mirror of
https://github.com/k3s-io/kubernetes.git
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ab703e0406
In this case, the 'clean' step would nuke the metadata files, but they have already been read, so in-memory state is fine. This triggered a couple of pathological conditions that would not normally be hit. This commit fills in those nodes in the DAG, even though they are not directly needed in most builds. Also fix some whitespace for readability.
472 lines
20 KiB
Makefile
472 lines
20 KiB
Makefile
# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Constants used throughout.
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GENERATED_FILE_PREFIX := zz_generated.
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# Code-generation logic.
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#
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# This stuff can be pretty tricky, and there's probably some corner cases that
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# we don't handle well. That said, here's a straightforward test to prove that
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# the most common cases work. Sadly, it is manual.
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#
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# make clean
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# find . -name .make\* | xargs rm -f
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# find . -name zz_generated\* | xargs rm -f
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# # verify `find . -name zz_generated.deepcopy.go | wc -l` is 0
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# # verify `find . -name .make | wc -l` is 0
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#
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# make nonexistent
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# # expect "No rule to make target"
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# # verify `find .make/ -type f | wc -l` has many files
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#
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# make gen_deepcopy
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# # expect deepcopy-gen is built exactly once
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# # expect many files to be regenerated
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# # verify `find . -name zz_generated.deepcopy.go | wc -l` has files
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# make gen_deepcopy
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# # expect nothing to be rebuilt, finish in O(seconds)
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# touch pkg/api/types.go
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# make gen_deepcopy
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# # expect one file to be regenerated
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# make gen_deepcopy
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# # expect nothing to be rebuilt, finish in O(seconds)
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# touch cmd/libs/go2idl/deepcopy-gen/main.go
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# make gen_deepcopy
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# # expect deepcopy-gen is built exactly once
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# # expect many files to be regenerated
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# # verify `find . -name zz_generated.deepcopy.go | wc -l` has files
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# make gen_deepcopy
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# # expect nothing to be rebuilt, finish in O(seconds)
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#
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# make gen_conversion
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# # expect conversion-gen is built exactly once
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# # expect many files to be regenerated
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# # verify `find . -name zz_generated.conversion.go | wc -l` has files
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# make gen_conversion
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# # expect nothing to be rebuilt, finish in O(seconds)
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# touch pkg/api/types.go
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# make gen_conversion
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# # expect one file to be regenerated
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# make gen_conversion
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# # expect nothing to be rebuilt, finish in O(seconds)
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# touch cmd/libs/go2idl/conversion-gen/main.go
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# make gen_conversion
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# # expect conversion-gen is built exactly once
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# # expect many files to be regenerated
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# # verify `find . -name zz_generated.conversion.go | wc -l` has files
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# make gen_conversion
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# # expect nothing to be rebuilt, finish in O(seconds)
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#
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# make all
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# # expect it to build
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#
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# make test
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# # expect it to pass
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#
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# make clean
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# # verify `find . -name zz_generated.deepcopy.go | wc -l` is 0
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# # verify `find . -name .make | wc -l` is 0
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#
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# make all WHAT=cmd/kube-proxy
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# # expect it to build
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#
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# make clean
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# make test WHAT=cmd/kube-proxy
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# # expect it to pass
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# This variable holds a list of every directory that contains Go files in this
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# project. Other rules and variables can use this as a starting point to
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# reduce filesystem accesses.
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ifeq ($(DBG_MAKEFILE),1)
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$(warning ***** finding all *.go dirs)
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endif
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ALL_GO_DIRS := $(shell \
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find . \
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-not \( \
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\( \
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-path ./vendor -o \
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-path ./_\* -o \
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-path ./.\* -o \
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-path ./docs -o \
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-path ./examples \
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\) -prune \
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\) \
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-type f -name \*.go \
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| sed 's|^./||' \
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| xargs -n1 dirname \
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| sort -u \
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)
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# The name of the make metadata file listing Go files.
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GOFILES_META := gofiles.mk
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# Establish a dependency between the deps file and the dir. Whenever a dir
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# changes (files added or removed) the deps file will be considered stale.
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#
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# The variable value was set in $(GOFILES_META) and included as part of the
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# dependency management logic.
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#
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# This is looser than we really need (e.g. we don't really care about non *.go
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# files or even *_test.go files), but this is much easier to represent.
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#
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# Because we 'sinclude' the deps file, it is considered for rebuilding, as part
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# of make's normal evaluation. If it gets rebuilt, make will restart.
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#
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# The '$(eval)' is needed because this has a different RHS for each LHS, and
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# would otherwise produce results that make can't parse.
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$(foreach dir, $(ALL_GO_DIRS), $(eval \
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$(META_DIR)/$(dir)/$(GOFILES_META): $(dir) \
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))
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# How to rebuild a deps file. When make determines that the deps file is stale
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# (see above), it executes this rule, and then re-loads the deps file.
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#
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# This is looser than we really need (e.g. we don't really care about test
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# files), but this is MUCH faster than calling `go list`.
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#
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# We regenerate the output file in order to satisfy make's "newer than" rules,
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# but we only need to rebuild targets if the contents actually changed. That
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# is what the .stamp file represents.
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$(foreach dir, $(ALL_GO_DIRS), \
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$(META_DIR)/$(dir)/$(GOFILES_META)):
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FILES=$$(ls $</*.go | grep --color=never -v $(GENERATED_FILE_PREFIX)); \
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mkdir -p $(@D); \
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echo "gofiles__$< := $$(echo $${FILES})" >$@.tmp; \
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cmp -s $@.tmp $@ || touch $@.stamp; \
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mv $@.tmp $@
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# This is required to fill in the DAG, since some cases (e.g. 'make clean all')
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# will reference the .stamp file when it doesn't exist. We don't need to
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# rebuild it in that case, just keep make happy.
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$(foreach dir, $(ALL_GO_DIRS), \
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$(META_DIR)/$(dir)/$(GOFILES_META).stamp):
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# Include any deps files as additional Makefile rules. This triggers make to
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# consider the deps files for rebuild, which makes the whole
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# dependency-management logic work. 'sinclude' is "silent include" which does
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# not fail if the file does not exist.
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$(foreach dir, $(ALL_GO_DIRS), $(eval \
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sinclude $(META_DIR)/$(dir)/$(GOFILES_META) \
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))
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# Generate a list of all files that have a `+k8s:` comment-tag. This will be
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# used to derive lists of files/dirs for generation tools.
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ifeq ($(DBG_MAKEFILE),1)
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$(warning ***** finding all +k8s: tags)
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endif
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ALL_K8S_TAG_FILES := $(shell \
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find $(ALL_GO_DIRS) -maxdepth 1 -type f -name \*.go \
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| xargs grep --color=never -l '^// *+k8s:' \
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)
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#
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# Deep-copy generation
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#
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# Any package that wants deep-copy functions generated must include a
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# comment-tag in column 0 of one file of the form:
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# // +k8s:deepcopy-gen=<VALUE>
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#
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# The <VALUE> may be one of:
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# generate: generate deep-copy functions into the package
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# register: generate deep-copy functions and register them with a
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# scheme
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# The result file, in each pkg, of deep-copy generation.
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DEEPCOPY_BASENAME := $(GENERATED_FILE_PREFIX)deepcopy
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DEEPCOPY_FILENAME := $(DEEPCOPY_BASENAME).go
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# The tool used to generate deep copies.
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DEEPCOPY_GEN := $(BIN_DIR)/deepcopy-gen
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# Find all the directories that request deep-copy generation.
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ifeq ($(DBG_MAKEFILE),1)
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$(warning ***** finding all +k8s:deepcopy-gen tags)
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endif
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DEEPCOPY_DIRS := $(shell \
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grep --color=never -l '+k8s:deepcopy-gen=' $(ALL_K8S_TAG_FILES) \
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| xargs -n1 dirname \
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| sort -u \
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)
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DEEPCOPY_FILES := $(addsuffix /$(DEEPCOPY_FILENAME), $(DEEPCOPY_DIRS))
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# This rule aggregates the set of files to generate and then generates them all
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# in a single run of the tool.
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.PHONY: gen_deepcopy
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gen_deepcopy: $(DEEPCOPY_FILES)
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if [[ -f $(META_DIR)/$(DEEPCOPY_GEN).todo ]]; then \
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./hack/run-in-gopath.sh $(DEEPCOPY_GEN) \
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-i $$(cat $(META_DIR)/$(DEEPCOPY_GEN).todo | paste -sd, -) \
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--bounding-dirs $(PRJ_SRC_PATH) \
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-O $(DEEPCOPY_BASENAME); \
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fi
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# For each dir in DEEPCOPY_DIRS, this establishes a dependency between the
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# output file and the input files that should trigger a rebuild.
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#
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# Note that this is a deps-only statement, not a full rule (see below). This
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# has to be done in a distinct step because wildcards don't work in static
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# pattern rules.
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#
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# The '$(eval)' is needed because this has a different RHS for each LHS, and
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# would otherwise produce results that make can't parse.
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#
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# We depend on the $(GOFILES_META).stamp to detect when the set of input files
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# has changed. This allows us to detect deleted input files.
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$(foreach dir, $(DEEPCOPY_DIRS), $(eval \
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$(dir)/$(DEEPCOPY_FILENAME): $(META_DIR)/$(dir)/$(GOFILES_META).stamp \
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$(gofiles__$(dir)) \
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))
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# Unilaterally remove any leftovers from previous runs.
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$(shell rm -f $(META_DIR)/$(DEEPCOPY_GEN)*.todo)
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# How to regenerate deep-copy code. This is a little slow to run, so we batch
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# it up and trigger the batch from the 'generated_files' target.
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$(DEEPCOPY_FILES): $(DEEPCOPY_GEN)
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mkdir -p $$(dirname $(META_DIR)/$(DEEPCOPY_GEN))
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echo $(PRJ_SRC_PATH)/$(@D) >> $(META_DIR)/$(DEEPCOPY_GEN).todo
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# This calculates the dependencies for the generator tool, so we only rebuild
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# it when needed. It is PHONY so that it always runs, but it only updates the
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# file if the contents have actually changed. We 'sinclude' this later.
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.PHONY: $(META_DIR)/$(DEEPCOPY_GEN).mk
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$(META_DIR)/$(DEEPCOPY_GEN).mk:
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mkdir -p $(@D); \
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(echo -n "$(DEEPCOPY_GEN): "; \
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DIRECT=$$(go list -e -f '{{.Dir}} {{.Dir}}/*.go' \
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./cmd/libs/go2idl/deepcopy-gen); \
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INDIRECT=$$(go list -e \
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-f '{{range .Deps}}{{.}}{{"\n"}}{{end}}' \
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./cmd/libs/go2idl/deepcopy-gen \
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| grep --color=never "^$(PRJ_SRC_PATH)" \
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| sed 's|^$(PRJ_SRC_PATH)|./|' \
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| xargs go list -e -f '{{.Dir}} {{.Dir}}/*.go'); \
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echo $$DIRECT $$INDIRECT \
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| sed 's/ / \\=,/g' \
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| tr '=,' '\n\t'; \
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) | sed "s|$$(pwd -P)/||" > $@.tmp; \
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cmp -s $@.tmp $@ || cat $@.tmp > $@ && rm -f $@.tmp
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# Include dependency info for the generator tool. This will cause the rule of
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# the same name to be considered and if it is updated, make will restart.
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sinclude $(META_DIR)/$(DEEPCOPY_GEN).mk
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# How to build the generator tool. The deps for this are defined in
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# the $(DEEPCOPY_GEN).mk, above.
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#
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# A word on the need to touch: This rule might trigger if, for example, a
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# non-Go file was added or deleted from a directory on which this depends.
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# This target needs to be reconsidered, but Go realizes it doesn't actually
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# have to be rebuilt. In that case, make will forever see the dependency as
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# newer than the binary, and try to rebuild it over and over. So we touch it,
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# and make is happy.
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$(DEEPCOPY_GEN):
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hack/make-rules/build.sh cmd/libs/go2idl/deepcopy-gen
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touch $@
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#
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# Conversion generation
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#
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# Any package that wants conversion functions generated must include one or
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# more comment-tags in any .go file, in column 0, of the form:
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# // +k8s:conversion-gen=<CONVERSION_TARGET_DIR>
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#
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# The CONVERSION_TARGET_DIR is a project-local path to another directory which
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# should be considered when evaluating peer types for conversions. Types which
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# are found in the source package (where conversions are being generated)
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# but do not have a peer in one of the target directories will not have
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# conversions generated.
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#
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# TODO: it might be better in the long term to make peer-types explicit in the
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# IDL.
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# The result file, in each pkg, of conversion generation.
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CONVERSION_BASENAME := $(GENERATED_FILE_PREFIX)conversion
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CONVERSION_FILENAME := $(CONVERSION_BASENAME).go
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# The tool used to generate conversions.
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CONVERSION_GEN := $(BIN_DIR)/conversion-gen
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# The name of the make metadata file controlling conversions.
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CONVERSIONS_META := conversions.mk
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# All directories that request any form of conversion generation.
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ifeq ($(DBG_MAKEFILE),1)
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$(warning ***** finding all +k8s:conversion-gen tags)
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endif
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CONVERSION_DIRS := $(shell \
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grep --color=never '^// *+k8s:conversion-gen=' $(ALL_K8S_TAG_FILES) \
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| cut -f1 -d: \
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| xargs -n1 dirname \
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| sort -u \
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)
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CONVERSION_FILES := $(addsuffix /$(CONVERSION_FILENAME), $(CONVERSION_DIRS))
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# This rule aggregates the set of files to generate and then generates them all
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# in a single run of the tool.
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.PHONY: gen_conversion
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gen_conversion: $(CONVERSION_FILES)
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if [[ -f $(META_DIR)/$(CONVERSION_GEN).todo ]]; then \
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./hack/run-in-gopath.sh $(CONVERSION_GEN) \
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-i $$(cat $(META_DIR)/$(CONVERSION_GEN).todo | paste -sd, -) \
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-O $(CONVERSION_BASENAME); \
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fi
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# Establish a dependency between the deps file and the dir. Whenever a dir
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# changes (files added or removed) the deps file will be considered stale.
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#
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# This is looser than we really need (e.g. we don't really care about non *.go
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# files or even *_test.go files), but this is much easier to represent.
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#
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# Because we 'sinclude' the deps file, it is considered for rebuilding, as part
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# of make's normal evaluation. If it gets rebuilt, make will restart.
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#
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# The '$(eval)' is needed because this has a different RHS for each LHS, and
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# would otherwise produce results that make can't parse.
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$(foreach dir, $(CONVERSION_DIRS), $(eval \
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$(META_DIR)/$(dir)/$(CONVERSIONS_META): $(dir) \
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))
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# How to rebuild a deps file. When make determines that the deps file is stale
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# (see above), it executes this rule, and then re-loads the deps file.
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|
#
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|
# This is looser than we really need (e.g. we don't really care about test
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# files), but this is MUCH faster than calling `go list`.
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#
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# We regenerate the output file in order to satisfy make's "newer than" rules,
|
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# but we only need to rebuild targets if the contents actually changed. That
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# is what the .stamp file represents.
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$(foreach dir, $(CONVERSION_DIRS), \
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$(META_DIR)/$(dir)/$(CONVERSIONS_META)):
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TAGS=$$(grep --color=never -h '^// *+k8s:conversion-gen=' $</*.go \
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| cut -f2- -d= \
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| sed 's|$(PRJ_SRC_PATH)/||'); \
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mkdir -p $(@D); \
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echo "conversions__$< := $$(echo $${TAGS})" >$@.tmp; \
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cmp -s $@.tmp $@ || touch $@.stamp; \
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mv $@.tmp $@
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# Include any deps files as additional Makefile rules. This triggers make to
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# consider the deps files for rebuild, which makes the whole
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# dependency-management logic work. 'sinclude' is "silent include" which does
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|
# not fail if the file does not exist.
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$(foreach dir, $(CONVERSION_DIRS), $(eval \
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sinclude $(META_DIR)/$(dir)/$(CONVERSIONS_META) \
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))
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# For each dir in CONVERSION_DIRS, this establishes a dependency between the
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|
# output file and the input files that should trigger a rebuild.
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#
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|
# The variable value was set in $(GOFILES_META) and included as part of the
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|
# dependency management logic.
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|
#
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|
# Note that this is a deps-only statement, not a full rule (see below). This
|
|
# has to be done in a distinct step because wildcards don't work in static
|
|
# pattern rules.
|
|
#
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|
# The '$(eval)' is needed because this has a different RHS for each LHS, and
|
|
# would otherwise produce results that make can't parse.
|
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#
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|
# We depend on the $(GOFILES_META).stamp to detect when the set of input files
|
|
# has changed. This allows us to detect deleted input files.
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|
$(foreach dir, $(CONVERSION_DIRS), $(eval \
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$(dir)/$(CONVERSION_FILENAME): $(META_DIR)/$(dir)/$(GOFILES_META).stamp \
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$(gofiles__$(dir)) \
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))
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# For each dir in CONVERSION_DIRS, for each target in $(conversions__$(dir)),
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# this establishes a dependency between the output file and the input files
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# that should trigger a rebuild.
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#
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# The variable value was set in $(GOFILES_META) and included as part of the
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|
# dependency management logic.
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|
#
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|
# Note that this is a deps-only statement, not a full rule (see below). This
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|
# has to be done in a distinct step because wildcards don't work in static
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# pattern rules.
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#
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# The '$(eval)' is needed because this has a different RHS for each LHS, and
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# would otherwise produce results that make can't parse.
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#
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# We depend on the $(GOFILES_META).stamp to detect when the set of input files
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# has changed. This allows us to detect deleted input files.
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$(foreach dir, $(CONVERSION_DIRS), \
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$(foreach tgt, $(conversions__$(dir)), $(eval \
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$(dir)/$(CONVERSION_FILENAME): $(META_DIR)/$(tgt)/$(GOFILES_META).stamp \
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$(gofiles__$(tgt)) \
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)) \
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)
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# Unilaterally remove any leftovers from previous runs.
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$(shell rm -f $(META_DIR)/$(CONVERSION_GEN)*.todo)
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# How to regenerate conversion code. This is a little slow to run, so we batch
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# it up and trigger the batch from the 'generated_files' target.
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$(CONVERSION_FILES): $(CONVERSION_GEN)
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mkdir -p $$(dirname $(META_DIR)/$(CONVERSION_GEN))
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echo $(PRJ_SRC_PATH)/$(@D) >> $(META_DIR)/$(CONVERSION_GEN).todo
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|
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# This calculates the dependencies for the generator tool, so we only rebuild
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|
# it when needed. It is PHONY so that it always runs, but it only updates the
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# file if the contents have actually changed. We 'sinclude' this later.
|
|
.PHONY: $(META_DIR)/$(CONVERSION_GEN).mk
|
|
$(META_DIR)/$(CONVERSION_GEN).mk:
|
|
mkdir -p $(@D); \
|
|
(echo -n "$(CONVERSION_GEN): "; \
|
|
DIRECT=$$(go list -e -f '{{.Dir}} {{.Dir}}/*.go' \
|
|
./cmd/libs/go2idl/conversion-gen); \
|
|
INDIRECT=$$(go list -e \
|
|
-f '{{range .Deps}}{{.}}{{"\n"}}{{end}}' \
|
|
./cmd/libs/go2idl/conversion-gen \
|
|
| grep --color=never "^$(PRJ_SRC_PATH)" \
|
|
| sed 's|^$(PRJ_SRC_PATH)|./|' \
|
|
| xargs go list -e -f '{{.Dir}} {{.Dir}}/*.go'); \
|
|
echo $$DIRECT $$INDIRECT \
|
|
| sed 's/ / \\=,/g' \
|
|
| tr '=,' '\n\t'; \
|
|
) | sed "s|$$(pwd -P)/||" > $@.tmp; \
|
|
cmp -s $@.tmp $@ || cat $@.tmp > $@ && rm -f $@.tmp
|
|
|
|
# Include dependency info for the generator tool. This will cause the rule of
|
|
# the same name to be considered and if it is updated, make will restart.
|
|
sinclude $(META_DIR)/$(CONVERSION_GEN).mk
|
|
|
|
# How to build the generator tool. The deps for this are defined in
|
|
# the $(CONVERSION_GEN).mk, above.
|
|
#
|
|
# A word on the need to touch: This rule might trigger if, for example, a
|
|
# non-Go file was added or deleted from a directory on which this depends.
|
|
# This target needs to be reconsidered, but Go realizes it doesn't actually
|
|
# have to be rebuilt. In that case, make will forever see the dependency as
|
|
# newer than the binary, and try to rebuild it over and over. So we touch it,
|
|
# and make is happy.
|
|
$(CONVERSION_GEN):
|
|
hack/make-rules/build.sh cmd/libs/go2idl/conversion-gen
|
|
touch $@
|
|
|
|
# This rule collects all the generated file sets into a single dep, which is
|
|
# defined BELOW the *_FILES variables and leaves higher-level rules clean.
|
|
# Top-level rules should depend on this to ensure generated files are rebuilt.
|
|
.PHONY: generated_files
|
|
generated_files: gen_deepcopy gen_conversion
|
|
|
|
# Remove all auto-generated artifacts.
|
|
#
|
|
# Example:
|
|
# make clean_generated
|
|
.PHONY: clean_generated
|
|
clean_generated:
|
|
find . -type f -name $(GENERATED_FILE_PREFIX)\* | xargs rm -f
|