common.mk

# Copyright 2020 The Kubernetes Authors.
#
# 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.

include $(REPO_ROOT)/versions.mk

# Ensure Make is run with bash shell as some syntax below is bash-specific
SHELL:=bash
.ONESHELL:
# No spaces allowed in linux SHELLFLAGS, so omitting -o pipefail
.SHELLFLAGS := -euc
.DELETE_ON_ERROR:
MAKEFLAGS += --no-builtin-rules

TOOLS_DIR := $(REPO_ROOT)/hack/tools
TOOLS_DIR_DEPS := $(TOOLS_DIR)/go.sum $(TOOLS_DIR)/go.mod $(TOOLS_DIR)/Makefile
TOOLS_BIN_DIR := $(TOOLS_DIR)/bin
UID := $(shell id -u)
GID := $(shell id -g)

rwildcard=$(foreach d,$(wildcard $(1:=/*)),$(call rwildcard,$d,$2) $(filter $(subst *,%,$2),$d))

# Hosts running SELinux need :z added to volume mounts
SELINUX_ENABLED := $(shell cat /sys/fs/selinux/enforce 2> /dev/null || echo 0)

ifeq ($(SELINUX_ENABLED),1)
  DOCKER_VOL_OPTS?=:z
endif

.DEFAULT_GOAL:=help

# Use GOPROXY environment variable if set
GOPROXY := $(shell go env GOPROXY)
ifeq ($(GOPROXY),)
GOPROXY := https://proxy.golang.org
endif
export GOPROXY

$(TOOLS_BIN_DIR)/%: $(TOOLS_DIR_DEPS)
	make -C $(TOOLS_DIR) $(subst $(TOOLS_DIR)/,,$@)

##@ Help
## --------------------------------------
## Help
## --------------------------------------

help:  ## Display this help
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)