fixes attribution generation for cgo projects

Common.mk

@@ -630,7 +630,7 @@ $(OUTPUT_DIR)/%ttribution/go-license.csv: BINARY_TARGET=$(if $(filter .,$(*D)),,
 $(OUTPUT_DIR)/%ttribution/go-license.csv: GO_MOD_PATH=$(if $(BINARY_TARGET),$(GO_MOD_TARGET_FOR_BINARY_$(call TO_UPPER,$(BINARY_TARGET))),$(word 1,$(UNIQ_GO_MOD_PATHS)))
 $(OUTPUT_DIR)/%ttribution/go-license.csv: LICENSE_PACKAGE_FILTER=$(GO_MOD_$(subst /,_,$(GO_MOD_PATH))_LICENSE_PACKAGE_FILTER)
 $(OUTPUT_DIR)/%ttribution/go-license.csv: $$(call GO_MOD_DOWNLOAD_TARGET_FROM_GO_MOD_PATH,$$(GO_MOD_PATH)) | ensure-jq $$(ENABLE_LOGGING)
-	@$(BASE_DIRECTORY)/build/lib/gather_licenses.sh $(REPO) $(MAKE_ROOT)/$(OUTPUT_DIR)/$(BINARY_TARGET) "$(LICENSE_PACKAGE_FILTER)" $(GO_MOD_PATH) $(GOLANG_VERSION) $(LICENSE_THRESHOLD)
+	@$(BASE_DIRECTORY)/build/lib/gather_licenses.sh $(REPO) $(MAKE_ROOT)/$(OUTPUT_DIR)/$(BINARY_TARGET) "$(LICENSE_PACKAGE_FILTER)" $(GO_MOD_PATH) $(GOLANG_VERSION) $(LICENSE_THRESHOLD) $(CGO_ENABLED)
 
 .PHONY: gather-licenses
 gather-licenses: $(GATHER_LICENSES_TARGETS)

build/lib/common.sh

@@ -129,14 +129,16 @@ function build::gather_licenses() {
   local -r patterns=$2
   local -r golang_version=$3
   local -r threshold=$4
-
+  local -r cgo_enabled=$5
+
   # Force deps to only be pulled form vendor directories
   # this is important in a couple cases where license files
   # have to be manually created
   export GOFLAGS=-mod=vendor
   # force platform to be linux to ensure all deps are picked up
   export GOOS=linux 
   export GOARCH=amd64 
+  export CGO_ENABLED=$cgo_enabled
 
   build::common::use_go_version "$golang_version"
 
@@ -156,7 +158,7 @@ function build::gather_licenses() {
 
   # go-licenses can be a bit noisy with its output and lot of it can be confusing 
   # the following messages are safe to ignore since we do not need the license url for our process
-  NOISY_MESSAGES="cannot determine URL for|Error discovering license URL|unsupported package host|contains non-Go code|has empty version|vendor.*\.(h|s)$"
+  NOISY_MESSAGES="cannot determine URL for|Error discovering license URL|unsupported package host|contains non-Go code|has empty version|\.(h|s|c)$"
 
   build::common::echo_and_run go-licenses save --confidence_threshold $threshold --force $patterns --save_path "${outputdir}/LICENSES" 2> >(grep -vE "$NOISY_MESSAGES")
 

build/lib/gather_licenses.sh

@@ -23,9 +23,10 @@ PACKAGE_FILTER="$3"
 REPO_SUBPATH="${4:-}"
 GOLANG_VERSION="${5:-}"
 LICENSE_THRESHOLD="${6:-}"
+CGO_ENABLED="${7:-}"
 
 SCRIPT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
 source "${SCRIPT_ROOT}/common.sh"
 
 cd $REPO/$REPO_SUBPATH
-build::gather_licenses $OUTPUT_DIR "$PACKAGE_FILTER" "$GOLANG_VERSION" "$LICENSE_THRESHOLD"
+build::gather_licenses $OUTPUT_DIR "$PACKAGE_FILTER" "$GOLANG_VERSION" "$LICENSE_THRESHOLD" "$CGO_ENABLED"