#!/usr/bin/make -f
# -*- Makefile -*-
#
# This makefile was initially created by Michael Hanke
# <michael.hanke@gmail.com> to cross compile the nifticlibs for win32 on a
# Debian system -- although it should work on most Linux systems with possibly
# minor modifications. The whole process should become a lot easier once
# CMake 2.6 with cross-compiler toolchain support is released.
#
# Like the other parts of this package, this code is placed into the public
# domain.
#
# The 'devpak' target generates a DevPak suitable for Dev-Cpp, see:
# http://www.bloodshed.net/devcpp.html
#
# Requirements:
#  - cross-compiler environment (on Debian simply: apt-get install mingw32)
#  - recent CMake (tested with 2.4)
#  - cross-compiled zlib installed below $mingw_root_path. The easiest way to
#    achieve this is using the zlib package provided by the gnuwin32 project:
#    http://gnuwin32.sourceforge.net/
#
# Usage:
#  Enter the root of the nifticlibs package and execute
#
#      make -f Makefile.cross_mingw32
#
#  now the generated DevPak should be located in the toplevel directory. This
#  can be installed using the Package manager of Dev-Cpp under Windows.
#


# default settings
build_dir = mingw32_cross
devpak_dir = mingw32_devpak

# where all the cross-compiled libs and binaries are installed
mingw_root_path = /usr/local/mingw32
# where the cross-compiler itself is installed
mingw_bin_path = /usr/bin
# the common filename prefix of all cross-compiler binaries
mingw_bin_prefix = i586-mingw32msvc
# don't touch this one, unless you know what you are doing
mingw_bin = $(mingw_bin_path)/$(mingw_bin_prefix)

# extract the most recent version from the README file
nifti_version = $$(grep Version README | head -n1 | awk '{ print $$2 }')

# compile CMake flags.
cmake_flags = -DCMAKE_SYSTEM_NAME=Windows \
			  -DCMAKE_AR=$(mingw_bin)-ar \
			  -DCMAKE_RANLIB=$(mingw_bin)-ranlib \
			  -DCMAKE_C_COMPILER=$(mingw_bin)-gcc \
			  -DCMAKE_CXX_COMPILER=$(mingw_bin)-g++ \
			  -DCMAKE_C_FLAGS="-I$(mingw_root_path)/include -L$(mingw_root_path)/lib -DWIN32"


all: devpak


clean:
	-rm -rf $(build_dir)
	-rm build-devpak configure-devpak

distclean: clean
	-rm -rf $(devpak_dir)

configure-devpak:
	if [ ! -d $(build_dir) ]; then mkdir $(build_dir); fi
	cd $(build_dir) && cmake .. $(cmake_flags) -DCMAKE_INSTALL_PREFIX=/$(devpak_dir)
	touch $@

build-devpak: configure-devpak
	cd $(build_dir) && make VERBOSE=1
	touch $@

install-devpak: build-devpak
	if [ ! -d $(devpak_dir) ]; then mkdir $(devpak_dir); fi
	cd $(build_dir) && make install DESTDIR=../

devpak: install-devpak
	# nifti_tool header is unnecessary
	rm $(devpak_dir)/include/nifti/nifti_tool.h

	# generate devpak info file
	sed -e s/__full_version__/$(nifti_version)/g \
	    -e s/__major_version__/$(nifti_version)/g \
		< packaging/DevPackage.template > $(devpak_dir)/nifticlib.DevPackage

	# include license and readme
	cp LICENSE README $(devpak_dir)

	# compress
	cd $(devpak_dir) && tar cvjf ../nifticlib-$(nifti_version).DevPak *