# To compile with the embedded python interpreter set 
# the variable ABC_PYTHON to point to the python executable
# 
# Examples:
# make ABC_PYTHON=/usr/bin/python
# make ABC_PYTHON=/usr/bin/python2.5
# 
# To build the Python extension build the target pyabc
# To create a package of ABC with embedded Python use the target pyabc.tgz

ifdef ABC_PYTHON

    # get the directory containing this file
    ABC_PYTHON_FILES_PREFIX := $(CURDIR)/src/python
    
    ABC_SWIG := swig
    ABC_PYTHON_CONFIG := $(ABC_PYTHON)-config
    ABC_PYTHON_CFLAGS := $(shell $(ABC_PYTHON_CONFIG) --includes) -DABC_PYTHON_EMBED=1
    ABC_PYTHON_LDFLAGS := $(shell $(ABC_PYTHON_CONFIG) --ldflags)

    CFLAGS += $(ABC_PYTHON_CFLAGS)
    CXXFLAGS += $(ABC_PYTHON_CFLAGS)
    LIBS += $(ABC_PYTHON_LDFLAGS)

    ABC_PYTHON_SRC := $(ABC_PYTHON_FILES_PREFIX)/pyabc_wrap.c
    
    SRC += $(ABC_PYTHON_SRC)
    
    GARBAGE += \
        $(ABC_PYTHON_SRC) \
        $(ABC_PYTHON_SRC:_wrap.c=.py) \
        $(ABC_PYTHON_SRC:_wrap.c=.pyc) \
        $(ABC_PYTHON_FILES_PREFIX)/build \
        $(ABC_PYTHON_FILES_PREFIX)/dist \
        pyabc.tgz

    ABC_PYABC_DIR ?= pyabc
    ABC_PYABC_TGZ ?= pyabc.tgz
    ABC_PYABC_EXTRA_BIN ?=
    ABC_PYABC_EXTRA_LIB ?=


%_wrap.c %.py : %.i
    $(ABC_SWIG) -python -outdir $(<D) $<

.PHONY: pyabc_extension_build

pyabc_extension_build : lib$(PROG).a $(ABC_PYTHON_SRC) $(ABC_PYTHON_SRC:_wrap.c=.py)
    ( cd $(ABC_PYTHON_FILES_PREFIX) && rm -rf build/ )    
    ( cd $(ABC_PYTHON_FILES_PREFIX) && $(ABC_PYTHON) setup.py build )
    
.PHONY: pyabc_extension_install

pyabc_extension_install : pyabc_extension_build    
    ( cd $(ABC_PYTHON_FILES_PREFIX) && $(ABC_PYTHON) setup.py install --user )
    
.PHONY: pyabc_extension_bdist

pyabc_extension_bdist : pyabc_extension_build    
    ( cd $(ABC_PYTHON_FILES_PREFIX) && python setup.py bdist )
    
.PHONY: pyabc_tgz

pyabc_tgz : $(ABC_PYABC_TGZ)
    
$(ABC_PYABC_TGZ) : $(PROG) $(ABC_PYTHON_SRC:_wrap.c=.py) $(ABC_PYTHON_FILES_PREFIX)/abc.sh $(ABC_PYTHON_FILES_PREFIX)/package.py
    $(ABC_PYTHON) $(ABC_PYTHON_FILES_PREFIX)/package.py \
            --pyabc_dir=$(ABC_PYABC_DIR) \
        --abc=$(PROG) \
        --abc_sh=$(ABC_PYTHON_FILES_PREFIX)/abc.sh \
        --pyabc=$(ABC_PYTHON_FILES_PREFIX) \
        --extra_bin="$(ABC_PYABC_EXTRA_BIN)" \
        --extra_lib="$(ABC_PYABC_EXTRA_LIB)" \
        --out=$@ \
        $(ABC_PYTHON_OPTIONS)

PYABC_INSTALL_TARGET ?= $(shell date +%Y-%m-%d_%H-%M.%N_${USER})
PYABC_INSTALL_TARGET := $(PYABC_INSTALL_TARGET)

PYABC_INSTALL_DIR ?= /hd/common/pyabc/builds/pyabc_builds/

pyabc_install_target: pyabc_extension_bdist
    mkdir -p "$(PYABC_INSTALL_DIR)/$(PYABC_INSTALL_TARGET)"
    tar \
       --directory="$(PYABC_INSTALL_DIR)/$(PYABC_INSTALL_TARGET)" \
       --show-transformed-names \
       --transform='s#^.*/##g' \
       -xvzf "$(ABC_PYTHON_FILES_PREFIX)/dist/pyabc-1.0.linux-x86_64.tar.gz"
    find "$(PYABC_INSTALL_DIR)/$(PYABC_INSTALL_TARGET)/"* -type d | xargs rmdir
    echo "Installed at $(PYABC_INSTALL_DIR)/$(PYABC_INSTALL_TARGET)"       

endif