Allow the copy-offload tester tool to be cross-compiled

.dockerignore

@@ -2,10 +2,19 @@
 # Ignore build and test binaries.
 bin/
 testbin/
+rpms/
+crossbin/
 
 # Daemon executables & libraries
 daemons/compute/server/nnf-dm
 daemons/compute/client-c/client
 daemons/compute/client-c/client.a
 daemons/compute/server/server
 daemons/compute/client-go/client-go
+daemons/lib-copy-offload/**/*.[ao]
+daemons/lib-copy-offload/**/tester
+daemons/copy-offload-testing/certs
+
+*.swp
+*.swo
+*~

.gitignore

@@ -11,6 +11,7 @@ nnf-dm
 .version
 config/begin/*
 rpms/
+crossbin/
 
 # Test binary, build with `go test -c`
 *.test

Makefile

@@ -181,6 +181,12 @@ build-copy-offload-with: $(LOCALBIN)
 build-copy-offload-with: fmt vet ## Build standalone copy-offload daemon
 	CGO_ENABLED=0 GOOS=$(GOOS) GOARCH=$(GOARCH) go build -o bin/nnf-copy-offload daemons/copy-offload/cmd/main.go
 
+CROSS_PLATFORM ?= linux/amd64
+.PHONY: build-copy-offload-tester-cross
+build-copy-offload-tester-cross: $(CROSSBIN)
+build-copy-offload-tester-cross: ## Build standalone tester binary for $CROSS_PLATFORM
+	${CONTAINER_TOOL} build --platform=$(CROSS_PLATFORM) --output=type=local,dest=$(CROSSBIN) --no-cache -f daemons/lib-copy-offload/test-tool/Dockerfile.xplatform .
+
 .PHONY: build-copy-offload-docker-local
 build-copy-offload-docker-local: GOARCH = $(shell go env GOARCH)
 build-copy-offload-docker-local: build-copy-offload-docker-with
@@ -296,6 +302,17 @@ clean-rpmbin:
 	  rm -rf $(RPMBIN); \
 	fi
 
+## Location to place cross-compiled tools
+CROSSBIN ?= $(shell pwd)/crossbin
+$(CROSSBIN):
+	mkdir $(CROSSBIN)
+
+.PHONY: clean-crossbin
+clean-crossbin:
+	if [[ -d $(CROSSBIN) ]]; then \
+	  rm -rf $(CROSSBIN); \
+	fi
+
 ## Tool Binaries
 KUSTOMIZE_IMAGE_TAG ?= ./hack/make-kustomization2.sh
 KUSTOMIZE ?= $(LOCALBIN)/kustomize

daemons/lib-copy-offload/Makefile

@@ -15,11 +15,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-CC = /usr/bin/gcc
-AR = /usr/bin/ar
+CC ?= /usr/bin/gcc
+AR ?= /usr/bin/ar
 CFLAGS = -Wall -Werror -g -I/opt/homebrew/include -I/opt/homebrew/opt/curl/include
 LDFLAGS = -lcurl -L/opt/homebrew/lib -L/opt/homebrew/opt/curl/lib
-xLDFLAGS = -lcrypto -lcurl -L/opt/homebrew/lib -L/opt/homebrew/opt/curl/lib
 ARFLAGS = rcs
 
 all: libcopyoffload.a tester

daemons/lib-copy-offload/test-tool/Dockerfile.xplatform

@@ -0,0 +1,28 @@
+# Copyright 2024 Hewlett Packard Enterprise Development LP
+# Other additional copyright holders may be indicated within.
+#
+# The entirety of this work is licensed under the Apache License,
+# Version 2.0 (the "License"); you may not use this file except
+# in compliance with the License.
+#
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM --platform=$BUILDPLATFORM gcc:12.4.0-bookworm AS builder
+
+WORKDIR /workspace
+
+COPY daemons/lib-copy-offload daemons/lib-copy-offload/
+COPY Makefile Makefile
+
+RUN CC=gcc make -C ./daemons/lib-copy-offload tester
+
+FROM scratch AS artifacts
+COPY --from=builder /workspace/daemons/lib-copy-offload/tester /