On Thu, Mar 21, 2024 at 02:38:36PM +0100, Max Gautier wrote: > On Thu, Mar 21, 2024 at 01:37:30PM +0100, Patrick Steinhardt wrote: > > On Mon, Mar 18, 2024 at 04:31:15PM +0100, Max Gautier wrote: > > > > It would be great to document _why_ we want to package the systemd units > > alongside with Git. > > > > > Signed-off-by: Max Gautier <mg@xxxxxxxxxxxxxxxx> > > > --- > > > Makefile | 4 ++++ > > > systemd/user/git-maintenance@.service | 16 ++++++++++++++++ > > > systemd/user/git-maintenance@.timer | 9 +++++++++ > > > 3 files changed, 29 insertions(+) > > > create mode 100644 systemd/user/git-maintenance@.service > > > create mode 100644 systemd/user/git-maintenance@.timer > > > > > > diff --git a/Makefile b/Makefile > > > index 4e255c81f2..276b4373c6 100644 > > > --- a/Makefile > > > +++ b/Makefile > > > @@ -619,6 +619,7 @@ htmldir = $(prefix)/share/doc/git-doc > > > ETC_GITCONFIG = $(sysconfdir)/gitconfig > > > ETC_GITATTRIBUTES = $(sysconfdir)/gitattributes > > > lib = lib > > > +libdir = $(prefix)/lib > > > # DESTDIR = > > > pathsep = : > > > > > > @@ -1328,6 +1329,8 @@ BUILTIN_OBJS += builtin/verify-tag.o > > > BUILTIN_OBJS += builtin/worktree.o > > > BUILTIN_OBJS += builtin/write-tree.o > > > > > > +SYSTEMD_USER_UNITS := $(wildcard systemd/user/*) > > > + > > > # THIRD_PARTY_SOURCES is a list of patterns compatible with the > > > # $(filter) and $(filter-out) family of functions. They specify source > > > # files which are taken from some third-party source where we want to be > > > @@ -3469,6 +3472,7 @@ install: all > > > $(INSTALL) -m 644 $(SCRIPT_LIB) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)' > > > $(INSTALL) $(INSTALL_STRIP) $(install_bindir_xprograms) '$(DESTDIR_SQ)$(bindir_SQ)' > > > $(INSTALL) $(BINDIR_PROGRAMS_NO_X) '$(DESTDIR_SQ)$(bindir_SQ)' > > > + $(INSTALL) -Dm 644 -t '$(DESTDIR_SQ)$(libdir)/systemd/user' $(SYSTEMD_USER_UNITS) > > > > I wonder whether we want to unconditionally install those units. Many of > > the platforms that we support don't even have systemd available, so > > certainly it wouldn't make any sense to install it on those platforms. > > > > Assuming that this is something we want in the first place I thus think > > that we should at least make this conditional and add some platform > > specific quirk to "config.mak.uname". > > > > We probably want that (conditional install) but I'm not sure where that > should go ; I'm not super familiar with autoconf. > > I just noticed than man 7 daemon (shipped by systemd) propose the > following snippet for installing systemd system services (should be easy > enough to adapt for user ervices, I think): > > PKG_PROG_PKG_CONFIG() > AC_ARG_WITH([systemdsystemunitdir], > [AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files])],, > [with_systemdsystemunitdir=auto]) > AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"], [ > def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd) > > AS_IF([test "x$def_systemdsystemunitdir" = "x"], > [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"], > [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])]) > with_systemdsystemunitdir=no], > [with_systemdsystemunitdir="$def_systemdsystemunitdir"])]) > AS_IF([test "x$with_systemdsystemunitdir" != "xno"], > [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])]) > AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemdsystemunitdir" != "xno"]) > > Would something like that work ? Probably. But while we do have autoconf wired up, the primary way of building Git does not use it, but rather uses `config.mak.uname`. I'd recommend to have a look at it to figure out how we handle other build-time options there. Patrick
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