[SECCOMP-31582] - enable CGO on promu

Makefile.common

@@ -153,7 +153,7 @@ common-test-short: $(GOTEST_DIR)
 .PHONY: common-test
 common-test: $(GOTEST_DIR)
 	@echo ">> running all tests"
-	CGO_ENABLED=1 GOEXPERIMENT=boringcrypto $(GOTEST) $(test-flags) $(GOOPTS) $(pkgs)
+	$(GOTEST) $(test-flags) $(GOOPTS) $(pkgs)
 
 $(GOTEST_DIR):
 	@mkdir -p $@
@@ -201,7 +201,7 @@ common-unused:
 common-build: promu
 	@echo ">> building binaries"
 	@env
-	CGO_ENABLED=1 GOEXPERIMENT=boringcrypto go build -o postgres_exporter .
+	$(PROMU) build --prefix $(PREFIX) $(PROMU_BINARIES)
 
 .PHONY: common-tarball
 common-tarball: promu
@@ -240,6 +240,7 @@ promu: $(PROMU)
 $(PROMU):
 	$(eval PROMU_TMP := $(shell mktemp -d))
 	curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP)
+	sed -i '/^go:/a \ \ cgo: true' $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/.promu.yml
 	mkdir -p $(FIRST_GOPATH)/bin
 	cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu
 	rm -r $(PROMU_TMP)