1 # Having a separate GNUmakefile lets me 'include' the dynamically 2 # generated rules created via cfg.mk (package-local configuration) 3 # as well as maint.mk (generic maintainer rules). 4 # This makefile is used only if you run GNU Make. 5 # It is necessary if you want to build targets usually of interest 6 # only to the maintainer. 7 8 # Copyright (C) 2001, 2003, 2006-2012 Free Software Foundation, Inc. 9 10 # This program is free software: you can redistribute it and/or modify 11 # it under the terms of the GNU General Public License as published by 12 # the Free Software Foundation, either version 3 of the License, or 13 # (at your option) any later version. 14 15 # This program is distributed in the hope that it will be useful, 16 # but WITHOUT ANY WARRANTY; without even the implied warranty of 17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 # GNU General Public License for more details. 19 20 # You should have received a copy of the GNU General Public License 21 # along with this program. If not, see <http://www.gnu.org/licenses/>. 22 23 # If the user runs GNU make but has not yet run ./configure, 24 # give them a diagnostic. 25 _gl-Makefile := $(wildcard [M]akefile) 26 ifneq ($(_gl-Makefile),) 27 28 # Make tar archive easier to reproduce. 29 export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner 30 31 # Allow the user to add to this in the Makefile. 32 ALL_RECURSIVE_TARGETS = 33 34 include Makefile 35 36 # Some projects override e.g., _autoreconf here. 37 -include $(srcdir)/cfg.mk 38 39 # Allow cfg.mk to override these. 40 _build-aux ?= build-aux 41 _autoreconf ?= autoreconf -v 42 43 include $(srcdir)/maint.mk 44 45 # Ensure that $(VERSION) is up to date for dist-related targets, but not 46 # for others: rerunning autoreconf and recompiling everything isn't cheap. 47 _have-git-version-gen := \ 48 $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes) 49 ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL)) 50 _is-dist-target ?= $(filter-out %clean, \ 51 $(filter maintainer-% dist% alpha beta stable,$(MAKECMDGOALS))) 52 _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS))) 53 ifneq (,$(_is-dist-target)$(_is-install-target)) 54 _curr-ver := $(shell cd $(srcdir) \ 55 && $(_build-aux)/git-version-gen \ 56 .tarball-version \ 57 $(git-version-gen-tag-sed-script)) 58 ifneq ($(_curr-ver),$(VERSION)) 59 ifeq ($(_curr-ver),UNKNOWN) 60 $(info WARNING: unable to verify if $(VERSION) is the correct version) 61 else 62 ifneq (,$(_is-install-target)) 63 # GNU Coding Standards state that 'make install' should not cause 64 # recompilation after 'make all'. But as long as changing the version 65 # string alters config.h, the cost of having 'make all' always have an 66 # up-to-date version is prohibitive. So, as a compromise, we merely 67 # warn when installing a version string that is out of date; the user 68 # should run 'autoreconf' (or something like 'make distcheck') to 69 # fix the version, 'make all' to propagate it, then 'make install'. 70 $(info WARNING: version string $(VERSION) is out of date;) 71 $(info run '$(MAKE) _version' to fix it) 72 else 73 $(info INFO: running autoreconf for new version string: $(_curr-ver)) 74 GNUmakefile: _version 75 touch GNUmakefile 76 endif 77 endif 78 endif 79 endif 80 endif 81 82 .PHONY: _version 83 _version: 84 cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf) 85 $(MAKE) $(AM_MAKEFLAGS) Makefile 86 87 else 88 89 .DEFAULT_GOAL := abort-due-to-no-makefile 90 srcdir = . 91 92 # The package can override .DEFAULT_GOAL to run actions like autoreconf. 93 -include ./cfg.mk 94 95 # Allow cfg.mk to override these. 96 _build-aux ?= build-aux 97 _autoreconf ?= autoreconf -v 98 99 include ./maint.mk 100 101 ifeq ($(.DEFAULT_GOAL),abort-due-to-no-makefile) 102 $(MAKECMDGOALS): abort-due-to-no-makefile 103 endif 104 105 abort-due-to-no-makefile: 106 @echo There seems to be no Makefile in this directory. 1>&2 107 @echo "You must run ./configure before running 'make'." 1>&2 108 @exit 1 109 110 endif 111 112 # Tell version 3.79 and up of GNU make to not build goals in this 113 # directory in parallel, in case someone tries to build multiple 114 # targets, and one of them can cause a recursive target to be invoked. 115 116 # Only set this if Automake doesn't provide it. 117 AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \ 118 $(RECURSIVE_CLEAN_TARGETS:-recursive=) \ 119 dist distcheck tags ctags 120 121 ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS) 122 123 ifneq ($(word 2, $(MAKECMDGOALS)), ) 124 ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), ) 125 .NOTPARALLEL: 126 endif 127 endif 128
