python,python3: export mk files outside of python package dirs

Since `lang/python` is it's own folder of Python packages
(for both Python 2 & 3), and these build rules are needed
in a lot of packages [especially Python packages],
putting them here makes sense architecturally,
to be shared.

This also helps get rid of the `include_mk` construct
which relies on OpenWrt core to provide, and seems
like a broken design idea that has persisted for a while.
Reason is: it requires that Python 2/3 be built to provide
these mk files for other Python packages,
which seems like a bad idea.

Long-term, there could be an issue where some other feeds
would require these mk files [e.g. telephony] for
some Python packages.
We'll see how we handle this a bit later.

For now we limit this to this feed.

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

1 files changed, 145 insertions, 0 deletions

diff --git a/lang/python/python-package.mk b/lang/python/python-package.mk
new file mode 100644
index 000000000..2bcae919e
--- /dev/null
+++ b/lang/python/python-package.mk
@@ -0,0 +1,145 @@
+#
+# Copyright (C) 2006-2016 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+# Note: include this after `include $(TOPDIR)/rules.mk in your package Makefile
+
+python_mk_path:=$(dir $(lastword $(MAKEFILE_LIST)))
+include $(python_mk_path)python-host.mk
+
+PYTHON_DIR:=$(STAGING_DIR)/usr
+PYTHON_BIN_DIR:=$(PYTHON_DIR)/bin
+PYTHON_INC_DIR:=$(PYTHON_DIR)/include/python$(PYTHON_VERSION)
+PYTHON_LIB_DIR:=$(PYTHON_DIR)/lib/python$(PYTHON_VERSION)
+
+PYTHON_PKG_DIR:=/usr/lib/python$(PYTHON_VERSION)/site-packages
+
+PYTHON:=python$(PYTHON_VERSION)
+
+PYTHONPATH:=$(PYTHON_LIB_DIR):$(STAGING_DIR)/$(PYTHON_PKG_DIR):$(PKG_INSTALL_DIR)/$(PYTHON_PKG_DIR)
+
+# These configure args are needed in detection of path to Python header files
+# using autotools.
+CONFIGURE_ARGS += \
+	_python_sysroot="$(STAGING_DIR)" \
+	_python_prefix="/usr" \
+	_python_exec_prefix="/usr"
+
+PKG_USE_MIPS16:=0
+# This is required in addition to PKG_USE_MIPS16:=0 because otherwise MIPS16
+# flags are inherited from the Python base package (via sysconfig module)
+ifdef CONFIG_USE_MIPS16
+  TARGET_CFLAGS += -mno-mips16 -mno-interlink-mips16
+endif
+
+define PyPackage
+
+  define Package/$(1)-src
+    $(call Package/$(1))
+    TITLE+= (sources)
+    DEPENDS:=$$$$(foreach dep,$$$$(filter +python-%,$$$$(DEPENDS)),$$$$(dep)-src)
+  endef
+
+  define Package/$(1)-src/description
+    $(call Package/$(1)/description).
+    (Contains the Python sources for this package).
+  endef
+
+  # Add default PyPackage filespec none defined
+  ifndef PyPackage/$(1)/filespec
+    define PyPackage/$(1)/filespec
+      +|$(PYTHON_PKG_DIR)
+    endef
+  endif
+
+  ifndef PyPackage/$(1)/install
+    define PyPackage/$(1)/install
+		if [ -d $(PKG_INSTALL_DIR)/usr/bin ]; then \
+			$(INSTALL_DIR) $$(1)/usr/bin ; \
+			$(CP) $(PKG_INSTALL_DIR)/usr/bin/* $$(1)/usr/bin/ ; \
+		fi
+    endef
+  endif
+
+  ifndef Package/$(1)/install
+  $(call shexport,PyPackage/$(1)/filespec)
+
+  define Package/$(1)/install
+	$(call PyPackage/$(1)/install,$$(1))
+	find $(PKG_INSTALL_DIR) -name "*\.exe" | xargs rm -f
+	if [ -e files/python-package-install.sh ] ; then \
+		$(SHELL) files/python-package-install.sh \
+			"$(PKG_INSTALL_DIR)" "$$(1)" \
+			"$(HOST_PYTHON_BIN)" "$$(2)" \
+			"$$$$$$$$$$(call shvar,PyPackage/$(1)/filespec)" ; \
+	elif [ -e $(STAGING_DIR)/mk/python-package-install.sh ] ; then \
+		$(SHELL) $(STAGING_DIR)/mk/python-package-install.sh \
+			"$(PKG_INSTALL_DIR)" "$$(1)" \
+			"$(HOST_PYTHON_BIN)" "$$(2)" \
+			"$$$$$$$$$$(call shvar,PyPackage/$(1)/filespec)" ; \
+	else \
+		echo "No 'python-package-install.sh' script found" ; \
+		exit 1 ; \
+	fi
+  endef
+
+  define Package/$(1)-src/install
+	$$(call Package/$(1)/install,$$(1),sources)
+  endef
+  endif # Package/$(1)/install
+endef
+
+# $(1) => commands to execute before running pythons script
+# $(2) => python script and its arguments
+# $(3) => additional variables
+define Build/Compile/HostPyRunTarget
+	$(call HostPython, \
+		$(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$(PYTHON_INC_DIR)" \
+		LDFLAGS="$(TARGET_LDFLAGS) -lpython$(PYTHON_VERSION)" \
+		_PYTHON_HOST_PLATFORM=linux2 \
+		__PYVENV_LAUNCHER__="/usr/bin/$(PYTHON)" \
+		$(3) \
+		, \
+		$(2) \
+	)
+endef
+
+# $(1) => build subdir
+# $(2) => additional arguments to setup.py
+# $(3) => additional variables
+define Build/Compile/PyMod
+	$(INSTALL_DIR) $(PKG_INSTALL_DIR)/$(PYTHON_PKG_DIR)
+	$(call Build/Compile/HostPyRunTarget, \
+		cd $(PKG_BUILD_DIR)/$(strip $(1)), \
+		./setup.py $(2), \
+		$(3))
+	find $(PKG_INSTALL_DIR) -name "*\.exe" | xargs rm -f
+endef
+
+define PyBuild/Compile/Default
+	$(foreach pkg,$(HOST_PYTHON_PACKAGE_BUILD_DEPENDS),
+		$(call host_python_pip_install_host,$(pkg))
+	)
+	$(call Build/Compile/PyMod,, \
+		install --prefix="/usr" --root="$(PKG_INSTALL_DIR)" \
+		--single-version-externally-managed \
+	)
+endef
+
+PyBuild/Compile=$(PyBuild/Compile/Default)
+
+ifeq ($(BUILD_VARIANT),python)
+define Build/Compile
+	$(call PyBuild/Compile)
+endef
+endif # python