Source: tevent
Severity: normal
Tags: patch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: buildpath
X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org

The build path and resulting Build ID for various libraries is embedded:

  
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/diffoscope-results/tevent.html

  /usr/lib/x86_64-linux-gnu/libtevent.so.0.11.0

  /build/1st/tevent-0.11.0/bin/default/../../tevent.c:303
  vs.
  /build/2/tevent-0.11.0/2nd/bin/default/../../tevent.c:303

The attached patch to debian/rules fixes this by passing
-ffile-prefix-map via CFLAGS in the dh_auto_configure override.

Alternately, updating to use the CFLAGS passed via dh/debhelper would
also likely fix this.

With this patch applied tevent should build reproducibly on
tests.reproducible-builds.org!

live well,
  vagrant
From b07f0c48683e16712d21147feee2d5f85df67d9b Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagr...@reproducible-builds.org>
Date: Mon, 7 Mar 2022 00:37:54 +0000
Subject: [PATCH] debian/rules: Add -ffile-prefix-map to CFLAGS.

Without this, the full path used during the build environment gets
embedded in various binaries.

https://reproducible-builds.org/docs/build-path/
---
 debian/rules | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/debian/rules b/debian/rules
index 856ec0e..a52d533 100755
--- a/debian/rules
+++ b/debian/rules
@@ -14,6 +14,8 @@ else
 CFLAGS += -O2
 endif
 
+CFLAGS += -ffile-prefix-map=$(CURDIR)=.
+
 LDFLAGS += -Wl,--as-needed
 
 DESTDIR=$(CURDIR)/debian/tmp
-- 
2.35.1

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