Fix cffi compilation with Python3

cross/cffi/PLIST

@@ -1 +1 @@
-lib:@PYTHON_SITE_PACKAGES@/_cffi_backend.so
+lib:@PYTHON_SITE_PACKAGES@/_cffi_backend*.so

cross/python3/Makefile

@@ -30,12 +30,13 @@ include ../../mk/spksrc.cross-cc.mk
 
 HOST_ARCH = $(shell uname -m)
 BUILD_ARCH = $(shell expr "$(TC_TARGET)" : '\([^-]*\)' )
-PYTHON_NATIVE = $(WORK_DIR)/../../../native/$(PKG_NAME)/work-native/$(PKG_DIR)/python
+PYTHON_NATIVE = $(WORK_DIR)/../../../native/$(PKG_NAME)/work-native/install/usr/local/bin/python$(PKG_VERS_MAJOR)
 PGEN_NATIVE = $(WORK_DIR)/../../../native/$(PKG_NAME)/work-native/$(PKG_DIR)/Parser/pgen
 HOSTPYTHON = $(WORK_DIR)/$(PKG_DIR)/hostpython
 HOSTPGEN = $(WORK_DIR)/$(PKG_DIR)/hostpgen
 HOSTPYTHON_LIB_NATIVE = $(WORK_DIR)/../../../native/$(PKG_NAME)/work-native/$(PKG_DIR)/build/lib.linux-$(HOST_ARCH)-$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR)
 PYTHON_LIB_NATIVE = $(WORK_DIR)/$(PKG_DIR)/build/lib.linux-$(HOST_ARCH)-$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR)
+PYTHON_SITE_PACKAGES_NATIVE = $(WORK_DIR)/../../../native/$(PKG_NAME)/work-native/install/usr/local/lib/python$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR)/site-packages
 PYTHON_LIB_CROSS = $(WORK_DIR)/$(PKG_DIR)/build/lib.linux-$(BUILD_ARCH)-$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR)
 PYTHON_LIB_DIR = lib/python$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR)
 PYTHON_INC_DIR = include/python$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR)
@@ -71,6 +72,7 @@ $(WORK_DIR)/python-cc.mk:
 	@echo HOSTPYTHON=$(HOSTPYTHON) > $@
 	@echo HOSTPYTHON_LIB_NATIVE=$(HOSTPYTHON_LIB_NATIVE) >> $@
 	@echo PYTHON_LIB_NATIVE=$(PYTHON_LIB_NATIVE) >> $@
+	@echo PYTHON_SITE_PACKAGES_NATIVE=$(PYTHON_SITE_PACKAGES_NATIVE) >> $@
 	@echo PYTHON_INTERPRETER=$(INSTALL_PREFIX)/bin/python >> $@
 	@echo PYTHON_VERSION=$(PKG_VERS_MAJOR).$(PKG_VERS_MINOR) >> $@
 	@echo PYTHON_LIB_CROSS=$(PYTHON_LIB_CROSS) >> $@

native/python3/Makefile

@@ -16,9 +16,21 @@ ADDITIONAL_CFLAGS = -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 CONFIGURE_ARGS = --enable-ipv6 --without-ensurepip
 
 COMPILE_TARGET = myCompile
+POST_INSTALL_TARGET = myPostInstall
 
 include ../../mk/spksrc.native-cc.mk
 
 .PHONY: myCompile
 myCompile:
 	@$(RUN) $(MAKE) Parser/pgen all
+
+PYTHON = $(WORK_DIR)/install/usr/local/bin/python3
+EASY_INSTALL = $(WORK_DIR)/install/usr/local/bin/easy_install
+PIP = $(WORK_DIR)/install/usr/local/bin/pip
+
+.PHONY: myPostInstall
+myPostInstall:
+	@$(MSG) Installing setuptools, pip and cffi
+	@$(RUN) wget https://bootstrap.pypa.io/ez_setup.py -O - | $(PYTHON)
+	@$(EASY_INSTALL) "pip==1.5.6"
+	@$(PIP) install "cffi==0.8.6"