Bug#786593: please provide a --distrobuild build switch to allow reproducible builds

[Chris Lamb]

retitle 786593 wordwarvi: please make the build reproducible
tags 786593 + patch
thanks

Patch attached. (No need to add a "distrobuild" switch now we have
SOURCE_DATE_EPOCH).


Regards,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      la...@debian.org / chris-lamb.co.uk
       `-

diff --git a/stamp.c b/stamp.c
index 04b8456..e247c03 100644
--- a/stamp.c
+++ b/stamp.c
@@ -7,10 +7,18 @@ int main(int argc, char *argv[])
 {
        struct timeval tv;
        int uid;
+       char *source_date_epoch;
 
        gettimeofday(&tv, NULL);
        uid = getuid();
 
+       source_date_epoch = getenv("SOURCE_DATE_EPOCH");
+       if (source_date_epoch) {
+               printf("static int builder = 0;\n");
+               printf("static uint64_t builtat = %s;\n", source_date_epoch);
+               exit(0);        
+       }
+
        printf("static int builder = %d;\n", uid);
        printf("static uint64_t builtat = %d;\n", tv.tv_sec);