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Example of automatically embedding git commit info into source tarballs
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| /git.mk export-subst |
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| # SPDX-License-Identifier: MIT OR FSFAP OR CC0-1.0 | |
| F:=$$F | |
| dollar := $$ | |
| # This stuff gets expanded at git-archive(1) time due to the export-subst | |
| # setting for this file in .gitattributes. See gitattributes(5) | |
| GIT_COMMIT := $Format:%H$ | |
| GIT_DATE := $Format:%cD$ | |
| GIT_TIMESTAMP := $Format:%ct$ | |
| GIT_SUBJ := $Format:%s$ | |
| GIT_DIRTY := | |
| # If the above wasn't expanded get version info straight from git | |
| ifeq ($(GIT_COMMIT),$(dollar)Format:%H$(dollar)) | |
| GIT_COMMIT := $(shell git rev-parse HEAD) | |
| GIT_DATE := $(shell git show -s --pretty=format:%cD) | |
| GIT_TIMESTAMP := $(shell git show -s --pretty=format:%ct) | |
| GIT_SUBJ := $(shell git show -s --pretty=format:%s) | |
| GIT_DIRTY := -dirty | |
| endif | |
| .PHONY: FORCE | |
| git.h: FORCE | |
| @printf ' GIT\t$@\n' | |
| @echo '#pragma once' > $@ | |
| @echo '#define GIT_COMMIT "commit $(GIT_COMMIT)$(GIT_DIRTY)"' >> $@ | |
| @echo '#define GIT_SUBJ "$(GIT_SUBJ)"' >> $@ | |
| @echo '#define GIT_DATE "$(GIT_DATE)"' >> $@ |
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