- $(eval nnuedownloadurl := https://tests.stockfishchess.org/api/nn/$(nnuenet))
- $(eval curl_or_wget := $(shell if hash curl 2>/dev/null; then echo "curl -sL"; elif hash wget 2>/dev/null; then echo "wget -qO-"; fi))
- @if test -f "$(nnuenet)"; then echo "Already available."; else echo "Downloading $(nnuedownloadurl)"; $(curl_or_wget) $(nnuedownloadurl) > $(nnuenet); fi
+ $(eval nnuedownloadurl1 := https://tests.stockfishchess.org/api/nn/$(nnuenet))
+ $(eval nnuedownloadurl2 := https://github.com/official-stockfish/networks/raw/master/$(nnuenet))
+ $(eval curl_or_wget := $(shell if hash curl 2>/dev/null; then echo "curl -skL"; elif hash wget 2>/dev/null; then echo "wget -qO-"; fi))
+ @if [ "x$(curl_or_wget)" = "x" ]; then \
+ echo "Neither curl nor wget is installed. Install one of these tools unless the net has been downloaded manually"; \
+ fi
+ $(eval shasum_command := $(shell if hash shasum 2>/dev/null; then echo "shasum -a 256 "; elif hash sha256sum 2>/dev/null; then echo "sha256sum "; fi))
+ @if [ "x$(shasum_command)" = "x" ]; then \
+ echo "shasum / sha256sum not found, skipping net validation"; \
+ fi
+ @for nnuedownloadurl in "$(nnuedownloadurl1)" "$(nnuedownloadurl2)"; do \
+ if test -f "$(nnuenet)"; then \
+ echo "$(nnuenet) available."; \
+ else \
+ if [ "x$(curl_or_wget)" != "x" ]; then \
+ echo "Downloading $${nnuedownloadurl}"; $(curl_or_wget) $${nnuedownloadurl} > $(nnuenet);\
+ else \
+ echo "No net found and download not possible"; exit 1;\
+ fi; \
+ fi; \
+ if [ "x$(shasum_command)" != "x" ]; then \
+ if [ "$(nnuenet)" != "nn-"`$(shasum_command) $(nnuenet) | cut -c1-12`".nnue" ]; then \
+ echo "Removing failed download"; rm -f $(nnuenet); \
+ else \
+ echo "Network validated"; break; \
+ fi; \
+ fi; \
+ done
+ @if ! test -f "$(nnuenet)"; then \
+ echo "Failed to download $(nnuenet)."; \
+ fi