build

#!/bin/bash

echo "Cleaning..."

rm -rf tmp
rm -rf lib
rm -rf type
rm -f test

mkdir tmp
mkdir lib
mkdir type

if [ "$1" == vala ]; then
	echo "Building Vala library..."

	# Note 1: Ubuntu package for valac: valac-0.14
	# Note 2: Generates broken gir if --gir= has a directory prefixed to it
	# Note 3: The -X switches for gcc are necessary!
	# Note 4: The generated gir will include GObject-2.0. That gir is
	#         included in Ubuntu package: libgirepository1.0-dev
	valac \
	--library=Logging \
	--directory=tmp \
	--gir=Logging-1.0.gir \
	--output=liblogging.so \
	-X -shared \
	-X -fPIC \
	logging.vala
	
	mv tmp/liblogging.so lib
	mv tmp/Logging-1.0.gir type

	# Note: We cannot generate C code and compile in the same call
	#       (We don't need the C code to run the test, but we are curious
	#       as to what Vala is generating. The resulting code will be in
	#       logging.c)
	valac \
	--ccode \
	logging.vala
	
else
	echo "Building C library..."

	# Compile
	gcc \
	-c \
	-fPIC \
	$(pkg-config --cflags --libs gobject-2.0) \
	logging_logger.c \
	$(pkg-config --libs gobject-2.0) \
	-o tmp/logging.o

	# Link the shared library
	gcc \
	-shared \
	tmp/logging.o \
	$(pkg-config --libs gobject-2.0) \
	-o lib/liblogging.so

	# Link the static library (not used in this example, but it's here
	# for the sake of completion)
	ar crs lib/liblogging.a tmp/logging.o
	
	echo "Creating gir..."
	
	# Note 1: Ubuntu package for g-ir-scanner: gobject-introspection
	# Note 2: I could not get g-ir-scanner to work with gcc above version
	#         4.4! I'm sure it's due to some new defaults that must be
	#         explicitly changed, but could not find them. So, make sure
	#         to install Ubuntu package: gcc-4.4
	# Note 3: If we do not explicitly include GObject-2.0, PyGObject will
	#         be able to to load the types, but will not actually call
	#         class and instance init functions! (valac includes it by
	#         default in its gir output)
	# Note 4: The GObject-2.0 gir is included in Ubuntu package:
	#         libgirepository1.0-dev
	CC=gcc-4.4 \
	LD_LIBRARY_PATH=lib \
	g-ir-scanner \
	--warn-all \
	--namespace=Logging \
	--nsversion=1.0 \
	--include=GObject-2.0 \
	--library-path=lib \
	--library=logging \
	--pkg=gobject-2.0 \
	--output=type/Logging-1.0.gir \
	logging_logger.c logging_logger.h

	echo "Building C executable..."

	gcc \
	$(pkg-config --cflags --libs gobject-2.0) \
	test.c \
	lib/liblogging.so \
	$(pkg-config --libs gobject-2.0) \
	-o test

	echo "Test C..."

	LD_LIBRARY_PATH=lib \
	./test
fi

echo "Building typelib..."

# Note 1: Ubuntu package for g-ir-compiler: gobject-introspection
# Note 2: The --shared-library switch is really only necessary when using
#         the gir produced by valac, because it does not include the
#         'shared-library' attribute in <namespace> tag.
g-ir-compiler \
--shared-library=liblogging.so \
--output=type/Logging-1.0.typelib \
type/Logging-1.0.gir

echo "Test Python..."

# Note 1: Ubuntu's default path for typelib files seems to be:
#         /usr/lib/girepository-1.0/.
# Note 2: It is also possible to programmatically change the
#         GI_TYPELIB_PATH environment var in Python (os.environ API).
#         If you do so, make sure to set it before importing from
#         gi.repository.
LD_LIBRARY_PATH=lib \
GI_TYPELIB_PATH=type \
./test.py