git/templates/Makefile

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Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it We have various behavior that's shared across our Makefiles, or that really should be (e.g. via defined templates). Let's create a top-level "shared.mak" to house those sorts of things, and start by adding the ".DELETE_ON_ERROR" flag to it. See my own 7b76d6bf221 (Makefile: add and use the ".DELETE_ON_ERROR" flag, 2021-06-29) and db10fc6c09f (doc: simplify Makefile using .DELETE_ON_ERROR, 2021-05-21) for the addition and use of the ".DELETE_ON_ERROR" flag. I.e. this changes the behavior of existing rules in the altered Makefiles (except "Makefile" & "Documentation/Makefile"). I'm confident that this is safe having read the relevant rules in those Makfiles, and as the GNU make manual notes that it isn't the default behavior is out of an abundance of backwards compatibility caution. From edition 0.75 of its manual, covering GNU make 4.3: [Enabling '.DELETE_ON_ERROR' is] almost always what you want 'make' to do, but it is not historical practice; so for compatibility, you must explicitly request it. This doesn't introduce a bug by e.g. having this ".DELETE_ON_ERROR" flag only apply to this new shared.mak, Makefiles have no such scoping semantics. It does increase the danger that any Makefile without an explicit "The default target of this Makefile is..." snippet to define the default target as "all" could have its default rule changed if our new shared.mak ever defines a "real" rule. In subsequent commits we'll be careful not to do that, and such breakage would be obvious e.g. in the case of "make -C t". We might want to make that less fragile still (e.g. by using ".DEFAULT_GOAL" as noted in the preceding commit), but for now let's simply include "shared.mak" without adding that boilerplate to all the Makefiles that don't have it already. Most of those are already exposed to that potential caveat e.g. due to including "config.mak*". Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-03 16:04:13 +00:00
# Import tree-wide shared Makefile behavior and libraries
include ../shared.mak
# make and install sample templates
INSTALL ?= install
TAR ?= tar
RM ?= rm -f
prefix ?= $(HOME)
template_instdir ?= $(prefix)/share/git-core/templates
# DESTDIR=
ifndef SHELL_PATH
SHELL_PATH = /bin/sh
endif
ifndef PERL_PATH
PERL_PATH = perl
endif
SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
PERL_PATH_SQ = $(subst ','\'',$(PERL_PATH))
# Shell quote (do not use $(call) to accommodate ancient setups);
DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
template_instdir_SQ = $(subst ','\'',$(template_instdir))
all: boilerplates.made custom
# Put templates that can be copied straight from the source
# in a file direc--tory--file in the source. They will be
# just copied to the destination.
bpsrc = $(filter-out %~,$(wildcard *--*))
boilerplates.made : $(bpsrc)
$(QUIET)umask 022 && ls *--* 2>/dev/null | \
while read boilerplate; \
do \
case "$$boilerplate" in *~) continue ;; esac && \
dst=`echo "$$boilerplate" | sed -e 's|^this|.|;s|--|/|g'` && \
dir=`expr "$$dst" : '\(.*\)/'` && \
mkdir -p blt/$$dir && \
case "$$boilerplate" in \
*--) continue;; \
esac && \
sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
-e 's|@SHELL_PATH@|$(SHELL_PATH_SQ)|' \
-e 's|@PERL_PATH@|$(PERL_PATH_SQ)|g' $$boilerplate > \
blt/$$dst && \
if test -x "$$boilerplate"; then rx=rx; else rx=r; fi && \
chmod a+$$rx "blt/$$dst" || exit; \
done && \
date >$@
# If you need build-tailored templates, build them into blt/
# directory yourself here.
custom:
$(QUIET): no custom templates yet
clean:
$(RM) -r blt boilerplates.made
install: all
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(template_instdir_SQ)'
(cd blt && $(TAR) cf - .) | \
(cd '$(DESTDIR_SQ)$(template_instdir_SQ)' && umask 022 && $(TAR) xof -)