File: 0004-Seed-RNG-to-0-during-builds.patch

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From: Antonio Terceiro <terceiro@debian.org>
Date: Tue, 16 Aug 2016 11:13:12 -0300
Subject: Seed RNG to 0 during builds

This helps making the build reproducible
---
 ext/RMagick/rmmain.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ext/RMagick/rmmain.c b/ext/RMagick/rmmain.c
index 44dbed2..cec0786 100644
--- a/ext/RMagick/rmmain.c
+++ b/ext/RMagick/rmmain.c
@@ -1621,6 +1621,10 @@ Init_RMagick2(void)
     SetWarningHandler(rm_warning_handler);
 
     RB_GC_GUARD(observable);
+
+    if (getenv("SOURCE_DATE_EPOCH") != NULL) {
+        SeedPseudoRandomGenerator(0);
+    }
 }