Makefile - third_party/shuttle/sky130/mpw-001/slot-026 - Git at Google

 # SPDX-FileCopyrightText: 2020 Efabless Corporation
 #
 # 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.
 #
 # SPDX-License-Identifier: Apache-2.0

 # cannot commit files larger than 100 MB to GitHub
 FILE_SIZE_LIMIT_MB = 100
 LARGE_FILES := $(shell find ./gds -type f -name "*.gds")
 LARGE_FILES += $(shell find . -type f -size +$(FILE_SIZE_LIMIT_MB)M -not -path "./.git/*" -not -path "./gds/*" -not -path "./openlane/*")

 LARGE_FILES_GZ := $(addsuffix .gz, $(LARGE_FILES))

 ARCHIVES := $(shell find . -type f -name "*.gz")
 ARCHIVE_SOURCES := $(basename $(ARCHIVES))

 # PDK setup configs
 THREADS ?= $(shell nproc)
 STD_CELL_LIBRARY ?= sky130_fd_sc_hd
 SPECIAL_VOLTAGE_LIBRARY ?= sky130_fd_sc_hvl
 IO_LIBRARY ?= sky130_fd_io
 SKYWATER_COMMIT ?= 3d7617a1acb92ea883539bcf22a632d6361a5de4
 OPEN_PDKS_COMMIT ?= 32cdb2097fd9a629c91e8ea33e1f6de08ab25946

 .DEFAULT_GOAL := ship
 # We need portable GDS_FILE pointers...
 .PHONY: ship
 ship: check-env uncompress
 	@echo "###############################################"
 	@echo "Generating Caravel GDS (sources are in the 'gds' directory)"
 	@sleep 1
 	@cp gds/caravel.gds gds/caravel.old.gds && echo "Copying old Caravel to gds/caravel.old.gds" || true
 	@cd gds && MAGTYPE=mag magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull gen_caravel.tcl < /dev/null


 .PHONY: clean
 clean:
 	echo "clean"


 .PHONY: verify
 verify:
 	echo "verify"


 $(LARGE_FILES_GZ): %.gz: %
 	@if ! [ $(suffix $<) == ".gz" ]; then\
 		gzip -n --best $< > /dev/null &&\
 		echo "$< -> $@";\
 	fi

 # This target compresses all files larger than $(FILE_SIZE_LIMIT_MB) MB
 .PHONY: compress
 compress: $(LARGE_FILES_GZ)
 	@echo "Files larger than $(FILE_SIZE_LIMIT_MB) MBytes are compressed!"


 $(ARCHIVE_SOURCES): %: %.gz
 	@gzip -d $< &&\
 	echo "$< -> $@";\

 .PHONY: uncompress
 uncompress: $(ARCHIVE_SOURCES)
 	@echo "All files are uncompressed!"


 # LVS
 BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
 LVS_BLOCKS = $(foreach block, $(BLOCKS), lvs-$(block))
 $(LVS_BLOCKS): lvs-% : ./mag/%.mag ./verilog/gl/%.v
 	echo "Extracting $*"
 	mkdir -p ./mag/tmp
 	echo "load $* -dereference;\
 		select top cell;\
 		foreach cell [cellname list children] {\
 			load \$$cell -dereference;\
 			property LEFview TRUE;\
 		};\
 		load $* -dereference;\
 		select top cell;\
 		extract no all;\
 		extract do local;\
 		extract unique;\
 		extract;\
 		ext2spice lvs;\
 		ext2spice $*.ext;\
 		feedback save extract_$*.log;\
 		exit;" > ./mag/extract_$*.tcl
 	cd mag && export MAGTYPE=maglef; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull extract_$*.tcl < /dev/null
 	mv ./mag/$*.spice ./spi/lvs
 	rm ./mag/*.ext
 	mv -f ./mag/extract_$*.{tcl,log} ./mag/tmp
 	####
 	mkdir -p ./spi/lvs/tmp
 	sh ./spi/lvs/run_lvs.sh ./spi/lvs/$*.spice ./verilog/gl/$*.v $*
 	@echo ""
 	python3 ./scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json
 	mv -f ./verilog/gl/*{.out,.json,.log} ./spi/lvs/tmp 2> /dev/null || true
 	@echo ""
 	@echo "LVS: ./spi/lvs/$*.spice vs. ./verilog/gl/$*.v"
 	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"

 # connect-by-label is enabled here!
 LVS_MAGLEF_BLOCKS = $(foreach block, $(BLOCKS), lvs-maglef-$(block))
 $(LVS_MAGLEF_BLOCKS): lvs-maglef-% : ./mag/%.mag ./verilog/gl/%.v
 	echo "Extracting $*"
 	mkdir -p ./maglef/tmp
 	echo "load $* -dereference;\
 		select top cell;\
 		foreach cell [cellname list children] {\
 			load \$$cell -dereference;\
 			property LEFview TRUE;\
 		};\
 		load $* -dereference;\
 		select top cell;\
 		extract no all;\
 		extract do local;\
 		extract;\
 		ext2spice lvs;\
 		ext2spice $*.ext;\
 		feedback save extract_$*.log;\
 		exit;" > ./mag/extract_$*.tcl
 	cd mag && export MAGTYPE=maglef; magic -noc -dnull extract_$*.tcl < /dev/null
 	mv ./mag/$*.spice ./spi/lvs
 	rm ./maglef/*.ext
 	mv -f ./mag/extract_$*.{tcl,log} ./maglef/tmp
 	####
 	mkdir -p ./spi/lvs/tmp
 	sh ./spi/lvs/run_lvs.sh ./spi/lvs/$*.spice ./verilog/gl/$*.v $*
 	@echo ""
 	python3 ./scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json
 	mv -f ./verilog/gl/*{.out,.json,.log} ./spi/lvs/tmp 2> /dev/null || true
 	@echo ""
 	@echo "LVS: ./spi/lvs/$*.spice vs. ./verilog/gl/$*.v"
 	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"

 # DRC
 BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
 DRC_BLOCKS = $(foreach block, $(BLOCKS), drc-$(block))
 $(DRC_BLOCKS): drc-% : ./gds/%.gds
 	echo "Running DRC on $*"
 	mkdir -p ./gds/tmp
 	cd gds && export DESIGN_IN_DRC=$* && export MAGTYPE=mag; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull drc_on_gds.tcl < /dev/null
 	@echo "DRC result: ./gds/tmp/$*.drc"

 # Antenna
 BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
 ANTENNA_BLOCKS = $(foreach block, $(BLOCKS), antenna-$(block))
 $(ANTENNA_BLOCKS): antenna-% : ./gds/%.gds
 	echo "Running Antenna Checks on $*"
 	mkdir -p ./gds/tmp
 	cd gds && export DESIGN_IN_ANTENNA=$* && export MAGTYPE=mag; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull antenna_on_gds.tcl < /dev/null 2>&1 | tee ./tmp/$*.antenna
 	mv -f ./gds/*.ext ./gds/tmp/
 	@echo "Antenna result: ./gds/tmp/$*.antenna"

 mag2gds: check-env
 	echo "\
 		gds readonly true; \
 		gds rescale false; \
 		load caravel -dereference;\
 		select top cell;\
 		gds write caravel.gds; \
 		exit;" > ./mag/mag2gds_caravel.tcl
 	@cd mag && PDKPATH=${PDK_ROOT}/sky130A magic -noc -dnull mag2gds_caravel.tcl < /dev/null
 	@rm ./mag/mag2gds_caravel.tcl
 	mv -f ./gds/caravel.gds ./gds/caravel.old.gds
 	mv ./mag/caravel.gds ./gds

 .PHONY: help
 help:
 	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$'


 ###########################################################################
 .PHONY: pdk
 pdk: skywater-pdk skywater-library open_pdks build-pdk

 $(PDK_ROOT)/skywater-pdk:
 	git clone https://github.com/google/skywater-pdk.git $(PDK_ROOT)/skywater-pdk

 .PHONY: skywater-pdk
 skywater-pdk: check-env $(PDK_ROOT)/skywater-pdk
 	cd $(PDK_ROOT)/skywater-pdk && \
 		git checkout master && git pull && \
 		git checkout -qf $(SKYWATER_COMMIT)

 .PHONY: skywater-library
 skywater-library: check-env $(PDK_ROOT)/skywater-pdk
 	cd $(PDK_ROOT)/skywater-pdk && \
 		git submodule update --init libraries/$(STD_CELL_LIBRARY)/latest && \
 		git submodule update --init libraries/$(IO_LIBRARY)/latest && \
 		git submodule update --init libraries/$(SPECIAL_VOLTAGE_LIBRARY)/latest && \
 		$(MAKE) -j$(THREADS) timing

 ### OPEN_PDKS
 $(PDK_ROOT)/open_pdks:
 	git clone https://github.com/RTimothyEdwards/open_pdks.git $(PDK_ROOT)/open_pdks

 .PHONY: open_pdks
 open_pdks: check-env $(PDK_ROOT)/open_pdks
 	cd $(PDK_ROOT)/open_pdks && \
 		git checkout master && git pull && \
 		git checkout -qf $(OPEN_PDKS_COMMIT)

 .PHONY: build-pdk
 build-pdk: check-env $(PDK_ROOT)/open_pdks $(PDK_ROOT)/skywater-pdk
 	[ -d $(PDK_ROOT)/sky130A ] && \
 		(echo "Warning: A sky130A build already exists under $(PDK_ROOT). It will be deleted first!" && \
 		sleep 5 && \
 		rm -rf $(PDK_ROOT)/sky130A) || \
 		true
 	cd $(PDK_ROOT)/open_pdks && \
 		./configure --with-sky130-source=$(PDK_ROOT)/skywater-pdk/libraries --with-sky130-local-path=$(PDK_ROOT) && \
 		cd sky130 && \
 		$(MAKE) veryclean && \
 		$(MAKE) && \
 		$(MAKE) install-local

 .RECIPE: manifest
 manifest:
 	cd verilog/rtl/ && \
 	find * -type f ! -name "user_*.v" ! -name "manifest" ! -name "README" ! -name "defines.v" -exec shasum {} \; > manifest && \
 	cd ../../maglef/ && \
 	shasum *.mag > manifest && \
 	cd ../mag/ && \
 	shasum caravel.mag .magicrc > manifest


 check-env:
 ifndef PDK_ROOT
 	$(error PDK_ROOT is undefined, please export it before running make)
 endif

 # Make README.rst
 README.rst: README.src.rst docs/source/getting-started.rst docs/source/tool-versioning.rst openlane/README.src.rst docs/source/caravel-with-openlane.rst Makefile
 	pip -q install rst_include && \
 	rm -f README.rst && \
 		rst_include include README.src.rst - | \
 			sed \
 				-e's@\.\/\_static@\/docs\/source\/\_static@g' \
 				-e's@:ref:`tool-versioning`@`tool-versioning`_@g' \
 				-e's@.. note::@**NOTE:**@g' \
 				-e's@.. warning::@**WARNING:**@g' \
 				> README.rst && \
 		rst_include include openlane/README.src.rst - | \
 			sed \
 				-e's@https://github.com/efabless/caravel/blob/master/verilog@../verilog@g' \
 				-e's@:ref:`getting-started`@`README.rst <../README.rst>`__@g' \
 				-e's@https://github.com/efabless/caravel/blob/master/openlane/@./@g' \
 				-e's@.. note::@**NOTE:**@g' \
 				-e's@.. warning::@**WARNING:**@g' \
 				> openlane/README.rst
	# SPDX-FileCopyrightText: 2020 Efabless Corporation
	#
	# 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.
	#
	# SPDX-License-Identifier: Apache-2.0

	# cannot commit files larger than 100 MB to GitHub
	FILE_SIZE_LIMIT_MB = 100
	LARGE_FILES := $(shell find ./gds -type f -name "*.gds")
	LARGE_FILES += $(shell find . -type f -size +$(FILE_SIZE_LIMIT_MB)M -not -path "./.git/" -not -path "./gds/" -not -path "./openlane/*")

	LARGE_FILES_GZ := $(addsuffix .gz, $(LARGE_FILES))

	ARCHIVES := $(shell find . -type f -name "*.gz")
	ARCHIVE_SOURCES := $(basename $(ARCHIVES))

	# PDK setup configs
	THREADS ?= $(shell nproc)
	STD_CELL_LIBRARY ?= sky130_fd_sc_hd
	SPECIAL_VOLTAGE_LIBRARY ?= sky130_fd_sc_hvl
	IO_LIBRARY ?= sky130_fd_io
	SKYWATER_COMMIT ?= 3d7617a1acb92ea883539bcf22a632d6361a5de4
	OPEN_PDKS_COMMIT ?= 32cdb2097fd9a629c91e8ea33e1f6de08ab25946

	.DEFAULT_GOAL := ship
	# We need portable GDS_FILE pointers...
	.PHONY: ship
	ship: check-env uncompress
	@echo "###############################################"
	@echo "Generating Caravel GDS (sources are in the 'gds' directory)"
	@sleep 1
	@cp gds/caravel.gds gds/caravel.old.gds && echo "Copying old Caravel to gds/caravel.old.gds" \|\| true
	@cd gds && MAGTYPE=mag magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull gen_caravel.tcl < /dev/null



	.PHONY: clean
	clean:
	echo "clean"



	.PHONY: verify
	verify:
	echo "verify"



	$(LARGE_FILES_GZ): %.gz: %
	@if ! [ $(suffix $<) == ".gz" ]; then\
	gzip -n --best $< > /dev/null &&\
	echo "$< -> $@";\
	fi

	# This target compresses all files larger than $(FILE_SIZE_LIMIT_MB) MB
	.PHONY: compress
	compress: $(LARGE_FILES_GZ)
	@echo "Files larger than $(FILE_SIZE_LIMIT_MB) MBytes are compressed!"



	$(ARCHIVE_SOURCES): %: %.gz
	@gzip -d $< &&\
	echo "$< -> $@";\

	.PHONY: uncompress
	uncompress: $(ARCHIVE_SOURCES)
	@echo "All files are uncompressed!"


	# LVS
	BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
	LVS_BLOCKS = $(foreach block, $(BLOCKS), lvs-$(block))
	$(LVS_BLOCKS): lvs-% : ./mag/%.mag ./verilog/gl/%.v
	echo "Extracting $*"
	mkdir -p ./mag/tmp
	echo "load $* -dereference;\
	select top cell;\
	foreach cell [cellname list children] {\
	load \$$cell -dereference;\
	property LEFview TRUE;\
	};\
	load $* -dereference;\
	select top cell;\
	extract no all;\
	extract do local;\
	extract unique;\
	extract;\
	ext2spice lvs;\
	ext2spice $*.ext;\
	feedback save extract_$*.log;\
	exit;" > ./mag/extract_$*.tcl
	cd mag && export MAGTYPE=maglef; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull extract_$*.tcl < /dev/null
	mv ./mag/$*.spice ./spi/lvs
	rm ./mag/*.ext
	mv -f ./mag/extract_$*.{tcl,log} ./mag/tmp
	####
	mkdir -p ./spi/lvs/tmp
	sh ./spi/lvs/run_lvs.sh ./spi/lvs/$.spice ./verilog/gl/$.v $*
	@echo ""
	python3 ./scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json
	mv -f ./verilog/gl/*{.out,.json,.log} ./spi/lvs/tmp 2> /dev/null \|\| true
	@echo ""
	@echo "LVS: ./spi/lvs/$.spice vs. ./verilog/gl/$.v"
	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"

	# connect-by-label is enabled here!
	LVS_MAGLEF_BLOCKS = $(foreach block, $(BLOCKS), lvs-maglef-$(block))
	$(LVS_MAGLEF_BLOCKS): lvs-maglef-% : ./mag/%.mag ./verilog/gl/%.v
	echo "Extracting $*"
	mkdir -p ./maglef/tmp
	echo "load $* -dereference;\
	select top cell;\
	foreach cell [cellname list children] {\
	load \$$cell -dereference;\
	property LEFview TRUE;\
	};\
	load $* -dereference;\
	select top cell;\
	extract no all;\
	extract do local;\
	extract;\
	ext2spice lvs;\
	ext2spice $*.ext;\
	feedback save extract_$*.log;\
	exit;" > ./mag/extract_$*.tcl
	cd mag && export MAGTYPE=maglef; magic -noc -dnull extract_$*.tcl < /dev/null
	mv ./mag/$*.spice ./spi/lvs
	rm ./maglef/*.ext
	mv -f ./mag/extract_$*.{tcl,log} ./maglef/tmp
	####
	mkdir -p ./spi/lvs/tmp
	sh ./spi/lvs/run_lvs.sh ./spi/lvs/$.spice ./verilog/gl/$.v $*
	@echo ""
	python3 ./scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json
	mv -f ./verilog/gl/*{.out,.json,.log} ./spi/lvs/tmp 2> /dev/null \|\| true
	@echo ""
	@echo "LVS: ./spi/lvs/$.spice vs. ./verilog/gl/$.v"
	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"

	# DRC
	BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
	DRC_BLOCKS = $(foreach block, $(BLOCKS), drc-$(block))
	$(DRC_BLOCKS): drc-% : ./gds/%.gds
	echo "Running DRC on $*"
	mkdir -p ./gds/tmp
	cd gds && export DESIGN_IN_DRC=$* && export MAGTYPE=mag; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull drc_on_gds.tcl < /dev/null
	@echo "DRC result: ./gds/tmp/$*.drc"

	# Antenna
	BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
	ANTENNA_BLOCKS = $(foreach block, $(BLOCKS), antenna-$(block))
	$(ANTENNA_BLOCKS): antenna-% : ./gds/%.gds
	echo "Running Antenna Checks on $*"
	mkdir -p ./gds/tmp
	cd gds && export DESIGN_IN_ANTENNA=$* && export MAGTYPE=mag; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/current/sky130A.magicrc -noc -dnull antenna_on_gds.tcl < /dev/null 2>&1 \| tee ./tmp/$*.antenna
	mv -f ./gds/*.ext ./gds/tmp/
	@echo "Antenna result: ./gds/tmp/$*.antenna"

	mag2gds: check-env
	echo "\
	gds readonly true; \
	gds rescale false; \
	load caravel -dereference;\
	select top cell;\
	gds write caravel.gds; \
	exit;" > ./mag/mag2gds_caravel.tcl
	@cd mag && PDKPATH=${PDK_ROOT}/sky130A magic -noc -dnull mag2gds_caravel.tcl < /dev/null
	@rm ./mag/mag2gds_caravel.tcl
	mv -f ./gds/caravel.gds ./gds/caravel.old.gds
	mv ./mag/caravel.gds ./gds

	.PHONY: help
	help:
	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null \| awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' \| sort \| egrep -v -e '^[^[:alnum:]]' -e '^$@$$'


	###########################################################################
	.PHONY: pdk
	pdk: skywater-pdk skywater-library open_pdks build-pdk

	$(PDK_ROOT)/skywater-pdk:
	git clone https://github.com/google/skywater-pdk.git $(PDK_ROOT)/skywater-pdk

	.PHONY: skywater-pdk
	skywater-pdk: check-env $(PDK_ROOT)/skywater-pdk
	cd $(PDK_ROOT)/skywater-pdk && \
	git checkout master && git pull && \
	git checkout -qf $(SKYWATER_COMMIT)

	.PHONY: skywater-library
	skywater-library: check-env $(PDK_ROOT)/skywater-pdk
	cd $(PDK_ROOT)/skywater-pdk && \
	git submodule update --init libraries/$(STD_CELL_LIBRARY)/latest && \
	git submodule update --init libraries/$(IO_LIBRARY)/latest && \
	git submodule update --init libraries/$(SPECIAL_VOLTAGE_LIBRARY)/latest && \
	$(MAKE) -j$(THREADS) timing

	### OPEN_PDKS
	$(PDK_ROOT)/open_pdks:
	git clone https://github.com/RTimothyEdwards/open_pdks.git $(PDK_ROOT)/open_pdks

	.PHONY: open_pdks
	open_pdks: check-env $(PDK_ROOT)/open_pdks
	cd $(PDK_ROOT)/open_pdks && \
	git checkout master && git pull && \
	git checkout -qf $(OPEN_PDKS_COMMIT)

	.PHONY: build-pdk
	build-pdk: check-env $(PDK_ROOT)/open_pdks $(PDK_ROOT)/skywater-pdk
	[ -d $(PDK_ROOT)/sky130A ] && \
	(echo "Warning: A sky130A build already exists under $(PDK_ROOT). It will be deleted first!" && \
	sleep 5 && \
	rm -rf $(PDK_ROOT)/sky130A) \|\| \
	true
	cd $(PDK_ROOT)/open_pdks && \
	./configure --with-sky130-source=$(PDK_ROOT)/skywater-pdk/libraries --with-sky130-local-path=$(PDK_ROOT) && \
	cd sky130 && \
	$(MAKE) veryclean && \
	$(MAKE) && \
	$(MAKE) install-local

	.RECIPE: manifest
	manifest:
	cd verilog/rtl/ && \
	find * -type f ! -name "user_*.v" ! -name "manifest" ! -name "README" ! -name "defines.v" -exec shasum {} \; > manifest && \
	cd ../../maglef/ && \
	shasum *.mag > manifest && \
	cd ../mag/ && \
	shasum caravel.mag .magicrc > manifest


	check-env:
	ifndef PDK_ROOT
	$(error PDK_ROOT is undefined, please export it before running make)
	endif

	# Make README.rst
	README.rst: README.src.rst docs/source/getting-started.rst docs/source/tool-versioning.rst openlane/README.src.rst docs/source/caravel-with-openlane.rst Makefile
	pip -q install rst_include && \
	rm -f README.rst && \
	rst_include include README.src.rst - \| \
	sed \
	-e's@\.\/\_static@\/docs\/source\/\_static@g' \
	-e's@:ref:`tool-versioning`@`tool-versioning`_@g' \
	-e's@.. note::@NOTE:@g' \
	-e's@.. warning::@WARNING:@g' \
	> README.rst && \
	rst_include include openlane/README.src.rst - \| \
	sed \
	-e's@https://github.com/efabless/caravel/blob/master/verilog@../verilog@g' \
	-e's@:ref:`getting-started`@`README.rst <../README.rst>`__@g' \
	-e's@https://github.com/efabless/caravel/blob/master/openlane/@./@g' \
	-e's@.. note::@NOTE:@g' \
	-e's@.. warning::@WARNING:@g' \
	> openlane/README.rst