#
#    Copyright (c) 2012 Nest Labs, Inc.
#    All rights reserved.
#
#    This document is the property of Nest. It is considered
#    confidential and proprietary information.
#
#    This document may not be reproduced or transmitted in any form,
#    in whole or in part, without the express written permission of
#    Nest.
#
#    Description:
#      This file is the make file for LwIP, a Lightweight IPv4-
#      and IPv6 TCP/IP stack.
#

BuildConfigSpecialized			:= Yes
BuildProductSpecialized 		:= Yes

include pre.mak

PackageRoot				:= .

PackageName				:= lwip

PackageSourceDir			:= $(LwipSrcPath)/$(PackageName)

GeneratePackagePaths			= $(addprefix $(call Slashify,$(PackageSourceDir)),$(1))

LicenseSourceFile			:= $(PackageSourceDir)/COPYING

all: $(PackageDefaultGoal)

# Generate the package license contents.

$(LicenseSourceFile): source

$(PackageLicenseFile): $(LicenseSourceFile)
	$(copy-result)

# We are building this package from version-controlled source, so
# there is nothing to do for this target goal.

$(PackageSourceDir):

# Prepare the sources.

.PHONY: source
source: | $(PackageSourceDir)

# Patch the sources, if necessary.

.PHONY: patch
patch: source

# Configure the source for building.

.PHONY: configure
configure: source

# Build the source.

.PHONY: build
build: configure

.PHONY: stage
stage: build | $(ResultDirectory)

lwip_API_PATHS			= src/api/api_lib.c		\
				  src/api/api_msg.c		\
				  src/api/err.c			\
				  src/api/netbuf.c		\
				  src/api/netdb.c		\
				  src/api/netifapi.c		\
				  src/api/sockets.c		\
				  src/api/tcpip.c

lwip_CORE_PATHS			= src/core/def.c		\
				  src/core/dhcp.c		\
				  src/core/dns.c		\
				  src/core/inet_chksum.c	\
				  src/core/init.c		\
				  src/core/ipv4/autoip.c	\
				  src/core/ipv4/icmp.c		\
				  src/core/ipv4/igmp.c		\
				  src/core/ipv4/ip4.c		\
				  src/core/ipv4/ip4_addr.c	\
				  src/core/ipv4/ip_frag.c	\
				  src/core/ipv6/dhcp6.c		\
				  src/core/ipv6/ethip6.c	\
				  src/core/ipv6/icmp6.c		\
				  src/core/ipv6/inet6.c		\
				  src/core/ipv6/ip6.c		\
				  src/core/ipv6/ip6_addr.c	\
				  src/core/ipv6/ip6_frag.c	\
				  src/core/ipv6/mld6.c		\
				  src/core/ipv6/nd6.c		\
				  src/core/mem.c		\
				  src/core/memp.c		\
				  src/core/netif.c		\
				  src/core/pbuf.c		\
				  src/core/raw.c		\
				  src/core/stats.c		\
				  src/core/sys.c		\
				  src/core/tcp.c		\
				  src/core/tcp_in.c		\
				  src/core/tcp_out.c		\
				  src/core/timers.c		\
				  src/core/udp.c

lwip_NETIF_PATHS		= src/netif/etharp.c

ifeq ($(BuildConfig),unittest)
lwip_TEST_PATHS	= test/nlunittest/src/test_pbuf.cpp
endif

lwip_SOURCE_PATHS		= $(lwip_API_PATHS) 	\
				  $(lwip_CORE_PATHS)			\
				  $(lwip_NETIF_PATHS)			\
				  $(lwip_TEST_PATHS)

lwip_INCLUDE	= src/include
lwip_IPV4_INCLUDE	= src/include/ipv4
lwip_IPV6_INCLUDE	= src/include/ipv6

ifeq ($(BuildConfig),unittest)
lwip_TEST_INCLUDE_DIRS = test/nlunittest/include
endif

lwip_PACKAGE_SOURCE_PATHS	= $(call GeneratePackagePaths,$(lwip_SOURCE_PATHS))

# Tell make where to search for the sources, cleaning up the leading
# ./ strictly for cosmetic display purposes in the process.

VPATH				= $(subst ./,,$(dir $(lwip_PACKAGE_SOURCE_PATHS)))

ifneq ($(BUILD_PRODUCT),pinnasim) # Only copy headers for pinnasim, don't build lwip library
ARCHIVES			= lwip
endif

lwip_SOURCES			= $(notdir $(lwip_PACKAGE_SOURCE_PATHS))

lwip_INCLUDES		   =  $(LwIPIncludePaths)		\
						   os/$(TargetOS)		\
						   $(FreeRTOSIncludePaths) \
						   $(NlPlatformIncludePaths) \
						   $(TestFrameworkIncludePaths) \
						   $(NLERIncludePaths)

# While LwIP uses the nlbuild build system because it has no build system of 
# its own, it is still third-party software and we do not want to enforce 
# style semantics on it. Consequently, set PrettyPaths to empty.

PrettyPaths                    := $(NULL)

# Use header_source:header_dest format to move header files to their appropriate locations
LwIPIncludeSourcePaths		= $(wildcard $(addsuffix /*/*.h,$(call GeneratePackagePaths, $(lwip_INCLUDE))))
LwIPIncludeTranslationPaths = $(foreach headerfile,$(LwIPIncludeSourcePaths),$(headerfile):$(subst $(PackageSourceDir)/src/include,,$(headerfile)))

LwIPIPV4IncludeSourcePaths		= $(wildcard $(addsuffix /*/*.h,$(call GeneratePackagePaths, $(lwip_IPV4_INCLUDE))))
LwIPIPV4IncludeTranslationPaths = $(foreach headerfile,$(LwIPIPV4IncludeSourcePaths),$(headerfile):$(subst $(PackageSourceDir)/src/include,,$(headerfile)))

LwIPIPV6IncludeSourcePaths		= $(wildcard $(addsuffix /*/*.h,$(call GeneratePackagePaths, $(lwip_IPV6_INCLUDE))))
LwIPIPV6IncludeTranslationPaths = $(foreach headerfile,$(LwIPIPV6IncludeSourcePaths),$(headerfile):$(subst $(PackageSourceDir)/src/include,,$(headerfile)))

LwIPTestIncludeSourcePaths		= $(wildcard $(addsuffix /*.h,$(call GeneratePackagePaths, $(lwip_TEST_INCLUDE_DIRS))))
LwIPTestIncludeTranslationPaths = $(foreach headerfile,$(LwIPTestIncludeSourcePaths),$(headerfile):$(subst $(PackageSourceDir)/test/nlunittest/include,,$(headerfile)))

LwIPOptionHeaderNames		= common_lwipopts.h lwipopts.h lwippools.h

LwIPArchHeaderNames		= cc.h perf.h sys_arch.h
LwIPArchHeaderSourcePaths	= $(addprefix os/$(TargetOS)/arch/,$(LwIPArchHeaderNames))
LwIPArchTranslationPaths	= $(foreach headerfile,$(LwIPArchHeaderSourcePaths),$(headerfile):$(subst os/$(TargetOS)/,,$(headerfile)))

lwip_HEADERS			= $(LwIPIncludeTranslationPaths) \
						  $(LwIPIPV4IncludeTranslationPaths) \
						  $(LwIPIPV6IncludeTranslationPaths) \
						  $(LwIPOptionHeaderNames)	\
						  $(LwIPArchTranslationPaths) \
						  $(LwIPTestIncludeTranslationPaths)

include post.mak