Debian Bug report logs - #1029800
aribas: reproducible-builds: build id differences in /usr/bin/aribas

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Vagrant Cascadian <vagrant@reproducible-builds.org>

To: submit@bugs.debian.org

Subject: aribas: reproducible-builds: build id differences in /usr/bin/aribas

Date: Fri, 27 Jan 2023 14:16:18 -0800

[Message part 1 (text/plain, inline)]

Source: aribas
Severity: normal
Tags: patch
User: reproducible-builds@lists.alioth.debian.org
Usertags: buildpath
X-Debbugs-Cc: reproducible-bugs@lists.alioth.debian.org

Building from a different directory results in a different build id
embedded in /usr/bin/aribas:

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

  Build·ID:·7652115b45271e393b31873efede354e1cb36769
  vs.
  Build·ID:·49cfcb42aa13407e5d7e5ce6e50352610d448a78

The attached patch to the upstream src/Makefile fixes this by adding the
-ffile-prefix-map argument in CFLAGS, removing the build path before the
buildid is calculated.

According to my local tests, with this patch applied aribas should build
reproducibly on tests.reproducible-builds.org!

Thanks for maintaining aribas!

live well,
  vagrant

[0001-src-Makefile-Avoid-build-path-changing-the-build.patch (text/x-diff, inline)]

From a5495a44f199c31eb6f8b9ca50c4790b241b0c6d Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagrant@reproducible-builds.org>
Date: Fri, 27 Jan 2023 22:04:51 +0000
Subject: [PATCH] src/Makefile: Avoid build path changing the build id.

https://reproducible-builds.org/docs/build-path/
https://tests.reproducible-builds.org/debian/issues/unstable/build_id_differences_only_issue.html
---
 src/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Makefile b/src/Makefile
index 9441456..c26eda1 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -12,7 +12,7 @@
 # the next two lines.
 
 CC = gcc
-CFLAGS = -DUNiX -DPROTO -O -v -g
+CFLAGS = -DUNiX -DPROTO -O -v -g -ffile-prefix-map=$(CURDIR)=.
 
 MEMFLAG1 = -DMEM=16
 # MEM may be set to any integer value from 1 to 32.
-- 
2.39.1

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