Workflow fixes

Author: Andreas-Krebbel

.github/toolchains/gcc-s390x-linux-gnu.cmake

@@ -0,0 +1,4 @@
+set(CMAKE_SYSTEM_PROCESSOR s390x)
+set(triple s390x-linux-gnu)
+
+include(${CMAKE_CURRENT_LIST_DIR}/gcc.cmake)

.github/workflows/cross-s390x.yml

@@ -19,7 +19,7 @@ jobs:
       if: ${{ matrix.sys.compiler == 'gcc' }}
       run: |
         sudo apt-get update || exit 1
-        sudo apt-get --no-install-suggests --no-install-recommends install g++-${{ matrix.sys.version }}-${{ matrix.target.dir }} g++-${{ matrix.sys.version }}-multilib || exit 1
+        sudo apt-get -y --no-install-suggests --no-install-recommends install g++-${{ matrix.sys.version }}-${{ matrix.target.dir }} g++-${{ matrix.sys.version }}-multilib cmake || exit 1
         sudo update-alternatives --remove-all ${{ matrix.target.dir }}-gcc || true
         sudo update-alternatives --remove-all ${{ matrix.target.dir }}-g++ || true
         sudo update-alternatives --install /usr/bin/${{ matrix.target.dir }}-gcc ${{ matrix.target.dir }}-gcc /usr/bin/${{ matrix.target.dir }}-gcc-${{ matrix.sys.version }} 20