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feat(makefile): simplify validate-go-version (#3147) 

Since Go 1.21 the go toolchain validates strictly the "go" version
directive in go.mod, and downloads and uses the requested toolchain if
necessary. See https://go.dev/doc/toolchain

So we can just run "go list" to tell the Go toolchain to validate our
build environment according to go.mod.

To extract the "go" directive version from go.mod (used to select the
Docker build image) we also use "go list".
This commit is contained in:
Olivier Mengué 2025-10-28 09:13:35 +01:00 committed by GitHub
parent 31b275f580
commit f950dc9942
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1 changed files with 7 additions and 16 deletions
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23
Makefile
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@ -36,13 +36,12 @@ REPOSITORY ?= oauth2-proxy
DATE := $(shell date +"%Y%m%d")
.NOTPARALLEL:
GO_MAJOR_VERSION = $(shell $(GO) version | cut -c 14- | cut -d' ' -f1 | cut -d'.' -f1)
GO_MINOR_VERSION = $(shell $(GO) version | cut -c 14- | cut -d' ' -f1 | cut -d'.' -f2)
# The go version in go.mod used for the Docker build toolchain, without the patch
GO_MOD_VERSION_MINOR := $(shell $(GO) list -f '{{printf "%.4s" .Module.GoVersion}}' )
GO_MOD_VERSION = $(shell sed -En 's/^go ([[:digit:]]\.[[:digit:]]+)\.[[:digit:]]+/\1/p' go.mod)
MINIMUM_SUPPORTED_GO_MAJOR_VERSION = $(shell echo ${GO_MOD_VERSION} | cut -d' ' -f1 | cut -d'.' -f1)
MINIMUM_SUPPORTED_GO_MINOR_VERSION = $(shell echo ${GO_MOD_VERSION} | cut -d' ' -f1 | cut -d'.' -f2)
GO_VERSION_VALIDATION_ERR_MSG = Golang version is not supported, please update to at least $(MINIMUM_SUPPORTED_GO_MAJOR_VERSION).$(MINIMUM_SUPPORTED_GO_MINOR_VERSION)
# From go1.21 go will transparently download the toolchain declared in go.mod. https://go.dev/doc/toolchain
# We don't need to keep this message updated: the important info is in go.mod.
GO_VERSION_VALIDATION_ERR_MSG = Golang version is not supported, please update to at least go1.21
ifeq ($(COVER),true)
TESTCOVER ?= -coverprofile c.out
@ -56,7 +55,7 @@ build: validate-go-version clean $(BINARY) ## Build and create oauth2-proxy bina
$(BINARY):
CGO_ENABLED=0 $(GO) build -a -installsuffix cgo -ldflags="-X github.com/oauth2-proxy/oauth2-proxy/v7/pkg/version.VERSION=${VERSION}" -o $@ github.com/oauth2-proxy/oauth2-proxy/v7
DOCKER_BUILDX_COMMON_ARGS ?= --build-arg BUILD_IMAGE=docker.io/library/golang:${GO_MOD_VERSION}-bookworm --build-arg VERSION=${VERSION}
DOCKER_BUILDX_COMMON_ARGS ?= --build-arg BUILD_IMAGE=docker.io/library/golang:$(GO_MOD_VERSION_MINOR)-bookworm --build-arg VERSION=$(VERSION)
DOCKER_BUILD_PLATFORM ?= linux/amd64,linux/arm64,linux/ppc64le,linux/arm/v7,linux/s390x
DOCKER_BUILD_RUNTIME_IMAGE ?= gcr.io/distroless/static:nonroot
@ -158,15 +157,7 @@ lint: validate-go-version ## Lint all files using golangci-lint
.PHONY: validate-go-version
validate-go-version: ## Validate Go environment requirements
@if [ $(GO_MAJOR_VERSION) -gt $(MINIMUM_SUPPORTED_GO_MAJOR_VERSION) ]; then \
exit 0 ;\
elif [ $(GO_MAJOR_VERSION) -lt $(MINIMUM_SUPPORTED_GO_MAJOR_VERSION) ]; then \
echo '$(GO_VERSION_VALIDATION_ERR_MSG)';\
exit 1; \
elif [ $(GO_MINOR_VERSION) -lt $(MINIMUM_SUPPORTED_GO_MINOR_VERSION) ] ; then \
echo '$(GO_VERSION_VALIDATION_ERR_MSG)';\
exit 1; \
fi
@$(GO) list . >/dev/null || { echo '$(GO_VERSION_VALIDATION_ERR_MSG)'; exit 1; }
# local-env can be used to interact with the local development environment
# eg: