# Build Emacs from a fresh tarball or version-control checkout. # Copyright (C) 2011-2016 Free Software Foundation, Inc. # # This file is part of GNU Emacs. # # GNU Emacs is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # GNU Emacs 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 General Public License for more details. # # You should have received a copy of the GNU General Public License # along with GNU Emacs. If not, see . # # written by Paul Eggert # This GNUmakefile is for GNU Make. It is for convenience, so that # one can run 'make' in an unconfigured source tree. In such a tree, # this file causes GNU Make to first create a standard configuration # with the default options, and then reinvokes itself on the # newly-built Makefile. If the source tree is already configured, # this file defers to the existing Makefile. # If you are using a non-GNU 'make', or if you want non-default build # options, or if you want to build in an out-of-source tree, please # run "configure" by hand. But run autogen.sh first, if the source # was checked out directly from the repository. # If a Makefile already exists, just use it. ifeq ($(wildcard Makefile),Makefile) include Makefile else # If cleaning and Makefile does not exist, don't bother creating it. # The source tree is already clean, or is in a weird state that # requires expert attention. ifeq ($(filter-out %clean,$(or $(MAKECMDGOALS),default)),) $(MAKECMDGOALS): @echo >&2 'No Makefile; skipping $@.' else # No Makefile, and not cleaning. # If 'configure' does not exist, Emacs must have been checked # out directly from the repository; run ./autogen.sh. # Once 'configure' exists, run it. # Finally, run the actual 'make'. ORDINARY_GOALS = $(filter-out configure Makefile bootstrap,$(MAKECMDGOALS)) default $(ORDINARY_GOALS): Makefile $(MAKE) -f Makefile $(MAKECMDGOALS) # Execute in sequence, so that multiple user goals don't conflict. .NOTPARALLEL: # 'all' if a .git subdirectory is present, empty otherwise. ALL_IF_GIT = $(subst .git,all,$(wildcard .git)) configure: @echo >&2 'There seems to be no "configure" file in this directory.' @echo >&2 Running ./autogen.sh $(ALL_IF_GIT) ... ./autogen.sh $(ALL_IF_GIT) @echo >&2 '"configure" file built.' Makefile: configure @echo >&2 'There seems to be no Makefile in this directory.' @echo >&2 'Running ./configure ...' ./configure @echo >&2 'Makefile built.' # 'make bootstrap' in a fresh checkout needn't run 'configure' twice. bootstrap: Makefile $(MAKE) -f Makefile all .PHONY: bootstrap default $(ORDINARY_GOALS) endif endif