ENV_PYTHONPATH              := $(PYTHONPATH)
PYTHON                      ?= python2
#PYTHON                      = python3

ifneq ($(DEVELOPMENT),true)
  PY_SITE_PACKAGES_PATH     := $(shell $(PYTHON) -c "import site; print(site.getsitepackages()[0])")
else
  PY_SITE_PACKAGES_PATH     := $(PREFIX)/python2/site-packages
endif

PY_PREREQ_BUILD             ?= $(shell $(proj_query_cmd) pkg-requires --subsections jw -d ' ' -p --no-version build $(PROJECT))
PY_PREREQ_BUILD_DIRS        ?= $(shell $(proj_query_cmd) proj-dir $(PY_PREREQ_BUILD))
PY_PROJ_MODULE_DIRS         ?= $(wildcard $(foreach subdir,/tools/python /src/python,$(addsuffix $(subdir),$(TOPDIR) $(PY_PREREQ_BUILD_DIRS))))
PY_MODULE_DIRS              ?= $(PY_PROJ_MODULE_DIRS)
PY_PROJ_MODULES             += $(dir $(wildcard $(PY_MODULE_DIRS)/*/__init__.py))
PY_MODULES                  ?= $(PY_PROJ_MODULES)
PY_SRC_PY                   ?= $(wildcard *.py)
PY_ALL_PY                    = $(sort $(PY_SRC_PY) __init__.py)
ifneq ($(PYTHON),python3)
  PY_PYC                     = $(patsubst %.py,%.pyc,$(PY_ALL_PY))
else
  PY_PYC                     = $(patsubst %.py,__pycache__/%.cpython-37.pyc,$(PY_ALL_PY))
endif

PY_INSTALL_PKG_MOD          ?= $(shell $(PWD) | sed 's%.*/python/%%; s%/.*%%')
PY_INSTALL_SUB_MOD          ?= $(shell $(PWD) | sed "s%.*/$(PY_INSTALL_PKG_MOD)\(/\|$$\)%%")
ifneq ($(PY_INSTALL_SUB_MOD),)
  PY_INSTALL_MOD            ?= $(PY_INSTALL_PKG_MOD)/$(PY_INSTALL_SUB_MOD)
else
  PY_INSTALL_MOD            ?= $(PY_INSTALL_PKG_MOD)
endif
PY_MOD                      ?= $(subst /,.,$(PY_INSTALL_MOD))
PY_INSTALL_DIR_PY           ?= $(ENV_PREFIX)$(PY_SITE_PACKAGES_PATH)/$(patsubst .,/,$(PY_INSTALL_MOD))
ifeq ($(PYTHON),python3)
  PY_INSTALL_DIR_PYC        ?= $(PY_INSTALL_DIR_PY)/__pycache__
endif
PY_INSTALL_DIRS             ?= $(PY_INSTALL_DIR_PY) $(PY_INSTALL_DIR_PYC)
PY_INSTALLED_PY              = $(addprefix $(PY_INSTALL_DIR_PY)/,$(PY_ALL_PY))
PY_INSTALLED_PYC             = $(addprefix $(PY_INSTALL_DIR_PY)/,$(PY_PYC))
PY_INSTALLED_REG             = $(PY_INSTALLED_PY) $(PY_INSTALLED_PYC)

empty                       :=
space                       := $(empty) $(empty)
PYTHONPATH                  ?= $(call proj_query, pythonpath $(PROJECT))
#PYTHONPATH                  = $(subst $(space),,$(ENV_PYTHONPATH)$(foreach d,$(PY_MODULE_DIRS),:$(d)))
export PYTHONPATH

PY_DEFS_MK_INCLUDED         := true
ifneq ($(PY_DEFS_MK_INCLUDED),true)
all:
clean: pyc.clean

echo-py:
	@echo PROJECT = $(PROJECT)
	@echo PY_PROJ_MODULE_DIRS = $(PY_PROJ_MODULE_DIRS)
	@echo PY_MODULE_DIRS = $(PY_MODULE_DIRS)
	@echo PY_SITE_PACKAGES_PATH = $(PY_SITE_PACKAGES_PATH)
	@echo PY_MODULES = $(PY_MODULES)
	@echo PYTHONPATH = $(PYTHONPATH)
	@echo PY_INSTALL_MOD = $(PY_INSTALL_MOD)
	@echo PY_INSTALL_SUB_MOD = $(PY_INSTALL_SUB_MOD)

pyc.clean:
	$(RM) -f $(wildcard *.pyc) __pycache__
libpath: py-libpath
py-libpath:
	@echo export PYTHONPATH=$(PYTHONPATH)
endif

include $(MODDIR)/make/ldlibpath.mk