diff options
Diffstat (limited to 'build-aux')
-rw-r--r-- | build-aux/Makefile.each.tail/00-dist.mk | 2 | ||||
-rw-r--r-- | build-aux/Makefile.each.tail/10-std.mk | 39 | ||||
-rw-r--r-- | build-aux/Makefile.head.mk | 39 | ||||
-rw-r--r-- | build-aux/Makefile.once.head/00-dist.mk | 17 | ||||
-rw-r--r-- | build-aux/Makefile.once.head/00-write-ifchanged.mk | 1 | ||||
-rw-r--r-- | build-aux/Makefile.once.head/10-std.mk | 20 | ||||
-rw-r--r-- | build-aux/Makefile.once.head/11-gnustandards.mk | 181 | ||||
-rw-r--r-- | build-aux/Makefile.once.tail/00-dist.mk | 30 | ||||
-rw-r--r-- | build-aux/Makefile.tail.mk | 25 | ||||
-rwxr-xr-x | build-aux/write-ifchanged | 25 |
10 files changed, 287 insertions, 92 deletions
diff --git a/build-aux/Makefile.each.tail/00-dist.mk b/build-aux/Makefile.each.tail/00-dist.mk index 042af23cb4..1ab75680bc 100644 --- a/build-aux/Makefile.each.tail/00-dist.mk +++ b/build-aux/Makefile.each.tail/00-dist.mk @@ -14,5 +14,5 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. ifeq ($(outdir),$(topoutdir)) -$(_am)clean_files += $(addprefix $(PACKAGE)-*,$($(_am)distexts) /) +std.clean_files += $(addprefix $(PACKAGE)-*,$(dist.exts) /) endif diff --git a/build-aux/Makefile.each.tail/10-std.mk b/build-aux/Makefile.each.tail/10-std.mk index ca8497c946..4d36cc596b 100644 --- a/build-aux/Makefile.each.tail/10-std.mk +++ b/build-aux/Makefile.each.tail/10-std.mk @@ -12,31 +12,30 @@ # # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. - # Add some more defaults to the *_files variables -$(_am)clean_files += $($(_am)gen_files) $($(_am)cfg_files) $($(_am)out_files) +std.clean_files += $(std.gen_files) $(std.cfg_files) $(std.out_files) # Make each of the standard variables relative to the correct directory -$(_am)src_files := $(addprefix $(srcdir)/,$($(_am)src_files)) -$(_am)gen_files := $(addprefix $(srcdir)/,$($(_am)gen_files)) -$(_am)cfg_files := $(addprefix $(outdir)/,$($(_am)cfg_files)) -$(_am)out_files := $(addprefix $(outdir)/,$($(_am)out_files)) -$(_am)sys_files := $(addprefix $(DESTDIR),$($(_am)sys_files)) -$(_am)clean_files := $(addprefix $(outdir)/,$($(_am)clean_files)) -$(_am)slow_files := $(addprefix $(outdir)/,$($(_am)slow_files)) -$(_am)subdirs := $(addprefix $(outdir)/,$($(_am)subdirs)) +std.src_files := $(addprefix $(srcdir)/,$(std.src_files)) +std.gen_files := $(addprefix $(srcdir)/,$(std.gen_files)) +std.cfg_files := $(addprefix $(outdir)/,$(std.cfg_files)) +std.out_files := $(addprefix $(outdir)/,$(std.out_files)) +std.sys_files := $(addprefix $(DESTDIR),$(std.sys_files)) +std.clean_files := $(addprefix $(outdir)/,$(std.clean_files)) +std.slow_files := $(addprefix $(outdir)/,$(std.slow_files)) +std.subdirs := $(addprefix $(outdir)/,$(std.subdirs)) # Creative targets -$(outdir)/build : $($(_am)out_files/$(outdir)) -$(outdir)/install : $($(_am)sys_files/$(outdir)) -$(outdir)/installdirs: $(dir $($(_am)sys_files/$(outdir))) +$(outdir)/build : $(std.out_files) +$(outdir)/install : $(std.sys_files) +$(outdir)/installdirs: $(dir $(std.sys_files)) # Destructive targets -_am_uninstall/$(outdir) = $(_am_sys_files/$(outdir)) -_am_mostlyclean/$(outdir) = $(filter-out $(_am_slow_files/$(outdir)) $(_am_cfg_files/$(outdir)) $(_am_gen_files/$(outdir)) $(_am_src_files/$(outdir)),$(_am_clean_files/$(outdir))) -_am_clean/$(outdir) = $(filter-out $(_am_cfg_files/$(outdir)) $(_am_gen_files/$(outdir)) $(_am_src_files/$(outdir)),$(_am_clean_files/$(outdir))) -_am_distclean/$(outdir) = $(filter-out $(_am_gen_files/$(outdir)) $(_am_src_files/$(outdir)),$(_am_clean_files/$(outdir))) -_am_maintainer-clean/$(outdir) = $(filter-out $(_am_src_files/$(outdir)),$(_am_clean_files/$(outdir))) +_std.uninstall/$(outdir) := $(_std.sys_files) +_std.mostlyclean/$(outdir) := $(filter-out $(_std.slow_files) $(_std.cfg_files) $(_std.gen_files) $(_std.src_files),$(_std.clean_files)) +_std.clean/$(outdir) := $(filter-out $(_std.cfg_files) $(_std.gen_files) $(_std.src_files),$(_std.clean_files)) +_std.distclean/$(outdir) := $(filter-out $(_std.gen_files) $(_std.src_files),$(_std.clean_files)) +_std.maintainer-clean/$(outdir) := $(filter-out $(_std.src_files),$(_std.clean_files)) $(addprefix $(outdir)/,uninstall mostlyclean clean distclean maintainer-clean): - $(RM) -- $(sort $(_am_$(@F)/$(@D))) - $(RMDIRS) $(sort $(dir $(_am_$(@F)/$(@D)))) 2>/dev/null || $(TRUE) + $(RM) -- $(sort $(_std.$(@F)/$(@D))) + $(RMDIRS) $(sort $(dir $(_std.$(@F)/$(@D)))) 2>/dev/null || $(TRUE) diff --git a/build-aux/Makefile.head.mk b/build-aux/Makefile.head.mk index e4ae329a8f..e5ef379a09 100644 --- a/build-aux/Makefile.head.mk +++ b/build-aux/Makefile.head.mk @@ -14,36 +14,39 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. # This bit only gets evaluated once, at the very beginning -ifeq ($(_am_NO_ONCE),) +ifeq ($(_at.NO_ONCE),) + +_at.noslash = $(patsubst %/.,%,$(patsubst %/,%,$1)) +# These are all $(call _at.func,parent,child) +#_at.relto = $(if $2,$(shell realpath -sm --relative-to='$1' $2)) +_at.is_subdir = $(filter $(abspath $1)/%,$(abspath $2)/.) +_at.relto_helper = $(if $(call _at.is_subdir,$1,$2),$(patsubst $1/%,%,$(addsuffix /.,$2)),$(addprefix ../,$(call _at.relto_helper,$(patsubst %/,%,$(dir $1)),$2))) +_at.relto = $(call _at.noslash,$(call _at.relto_helper,$(call _at.noslash,$(abspath $1)),$(call _at.noslash,$(abspath $2)))) +# Note that _at.is_subdir says that a directory is a subdirectory of +# itself. +at.path = $(foreach p,$1,$(call _at.relto,.,$p)) -_am = am_ +define at.nl -_am_noslash = $(patsubst %/.,%,$(patsubst %/,%,$1)) -# These are all $(call _am_func,parent,child) -#_am_relto = $(if $2,$(shell realpath -sm --relative-to='$1' $2)) -_am_is_subdir = $(filter $(abspath $1)/%,$(abspath $2)/.) -_am_relto_helper = $(if $(call _am_is_subdir,$1,$2),$(patsubst $1/%,%,$(addsuffix /.,$2)),$(addprefix ../,$(call _am_relto_helper,$(patsubst %/,%,$(dir $1)),$2))) -_am_relto = $(call _am_noslash,$(call _am_relto_helper,$(call _am_noslash,$(abspath $1)),$(call _am_noslash,$(abspath $2)))) -# Note that _am_is_subdir says that a directory is a subdirectory of -# itself. -am_path = $(foreach p,$1,$(call _am_relto,.,$p)) -$(_am)dirlocal += $(_am)subdirs -$(_am)dirlocal += $(_am)depdirs +endef + +at.dirlocal += at.subdirs +at.dirlocal += at.depdirs include $(topsrcdir)/common.once.head.mk -endif # _am_NO_ONCE +endif # _at.NO_ONCE # This bit gets evaluated for each Makefile ## Set outdir and srcdir (assumes that topoutdir and topsrcdir are ## already set) -outdir := $(call am_path,$(dir $(lastword $(filter-out %.mk,$(MAKEFILE_LIST))))) -srcdir := $(call am_path,$(topsrcdir)/$(call _am_relto,$(topoutdir),$(outdir))) +outdir := $(call at.path,$(dir $(lastword $(filter-out %.mk,$(MAKEFILE_LIST))))) +srcdir := $(call at.path,$(topsrcdir)/$(call _at.relto,$(topoutdir),$(outdir))) -_am_included_makefiles := $(_am_included_makefiles) $(call am_path,$(outdir)/Makefile) +_at.included_makefiles := $(_at.included_makefiles) $(call at.path,$(outdir)/Makefile) -$(foreach v,$($(_am)dirlocal),$(eval $v=)) +$(foreach v,$(at.dirlocal),$(eval $v=)) include $(topsrcdir)/common.each.head.mk diff --git a/build-aux/Makefile.once.head/00-dist.mk b/build-aux/Makefile.once.head/00-dist.mk index 5be9c72552..314f7f8f44 100644 --- a/build-aux/Makefile.once.head/00-dist.mk +++ b/build-aux/Makefile.once.head/00-dist.mk @@ -1,16 +1 @@ -# Copyright (C) 2016 Luke Shumaker -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU Affero General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Affero General Public License for more details. -# -# You should have received a copy of the GNU Affero General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -$(_am)distexts ?= .tar.gz +dist.exts ?= .tar.gz diff --git a/build-aux/Makefile.once.head/00-write-ifchanged.mk b/build-aux/Makefile.once.head/00-write-ifchanged.mk new file mode 100644 index 0000000000..79ef1c419c --- /dev/null +++ b/build-aux/Makefile.once.head/00-write-ifchanged.mk @@ -0,0 +1 @@ +WRITE_IFCHANGED = $(topsrcdir)/build-aux/write-ifchanged diff --git a/build-aux/Makefile.once.head/10-std.mk b/build-aux/Makefile.once.head/10-std.mk index dec850c240..b3d7c4aba7 100644 --- a/build-aux/Makefile.once.head/10-std.mk +++ b/build-aux/Makefile.once.head/10-std.mk @@ -17,15 +17,17 @@ all: build .PHONY: all +DESTDIR ?= + # Standard creative PHONY targets -$(_am)phony += build install installdirs +at.phony += build install installdirs # Standard destructive PHONY targets -$(_am)phony += uninstall mostlyclean clean distclean maintainer-clean +at.phony += uninstall mostlyclean clean distclean maintainer-clean -$(_am)dirlocal += $(_am)src_files -$(_am)dirlocal += $(_am)gen_files -$(_am)dirlocal += $(_am)cfg_files -$(_am)dirlocal += $(_am)out_files -$(_am)dirlocal += $(_am)sys_files -$(_am)dirlocal += $(_am)clean_files -$(_am)dirlocal += $(_am)slow_files +at.dirlocal += std.src_files +at.dirlocal += std.gen_files +at.dirlocal += std.cfg_files +at.dirlocal += std.out_files +at.dirlocal += std.sys_files +at.dirlocal += std.clean_files +at.dirlocal += std.slow_files diff --git a/build-aux/Makefile.once.head/11-gnustandards.mk b/build-aux/Makefile.once.head/11-gnustandards.mk new file mode 100644 index 0000000000..5520b9bcaf --- /dev/null +++ b/build-aux/Makefile.once.head/11-gnustandards.mk @@ -0,0 +1,181 @@ +# This file is based on ยง7.2 "Makefile Conventions" of the release of +# the GNU Coding Standards dated April 13, 2016. + +# 7.2.1: General Conventions for Makefiles +# ---------------------------------------- + +# The standards claim that every Makefile should contain +# +# SHELL = /bin/sh` +# +# but note that this is unnescesary with GNU Make. + +# 7.2.2: Utilities in Makefiles +# ----------------------------- + +# It's ok to hard-code these commands in rules, but who wants to +# memorize the list of what's ok? +AWK ?= awk +CAT ?= cat +CMP ?= cmp +CP ?= cp +DIFF ?= diff +ECHO ?= echo +EGREP ?= egrep +EXPR ?= expr +FALSE ?= false +GREP ?= grep +INSTALL_INFO ?= install-info +LN ?= ln +LS ?= ls +MKDIR ?= mkdir +MV ?= mv +PRINTF ?= printf +PWD ?= pwd +RM ?= rm +RMDIR ?= rmdir +SED ?= sed +SLEEP ?= sleep +SORT ?= sort +TAR ?= tar +TEST ?= test +TOUCH ?= touch +TR ?= tr +TRUE ?= true + +# Beyond those, define them yourself. + +# 7.2.3 Variables for Specifying Commands +# --------------------------------------- + +INSTALL ?= install +INSTALL_PROGRAM ?= $(INSTALL) +INSTALL_DATA ?= ${INSTALL} -m 644 + +# 7.2.4 DESTDIR: Support for Staged Installs +# ------------------------------------------ + +# This is done for us by the std module. + +# 7.2.5 Variables for Installation Directories +# -------------------------------------------- + +# Root for the installation +prefix ?= /usr/local +exec_prefix ?= $(prefix) +# Executable programs +bindir ?= $(exec_prefix)/bin +sbindir ?= $(exec_prefix)/sbin +libexecdir ?= $(exec_prefix)/libexec +gnu.program_dirs += $(bindir) $(sbindir) $(libexecdir) +# Data files +datarootdir ?= $(prefix)/share +datadir ?= $(datarootdir) +sysconfdir ?= $(prefix)/etc +sharedstatedir ?= $(prefix)/com +localstatedir ?= $(prefix)/var +runstatedir ?= $(localstatedir)/run +gnu.data_dirs += $(datarootdir) $(datadir) $(sysconfdir) $(sharedstatedir) $(localstatedir) $(runstatedir) +# Specific types of files +includedir ?= $(prefix)/include +oldincludedir ?= /usr/include +docdir ?= $(datarootdir)/doc/$(PACKAGE) +infodir ?= $(datarootdir)/info +htmldir ?= $(docdir) +dvidir ?= $(docdir) +pdfdir ?= $(docdir) +psdir ?= $(docdir) +libdir ?= $(exec_prefix)/lib +lispdir ?= $(datarootdir)/emacs/site-lisp +localedir ?= $(datarootdir)/locale +gnu.data_dirs += $(includedir) $(oldincludedir) $(docdir) $(infodir) $(htmldir) $(dvidir) $(pdfdir) $(psdir) $(libdir) $(lispdir) $(localedir) + +mandir ?= $(datarootdir)/man +man1dir ?= $(mandir)/man1 +man2dir ?= $(mandir)/man2 +man3dir ?= $(mandir)/man3 +man4dir ?= $(mandir)/man4 +man5dir ?= $(mandir)/man5 +man6dir ?= $(mandir)/man6 +man7dir ?= $(mandir)/man7 +man8dir ?= $(mandir)/man8 +gnu.data_dirs += $(mandir) $(man1dir) $(man2dir) $(man3dir) $(man4dir) $(man5dir) $(man6dir) $(man7dir) $(man8dir) + +manext ?= .1 +man1ext ?= .1 +man2ext ?= .2 +man3ext ?= .3 +man4ext ?= .4 +man5ext ?= .5 +man6ext ?= .6 +man7ext ?= .7 +man8ext ?= .8 + +# srcdir is handled for us by the core + +define _gnu.install_program +$$($1)/%: $$(outdir)/$$($1) + $$(NORMAL_INSTALL) + $$(INSTALL_PROGRAM) +$$($1)/%: $$(srcdir)/$$($1) + $$(NORMAL_INSTALL) + $$(INSTALL_PROGRAM) +endef +$(foreach d,$(gnu.program_dirs),$(eval $(call _gnu.install_program,$d))) + +define _gnu.install_data +$$($1)/%: $$(outdir)/$$($1) + $$(NORMAL_INSTALL) + $$(INSTALL_DATA) +$$($1)/%: $$(srcdir)/$$($1) + $$(NORMAL_INSTALL) + $$(INSTALL_DATA) +endef +$(foreach d,$(gnu.data_dirs),$(eval $(call _gnu.install_data,$d))) + +gnu.dirs += $(gnu.program_dirs) $(gnu.data_dirs) +$(gnu.dirs): + $(MKDIR_P) $@ + +# 7.2.6: Standard Targets for Users +# --------------------------------- + +gnu.info_docs ?= +std.sys_files += $(foreach f,$(gnu.info_docs), $(infodir)/$f.info ) + +#all: std +#install: std +$(outdir)/install-html: $(foreach f,$(gnu.info_docs), $(DESTDIR)$(htmldir)/$f.html ) +$(outdir)/install-dvi : $(foreach f,$(gnu.info_docs), $(DESTDIR)$(dvidir)/$f.dvi ) +$(outdir)/install-pdf : $(foreach f,$(gnu.info_docs), $(DESTDIR)$(pdfdir)/$f.pdf ) +$(outdir)/install-ps : $(foreach f,$(gnu.info_docs), $(DESTDIR)$(psdir)/$f.ps ) +#uninstall: std +$(outdir)/install-strip: install + $(STRIP $(filter $(bindir)/% $(sbindir)/% $(libexecdir)/%,$(std.sys_files/$(@D))) +#clean: std +#distclean: std +#mostlyclean: std +#maintainer-clean: std +TAGS: TODO +$(outdir)/info: $(addsuffix .info,$(gnu.info_docs)) +$(outdir)/dvi : $(addsuffix .dvi ,$(gnu.info_docs)) +$(outdir)/html: $(addsuffix .html,$(gnu.info_docs)) +$(outdir)/pdf : $(addsuffix .pdf ,$(gnu.info_docs)) +$(outdir)/ps : $(addsuffix .ps ,$(gnu.info_docs)) +#dist:dist +check: TODO +installcheck: TODO +#installdirs: std + +$(outdir)/%.info: $(srcdir)/%.texi; $(MAKEINFO) -o $(@D) $< +$(outdir)/%.dvi : $(srcdir)/%.texi; $(TEXI2DVI) -o $(@D) $< +$(outdir)/%.html: $(srcdir)/%.texi; $(TEXI2HTML) -o $(@D) $< +$(outdir)/%.pdf : $(srcdir)/%.texi; $(TEXI2PDF) -o $(@D) $< +$(outdir)/%.ps : $(srcdir)/%.texi; $(TEXI2PS) -o $(@D) $< + + + +#installdirs: std + +# 7.2.7: Standard Targets for Users +# --------------------------------- diff --git a/build-aux/Makefile.once.tail/00-dist.mk b/build-aux/Makefile.once.tail/00-dist.mk index 2527404e6b..d8fa226eb9 100644 --- a/build-aux/Makefile.once.tail/00-dist.mk +++ b/build-aux/Makefile.once.tail/00-dist.mk @@ -17,10 +17,7 @@ .PHONY: dist dist: $(addprefix $(topoutdir)/$(PACKAGE)-$(VERSION),$($(_am)distexts) -$(topoutdir)/$(PACKAGE)-$(VERSION).tar: $(topoutdir)/$(PACKAGE)-$(VERSION) - $(TAR) cf $@ -C $(<D) $(<F) - -_am_copyfile = $(MKDIRS) $(dir $2) && $(CP) -T $1 $2 +_am_copyfile = $(MKDIR_P) $(dir $2) && $(CP) -T $1 $2 _am_addfile = $(call _am_copyfile,$3,$2/$(call _am_relto,$1,$3)) $(topoutdir)/$(PACKAGE)-$(VERSION): $(_am_src_files/$(topoutdir)) $(_am_gen_files/$(topoutdir)) $(RM) -r $@ @@ -29,12 +26,19 @@ $(topoutdir)/$(PACKAGE)-$(VERSION): $(_am_src_files/$(topoutdir)) $(_am_gen_file $(foreach f,$^,$(call _am_addfile,$(topsrcdir),$(@D)/tmp.$(@F).$$$$,$f) &&) \ $(MV) $(@D)/tmp.$(@F).$$$$ $@ || $(RM) -r $(@D)/tmp.$(@F).$$$$ -# For some reason I can't explain, RM doesn't really get set with ?= -CP ?= cp -MKDIR ?= mkdir -MKDIRS ?= mkdir -p -MV ?= mv -RM = rm -f -RMDIRS ?= rmdir -p -TAR ?= tar -TRUE ?= true +$(topoutdir)/$(PACKAGE)-$(VERSION).tar: $(topoutdir)/$(PACKAGE)-$(VERSION) + $(TAR) cf $@ -C $(<D) $(<F) +$(topoutdir)/$(PACKAGE)-$(VERSION).tar.gz: $(topoutdir)/$(PACKAGE)-$(VERSION).tar + $(GZIP) $(GZIP_ENV) < $< > $@ + +CP ?= cp +GZIP ?= gzip +MKDIR ?= mkdir +MKDIR_P ?= mkdir -p +MV ?= mv +RM ?= rm -f +RMDIR_P ?= rmdir -p +TAR ?= tar +TRUE ?= true + +GZIP_ENV ?= --best diff --git a/build-aux/Makefile.tail.mk b/build-aux/Makefile.tail.mk index 472d2dba0a..bb197dcfd9 100644 --- a/build-aux/Makefile.tail.mk +++ b/build-aux/Makefile.tail.mk @@ -18,35 +18,30 @@ include $(wildcard $(topsrcdir)/build-aux/Makefile.each.tail/*.mk) # Make the namespaced versions of all of the dirlocal variables -$(foreach v,$($(_am)dirlocal),$(eval $v/$(outdir) = $($v))) +$(foreach v,$(at.dirlocal),$(eval $v/$(outdir) = $($v))) # Remember that this is a directory that we've visited -_am_outdirs := $(_am_outdirs) $(outdir) +_at.outdirs := $(_at.outdirs) $(outdir) # Generic phony target declarations: # mark them phony -.PHONY: $(addprefix $(outdir)/,$($(_am)phony)) +.PHONY: $(addprefix $(outdir)/,$(at.phony)) # have them depend on subdirs -$(foreach t,$($(_am)phony),$(eval $(outdir)/$t: $(addsuffix /$t,$(subdirs)))) +$(foreach t,$(at.phony),$(eval $(outdir)/$t: $(addsuffix /$t,$(subdirs)))) # Include Makefiles from other directories - -define _am_nl - - -endef -$(foreach _am_NO_ONCE,y,\ - $(foreach makefile,$(call am_path,$(addsuffix /Makefile,$($(_am)subdirs) $($(_am)depdirs))),\ - $(eval include $(filter-out $(_am_included_makefiles),$(makefile))))) +$(foreach _at.NO_ONCE,y,\ + $(foreach makefile,$(call am_path,$(addsuffix /Makefile,$(at.subdirs) $(at.depdirs))),\ + $(eval include $(filter-out $(_at.included_makefiles),$(makefile))))) # This bit only gets evaluated once, after all of the other Makefiles are read -ifeq ($(_am_NO_ONCE),) +ifeq ($(_at.NO_ONCE),) outdir = /bogus srcdir = /bogus -$(foreach v,$($(_am)dirlocal),$(eval $v=)) +$(foreach v,$(at.dirlocal),$(eval $v=)) include $(wildcard $(topsrcdir)/build-aux/Makefile.once.tail/*.mk) -endif # _am_NO_ONCE +endif # _at.NO_ONCE diff --git a/build-aux/write-ifchanged b/build-aux/write-ifchanged new file mode 100755 index 0000000000..185ceb0039 --- /dev/null +++ b/build-aux/write-ifchanged @@ -0,0 +1,25 @@ +#!/usr/bin/env bash +# Copyright (C) 2015 Luke Shumaker +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Affero General Public License for more details. +# +# You should have received a copy of the GNU Affero General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +outfile=$1 +tmpfile="$(dirname "$outfile")/.tmp${outfile##*/}" + +cat > "$tmpfile" || exit $? +if cmp -s "$tmpfile" "$outfile"; then + rm -f "$tmpfile" || : +else + mv -f "$tmpfile" "$outfile" +fi |