#

# Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code 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

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

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# 2 along with this work; if not, write to the Free Software Foundation,

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#

###

### This file is just a very small wrapper needed to run the real make/Init.gmk.

### It also performs some sanity checks on make.

###

# The shell code below will be executed on /usr/ccs/bin/make on Solaris, but not in GNU Make.

# /usr/ccs/bin/make lacks basically every other flow control mechanism.

.TEST_FOR_NON_GNUMAKE:sh=echo You are not using GNU Make/gmake, this is a requirement. Check your path. 1>&2 && exit 1

# The .FEATURES variable is likely to be unique for GNU Make.

ifeq ($(.FEATURES), )

  $(info Error: '$(MAKE)' does not seem to be GNU Make, which is a requirement.)

  $(info Check your path, or upgrade to GNU Make 3.81 or newer.)

  $(error Cannot continue)

endif

# Assume we have GNU Make, but check version.

ifeq ($(strip $(foreach v, 3.81% 3.82% 4.%, $(filter $v, $(MAKE_VERSION)))), )

  $(info Error: This version of GNU Make is too low ($(MAKE_VERSION)).)

  $(info Check your path, or upgrade to GNU Make 3.81 or newer.)

  $(error Cannot continue)

endif

# In Cygwin, the MAKE variable gets prepended with the current directory if the

# make executable is called using a Windows mixed path (c:/cygwin/bin/make.exe).

ifneq ($(findstring :, $(MAKE)), )

  MAKE := $(patsubst $(CURDIR)%, %, $(patsubst $(CURDIR)/%, %, $(MAKE)))

endif

# Locate this Makefile

ifeq ($(filter /%, $(lastword $(MAKEFILE_LIST))),)

  makefile_path := $(CURDIR)/$(strip $(lastword $(MAKEFILE_LIST)))

else

  makefile_path := $(lastword $(MAKEFILE_LIST))

endif

topdir := $(strip $(patsubst %/, %, $(dir $(makefile_path))))

# ... and then we can include the real makefile

include $(topdir)/make/Init.gmk