#
# Copyright (C) 2006-2016 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

include $(TOPDIR)/rules.mk

# The file included below defines PYTHON_VERSION
include ./files/python-package.mk

PKG_NAME:=python
PKG_VERSION:=$(PYTHON_VERSION).$(PYTHON_VERSION_MICRO)
PKG_RELEASE:=5

PKG_SOURCE:=Python-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=https://www.python.org/ftp/python/$(PKG_VERSION)
PKG_MD5SUM:=1dbcc848b4cd8399a8199d000f9f823c

PKG_LICENSE:=PSF
PKG_LICENSE_FILES:=LICENSE Modules/_ctypes/libffi_msvc/LICENSE Modules/_ctypes/darwin/LICENSE Modules/_ctypes/libffi/LICENSE Modules/_ctypes/libffi_osx/LICENSE Tools/pybench/LICENSE

PKG_INSTALL:=1
PKG_BUILD_PARALLEL:=1
HOST_BUILD_PARALLEL:=1

PKG_BUILD_DIR:=$(BUILD_DIR)/Python-$(PKG_VERSION)
HOST_BUILD_DIR:=$(BUILD_DIR_HOST)/Python-$(PKG_VERSION)

PKG_BUILD_DEPENDS:=python/host
HOST_BUILD_DEPENDS:=bzip2/host expat/host libffi/host

include $(INCLUDE_DIR)/host-build.mk
include $(INCLUDE_DIR)/package.mk

define Package/python/Default
  SUBMENU:=Python
  SECTION:=lang
  CATEGORY:=Languages
  TITLE:=Python $(PYTHON_VERSION) programming language
  URL:=https://www.python.org/
  MAINTAINER:=Alexandru Ardelean <ardeleanalex@gmail.com>
endef

define Package/python/Default/description
 Python is a dynamic object-oriented programming language that can be used
 for many kinds of software development. It offers strong support for
 integration with other languages and tools, comes with extensive standard
 libraries, and can be learned in a few days. Many Python programmers
 report substantial productivity gains and feel the language encourages
 the development of higher quality, more maintainable code.
endef

define Package/python-base
$(call Package/python/Default)
  TITLE:=Python $(PYTHON_VERSION) interpreter
  DEPENDS:=+libpthread +zlib
endef

define Package/python-base/description
  This package contains only the interpreter and the bare minimum
  for the interpreter to start.
endef

define Package/python-light
$(call Package/python/Default)
  TITLE:=Python $(PYTHON_VERSION) light installation
  DEPENDS:=+python-base +libffi +libbz2
endef

define Package/python-light/description
  This package is essentially the python-base package plus
  a few of the rarely used (and big) libraries stripped out
  into separate packages.
endef

PYTHON_LIB_FILES_DEL:=
PYTHON_PACKAGES:=
PYTHON_PACKAGES_DEPENDS:=
define PyBasePackage
  PYTHON_PACKAGES+=$(1)
  ifeq ($(3),)
    PYTHON_PACKAGES_DEPENDS+=$(1)
  endif
  PYTHON_LIB_FILES_DEL+=$(2)
  define PyPackage/$(1)/filespec
    $(subst $(space),$(newline),$(foreach lib_file,$(2),+|$(lib_file)))
  endef
endef

include ./files/python-package-*.mk

define Package/python
$(call Package/python/Default)
  DEPENDS:=+python-light $(foreach package,$(PYTHON_PACKAGES_DEPENDS),+$(package))
endef

define Package/python/description
  This package contains the (almost) full Python install.
  It's python-light + all other packages.
endef

MAKE_FLAGS+=\
	CROSS_COMPILE=yes \
	LD="$(TARGET_CC)" \
	PGEN=pgen2

EXTRA_CFLAGS+= \
	-DNDEBUG -fno-inline
EXTRA_LDFLAGS+= \
	-L$(PKG_BUILD_DIR)

ENABLE_IPV6:=
ifeq ($(CONFIG_IPV6),y)
	ENABLE_IPV6 += --enable-ipv6
endif

CONFIGURE_ARGS+= \
	--sysconfdir=/etc \
	--enable-shared \
	--without-cxx-main \
	--with-threads \
	--with-system-ffi="$(STAGING_DIR)/usr" \
	--without-pymalloc \
	$(ENABLE_IPV6) \
	CONFIG_SITE="$(PKG_BUILD_DIR)/config.site" \
	OPT="$(TARGET_CFLAGS)"

define Build/Prepare
	$(call Build/Prepare/Default)
	$(CP) ./files/config.site $(PKG_BUILD_DIR)/config.site
endef

define Build/InstallDev
	$(INSTALL_DIR) $(STAGING_DIR)/mk/
	$(INSTALL_DIR) $(1)/usr/include/ $(1)/usr/lib/ $(1)/usr/lib/pkgconfig
	$(INSTALL_DIR) $(1)/usr/lib/python$(PYTHON_VERSION)/
	$(INSTALL_DATA) \
		./files/python-package.mk \
		./files/python-host.mk \
		$(STAGING_DIR)/mk/
	$(CP) \
		$(PKG_INSTALL_DIR)/usr/include/python$(PYTHON_VERSION) \
		$(1)/usr/include/
	$(CP) \
		$(STAGING_DIR)/host/lib/python$(PYTHON_VERSION) \
		$(PKG_INSTALL_DIR)/usr/lib/libpython$(PYTHON_VERSION).so* \
		$(1)/usr/lib/
	$(CP) \
		$(STAGING_DIR)/host/lib/pkgconfig/python.pc \
		$(STAGING_DIR)/host/lib/pkgconfig/python2.pc \
		$(STAGING_DIR)/host/lib/pkgconfig/python-$(PYTHON_VERSION).pc \
		$(1)/usr/lib/pkgconfig
	$(CP) \
		$(PKG_INSTALL_DIR)/usr/lib/python$(PYTHON_VERSION)/config \
		$(1)/usr/lib/python$(PYTHON_VERSION)/
endef

PYTHON_BASE_LIB_FILES:= \
	/usr/lib/python$(PYTHON_VERSION)/_abcoll.py \
	/usr/lib/python$(PYTHON_VERSION)/_sysconfigdata.py \
	/usr/lib/python$(PYTHON_VERSION)/_weakrefset.py \
	/usr/lib/python$(PYTHON_VERSION)/abc.py \
	/usr/lib/python$(PYTHON_VERSION)/copy_reg.py \
	/usr/lib/python$(PYTHON_VERSION)/genericpath.py \
	/usr/lib/python$(PYTHON_VERSION)/linecache.py \
	/usr/lib/python$(PYTHON_VERSION)/posixpath.py \
	/usr/lib/python$(PYTHON_VERSION)/os.py \
	/usr/lib/python$(PYTHON_VERSION)/re.py \
	/usr/lib/python$(PYTHON_VERSION)/site.py \
	/usr/lib/python$(PYTHON_VERSION)/sre_compile.py \
	/usr/lib/python$(PYTHON_VERSION)/sre_constants.py \
	/usr/lib/python$(PYTHON_VERSION)/sre_parse.py \
	/usr/lib/python$(PYTHON_VERSION)/sysconfig.py \
	/usr/lib/python$(PYTHON_VERSION)/stat.py \
	/usr/lib/python$(PYTHON_VERSION)/traceback.py \
	/usr/lib/python$(PYTHON_VERSION)/types.py \
	/usr/lib/python$(PYTHON_VERSION)/UserDict.py \
	/usr/lib/python$(PYTHON_VERSION)/warnings.py

PYTHON_LIB_FILES_DEL+=$(PYTHON_BASE_LIB_FILES)

define PyPackage/python-base/filespec
+|/usr/bin/python$(PYTHON_VERSION)
$(subst $(space),$(newline),$(foreach lib_file,$(PYTHON_BASE_LIB_FILES),+|$(lib_file)))
endef

define PyPackage/python-light/filespec
+|/usr/lib/python$(PYTHON_VERSION)
-|/usr/lib/python$(PYTHON_VERSION)/distutils/cygwinccompiler.py
-|/usr/lib/python$(PYTHON_VERSION)/distutils/command/wininst*
-|/usr/lib/python$(PYTHON_VERSION)/ensurepip
-|/usr/lib/python$(PYTHON_VERSION)/idlelib
-|/usr/lib/python$(PYTHON_VERSION)/lib-tk
-|/usr/lib/python$(PYTHON_VERSION)/lib-dynload/_testcapi.so
-|/usr/lib/python$(PYTHON_VERSION)/pdb.doc
-|/usr/lib/python$(PYTHON_VERSION)/test
-|/usr/lib/python$(PYTHON_VERSION)/webbrowser.py
-|/usr/lib/python$(PYTHON_VERSION)/*/test
-|/usr/lib/python$(PYTHON_VERSION)/*/tests
-|/usr/lib/python$(PYTHON_VERSION)/lib-dynload/readline.so
$(subst $(space),$(newline),$(foreach lib_file,$(PYTHON_LIB_FILES_DEL),-|$(lib_file)))
endef

define PyPackage/python-base/install
	$(LN) python$(PYTHON_VERSION) $(1)/usr/bin/python
	$(LN) python$(PYTHON_VERSION) $(1)/usr/bin/python2
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libpython$(PYTHON_VERSION).so* $(1)/usr/lib/
endef

define PyPackage/python/filespec
-|$(PYTHON_PKG_DIR)
endef

HOST_CFLAGS+= \
	-I/usr/include/ncursesw \
	-I/usr/include/ncurses

HOST_CONFIGURE_ARGS+= \
	--without-cxx-main \
	--without-pymalloc \
	--with-threads \
	--with-system-expat=$(STAGING_DIR)/host \
	--with-system-ffi="$(STAGING_DIR)/host" \
	--with-ensurepip=upgrade \
	CONFIG_SITE= \
	CFLAGS="$(HOST_CFLAGS)"

define Host/Install
	$(INSTALL_DIR) $(STAGING_DIR)/host/bin/
	$(MAKE) -C $(HOST_BUILD_DIR) install
	$(INSTALL_BIN) $(HOST_BUILD_DIR)/Parser/pgen $(STAGING_DIR)/host/bin/pgen2
endef

$(eval $(call HostBuild))

$(foreach package, $(PYTHON_PACKAGES),  \
	$(eval $(call PyPackage,$(package))) \
	$(eval $(call BuildPackage,$(package))) \
)

$(eval $(call PyPackage,python-base))
$(eval $(call PyPackage,python-light))
$(eval $(call PyPackage,python))

$(eval $(call BuildPackage,python-base))
$(eval $(call BuildPackage,python-light))
$(eval $(call BuildPackage,python))