Make.linux

#
# $Id: Make.linux 1.14 Broadcom SDK $
# $Copyright: Copyright 2011 Broadcom Corporation.
# This program is the proprietary software of Broadcom Corporation
# and/or its licensors, and may only be used, duplicated, modified
# or distributed pursuant to the terms and conditions of a separate,
# written license agreement executed between you and Broadcom
# (an "Authorized License").  Except as set forth in an Authorized
# License, Broadcom grants no license (express or implied), right
# to use, or waiver of any kind with respect to the Software, and
# Broadcom expressly reserves all rights in and to the Software
# and all intellectual property rights therein.  IF YOU HAVE
# NO AUTHORIZED LICENSE, THEN YOU HAVE NO RIGHT TO USE THIS SOFTWARE
# IN ANY WAY, AND SHOULD IMMEDIATELY NOTIFY BROADCOM AND DISCONTINUE
# ALL USE OF THE SOFTWARE.  
#  
# Except as expressly set forth in the Authorized License,
#  
# 1.     This program, including its structure, sequence and organization,
# constitutes the valuable trade secrets of Broadcom, and you shall use
# all reasonable efforts to protect the confidentiality thereof,
# and to use this information only in connection with your use of
# Broadcom integrated circuit products.
#  
# 2.     TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS
# PROVIDED "AS IS" AND WITH ALL FAULTS AND BROADCOM MAKES NO PROMISES,
# REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY,
# OR OTHERWISE, WITH RESPECT TO THE SOFTWARE.  BROADCOM SPECIFICALLY
# DISCLAIMS ANY AND ALL IMPLIED WARRANTIES OF TITLE, MERCHANTABILITY,
# NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF VIRUSES,
# ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
# CORRESPONDENCE TO DESCRIPTION. YOU ASSUME THE ENTIRE RISK ARISING
# OUT OF USE OR PERFORMANCE OF THE SOFTWARE.
# 
# 3.     TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT SHALL
# BROADCOM OR ITS LICENSORS BE LIABLE FOR (i) CONSEQUENTIAL,
# INCIDENTAL, SPECIAL, INDIRECT, OR EXEMPLARY DAMAGES WHATSOEVER
# ARISING OUT OF OR IN ANY WAY RELATING TO YOUR USE OF OR INABILITY
# TO USE THE SOFTWARE EVEN IF BROADCOM HAS BEEN ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGES; OR (ii) ANY AMOUNT IN EXCESS OF
# THE AMOUNT ACTUALLY PAID FOR THE SOFTWARE ITSELF OR USD 1.00,
# WHICHEVER IS GREATER. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING
# ANY FAILURE OF ESSENTIAL PURPOSE OF ANY LIMITED REMEDY.$
# 
# Common make targets for Linux user and kernel builds included by top
# level Linux makefiles
#
# Variables referenced:
#
# LINUX_MAKE_FLAGS
#   Additional flags passed to Make
#
# LINUX_MAKE_USER
#   Defined: user build
#   Undefined: kernel build
#
# LINUX_MAKE_DIR
#   Common makefile location, if it is not ../common
#
#

export DEST_DIR_SUFFIX :=$(subst $(realpath $(SDK))/systems,,$(realpath $(CURDIR)/$(dir ($(firstword $(MAKEFILE_LIST))))))

ifeq (,$(kernel_version))
kernel_version=2_4
endif

ifndef LINUX_MAKE_SHARED_LIB
LINUX_MAKE_SHARED_LIB=0
endif

ifeq (,$(SHAREDLIBVER))
SHAREDLIBVER=1
endif

ifndef LINUX_MAKE_DIR
ifdef LINUX_MAKE_USER
LINUX_MAKE_DIR := $(SDK)/systems/linux/user/common
else
LINUX_MAKE_DIR := $(SDK)/systems/linux/kernel/common
endif
endif

ifdef LINUX_MAKE_USER
  CMD = $(LINUX_MAKE_FLAGS) -C $(LINUX_MAKE_DIR) \
        platform=$(platform) bldroot_suffix=/$(platform) kernel_version=$(kernel_version) \
        LINUX_MAKE_SHARED_LIB=$(LINUX_MAKE_SHARED_LIB) SHAREDLIBVER=$(SHAREDLIBVER)
else
  CMD = $(LINUX_MAKE_FLAGS) -C $(LINUX_MAKE_DIR) \
        platform=$(platform) kernel_version=$(kernel_version)
endif

ifneq (,$(MIPS_TOOLS_DIR))
  CMD += MIPS_TOOLS_DIR=$(MIPS_TOOLS_DIR)
endif

ifneq (,$(MIPS_CROSS_COMPILE))
  CMD += MIPS_CROSS_COMPILE=$(MIPS_CROSS_COMPILE)
endif

ifneq (,$(LINUX_INCLUDE))
  CMD += LINUX_INCLUDE=$(LINUX_INCLUDE)
endif


# gmake does not understand $(CMD) to be a submake
# options are to +$(CMD) or $(MAKE) $(CMD)
# trying the latter
build:
	$(MAKE) $(CMD)

DELIVER clean C_COMPILER CXX_COMPILER variable:
	$(MAKE) $(CMD) $@

distclean clean_d: clean

.PHONY: build clean distclean clean_d DELIVER variable