65 lines
2.7 KiB
Makefile
65 lines
2.7 KiB
Makefile
#
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# Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#
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# This code is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 only, as
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# published by the Free Software Foundation. Oracle designates this
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# particular file as subject to the "Classpath" exception as provided
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# by Oracle in the LICENSE file that accompanied this code.
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#
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# This code is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# version 2 for more details (a copy is included in the LICENSE file that
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# accompanied this code).
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#
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# You should have received a copy of the GNU General Public License version
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# 2 along with this work; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#
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###
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### This file is just a very small wrapper needed to run the real make/Init.gmk.
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### It also performs some sanity checks on make.
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###
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# The shell code below will be executed on /usr/bin/make on Solaris, but not in GNU Make.
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# /usr/bin/make lacks basically every other flow control mechanism.
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.TEST_FOR_NON_GNUMAKE:sh=echo You are not using GNU Make/gmake, this is a requirement. Check your path. 1>&2 && exit 1
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# The .FEATURES variable is likely to be unique for GNU Make.
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ifeq ($(.FEATURES), )
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$(info Error: '$(MAKE)' does not seem to be GNU Make, which is a requirement.)
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$(info Check your path, or upgrade to GNU Make 3.81 or newer.)
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$(error Cannot continue)
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endif
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# Assume we have GNU Make, but check version.
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ifeq ($(strip $(foreach v, 3.81% 3.82% 4.%, $(filter $v, $(MAKE_VERSION)))), )
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$(info Error: This version of GNU Make is too low ($(MAKE_VERSION)).)
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$(info Check your path, or upgrade to GNU Make 3.81 or newer.)
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$(error Cannot continue)
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endif
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# In Cygwin, the MAKE variable gets prepended with the current directory if the
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# make executable is called using a Windows mixed path (c:/cygwin/bin/make.exe).
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ifneq ($(findstring :, $(MAKE)), )
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MAKE := $(patsubst $(CURDIR)%, %, $(patsubst $(CURDIR)/%, %, $(MAKE)))
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endif
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# Locate this Makefile
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ifeq ($(filter /%, $(lastword $(MAKEFILE_LIST))),)
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makefile_path := $(CURDIR)/$(strip $(lastword $(MAKEFILE_LIST)))
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else
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makefile_path := $(lastword $(MAKEFILE_LIST))
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endif
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topdir := $(strip $(patsubst %/, %, $(dir $(makefile_path))))
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# ... and then we can include the real makefile
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include $(topdir)/make/Init.gmk
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