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| 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, 2006-2025 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 <https://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 --sort=name |
| 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 | +# This is not part of the essential workflow with .tarball-version. Rather, |
| 48 | +# it is meant to help the maintainer who has changed the current version |
| 49 | +# but not done a "make distclean". |
| 50 | +_have-git-version-gen := \ |
| 51 | + $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes) |
| 52 | +ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL)) |
| 53 | + _is-dist-target ?= $(filter-out %clean, \ |
| 54 | + $(filter maintainer-% dist% alpha beta stable,$(MAKECMDGOALS))) |
| 55 | + _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS))) |
| 56 | + ifneq (,$(_is-dist-target)$(_is-install-target)) |
| 57 | + _curr-ver := $(shell cd $(srcdir) \ |
| 58 | + && $(_build-aux)/git-version-gen \ |
| 59 | + .tarball-version \ |
| 60 | + $(git-version-gen-tag-sed-script)) |
| 61 | + ifneq ($(_curr-ver),$(VERSION)) |
| 62 | + ifeq ($(_curr-ver),UNKNOWN) |
| 63 | + $(info WARNING: unable to verify if $(VERSION) is the correct version) |
| 64 | + else |
| 65 | + ifneq (,$(_is-install-target)) |
| 66 | + # GNU Coding Standards state that 'make install' should not cause |
| 67 | + # recompilation after 'make all'. But as long as changing the version |
| 68 | + # string alters config.h, the cost of having 'make all' always have an |
| 69 | + # up-to-date version is prohibitive. So, as a compromise, we merely |
| 70 | + # warn when installing a version string that is out of date; the user |
| 71 | + # should run 'autoreconf' (or something like 'make distcheck') to |
| 72 | + # fix the version, 'make all' to propagate it, then 'make install'. |
| 73 | + $(info WARNING: version string $(VERSION) is out of date;) |
| 74 | + $(info run '$(MAKE) _version' to fix it) |
| 75 | + else |
| 76 | + $(info INFO: running autoreconf for new version string: $(_curr-ver)) |
| 77 | +GNUmakefile: _version |
| 78 | + touch GNUmakefile |
| 79 | + endif |
| 80 | + endif |
| 81 | + endif |
| 82 | + endif |
| 83 | +endif |
| 84 | + |
| 85 | +.PHONY: _version |
| 86 | +_version: |
| 87 | + cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf) |
| 88 | + $(MAKE) $(AM_MAKEFLAGS) Makefile |
| 89 | + |
| 90 | +else |
| 91 | + |
| 92 | +.DEFAULT_GOAL := abort-due-to-no-makefile |
| 93 | +srcdir = . |
| 94 | + |
| 95 | +# The package can override .DEFAULT_GOAL to run actions like autoreconf. |
| 96 | +-include ./cfg.mk |
| 97 | + |
| 98 | +# Allow cfg.mk to override these. |
| 99 | +_build-aux ?= build-aux |
| 100 | +_autoreconf ?= autoreconf -v |
| 101 | + |
| 102 | +include ./maint.mk |
| 103 | + |
| 104 | +ifeq ($(.DEFAULT_GOAL),abort-due-to-no-makefile) |
| 105 | +$(MAKECMDGOALS): abort-due-to-no-makefile |
| 106 | +endif |
| 107 | + |
| 108 | +abort-due-to-no-makefile: |
| 109 | + @echo There seems to be no Makefile in this directory. 1>&2 |
| 110 | + @echo "You must run ./configure before running '$(MAKE)'." 1>&2 |
| 111 | + @exit 1 |
| 112 | + |
| 113 | +endif |
| 114 | + |
| 115 | +# Tell version 3.79 and up of GNU make to not build goals in this |
| 116 | +# directory in parallel, in case someone tries to build multiple |
| 117 | +# targets, and one of them can cause a recursive target to be invoked. |
| 118 | + |
| 119 | +# Only set this if Automake doesn't provide it. |
| 120 | +AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \ |
| 121 | + $(RECURSIVE_CLEAN_TARGETS:-recursive=) \ |
| 122 | + dist distcheck tags ctags |
| 123 | + |
| 124 | +ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS) |
| 125 | + |
| 126 | +ifneq ($(word 2, $(MAKECMDGOALS)), ) |
| 127 | +ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), ) |
| 128 | +.NOTPARALLEL: |
| 129 | +endif |
| 130 | +endif |
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