make: allow using a development version of Go, with a warning (#2260)

Makefile

@@ -1,5 +1,8 @@
 include mk/platform.mk
 
+BUILD_REQUIRE_GO_MAJOR ?= 1
+BUILD_REQUIRE_GO_MINOR ?= 20
+
 BUILD_CODENAME ?= alphaga
 
 CROWDSEC_FOLDER = ./cmd/crowdsec

mk/goversion.mk

@@ -1,7 +1,4 @@
 
-BUILD_REQUIRE_GO_MAJOR ?= 1
-BUILD_REQUIRE_GO_MINOR ?= 20
-
 BUILD_GOVERSION = $(subst go,,$(shell go env GOVERSION))
 
 go_major_minor = $(subst ., ,$(BUILD_GOVERSION))
@@ -10,8 +7,19 @@ GO_MINOR_VERSION = $(word 2, $(go_major_minor))
 
 GO_VERSION_VALIDATION_ERR_MSG = Golang version ($(BUILD_GOVERSION)) is not supported, please use at least $(BUILD_REQUIRE_GO_MAJOR).$(BUILD_REQUIRE_GO_MINOR)
 
+
 .PHONY: goversion
-goversion:
+goversion: $(if $(findstring devel,$(shell go env GOVERSION)),goversion_devel,goversion_check)
+
+
+.PHONY: goversion_devel
+goversion_devel:
+	$(warning WARNING: You are using a development version of Golang ($(BUILD_GOVERSION)) which is not supported. For production environments, use a stable version (at least $(BUILD_REQUIRE_GO_MAJOR).$(BUILD_REQUIRE_GO_MINOR)))
+	$(info )
+
+
+.PHONY: goversion_check
+goversion_check:
 ifneq ($(OS), Windows_NT)
 	@if [ $(GO_MAJOR_VERSION) -gt $(BUILD_REQUIRE_GO_MAJOR) ]; then \
 		exit 0; \