Makefile - master - githubmirror/riscv-port

Makefile
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Magnus Ihse Bursie
8349515: [REDO] Framework for tracing makefile inclusion and parsing
11 фев 2025, 13:55
11 фев 2025, 13:55964dd18
#
# Copyright (c) 2012, 2025, 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).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#

###
### This file is just a very small wrapper which will include make/PreInit.gmk,
### where the real work is done. This wrapper also performs some sanity checks
### on make that must be done before we can include another file.
###

# The shell code below will be executed on /usr/bin/make on Solaris, but not in GNU Make.
# /usr/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 to bootstrap the build
include $(TOPDIR)/make/PreInit.gmk