if [ ! -f contrib/depends/sdk-sources/MacOSX${{ matrix.toolchain.osx_sdk }}.sdk.tar.gz ]; then curl --location --fail https://bitcoincore.org/depends-sources/sdks/MacOSX${{ matrix.toolchain.osx_sdk }}.sdk.tar.gz -o contrib/depends/sdk-sources/MacOSX${{ matrix.toolchain.osx_sdk }}.sdk.tar.gz; fi
if [ -f contrib/depends/sdk-sources/MacOSX${{ matrix.toolchain.osx_sdk }}.sdk.tar.gz ]; then tar -C contrib/depends/SDKs -xf contrib/depends/sdk-sources/MacOSX${{ matrix.toolchain.osx_sdk }}.sdk.tar.gz; fi