sonic-buildimage/platform/broadcom/saibcm-modules/make/Makefile.linux-x86-generic-common-2_6

#
#  Copyright 2007-2020 Broadcom Inc. All rights reserved.
#  
#  Permission is granted to use, copy, modify and/or distribute this
#  software under either one of the licenses below.
#  
#  License Option 1: GPL
#  
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License, version 2, as
#  published by the Free Software Foundation (the "GPL").
#  
#  This program 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 (GPLv2) for more details.
#  
#  You should have received a copy of the GNU General Public License
#  version 2 (GPLv2) along with this source code.
#  
#  
#  License Option 2: Broadcom Open Network Switch APIs (OpenNSA) license
#  
#  This software is governed by the Broadcom Open Network Switch APIs license:
#  https://www.broadcom.com/products/ethernet-connectivity/software/opennsa
#
# $Id: Makefile.linux-x86-generic-common-2_6,v 1.2 Broadcom SDK $
# $Copyright: (c) 2008 Broadcom Corp.
# All Rights Reserved.$

# Default kernel source directory
ifeq (,$(KERNDIR))
KERNDIR := /lib/modules/$(shell uname -r)/build
export KERNDIR
endif

# Default architecture
ifeq (,$(ARCH))
ARCH = $(shell uname -p)
ifneq (x86_64,$(ARCH))
ARCH = i386
endif
endif

# Noisy kernel build
KBUILD_VERBOSE = 1

export ARCH KBUILD_VERBOSE KERNDIR

# Default Linux include directory
ifeq (,$(LINUX_INCLUDE))
LINUX_INCLUDE := $(KERNDIR)/include
endif

# autoconf.h was moved in later kernels
AUTOCONF = $(KERNDIR)/include/generated/autoconf.h
ifeq (,$(shell ls $(AUTOCONF) 2>/dev/null))
AUTOCONF = $(KERNDIR)/include/linux/autoconf.h
endif

# gcc system include path
SYSINC = $(shell $(CC) -print-search-dirs | grep install | cut -c 10-)include