#
#    Copyright (c) 2010-2012 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 glib, a cross-platform software
#      utility library for algorithms, data structures and OS
#      abstractions.
#

BuildConfigSpecialized	:= No
BuildProductSpecialized	:= Yes

include pre.mak

PackageName		:= glib

PackageExtension	:= tar.bz2
PackageSeparator	:= -

PackagePatchArgs	:=

PackageArchive		:= $(PackageName).$(PackageExtension)
PackageSourceDir	:= $(PackageName)$(PackageSeparator)$(PackageVersion)

PackageBuildMakefile	= $(call GenerateBuildPaths,Makefile)

CleanPaths		+= $(PackageLicenseFile)

DbusDir			:= sw/tps/dbus
DbusIncDirs		:= $(call GenerateResultPaths,$(DbusDir),usr/include/dbus-1.0 usr/lib/dbus-1.0/include)
DbusLibDir		:= $(call GenerateResultPaths,$(DbusDir),usr/lib)

ZlibDir			:= sw/tps/zlib
ZlibIncDir      	:= $(call GenerateResultPaths,$(ZlibDir),usr/include)
ZlibLibDir      	:= $(call GenerateResultPaths,$(ZlibDir),usr/lib)

all: $(PackageDefaultGoal)

# Generate the package license contents.

$(PackageSourceDir)/COPYING: source

$(PackageLicenseFile): $(PackageSourceDir)/COPYING
	$(copy-result)

# Extract the source from the archive and apply patches, if any.

$(PackageSourceDir): $(PackageArchive) $(PackagePatchPaths)
	$(expand-and-patch-package)

# Prepare the sources.

.PHONY: source
source: | $(PackageSourceDir)

# Patch the sources, if necessary.

.PHONY: patch
patch: source

# Generate the package build makefile.
#
# The configure script cannot determine several features when
# cross-compiling, so we give it direct cached answers for the
# GNU/Linux systems we are concerned with.

$(PackageBuildMakefile): | $(PackageSourceDir) $(BuildDirectory) $(ResultDirectory)
	$(Verbose)cd $(BuildDirectory) && \
	$(CURDIR)/$(PackageSourceDir)/configure \
	INSTALL="$(INSTALL) $(INSTALLFLAGS)" \
	CC="$(CC)" CXX="$(CXX)" AR=$(AR) NM=$(NM) RANLIB=$(RANLIB) STRIP=$(STRIP) \
	DBUS1_CFLAGS="$(call ToolGenerateIncludeArgument,$(DbusIncDirs))" \
	DBUS1_LIBS="$(call ToolGenerateLibraryPathArgument,$(DbusLibDir)) -ldbus-1" \
	CPPFLAGS="$(CPPOPTFLAGS) \
	$(call ToolGenerateIncludeArgument,$(ZlibIncDir))" \
	LDFLAGS=$(call ToolGenerateLibraryPathArgument,$(ZlibLibDir)) \
	--build=$(HostTuple) \
	--host=$(TargetTuple) \
	glib_cv_stack_grows=no \
	glib_cv_uscore=no \
	ac_cv_func_posix_getpwuid_r=yes \
	ac_cv_func_posix_getgrgid_r=yes \
	--disable-selinux \
	--disable-xattr \
	--enable-static \
	--enable-shared \
	--prefix=/usr \
	--sysconfdir=/etc \
	--localstatedir=/var

# Configure the source for building.
#
# GLib uses and, in fact, requires a host-native version of
# glib-genmarshall to build itself. When cross-compiling, this is
# unavailable. So, we place $(HostBinDir) first in the path when
# configuring to ensure that the project-local version of this is
# found.

configure: PATH := $(HostBinDir):$(PATH)

.PHONY: configure
configure: source $(PackageBuildMakefile)

# Build the source.
#
# We have to unset MAKEFLAGS since they confuse the package build otherwise.

.PHONY: build
build: configure
	$(Verbose)unset MAKEFLAGS && \
	$(MAKE) $(JOBSFLAG) -C $(BuildDirectory) all

# Stage the build to a temporary installation area.
#
# We have to unset MAKEFLAGS since they confuse the package build otherwise.
#
# We explictly remove 'libfoo.la' because some packages that depend on
# these libraries use libtool. If libtool finds a 'libfoo.la' file for
# a library, it uses the value of 'libdir=<dir>' it finds. In our
# case, since '--prefix=/usr' this value is '/usr/lib'. It then
# resolves '-lfoo'. In a cross-compilation environment, this is likely
# to be neither the right architecture nor the right version to link
# against. In short, we lose.
#
# We could also handle this by removing DESTDIR and setting the prefix
# to $(ResultDirectory); however, that results in libtool hard-coding
# $(ResultDirectory) as the RPATH in the linked executables which is
# NOT what we want either. We lose again.
#
# By removing the '*.la' file, we win by ensuring neither a misdirected
# link nor an RPATH.

.PHONY: stage
stage: build | $(ResultDirectory)
	$(Verbose)unset MAKEFLAGS && \
	$(MAKE) $(JOBSFLAG) -C $(BuildDirectory) DESTDIR=$(ResultDirectory) install
	$(Verbose)$(RM) $(RMFLAGS) $(call GenerateResultPaths,,usr/lib/libgio-2.0.la usr/lib/libgmodule-2.0.la usr/lib/libglib-2.0.la usr/lib/libgthread-2.0.la usr/lib/libgobject-2.0.la)

clean:
	$(Verbose)$(RM) $(RMFLAGS) -r $(PackageSourceDir)
	$(Verbose)$(RM) $(RMFLAGS) -r $(BuildDirectory)
	$(Verbose)$(RM) $(RMFLAGS) -r $(ResultDirectory)

include post.mak