Build github artifacts using Ninja (#479)

Author: FreeSlave

.github/workflows/build.yml

@@ -52,13 +52,13 @@ jobs:
     - name: Build on Linux
       if: startsWith(matrix.os, 'ubuntu')
       run: |
-        schroot --chroot steamrt_scout_i386 -- cmake -DCMAKE_BUILD_TYPE=Release -DPOLLY=ON -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_INSTALL_PREFIX="$PWD/dist"
+        schroot --chroot steamrt_scout_i386 -- cmake -GNinja -DCMAKE_BUILD_TYPE=Release -DPOLLY=ON -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_INSTALL_PREFIX="$PWD/dist"
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target all
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target install
     - name: Build on Linux with vgui
       if: startsWith(matrix.os, 'ubuntu') && startsWith(matrix.cc, 'gcc')
       run: |
-        schroot --chroot steamrt_scout_i386 -- cmake -DCMAKE_BUILD_TYPE=Release -DPOLLY=ON -B build-vgui -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DUSE_VGUI=ON -DCMAKE_INSTALL_PREFIX="$PWD/dist-vgui"
+        schroot --chroot steamrt_scout_i386 -- cmake -GNinja -DCMAKE_BUILD_TYPE=Release -DPOLLY=ON -B build-vgui -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DUSE_VGUI=ON -DCMAKE_INSTALL_PREFIX="$PWD/dist-vgui"
         cp vgui_support/vgui-dev/lib/vgui.so build-vgui/cl_dll
         schroot --chroot steamrt_scout_i386 -- cmake --build build-vgui --target all
         schroot --chroot steamrt_scout_i386 -- cmake --build build-vgui --target install

.github/workflows/manual.yml

@@ -67,7 +67,7 @@ jobs:
     - name: Build on Linux
       if: startsWith(matrix.os, 'ubuntu')
       run: |
-        schroot --chroot steamrt_scout_i386 -- cmake -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_BUILD_TYPE=${{ github.event.inputs.buildtype }} -DCMAKE_INSTALL_PREFIX="$PWD/dist" -DUSE_VGUI=${{ github.event.inputs.usevgui }}
+        schroot --chroot steamrt_scout_i386 -- cmake -GNinja -B build -S . -DCMAKE_EXE_LINKER_FLAGS="-Wl,--no-undefined" -DCMAKE_BUILD_TYPE=${{ github.event.inputs.buildtype }} -DCMAKE_INSTALL_PREFIX="$PWD/dist" -DUSE_VGUI=${{ github.event.inputs.usevgui }}
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target all
         schroot --chroot steamrt_scout_i386 -- cmake --build build --target install