File reproducible.patch of Package epic

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File reproducible.patch of Package epic

commit 5b01b19fae8bc3fc6c3f27080a9337ddbaf8c619
Author: Bernhard M. Wiedemann <bwiedemann@suse.de>
Date:   Mon Mar 12 11:14:20 2018 +0100

Allow to not store build host and user
    
    and use __DATE__ and __TIME__ macros which are overridable in gcc
    in order to make builds reproducible.
    See https://reproducible-builds.org/ for why this is good.
    
    Note: this slightly changes the date format in the compile_info string

diff --git a/source/info.c.sh.in b/source/info.c.sh.in
index c7ff969..6df87b8 100644
--- a/source/info.c.sh.in
+++ b/source/info.c.sh.in
@@ -6,11 +6,10 @@
 info_c_sum=`cksum @srcdir@/info.c.sh`
 comp_host=`uname -n`
 comp_user=$LOGNAME
-comp_time=`date | \
-awk '{if (NF == 6) \
-         { print $1 " "  $2 " " $3 " "  $6 " at " $4 " " $5 } \
-else \
-         { print $1 " "  $2 " " $3 " " $7 " at " $4 " " $5 " " $6 }}'`
+if [ -n "$SOURCE_DATE_EPOCH" ] ; then
+    comp_host=reproducible
+    comp_user=reproducible
+fi
 
 # Dump the C file...
 cat > info.c << __E__O__F__
@@ -27,8 +26,8 @@ cat > info.c << __E__O__F__
 
 const char *compile_user = "$comp_user";
 const char *compile_host = "$comp_host";
-const char *compile_time = "$comp_time";
+const char *compile_time = __DATE__ " at " __TIME__;
 const char *info_c_sum   = "$info_c_sum";
-const char *compile_info = "Compiled by " USER "@$comp_host on $comp_time";
+const char *compile_info = "Compiled by " USER "@$comp_host on " __DATE__ " at " __TIME__;
 
 __E__O__F__

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