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[PATCH 0/1] gnu: address@hidden: Make __DATE__ and __TIME__ macros repro

From: Marius Bakke
Subject: [PATCH 0/1] gnu: address@hidden: Make __DATE__ and __TIME__ macros reproducible.
Date: Sat, 21 Jan 2017 12:36:21 +0100

Hello Guix!

This patch should obsolete the 'snippets' that mess with the __DATE__
and __TIME__ macros in GCC.

It is a backport of the following two commits:;a=commitdiff;h=e3e8c48c4a494d9da741c1c8ea6c4c0b7c4ff934;a=commitdiff;h=dfa5c0d3f3e23e4fdb14857a42de376d9ff8601c

...with the ChangeLog entries omitted for easier maintenance.

They *should* be functionally identical to Debians patches:

...but I have not verified this. Any takers?

Tested with the following shell session:

$ cat date.c
#include <stdio.h>
int main()
    printf( "__DATE__ says: %s \n", __DATE__ );
    printf( "__TIME__ says: %s \n", __TIME__ );
    return 0;
$ ./pre-inst-env guix environment --ad-hoc address@hidden binutils glibc
[env]$ gcc date.c && ./a.out
__DATE__ says: Jan 21 2017
__TIME__ says: 11:28:06
[env]$ SOURCE_DATE_EPOCH=42 gcc date.c && ./a.out                               
__DATE__ says: Jan  1 1970
__TIME__ says: 00:00:42

Note: the patch is against 'master' but is intended for 'core-updates'.


Marius Bakke (1):
  gnu: address@hidden: Respect SOURCE_DATE_EPOCH in __DATE__ and __TIME__ 

 gnu/                                       |   2 +
 gnu/packages/gcc.scm                               |   4 +-
 .../patches/gcc-5-source-date-epoch-1.patch        | 223 +++++++++++
 .../patches/gcc-5-source-date-epoch-2.patch        | 410 +++++++++++++++++++++
 4 files changed, 638 insertions(+), 1 deletion(-)
 create mode 100644 gnu/packages/patches/gcc-5-source-date-epoch-1.patch
 create mode 100644 gnu/packages/patches/gcc-5-source-date-epoch-2.patch


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