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# This is a GNU Makefile. Special tools needed: GNU make and awk, git.
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# Make Debian packages. This builds a package from the current HEAD in a
# subdirectory named $(debdist). It also creates the source archive that goes
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# along with it. All files will be created in the debuild directory.
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# To make this work, you need to have the Debian package toolchain (debuild
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# and friends) installed. You should also set the DEBEMAIL environment (or
# make) variable to your full name and email address as explained in the
# debchange(1) manual page, e.g.: DEBEMAIL="John Doe <johndoe@mail.com>"
# This information is used to create changelog entries with 'make debchange',
# which in turn are used to sign the Debian packages created with 'make deb'
# and 'make debsrc'. (Otherwise some generic information supplied by the
# system will be used, and you may not be able to sign the package.)
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# The typical workflow is as follows:

# 1. Run 'make debchange' once to create a new debian/changelog entry. You
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# *must* do this once after changes in the source repository so that debuild
# knows about the proper version number of the package.
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# 2. Run 'make deb' to build a signed binary package. Or 'make deb-us' for an
# unsigned one.

# If you only need the binary package for local deployment then you're done.
# Otherwise proceed to step 3.

# 3. Run 'make debsrc' to create a signed Debian source package which can be
# uploaded, e.g, to Launchpad using 'dput'. Or 'make debsrc-us' for an
# unsigned package.

# 4. Run 'make debclean' to get rid of any files that were created in steps 2
# and 3.

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# The Debian version gets derived from the date and serial number of the last
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# commit. You can print it with 'make debversion'.
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debversion = $(shell grep PD_L2ORK_VERSION ../pd/src/m_pd.h | sed 's|^.define *PD_L2ORK_VERSION *"\(.*\)".*|\1|')+git$(shell git rev-list --count HEAD)+$(shell git rev-parse --short HEAD)
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# Debian revision number of the package.
debrevision = 1
# Source tarball and folder.
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debsrc = purr-data_$(debversion).orig.tar.gz
debdist = purr-data-$(debversion)

# nw.js sdk
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nwjsver = 0.22.1
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nwjspkg = nwjs-sdk-v$(nwjsver)-linux
nwjs = $(nwjspkg)-ia32.tar.gz $(nwjspkg)-x64.tar.gz
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# Submodules (Gem, etc.). You can list them with 'make submodules'.
#submodules = Gem externals/miXed $(addprefix l2ork_addons/, cwiid fftease3.0-32bit lyonpotpourri rtcmix-in-pd)
submodules = $(sort $(shell git -C .. config --file .gitmodules --get-regexp path | awk '{ print $$2 }'))
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# This is used for automatically generated debian/changelog entries (cf. 'make
# debchange'). Adjust as needed.
debmsg = "Build from latest upstream source."
debprio = "low"

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.PHONY: submodules debversion debchange debclean deb debsrc deb-us debsrc-us

submodules:
	@echo $(submodules)
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debversion:
	@echo $(debversion)

debchange:
	dch -u $(debprio) -v $(debversion)-$(debrevision) $(debmsg) && dch -r ""

debclean:
	rm -rf $(debdist)
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	rm -f purr-data_*+git*
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deb: $(debsrc) $(addprefix debian/nwjs/, $(nwjs))
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# Unpack the source into our temporary build directory.
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	rm -rf $(debdist)
	tar xfz $(debsrc)
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# Add the NW.js binaries to the source package.
	cd debian/source && rm -f include-binaries && for x in $(addprefix debian/nwjs/, $(nwjs)); do echo "$$x" >> include-binaries; done
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# Make sure to copy the Debian files which may have uncommitted changes.
# Then run debuild to create the package.
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	cd $(debdist) && cp -R ../debian . && debuild $(DEBUILD_FLAGS)
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# Get rid of the temporary build directory.
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	rm -rf $(debdist)

debsrc:
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	$(MAKE) deb DEBUILD_FLAGS="-S -d"
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deb-us:
	$(MAKE) deb DEBUILD_FLAGS="-us -uc"

debsrc-us:
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	$(MAKE) deb DEBUILD_FLAGS="-S -d -us -uc"
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# Determine the build version which needs git to be computed, so we can't do
# it in a stand-alone build from a tarball.
PD_BUILD_VERSION := $(shell git log -1 --format=%cd --date=short | sed -e 's/-//g')-rev.$(shell git rev-parse --short HEAD)

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$(debsrc):
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	rm -rf $(debdist)
# Make sure that the submodules are initialized.
	git -C .. submodule update --init
# Grab the main source.
	git -C .. archive --format=tar.gz --prefix=$(debdist)/ HEAD | tar xfz -
# Grab the submodules.
	for x in $(submodules); do (cd $(debdist) && rm -rf $$x && git -C ../../$$x archive --format=tar.gz --prefix=$$x/ HEAD | tar xfz -); done
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# Pre-generate and put s_stuff.h into the tarball (see above; the build
# version is generated using git which can't be done outside the git repo).
	sed 's|^\(#define PD_BUILD_VERSION "\).*"|\1$(PD_BUILD_VERSION)"|' ../pd/src/s_stuff.h.in > $(debdist)/pd/src/s_stuff.h
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# Create the source tarball.
	tar cfz $(debsrc) $(debdist)
	rm -rf $(debdist)
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debian/nwjs/$(nwjspkg)-%.tar.gz:
	mkdir -p debian/nwjs &&	cd debian/nwjs && wget http://dl.nwjs.io/v$(nwjsver)/$(notdir $@)