+set(MPQ_SUPPORT TRUE CACHE BOOL "Include StormLib and support using MPQ archives")
 if(MPQ_SUPPORT)
     add_compile_definitions(MPQ_SUPPORT)
 endif()