Try

.github/workflows/build.yml

@@ -68,24 +68,14 @@ jobs:
         run: |
           cargo install cross
 
-      - name: Setup cross-compilation environment
-        if: runner.os == 'Linux'
-        run: |
-          if [ "${{ matrix.arch }}" == "aarch64" ]; then
-            echo "PKG_CONFIG_PATH=/usr/lib/aarch64-linux-gnu/pkgconfig" >> $GITHUB_ENV
-          else
-            echo "PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig" >> $GITHUB_ENV
-          fi
-          echo "PKG_CONFIG_ALLOW_CROSS=1" >> $GITHUB_ENV
-
       - name: Build Release (Linux)
         if: runner.os == 'Linux'
         run: |
           sudo apt-get install -y gcc-${{ matrix.arch }}-linux-gnu g++-${{ matrix.arch }}-linux-gnu
           cross build --target ${{ matrix.arch }}-unknown-linux-gnu --release
         env:
           PKG_CONFIG_ALLOW_CROSS: 1
-          PKG_CONFIG_PATH: /usr/lib/${{ matrix.arch }}-linux-gnu/pkgconfig
+          PKG_CONFIG_SYSROOT_DIR: /
         working-directory: ./psst-gui
 
       - name: Build Release (macOS)