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, 2006-2011 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# Systems where /bin/sh is not the default shell need this. The $(shell) 24# command below won't work with e.g. stock DOS/Windows shells. 25ifeq ($(wildcard /bin/s[h]),/bin/sh) 26SHELL = /bin/sh 27else 28# will be used only with the next shell-test line, then overwritten 29# by a configured-in value 30SHELL = sh 31endif 32 33srcdir = . 34top_srcdir = . 35 36# Make tar archive easier to reproduce. 37export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner 38 39# Allow the user to add to this in the Makefile. 40ALL_RECURSIVE_TARGETS = 41 42# Some projects override e.g., _autoreconf here. 43-include $(srcdir)/cfg.mk 44 45# Allow cfg.mk to override these. 46_build-aux ?= build-aux 47_autoreconf ?= autoreconf -v 48 49include $(srcdir)/maint.mk 50 51# Ensure that $(VERSION) is up to date for dist-related targets, but not 52# for others: rerunning autoreconf and recompiling everything isn't cheap. 53_have-git-version-gen := \ 54 $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes) 55ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL)) 56 _is-dist-target ?= $(filter-out %clean, \ 57 $(filter maintainer-% dist% alpha beta stable,$(MAKECMDGOALS))) 58 _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS))) 59 ifneq (,$(_is-dist-target)$(_is-install-target)) 60 _curr-ver := $(shell cd $(srcdir) \ 61 && $(_build-aux)/git-version-gen \ 62 .tarball-version \ 63 $(git-version-gen-tag-sed-script)) 64 ifneq ($(_curr-ver),$(VERSION)) 65 ifeq ($(_curr-ver),UNKNOWN) 66 $(info WARNING: unable to verify if $(VERSION) is the correct version) 67 else 68 ifneq (,$(_is-install-target)) 69 # GNU Coding Standards state that 'make install' should not cause 70 # recompilation after 'make all'. But as long as changing the version 71 # string alters config.h, the cost of having 'make all' always have an 72 # up-to-date version is prohibitive. So, as a compromise, we merely 73 # warn when installing a version string that is out of date; the user 74 # should run 'autoreconf' (or something like 'make distcheck') to 75 # fix the version, 'make all' to propagate it, then 'make install'. 76 $(info WARNING: version string $(VERSION) is out of date;) 77 $(info run '$(MAKE) _version' to fix it) 78 else 79 $(info INFO: running autoreconf for new version string: $(_curr-ver)) 80GNUmakefile: _version 81 touch GNUmakefile 82 endif 83 endif 84 endif 85 endif 86endif 87 88.PHONY: _version 89_version: 90 cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf) 91 $(MAKE) $(AM_MAKEFLAGS) Makefile 92 93 94# Tell version 3.79 and up of GNU make to not build goals in this 95# directory in parallel, in case someone tries to build multiple 96# targets, and one of them can cause a recursive target to be invoked. 97 98# Only set this if Automake doesn't provide it. 99AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \ 100 $(RECURSIVE_CLEAN_TARGETS:-recursive=) \ 101 dist distcheck tags ctags 102 103ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS) 104 105ifneq ($(word 2, $(MAKECMDGOALS)), ) 106ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), ) 107.NOTPARALLEL: 108endif 109endif 110