[oe-commits] [openembedded-core] 07/27: python2.7: improve reproducibility

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commit 4102060dac6a7aa4040cc2cc863090b02741cfa9
Author: Juro Bystricky <juro.bystricky at intel.com>
AuthorDate: Sat Aug 19 10:21:57 2017 -0700

    python2.7: improve reproducibility
    
    The compiled .pyc files contain time stamp corresponding to the compile time.
    This prevents binary reproducibility. This patch allows to achieve binary
    reproducibility by overriding the build time stamp by the value
    exported via SOURCE_DATE_EPOCH.
    
    Patch by Bernhard M. Wiedemann, backported from https://github.com/python/cpython/pull/296
    
    [YOCTO#11241]
    
    Signed-off-by: Juro Bystricky <juro.bystricky at intel.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 ...pport_SOURCE_DATE_EPOCH_in_py_compile_2.7.patch | 34 ++++++++++++++++++++++
 meta/recipes-devtools/python/python_2.7.13.bb      |  1 +
 2 files changed, 35 insertions(+)

diff --git a/meta/recipes-devtools/python/python/support_SOURCE_DATE_EPOCH_in_py_compile_2.7.patch b/meta/recipes-devtools/python/python/support_SOURCE_DATE_EPOCH_in_py_compile_2.7.patch
new file mode 100644
index 0000000..1265179
--- /dev/null
+++ b/meta/recipes-devtools/python/python/support_SOURCE_DATE_EPOCH_in_py_compile_2.7.patch
@@ -0,0 +1,34 @@
+The compiled .pyc files contain time stamp corresponding to the compile time.
+This prevents binary reproducibility. This patch allows to achieve binary
+reproducibility by overriding the build time stamp by the value 
+exported via SOURCE_DATE_EPOCH. 
+
+Patch by Bernhard M. Wiedemann
+
+Upstream-Status: Backport
+
+Signed-off-by: Juro Bystricky <juro.bystricky at intel.com>
+
+Fri Feb 24 17:08:25 UTC 2017 - bwiedemann at suse.com
+
+- Add reproducible.patch to allow reproducible builds of various
+  python packages like python-amqp
+  Upstream: https://github.com/python/cpython/pull/296
+
+
+@@ -0,0 +1,15 @@
+Index: Python-2.7.13/Lib/py_compile.py
+===================================================================
+--- Python-2.7.13.orig/Lib/py_compile.py
++++ Python-2.7.13/Lib/py_compile.py
+@@ -108,6 +108,10 @@ def compile(file, cfile=None, dfile=None
+             timestamp = long(os.fstat(f.fileno()).st_mtime)
+         except AttributeError:
+             timestamp = long(os.stat(file).st_mtime)
++        sde = os.environ.get('SOURCE_DATE_EPOCH')
++        if sde and timestamp > int(sde):
++            timestamp = int(sde)
++            os.utime(file, (timestamp, timestamp))
+         codestring = f.read()
+     try:
+         codeobject = __builtin__.compile(codestring, dfile or file,'exec')
diff --git a/meta/recipes-devtools/python/python_2.7.13.bb b/meta/recipes-devtools/python/python_2.7.13.bb
index 98bc8ad..4d73cd2 100644
--- a/meta/recipes-devtools/python/python_2.7.13.bb
+++ b/meta/recipes-devtools/python/python_2.7.13.bb
@@ -28,6 +28,7 @@ SRC_URI += "\
   file://add-CROSSPYTHONPATH-for-PYTHON_FOR_BUILD.patch \
   file://Don-t-use-getentropy-on-Linux.patch \
   file://pass-missing-libraries-to-Extension-for-mul.patch \
+  file://support_SOURCE_DATE_EPOCH_in_py_compile_2.7.patch \
 "
 
 S = "${WORKDIR}/Python-${PV}"

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