# It's necessary to set this because some environments don't link sh -> bash.
SHELL := /bin/bash

# We don't need make's built-in rules.
MAKEFLAGS += --no-builtin-rules
.SUFFIXES:

# Constants used throughout.
.EXPORT_ALL_VARIABLES:
OUT_DIR ?= _output
BIN_DIR := $(OUT_DIR)/bin
PRJ_SRC_PATH := github.com/baidu/easyfaas
GENERATED_FILE_PREFIX := zz_generated.

# Metadata for driving the build lives here.
META_DIR := .make

# This controls the verbosity of the build.  Higher numbers mean more output.
KUN_VERBOSE ?= 1

define ALL_HELP_INFO
# Build code.
#
# Args:
#   WHAT: Directory names to build.  If any of these directories has a 'main'
#     package, the build will produce executable files under $(OUT_DIR)/go/bin.
#     If not specified, "everything" will be built.
#   GOFLAGS: Extra flags to pass to 'go' when building.
#   GOLDFLAGS: Extra linking flags passed to 'go' when building.
#   GOGCFLAGS: Additional go compile flags passed to 'go' when building.
#
# Example:
#   make
#   make all
#   make all WHAT=cmd/funclet GOFLAGS=-v
#   make all GOGCFLAGS="-N -l"
#     Note: Use the -N -l options to disable compiler optimizations an inlining.
#           Using these build options allows you to subsequently use source
#           debugging tools like delve.
endef
.PHONY: all
ifeq ($(PRINT_HELP),y)
all:
	@echo "$$ALL_HELP_INFO"
else
all: # generated_files
	env bash build/make-rules/build.sh $(WHAT)
endif

define CLEAN_HELP_INFO
# Remove all build artifacts.
#
# Example:
#   make clean
#
# TODO(thockin): call clean_generated when we stop committing generated code.
endef
.PHONY: clean
ifeq ($(PRINT_HELP),y)
clean:
	@echo "$$CLEAN_HELP_INFO"
else
clean: # clean_meta
	env bash build/make-clean.sh
	rm -rf $(OUT_DIR)
endif

define CHECK_TEST_HELP_INFO
# Build and run tests.
#
# Args:
#   WHAT: Directory names to test.  All *_test.go files under these
#     directories will be run.  If not specified, "everything" will be tested.
#   TESTS: Same as WHAT.
#   KUBE_COVER: Whether to run tests with code coverage. Set to 'y' to enable coverage collection.
#   GOFLAGS: Extra flags to pass to 'go' when building.
#   GOLDFLAGS: Extra linking flags to pass to 'go' when building.
#   GOGCFLAGS: Additional go compile flags passed to 'go' when building.
#
# Example:
#   make check
#   make test
#   make check WHAT=./pkg/kubelet GOFLAGS=-v
endef
.PHONY: check test
ifeq ($(PRINT_HELP),y)
check test:
	@echo "$$CHECK_TEST_HELP_INFO"
else
check test: #generated_files
	build/make-rules/test.sh $(WHAT) $(TESTS)
endif