[Minios-devel] [UNIKRAFT/PYTHON3 PATCH 11/12] Makefile.uk: Add rule for creating root filesystem

[Costin Lupu <costin.lupu@xxxxxxxxx>]

The Python interpreter needs a filesystem where to keep its libraries. This
patch creates a Python virtual environment and installs the Python 3 standard
library in /lib/python3.7 directory. For creating the filesystem the following
command has to be run:

$ make python-rootfs path=<directory>

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
 Makefile.uk | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Makefile.uk b/Makefile.uk
index 8fbc37c..27eaba5 100644
--- a/Makefile.uk
+++ b/Makefile.uk
@@ -450,3 +450,24 @@ LIBPYTHON3_PREPARED_DEPS = \
 $(LIBPYTHON3_BUILD)/.prepared: $(LIBPYTHON3_PREPARED_DEPS)
 
 UK_PREPARE += $(LIBPYTHON3_BUILD)/.prepared
+
+################################################################################
+# Root filesystem
+################################################################################
+
+# Build root filesystem for Python interpreter
+PYTHON_ROOTFS = $(APP_BASE)/$(path)
+
+# Create virtual environment
+$(PYTHON_ROOTFS)/.keep:
+       python3 -m venv $(PYTHON_ROOTFS) && touch $@
+
+# Configure origin
+$(LIBPYTHON3_SRC)/config.status:
+       cd $(LIBPYTHON3_SRC) && ./configure --prefix=$(shell realpath 
$(APP_BASE)/$(path))
+
+# Install Python standard library into virtual environment
+.PHONY: python-rootfs
+python-rootfs: $(PYTHON_ROOTFS)/.keep $(LIBPYTHON3_SRC)/config.status
+       cd $(LIBPYTHON3_SRC) && make libinstall
+       cp $(LIBPYTHON3_BASE)/_sysconfigdata.py $(PYTHON_ROOTFS)/lib/python3.7/
-- 
2.20.1


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