Unknown target is needed

Author: alexhulbert

.github/workflows/reproducible_verify.yaml

@@ -16,14 +16,14 @@ jobs:
           export SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct)
 
           RUSTFLAGS="$REPRO_FLAGS" CARGO_INCREMENTAL=0 LC_ALL=C TZ=UTC \
-          cargo build --release --locked -p op-rbuilder
-          mv target/release/op-rbuilder build1
+          cargo build --release --locked -p op-rbuilder --target x86_64-unknown-linux-gnu
+          mv target/x86_64-unknown-linux-gnu/release/op-rbuilder build1
 
           cargo clean
 
           RUSTFLAGS="$REPRO_FLAGS" CARGO_INCREMENTAL=0 LC_ALL=C TZ=UTC \
-          cargo build --release --locked -p op-rbuilder
-          mv target/release/op-rbuilder build2
+          cargo build --release --locked -p op-rbuilder --target x86_64-unknown-linux-gnu
+          mv target/x86_64-unknown-linux-gnu/release/op-rbuilder build2
 
           if cmp -s build1 build2; then
             echo "✅ Builds are reproducible"

Dockerfile

@@ -82,11 +82,11 @@ ARG FEATURES
 WORKDIR /app
 COPY . .
 RUN SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct) \
-    RUSTFLAGS="--C target-feature=+crt-static -C link-arg=-static-libgcc -C link-arg=-Wl,--build-id=none -C metadata='' --remap-path-prefix=/app=." \
+    RUSTFLAGS="-C target-feature=+crt-static -C link-arg=-static-libgcc -C link-arg=-Wl,--build-id=none -C metadata='' --remap-path-prefix=/app=." \
     CARGO_INCREMENTAL=0 \
     LC_ALL=C \
     TZ=UTC \
-    cargo build --release --locked --features="$FEATURES" --package=${RBUILDER_BIN}
+    cargo build --release --locked --features="$FEATURES" --package=${RBUILDER_BIN} --target x86_64-unknown-linux-gnu
 
 # Runtime container for rbuilder
 FROM gcr.io/distroless/cc-debian12 AS rbuilder-runtime
@@ -99,5 +99,5 @@ ENTRYPOINT ["/app/rbuilder"]
 FROM gcr.io/distroless/cc-debian12 AS rbuilder-reproducible-runtime
 ARG RBUILDER_BIN
 WORKDIR /app
-COPY --from=rbuilder-reproducible /app/target/release/${RBUILDER_BIN} /app/rbuilder
+COPY --from=rbuilder-reproducible /app/target/x86_64-unknown-linux-gnu/release/${RBUILDER_BIN} /app/rbuilder
 ENTRYPOINT ["/app/rbuilder"]

Makefile

@@ -58,7 +58,7 @@ build-reproducible: ## Build the reth binary into `target` directory with reprod
 	CARGO_INCREMENTAL=${CARGO_INCREMENTAL_VAL} \
 	LC_ALL=${LOCALE_VAL} \
 	TZ=${TZ_VAL} \
-	cargo build -p op-rbuilder --bin op-rbuilder --features "$(FEATURES)" --profile "release" --locked --features "$(FEATURES)"
+	cargo build -p op-rbuilder --bin op-rbuilder --features "$(FEATURES)" --profile "release" --locked --features "$(FEATURES)" --target x86_64-unknown-linux-gnu
 
 .PHONY: tdx-quote-provider
 tdx-quote-provider: ## Build tdx-quote-provider (debug version)