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88 lines
2.9 KiB
Makefile
88 lines
2.9 KiB
Makefile
# Build Emacs from a fresh tarball or version-control checkout.
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# Copyright (C) 2011-2017 Free Software Foundation, Inc.
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#
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# This file is part of GNU Emacs.
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#
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# GNU Emacs is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# GNU Emacs is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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#
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# written by Paul Eggert
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# This GNUmakefile is for GNU Make. It is for convenience, so that
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# one can run 'make' in an unconfigured source tree. In such a tree,
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# this file causes GNU Make to first create a standard configuration
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# with the default options, and then reinvokes itself on the
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# newly-built Makefile. If the source tree is already configured,
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# this file defers to the existing Makefile.
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# If you are using a non-GNU 'make', or if you want non-default build
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# options, or if you want to build in an out-of-source tree, please
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# run "configure" by hand. But run autogen.sh first, if the source
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# was checked out directly from the repository.
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# If a Makefile already exists, just use it.
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ifeq ($(wildcard Makefile),Makefile)
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include Makefile
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else
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# If cleaning and Makefile does not exist, don't bother creating it.
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# The source tree is already clean, or is in a weird state that
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# requires expert attention.
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ifeq ($(filter-out %clean,$(or $(MAKECMDGOALS),default)),)
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$(MAKECMDGOALS):
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@echo >&2 'No Makefile; skipping $@.'
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else
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# No Makefile, and not cleaning.
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# If 'configure' does not exist, Emacs must have been checked
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# out directly from the repository; run ./autogen.sh.
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# Once 'configure' exists, run it.
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# Finally, run the actual 'make'.
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ORDINARY_GOALS = $(filter-out configure Makefile bootstrap,$(MAKECMDGOALS))
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default $(ORDINARY_GOALS): Makefile
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$(MAKE) -f Makefile $(MAKECMDGOALS)
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# Execute in sequence, so that multiple user goals don't conflict.
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.NOTPARALLEL:
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# 'all' if a .git subdirectory is present, empty otherwise.
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ALL_IF_GIT = $(subst .git,all,$(wildcard .git))
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configure:
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@echo >&2 'There seems to be no "configure" file in this directory.'
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@echo >&2 Running ./autogen.sh $(ALL_IF_GIT) ...
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./autogen.sh $(ALL_IF_GIT)
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@echo >&2 '"configure" file built.'
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Makefile: configure
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@echo >&2 'There seems to be no Makefile in this directory.'
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@echo >&2 'Running ./configure ...'
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./configure
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@echo >&2 'Makefile built.'
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# 'make bootstrap' in a fresh checkout needn't run 'configure' twice.
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bootstrap: Makefile
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$(MAKE) -f Makefile all
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.PHONY: bootstrap default $(ORDINARY_GOALS)
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endif
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endif
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