python packages: move all things python under lang/python

I admit this may be be a bit aggressive, but the lang
folder is getting cluttered/filled up with Python, PHP, Perl,
Ruby, etc. packages.

Makes sense to try to group them into per-lang folders.

I took the Pythons.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/python3/files/python3-package.mk

@@ -0,0 +1,137 @@
+#
+# Copyright (C) 2007-2016 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+$(call include_mk, python3-version.mk)
+
+PYTHON3_DIR:=$(STAGING_DIR)/usr
+PYTHON3_BIN_DIR:=$(PYTHON3_DIR)/bin
+PYTHON3_INC_DIR:=$(PYTHON3_DIR)/include/python$(PYTHON3_VERSION)
+PYTHON3_LIB_DIR:=$(PYTHON3_DIR)/lib/python$(PYTHON3_VERSION)
+
+PYTHON3_PKG_DIR:=/usr/lib/python$(PYTHON3_VERSION)/site-packages
+
+PYTHON3:=python$(PYTHON3_VERSION)
+
+PYTHON3PATH:=$(PYTHON3_LIB_DIR):$(STAGING_DIR)/$(PYTHON3_PKG_DIR):$(PKG_INSTALL_DIR)/$(PYTHON3_PKG_DIR)
+
+# These configure args are needed in detection of path to Python header files
+# using autotools.
+CONFIGURE_ARGS += \
+	_python_sysroot="$(STAGING_DIR)" \
+	_python_prefix="/usr" \
+	_python_exec_prefix="/usr"
+
+PKG_USE_MIPS16:=0
+# This is required in addition to PKG_USE_MIPS16:=0 because otherwise MIPS16
+# flags are inherited from the Python base package (via sysconfig module)
+ifdef CONFIG_USE_MIPS16
+  TARGET_CFLAGS += -mno-mips16 -mno-interlink-mips16
+endif
+
+define Py3Package
+
+  define Package/$(1)-src
+    $(call Package/$(1))
+    TITLE+= (sources)
+    DEPENDS:=$$$$(foreach dep,$$$$(filter +python3-%,$$$$(DEPENDS)),$$$$(dep)-src)
+  endef
+
+  define Package/$(1)-src/description
+    $(call Package/$(1)/description).
+    (Contains the Python3 sources for this package).
+  endef
+
+  # Add default PyPackage filespec none defined
+  ifndef Py3Package/$(1)/filespec
+    define Py3Package/$(1)/filespec
+      +|$(PYTHON3_PKG_DIR)
+    endef
+  endif
+
+  ifndef Py3Package/$(1)/install
+    define Py3Package/$(1)/install
+		if [ -d $(PKG_INSTALL_DIR)/usr/bin ]; then \
+			$(INSTALL_DIR) $$(1)/usr/bin ; \
+			$(CP) $(PKG_INSTALL_DIR)/usr/bin/* $$(1)/usr/bin/ ; \
+		fi
+    endef
+  endif
+
+  $(call shexport,Py3Package/$(1)/filespec)
+
+  define Package/$(1)/install
+	$(call Py3Package/$(1)/install,$$(1))
+	find $(PKG_INSTALL_DIR) -name "*\.exe" | xargs rm -f
+	if [ -e files/python3-package-install.sh ] ; then \
+		$(SHELL) files/python3-package-install.sh \
+			"$(PKG_INSTALL_DIR)" "$$(1)" \
+			"$(HOST_PYTHON3_BIN)" "$$(2)" \
+			"$$$$$$$$$$(call shvar,Py3Package/$(1)/filespec)" ; \
+	elif [ -e $(STAGING_DIR)/mk/python3-package-install.sh ] ; then \
+		$(SHELL) $(STAGING_DIR)/mk/python3-package-install.sh \
+			"$(PKG_INSTALL_DIR)" "$$(1)" \
+			"$(HOST_PYTHON3_BIN)" "$$(2)" \
+			"$$$$$$$$$$(call shvar,Py3Package/$(1)/filespec)" ; \
+	else \
+		echo "No 'python3-package-install.sh' script found" ; \
+		exit 1 ; \
+	fi
+  endef
+
+  define Package/$(1)-src/install
+	$$(call Package/$(1)/install,$$(1),sources)
+  endef
+endef
+
+$(call include_mk, python3-host.mk)
+
+# $(1) => commands to execute before running pythons script
+# $(2) => python script and its arguments
+# $(3) => additional variables
+define Build/Compile/HostPy3RunTarget
+	$(call HostPython3, \
+		$(if $(1),$(1);) \
+		CC="$(TARGET_CC)" \
+		CCSHARED="$(TARGET_CC) $(FPIC)" \
+		CXX="$(TARGET_CXX)" \
+		LD="$(TARGET_CC)" \
+		LDSHARED="$(TARGET_CC) -shared" \
+		CFLAGS="$(TARGET_CFLAGS)" \
+		CPPFLAGS="$(TARGET_CPPFLAGS) -I$(PYTHON3_INC_DIR)" \
+		LDFLAGS="$(TARGET_LDFLAGS) -lpython$(PYTHON3_VERSION)" \
+		_PYTHON_HOST_PLATFORM=linux2 \
+		__PYVENV_LAUNCHER__="/usr/bin/$(PYTHON3)" \
+		$(3) \
+		, \
+		$(2) \
+	)
+endef
+
+# $(1) => build subdir
+# $(2) => additional arguments to setup.py
+# $(3) => additional variables
+define Build/Compile/Py3Mod
+	$(INSTALL_DIR) $(PKG_INSTALL_DIR)/$(PYTHON3_PKG_DIR)
+	$(call Build/Compile/HostPy3RunTarget, \
+		cd $(PKG_BUILD_DIR)/$(strip $(1)), \
+		./setup.py $(2), \
+		$(3))
+	find $(PKG_INSTALL_DIR) -name "*\.exe" | xargs rm -f
+endef
+
+define Py3Build/Compile/Default
+	$(call Build/Compile/Py3Mod,, \
+		install --prefix="/usr" --root="$(PKG_INSTALL_DIR)" \
+		--single-version-externally-managed \
+	)
+endef
+
+ifeq ($(BUILD_VARIANT),python3)
+define Build/Compile
+	$(call Py3Build/Compile/Default)
+endef
+endif # python3