#
# 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 PYTHON3_VERSION
include ../python3-version.mk

PKG_NAME:=python3
PKG_RELEASE:=1
PKG_VERSION:=$(PYTHON3_VERSION).$(PYTHON3_VERSION_MICRO)

PKG_SOURCE:=Python-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=https://www.python.org/ftp/python/$(PKG_VERSION)
PKG_HASH:=2f0e409df2ab57aa9fc4cbddfb976af44e4e55bf6f619eee6bc5c2297264a7f6

PKG_MAINTAINER:=Jeffery To <jeffery.to@gmail.com>
PKG_LICENSE:=PSF-2.0
PKG_LICENSE_FILES:=LICENSE Doc/copyright.rst Doc/license.rst Modules/_ctypes/darwin/LICENSE Modules/_ctypes/libffi_osx/LICENSE Modules/expat/COPYING
PKG_CPE_ID:=cpe:/a:python:python

# This file provides the necsessary host build variables
include ../python3-host.mk

# For Py3Package
PYTHON3_PKG_BUILD:=0
include ../python3-package.mk

PKG_FIXUP:=autoreconf
PKG_INSTALL:=1
PKG_BUILD_PARALLEL:=1
HOST_BUILD_PARALLEL:=1
# LTO is handled here individually, see --with-lto below
# "no-lto" prevents CONFIG_USE_LTO to add additional and interfering flags
PKG_BUILD_FLAGS:=no-lto

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

PKG_BUILD_DEPENDS:=bluez python3/host python-build/host python-installer/host python-wheel/host
HOST_BUILD_DEPENDS:=bzip2/host libffi/host

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

define Package/python3/Default
  SUBMENU:=Python
  SECTION:=lang
  CATEGORY:=Languages
  TITLE:=Python $(PYTHON3_VERSION) programming language
  URL:=https://www.python.org/
endef

define Package/python3/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/libpython3
$(call Package/python3/Default)
  TITLE:=Python $(PYTHON3_VERSION) core library
  DEPENDS:=+libpthread
  ABI_VERSION:=$(PYTHON3_VERSION)
endef

define Package/libpython3/description
  This package contains only core Python library.
endef

define Package/python3-base
$(call Package/python3/Default)
  TITLE:=Python $(PYTHON3_VERSION) interpreter
  DEPENDS:=+libpython3
endef

define Package/python3-base/description
  This package contains only the interpreter and the bare minimum
  for the interpreter to start.
endef

define Package/python3-light
$(call Package/python3/Default)
  TITLE:=Python $(PYTHON3_VERSION) light installation
  DEPENDS:=+python3-base +libbz2 +zlib
endef

define Package/python3-light/config
  source "$(SOURCE)/Config-python3-light.in"
endef

define Package/python3-light/description
  This package is essentially the python3-base package plus
  a few of the rarely used (and big) libraries stripped out
  into separate packages.
endef

PYTHON3_LIB_FILES_DEL:=
PYTHON3_PACKAGES:=
PYTHON3_SO_SUFFIX:=cpython-$(PYTHON3_VERSION_MAJOR)$(PYTHON3_VERSION_MINOR).so
PYTHON3_PACKAGES_DEPENDS:=
define Py3BasePackage
  PYTHON3_PACKAGES+=$(1)
  ifeq ($(3),)
    PYTHON3_PACKAGES_DEPENDS+=$(1)
  endif
  PYTHON3_LIB_FILES_DEL+=$(2)
  define Py3Package/$(1)/filespec
    ifneq ($(2),)
      $(subst $(space),$(newline),$(foreach lib_file,$(2),+|$(lib_file)))
      -|/usr/lib/python$(PYTHON3_VERSION)/*/test
      -|/usr/lib/python$(PYTHON3_VERSION)/*/tests
    endif
  endef
  Py3Package/$(1)/install?=:
endef

include ./files/python3-package-*.mk

define Package/python3
$(call Package/python3/Default)
  DEPENDS:=+python3-light $(foreach package,$(PYTHON3_PACKAGES_DEPENDS),+$(package))
endef

define Package/python3/description
  This package contains the (almost) full Python install.
  It's python3-light + all other packages.
endef

# Set READELF here so that the exact same readelf program name can be
# replaced in _sysconfigdata.py (in Py3Package/python3-base/install)
TARGET_CONFIGURE_OPTS+= \
	READELF="$(TARGET_CROSS)readelf"

EXTRA_LDFLAGS+= \
	-L$(PKG_BUILD_DIR) \
	-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib

# Bypass configure tests for cross compilation
CONFIGURE_VARS += \
	ac_cv_buggy_getaddrinfo=no \
	ac_cv_file__dev_ptc=no \
	ac_cv_file__dev_ptmx=yes

# Do not link with libbsd for flock
# https://github.com/openwrt/packages/issues/21161
CONFIGURE_VARS += \
	ac_cv_lib_bsd_flock=no

# Disable stdlib modules
# Check for a better way in the future: https://github.com/python/cpython/issues/98558
CONFIGURE_VARS += \
	py_cv_module__tkinter=n/a \
	py_cv_module_nis=n/a

# Workaround for hardfloat mips
# https://bugs.python.org/issue46265
ifneq ($(findstring mips,$(CONFIG_ARCH)),)
ifeq ($(CONFIG_HAS_FPU),y)
CONFIGURE_VARS += \
	ax_cv_check_cflags___fno_semantic_interposition=no
endif
endif

MAKE_VARS += \
	PYTHONSTRICTEXTENSIONBUILD=1

CONFIGURE_ARGS += \
	--enable-optimizations \
	--enable-shared \
	--disable-test-modules \
	--with-build-python \
	--with-system-ffi \
	--without-cxx-main \
	--without-ensurepip \
	$(if $(CONFIG_IPV6),--enable-ipv6) \
	$(if $(findstring mips,$(CONFIG_ARCH)),,--with-lto)

define Build/InstallDev
	$(INSTALL_DIR) $(1)/usr/include $(1)/usr/lib $(1)/usr/lib/pkgconfig
	$(INSTALL_DIR) $(2)/bin
	$(CP) \
		$(PKG_INSTALL_DIR)/usr/include/python$(PYTHON3_VERSION) \
		$(1)/usr/include/
	$(CP) \
		$(PKG_INSTALL_DIR)/usr/lib/python$(PYTHON3_VERSION) \
		$(PKG_INSTALL_DIR)/usr/lib/libpython$(PYTHON3_VERSION).so* \
		$(1)/usr/lib/
	grep \
		'^_PYTHON_HOST_PLATFORM=' \
		$(PKG_INSTALL_DIR)/usr/lib/python$(PYTHON3_VERSION)/config-$(PYTHON3_VERSION)/Makefile > \
		$(1)/usr/lib/python$(PYTHON3_VERSION)/config-$(PYTHON3_VERSION)/Makefile-vars
	$(CP) \
		$(PKG_INSTALL_DIR)/usr/lib/pkgconfig/python*.pc \
		$(1)/usr/lib/pkgconfig
	$(INSTALL_BIN) \
		$(PKG_INSTALL_DIR)/usr/bin/python$(PYTHON3_VERSION)-config \
		$(2)/bin/
	$(SED) \
		's|^prefix_real=.*$$$$|prefix_real="$(PYTHON3_DIR)"|' \
		$(2)/bin/python$(PYTHON3_VERSION)-config
endef

PYTHON3_BASE_LIB_FILES:= \
	/usr/lib/python$(PYTHON3_VERSION)/encodings \
	/usr/lib/python$(PYTHON3_VERSION)/_collections_abc.py \
	/usr/lib/python$(PYTHON3_VERSION)/_sitebuiltins.py \
	/usr/lib/python$(PYTHON3_VERSION)/_sysconfigdata.py \
	/usr/lib/python$(PYTHON3_VERSION)/_weakrefset.py \
	/usr/lib/python$(PYTHON3_VERSION)/abc.py \
	/usr/lib/python$(PYTHON3_VERSION)/codecs.py \
	/usr/lib/python$(PYTHON3_VERSION)/genericpath.py \
	/usr/lib/python$(PYTHON3_VERSION)/io.py \
	/usr/lib/python$(PYTHON3_VERSION)/os.py \
	/usr/lib/python$(PYTHON3_VERSION)/posixpath.py \
	/usr/lib/python$(PYTHON3_VERSION)/site.py \
	/usr/lib/python$(PYTHON3_VERSION)/sysconfig.py \
	/usr/lib/python$(PYTHON3_VERSION)/stat.py

PYTHON3_LIB_FILES_DEL+=$(PYTHON3_BASE_LIB_FILES)

define Py3Package/python3-base/filespec
+|/usr/bin/python$(PYTHON3_VERSION)
$(subst $(space),$(newline),$(foreach lib_file,$(PYTHON3_BASE_LIB_FILES),+|$(lib_file)))
endef

define Py3Package/python3-light/filespec
+|/usr/lib/python$(PYTHON3_VERSION)
-|/usr/lib/python$(PYTHON3_VERSION)/distutils/cygwinccompiler.py
-|/usr/lib/python$(PYTHON3_VERSION)/distutils/command/wininst*
-|/usr/lib/python$(PYTHON3_VERSION)/idlelib
-|/usr/lib/python$(PYTHON3_VERSION)/tkinter
-|/usr/lib/python$(PYTHON3_VERSION)/turtledemo
-|/usr/lib/python$(PYTHON3_VERSION)/lib-dynload/_test*.so
-|/usr/lib/python$(PYTHON3_VERSION)/pdb.doc
-|/usr/lib/python$(PYTHON3_VERSION)/test
-|/usr/lib/python$(PYTHON3_VERSION)/webbrowser.py
-|/usr/lib/python$(PYTHON3_VERSION)/*/test
-|/usr/lib/python$(PYTHON3_VERSION)/*/tests
-|/usr/lib/python$(PYTHON3_VERSION)/_osx_support.py
$(subst $(space),$(newline),$(foreach lib_file,$(PYTHON3_LIB_FILES_DEL),-|$(lib_file)))
endef

define Package/libpython3/install
	# Adding the lib-dynload folder (even just empty) suppresses 2 warnings when starting Python
	$(INSTALL_DIR) $(1)/usr/lib/python$(PYTHON3_VERSION)/lib-dynload/
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libpython$(PYTHON3_VERSION).so* $(1)/usr/lib/
endef

define Py3Package/python3-base/install
	$(INSTALL_DIR) $(1)/usr/bin
	$(LN) python$(PYTHON3_VERSION) $(1)/usr/bin/python3
	$(LN) python$(PYTHON3_VERSION) $(1)/usr/bin/python
  # This depends on being called before filespec is processed
	$(SED) 's|$(TARGET_AR)|ar|g;s|$(TARGET_CROSS)readelf|readelf|g;s|$(TARGET_CC)|gcc|g;s|$(TARGET_CXX)|g++|g' \
		$(PKG_INSTALL_DIR)/usr/lib/python$(PYTHON3_VERSION)/_sysconfigdata.py
endef

Py3Package/python3-light/install:=:
Py3Package/python3/install:=:

define Py3Package/python3/filespec
-|$(PYTHON3_PKG_DIR)
endef

# libuuid is provided by e2fsprogs and uuid/uuid.h is moved into
# $(STAGING_DIR_HOST)/include/e2fsprogs
HOST_CFLAGS += \
	-I$(STAGING_DIR_HOST)/include/e2fsprogs
HOST_CPPFLAGS += \
	-I$(STAGING_DIR_HOST)/include/e2fsprogs

HOST_LDFLAGS += \
	-Wl$(comma)-rpath$(comma)$(STAGING_DIR_HOSTPKG)/lib

ifeq ($(HOST_OS),Linux)
HOST_LDFLAGS += \
	-Wl,--no-as-needed -lrt
endif

# Would be nice to be able to do this, but hosts are very fiddly
# HOST_MAKE_VARS += \
# 	PYTHONSTRICTEXTENSIONBUILD=1

# Bypass configure test
HOST_CONFIGURE_VARS += \
	ac_cv_working_openssl_hashlib=yes

ifeq ($(HOST_OS),Darwin)
HOST_CONFIGURE_VARS += \
	ac_cv_header_libintl_h=no
HOST_MAKE_VARS += \
	USE_PYTHON_CONFIG_PY=1
endif

HOST_CONFIGURE_ARGS += \
	--enable-optimizations \
	--disable-test-modules \
	--with-ensurepip=upgrade \
	--with-ssl-default-suites=openssl \
	--with-system-expat \
	--without-cxx-main

define Host/Configure
	$(SED) 's/^ENABLE_USER_SITE = None$$$$/ENABLE_USER_SITE = False/' $(HOST_BUILD_DIR)/Lib/site.py
	$(call Host/Configure/Default)
	ls $(HOST_BUILD_DIR)/Lib/ensurepip/_bundled/setuptools-$(PYTHON3_SETUPTOOLS_VERSION)-py3-none-any.whl
	ls $(HOST_BUILD_DIR)/Lib/ensurepip/_bundled/pip-$(PYTHON3_PIP_VERSION)-py3-none-any.whl
endef

define Host/Install
	$(if $(wildcard $(HOST_PYTHON3_PKG_DIR)/.setuptools_installed_$(PYTHON3_SETUPTOOLS_VERSION)-$(PYTHON3_SETUPTOOLS_PKG_RELEASE)),,
		rm -rf \
			$(HOST_PYTHON3_PKG_DIR)/pkg_resources \
			$(HOST_PYTHON3_PKG_DIR)/setuptools \
			$(HOST_PYTHON3_PKG_DIR)/setuptools-* \
			$(HOST_PYTHON3_PKG_DIR)/.setuptools-patched* \
			$(HOST_PYTHON3_PKG_DIR)/.setuptools_installed_*
	)
	$(if $(wildcard $(HOST_PYTHON3_PKG_DIR)/.pip_installed_$(PYTHON3_PIP_VERSION)-$(PYTHON3_PIP_PKG_RELEASE)),,
		rm -rf \
			$(HOST_PYTHON3_PKG_DIR)/pip \
			$(HOST_PYTHON3_PKG_DIR)/pip-* \
			$(HOST_PYTHON3_PKG_DIR)/.pip-patched* \
			$(HOST_PYTHON3_PKG_DIR)/.pip_installed_*
	)
	$(call Host/Install/Default)
	$(if $(wildcard $(HOST_PYTHON3_PKG_DIR)/.setuptools_installed_$(PYTHON3_SETUPTOOLS_VERSION)-$(PYTHON3_SETUPTOOLS_PKG_RELEASE)),,
		$(call HostPatchDir,$(HOST_PYTHON3_PKG_DIR),./patches-host-setuptools,)
		touch $(HOST_PYTHON3_PKG_DIR)/.setuptools_installed_$(PYTHON3_SETUPTOOLS_VERSION)-$(PYTHON3_SETUPTOOLS_PKG_RELEASE)
	)
	$(if $(wildcard $(HOST_PYTHON3_PKG_DIR)/.pip_installed_$(PYTHON3_PIP_VERSION)-$(PYTHON3_PIP_PKG_RELEASE)),,
		$(call HostPatchDir,$(HOST_PYTHON3_PKG_DIR),./patches-host-pip,)
		touch $(HOST_PYTHON3_PKG_DIR)/.pip_installed_$(PYTHON3_PIP_VERSION)-$(PYTHON3_PIP_PKG_RELEASE)
	)
endef

$(eval $(call HostBuild))

$(foreach package, $(PYTHON3_PACKAGES),  \
	$(eval $(call Py3Package,$(package))) \
	$(eval $(call BuildPackage,$(package))) \
	$(eval $(call BuildPackage,$(package)-src)) \
)

$(eval $(call BuildPackage,libpython3))

$(eval $(call Py3Package,python3-base))
$(eval $(call Py3Package,python3-light))
$(eval $(call Py3Package,python3))

$(eval $(call BuildPackage,python3-base))
$(eval $(call BuildPackage,python3-light))
$(eval $(call BuildPackage,python3))

$(eval $(call BuildPackage,python3-base-src))
$(eval $(call BuildPackage,python3-light-src))