#!/usr/bin/make -f

# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1

# These are used for cross-compiling and for saving the configure script
# from having to guess our platform (since we know it already)
DEB_HOST_GNU_TYPE   ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_BUILD_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)

CFLAGS = -Wall -g
EXTRA_ARGS=
PROFILE_ARGS=

# To enable debugging: export DEB_BUILD_OPTIONS="debug profiling threadoff"
ifneq (,$(findstring profiling,$(DEB_BUILD_OPTIONS)))
	PROFILE_ARGS= --with-gprof
endif

ifneq (,$(findstring backtrace,$(DEB_BUILD_OPTIONS)))
	EXTRA_ARGS=--with-backtrace
	BTCFLAGS=-rdynamic
endif

ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -O0 -ggdb  -D_GNU_SOURCE -MD -MP -Wl,--as-needed -Wall -ansi
else
	CFLAGS += -O2
endif

# shared library versions, option 1
version=2.0.5
major=2
# option 2, assuming the library is created as src/.libs/libfoo.so.2.0.5 or so
#version=`ls src/.libs/lib*.so.* | \
# awk '{if (match($$0,/[0-9]+\.[0-9]+\.[0-9]+$$/)) print substr($$0,RSTART)}'`
#major=`ls src/.libs/lib*.so.* | \
# awk '{if (match($$0,/\.so\.[0-9]+$$/)) print substr($$0,RSTART+4)}'`

PYVERS=$(shell pyversions -vr)

build: build-c $(PYVERS:%=build-python%/build-stamp)
install: build install-c $(PYVERS:%=install-python%)
clean: clean-c $(PYVERS:%=clean-python%)

### Python libraries build rules ###
build-python%/configure-stamp:
	dh_testdir

	mkdir build-python$*
	cd build-python$* && \
	PYTHON=/usr/bin/python$* CFLAGS="$(BTCFLAGS) $(CFLAGS)" ../configure \
		--host=$(DEB_HOST_GNU_TYPE) \
		--build=$(DEB_BUILD_GNU_TYPE) \
		--srcdir=.. \
		--prefix=/usr \
		--includedir="/usr/include" \
		--mandir="/usr/share/man" \
		--sysconfdir=/etc \
		--localstatedir=/var \
		$(EXTRA_ARGS) $(PROFILE_ARGS) \
		--libexecdir="/usr/lib/libical"	\
		--enable-python
	touch $@

build-python%/build-stamp: build-c build-python%/configure-stamp
	dh_testdir

	# Trick into using already built build-c libs so we don't end up
	# building the same ical lib more than once.
	find "build-python$*/src" -maxdepth 1 -mindepth 1 | grep -v python$$ | xargs -r -t rm -rf
	find "build-c/src" -maxdepth 1 -mindepth 1 | grep -v python$$ | xargs -r -t -I{} ln -s "../../{}" "build-python$*/src"
	
	$(MAKE) -C build-python$*/src/python pyexecdir=/usr/lib/pymodules/python$*

	touch $@

install-python%: build-python%/build-stamp
	dh_testdir
	dh_testroot
#	dh_clean -k 
	dh_installdirs

	# install with hack to move installed python libs to pymodule dir
	$(MAKE) -C build-python$*/src/python install pyexecdir=/usr/lib/pymodules/python$* DESTDIR=$(CURDIR)/debian/tmp && \
	mv -i $(CURDIR)/debian/tmp/usr/lib/python$*/*/* $(CURDIR)/debian/tmp/usr/lib/pymodules/python$*/

clean-python%:
#	mkdir -p build-python$* && cd build-python$*
	dh_testdir
#	dh_testroot
	rm -rf build-python$*
	dh_prep

### C libraries build rules ###
build-c/configure-stamp: configure
#config.status: configure
	dh_testdir

ifneq "$(wildcard /usr/share/misc/config.sub)" ""
	cp -f /usr/share/misc/config.sub config.sub
endif
ifneq "$(wildcard /usr/share/misc/config.guess)" ""
	cp -f /usr/share/misc/config.guess config.guess
endif

	mkdir build-c
	cd build-c && \
	CFLAGS="$(BTCFLAGS) $(CFLAGS)" ../configure \
		--host=$(DEB_HOST_GNU_TYPE) \
		--build=$(DEB_BUILD_GNU_TYPE) \
		--prefix=/usr \
		--includedir="/usr/include" \
		--mandir="/usr/share/man" \
		--sysconfdir=/etc \
		--localstatedir=/var \
		$(EXTRA_ARGS) $(PROFILE_ARGS) \
		--libexecdir="/usr/lib/libical"

	touch $@

build-c: build-c/build-stamp
build-c/build-stamp:  build-c/configure-stamp
	dh_testdir

#	$(MAKE) clean
	$(MAKE) -C build-c

	touch $@

clean-c:
	dh_testdir
	dh_testroot

	rm -rf build-c

	dh_prep

install-c: build-c
	dh_testdir
	dh_testroot
	dh_clean -k 
	dh_installdirs

	$(MAKE) -C build-c DESTDIR=$(CURDIR)/debian/tmp install

# Build architecture-independent files here.
binary-indep: build install
# We have nothing to do by default.

# Build architecture-dependent files here.
binary-arch: build install
	dh_testdir
	dh_testroot
	dh_installchangelogs ChangeLog
	dh_installdocs
	dh_installexamples
	dh_install -s --sourcedir=debian/tmp
#	dh_installmenu
#	dh_installdebconf	
#	dh_installlogrotate
#	dh_installemacsen
#	dh_installpam
#	dh_installmime
#	dh_installinit
#	dh_installcron
#	dh_installinfo
	dh_installman
	dh_link
	dh_strip
	dh_compress
	dh_fixperms
#	dh_perl
	dh_pysupport
#	dh_makeshlibs
	dh_installdeb
#	dh_shlibdeps
	# We need to exclude dependency resolving for the python extension
        # module because if libical0 is installed but libical-dev is not
        # we get build errors.  The lib in /usr/lib will be found first
        # but no .la will exist to get the dependency info from.  Is there
        # a way to tell dh_shlibdeps to find the lib first in debian/tmp?
	dh_shlibdeps -XLibicalWrap
#	dh_shlibdeps -l$(CURDIR)/debian/tmp/usr/lib -- -v
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary: binary-indep binary-arch
.PHONY: build clean binary-indep binary-arch binary install