From 3adbdb63e29ed9a666e3c24a5533f6da3fe932a7 Mon Sep 17 00:00:00 2001 From: =?utf8?q?J=C3=A9r=C3=B4me=20Pouiller?= Date: Tue, 20 Dec 2016 14:46:24 +0100 Subject: [PATCH] python3: generate reproducible .pyc MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit .pyc files contain the modification time of the corresponding .py source. In order to make the build reproducible, we fix the modification time of all .py before compiling .pyc files. In addition, since pycompile relies on the modification time to know if a file needs to be recompiled, it is safer to force recompilation of all source files. This work was sponsored by `BA Robotic Systems'. Signed-off-by: Jérôme Pouiller Reviewed-by: Samuel Martin [Thomas: do not register PYTHON_FIX_TIME as a PYTHON_TARGET_FINALIZE_HOOKS, instead call it inside PYTHON_CREATE_PYC_FILES before doing the byte compilation.] Signed-off-by: Thomas Petazzoni --- package/python3/python3.mk | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/package/python3/python3.mk b/package/python3/python3.mk index c8f8e1bf04..7bd6405b5d 100644 --- a/package/python3/python3.mk +++ b/package/python3/python3.mk @@ -237,10 +237,18 @@ PYTHON3_PATH = $(TARGET_DIR)/usr/lib/python$(PYTHON3_VERSION_MAJOR)/sysconfigdat $(eval $(autotools-package)) $(eval $(host-autotools-package)) +ifeq ($(BR2_REPRODUCIBLE),y) +define PYTHON3_FIX_TIME + find $(TARGET_DIR)/usr/lib/python$(PYTHON3_VERSION_MAJOR) -name '*.py' -print0 | \ + xargs -0 --no-run-if-empty touch -d @$(SOURCE_DATE_EPOCH) +endef +endif + define PYTHON3_CREATE_PYC_FILES + $(PYTHON3_FIX_TIME) PYTHONPATH="$(PYTHON3_PATH)" \ $(HOST_DIR)/usr/bin/python$(PYTHON3_VERSION_MAJOR) \ - support/scripts/pycompile.py \ + support/scripts/pycompile.py $(if $(BR2_REPRODUCIBLE),--force) \ $(TARGET_DIR)/usr/lib/python$(PYTHON3_VERSION_MAJOR) endef -- 2.30.2