186 lines
7.7 KiB
Makefile
186 lines
7.7 KiB
Makefile
####################################
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# Makefile configuration variables #
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OS_FILENAME = os.bat
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BUILD_DIR = build
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SCREENSHOTS_DIR = deploy-screenshots
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COMMIT_TIMESTAMP_ISO_8601 = $$(git log -1 --pretty=format:%ad --date=iso8601-strict)
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####################################
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MAKEFLAGS = --warn-undefined-variables
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SHELL = bash -euET -o pipefail -c
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.SECONDEXPANSION:
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Makefiles = Makefile Makefile.example-os Makefile.test-example-os
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os_filename = ${OS_FILENAME}
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bld = ${BUILD_DIR}
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screenshots = ${SCREENSHOTS_DIR}
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tests_emu = test/qemu-system-i386-floppy test/qemu-system-i386-cdrom test/qemu-system-arm test/virtualbox test/bochs test/gui-sh test/dosbox
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tests_requiring_sudo = test/fat12_mount test/iso_mount
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tests_noemu = test/zip test/os.reasm test/sizes test/fat12_contents test/reproducible_build
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# We truncate the timezone, because the Darwin version of date seems to lack
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# the %:z format (for ±HH:MM timezone).
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define date_command
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if test "$$(uname -s)" = Darwin; then \
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date -j -f %Y-%m-%dT%H:%M:%S $$(echo ${1} | cut -c 1-19) ${2}; \
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else \
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date -d ${1} ${2}; \
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fi
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endef
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commit_timestamp = "$$(${call date_command,"${COMMIT_TIMESTAMP_ISO_8601}",'+%Y%m%d%H%m.%S'})"
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commit_timestamp_iso_8601 = ${COMMIT_TIMESTAMP_ISO_8601}
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reproducible_os_filename="${bld}/reproduced_$$(basename "${os_filename}")"
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built_files += ${bld}/check_makefile \
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${bld}/check_makefile_targets \
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${bld}/check_makefile_w_arnings \
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${bld}/makefile_built_directories \
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${bld}/makefile_built_files \
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${bld}/makefile_database \
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${bld}/makefile_database_files \
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${bld}/makefile_file_targets \
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${bld}/makefile_non_file_targets \
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${bld}/makefile_phony \
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${bld}/makefile_targets \
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${bld}/makefile_w_arnings
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include Makefile.example-os
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include Makefile.test-example-os
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more_built_directories = ${built_directories} ${bld}
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.PHONY: all
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# all: os.arm.disasm
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all: .gitignore \
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${bld}/check_makefile
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${bld}/makefile_w_arnings: | $${@D}
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${built_files}: | $${@D}
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${bld}/makefile_w_arnings: ${Makefiles}
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@unset MAKEFLAGS MAKELEVEL MAKE_TERMERR MFLAGS; \
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make -n --warn-undefined-variables \
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OS_FILENAME=${OS_FILENAME} \
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BUILD_DIR=${BUILD_DIR} \
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SCREENSHOTS_DIR=${SCREENSHOTS_DIR} \
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COMMIT_TIMESTAMP_ISO_8601=${COMMIT_TIMESTAMP_ISO_8601} \
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test 2>$@ 1>/dev/null \
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|| cat $@
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# Check that the file ${bld}/makefile_w_arnings is present, and that it does not contain the string "warn".
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${bld}/check_makefile_w_arnings: ${bld}/makefile_w_arnings
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@cat ${bld}/makefile_w_arnings > /dev/null && (! grep -i warn $<) && touch $@
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# Check that the declared list of built files matches the list of targets extracted from the Makefile.
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${bld}/check_makefile_targets: ${bld}/makefile_built_files ${bld}/makefile_file_targets ${bld}/check_makefile_w_arnings
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@diff ${bld}/makefile_built_files ${bld}/makefile_file_targets && touch $@
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${bld}/check_makefile: ${bld}/check_makefile_w_arnings ${bld}/check_makefile_targets
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@touch $@
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${bld}/makefile_database: ${Makefiles} ${bld}/check_makefile_w_arnings
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@unset MAKEFLAGS MAKELEVEL MAKE_TERMERR MFLAGS; \
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make -rpn \
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OS_FILENAME=${OS_FILENAME} \
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BUILD_DIR=${BUILD_DIR} \
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SCREENSHOTS_DIR=${SCREENSHOTS_DIR} \
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COMMIT_TIMESTAMP_ISO_8601=${COMMIT_TIMESTAMP_ISO_8601} \
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| sed -n -e '/^# Make data base,/,$$p' > $@
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${bld}/makefile_database_files: ${bld}/makefile_database ${bld}/check_makefile_w_arnings
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@sed -n -e '/^# Files$$/,/^# files hash-table stats:$$/p' $< > $@
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${bld}/makefile_built_directories: ${bld}/check_makefile_w_arnings
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@echo ${more_built_directories} | tr ' ' '\n' | grep -v '^[[:space:]]*$$' | sort > $@
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${bld}/makefile_built_files: ${bld}/check_makefile_w_arnings
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@echo ${built_files} | tr ' ' '\n' | grep -v '^[[:space:]]*$$' | sort > $@
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${bld}/makefile_phony: ${bld}/makefile_database_files ${bld}/check_makefile_w_arnings
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@sed -n -e 's/^\.PHONY: \(.*\)$$/\1/p' $< | tr ' ' '\n' | grep -v '^[[:space:]]*$$' | sort > $@
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${bld}/makefile_targets: ${bld}/makefile_database_files ${bld}/check_makefile_w_arnings
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@grep -E -v '^([[:space:]]|#|\.|$$|^[^:]*:$$)' $< | grep '^[^ :]*:' | sed -e 's|^\([^:]*\):.*$$|\1|' | sort > $@
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${bld}/makefile_non_file_targets: ${bld}/makefile_phony ${bld}/makefile_built_directories ${bld}/check_makefile_w_arnings
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@cat ${bld}/makefile_phony ${bld}/makefile_built_directories | sort > $@
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${bld}/makefile_file_targets: ${bld}/makefile_non_file_targets ${bld}/makefile_targets ${bld}/check_makefile_w_arnings
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@comm -23 ${bld}/makefile_targets ${bld}/makefile_non_file_targets > $@
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${built_directories}: ${bld}/check_makefile
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${more_built_directories}: ${Makefiles}
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mkdir -p $@ && touch $@
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.PHONY: clean
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clean: clean_reproducible ${bld}/check_makefile
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rm -f ${built_files} ${temp_files}
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for d in $$(echo ${more_built_directories} ${temp_directories} | tr ' ' '\n' | sort --reverse); do \
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if test -e "$$d"; then \
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rmdir "$$d"; \
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fi; \
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done
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.PHONY: clean_reproducible
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clean_reproducible: ${bld}/check_makefile
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# Calling make unconditionally would cause infinite recursion, so we
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# first check whether there is anything to remove.
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if test -d ${bld}/reproducible -o -f ${bld}/${reproducible_os_filename}; then \
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unset MAKEFLAGS MAKELEVEL MAKE_TERMERR MFLAGS; \
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make OS_FILENAME=${reproducible_os_filename} \
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BUILD_DIR=${bld}/reproducible \
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SCREENSHOTS_DIR=${bld}/reproducible/screenshots \
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COMMIT_TIMESTAMP_ISO_8601=${COMMIT_TIMESTAMP_ISO_8601} \
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clean; \
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fi
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.gitignore: ${bld}/check_makefile
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for f in ${built_files}; do echo "/$$f"; done | sort > $@
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test: all \
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${bld}/check_makefile
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# DEBUG: ${bld}/os.hex_with_offsets ${bld}/os.offsets.hex
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${bld}/test_pass/noemu_reproducible_build: ${os_filename} ${bld}/os.hex_with_offsets ${bld}/check_makefile
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# Let some time pass so that any timestamp that may affect the result changes.
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sleep 5
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# TODO: try to see if we can re-enable some of these variables without
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# causing problems on macos.
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unset MAKEFLAGS MAKELEVEL MAKE_TERMERR MFLAGS; \
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make OS_FILENAME=${reproducible_os_filename} \
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BUILD_DIR=${bld}/reproducible \
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SCREENSHOTS_DIR=${bld}/reproducible/screenshots \
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COMMIT_TIMESTAMP_ISO_8601=${COMMIT_TIMESTAMP_ISO_8601} \
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clean
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unset MAKEFLAGS MAKELEVEL MAKE_TERMERR MFLAGS; \
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make OS_FILENAME=${reproducible_os_filename} \
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BUILD_DIR=${bld}/reproducible \
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SCREENSHOTS_DIR=${bld}/reproducible/screenshots \
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COMMIT_TIMESTAMP_ISO_8601=${COMMIT_TIMESTAMP_ISO_8601} \
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${reproducible_os_filename} \
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${bld}/reproducible/os.hex_with_offsets
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# Check that the second build produced the same file.
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if ! diff ${os_filename} ${reproducible_os_filename}; then \
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diff ${bld}/os.hex_with_offsets ${bld}/reproducible/os.hex_with_offsets || true; \
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if test "$$(uname -s)" = Darwin -o "$$(uname -o)" = "Cygwin"; then \
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for i in `seq 5`; do \
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printf '\033[1;31m########################################################\033[m'; \
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done; \
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echo "REPRODUCIBLE BUILDS ARE UNSUPPORTED ON MACOS AND WINDOWS"; \
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for i in `seq 5`; do \
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printf '\033[1;31m########################################################\033[m'; \
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done; \
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else \
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exit 1; \
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fi; \
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fi
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unset MAKEFLAGS MAKELEVEL MAKE_TERMERR MFLAGS; \
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make OS_FILENAME=${reproducible_os_filename} \
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BUILD_DIR=${bld}/reproducible \
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SCREENSHOTS_DIR=${bld}/reproducible/screenshots \
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COMMIT_TIMESTAMP_ISO_8601=${COMMIT_TIMESTAMP_ISO_8601} \
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clean
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touch $@
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