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bpo-29708: support SOURCE_DATE_EPOCH for build info #5313

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commodo commented Jan 25, 2018

The Modules/getbuildinfo.c file allows the use of
DATE and TIME macros to be defined via CFLAGS.

These vars, control the build date & time when the
interpreter is opened, and can be read via the
platform._sys_version() function.

So, a conversion from SOURCE_DATE_EPOCH to DATE & TIME
is required at build-time.

This is especially needed for platform._sys_version()
to work.
The installation of pip seems to rely on this.

The logic has been adapted from:
https://wiki.debian.org/ReproducibleBuilds/TimestampsProposal#Makefile

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

https://bugs.python.org/issue29708

bpo-29708: support SOURCE_DATE_EPOCH for build info
The `Modules/getbuildinfo.c` file allows the use of
DATE and TIME macros to be defined via CFLAGS.

These vars, control the build date & time when the
interpreter is opened, and can be read via the
`platform._sys_version()` function.

So, a conversion from SOURCE_DATE_EPOCH to DATE & TIME
is required at build-time.

This is especially needed for `platform._sys_version()`
to work.
The installation of pip seems to rely on this.

The logic has been adapted from:
 https://wiki.debian.org/ReproducibleBuilds/TimestampsProposal#Makefile

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