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build: allow to override git-rev and timestamp build info

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javalsai
2025-07-21 18:30:28 +02:00
parent e529483c28
commit 947c92ce3f
2 changed files with 16 additions and 4 deletions
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9
Makefile
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@@ -22,14 +22,15 @@ DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
_OBJ = main.o log.o util.o ui.o ui_state.o config.o desktop.o auth.o ofield.o efield.o users.o sessions.o chvt.o launch_state.o
OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
.git/HEAD:
INFO_GIT_REV?=$$(git describe --long --tags --always || echo '?')
INFO_BUILD_TS?=$$(date +%s)
$(IDIR)/version.h: Makefile .git/HEAD
$(IDIR)/version.h: Makefile
@tmp=$$(mktemp); \
printf '' > $$tmp; \
echo '#define LIDM_VERSION "'$(VERSION)'"' >> $$tmp; \
echo '#define LIDM_GIT_REV "'$$(git describe --long --tags --always || echo '?')'"' >> $$tmp; \
echo '#define LIDM_BUILD_TS '$$(date +%s) >> $$tmp; \
echo '#define LIDM_GIT_REV "'$(INFO_GIT_REV)'"' >> $$tmp; \
echo '#define LIDM_BUILD_TS '$(INFO_BUILD_TS) >> $$tmp; \
if ! cmp -s $$tmp $@; then \
mv $$tmp $@; \
fi; \

11
docs/PACKAGERS.md
View File

@@ -38,6 +38,17 @@ Lidm attempts to support being built by `gcc` and `clang` with preference over t
Compiler flags should be passed with `CFLAGS`, its `-O3 -Wall` by default so adding anything will overwrite this.
## Build Metadata
`lidm -v` outputs some information about the build version, this can be weaked with `INFO_GIT_REV` and `INFO_BUILD_TS`, by default they are:
```make
INFO_GIT_REV?=$$(git describe --long --tags --always || echo '?')
INFO_BUILD_TS?=$$(date +%s)
```
But this can be changed by just passing those env variables, for example, in the case git is not applicable in the build environment of the package.
## Target Directory
`DESTDIR` can be used to for installation recipes to install on alternative root directories. Along with `PREFIX` (defaults to `/usr`) for systems which don't use the common `/usr` structure. e.g. `make install DESTDIR=$out PREFIX=`