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Bug#1023957: gerstensaft: reproducible-builds: buildid differences in /usr/bin/beer



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

The buildid for /usr/bin/beer varies when built from a different path:

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

The attached patch to src/Makefile fixes this by adding
-ffile-prefix-map to CFLAGS.

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

Thanks for maintaining gerstensaft!

live well,
  vagrant
 
From 9d2ed6cb070220ced710c6453dfae9563082e9ef Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagrant@reproducible-builds.org>
Date: Sun, 13 Nov 2022 07:46:46 +0000
Subject: [PATCH] src/Makefile: Add -ffile-prefix-map to CFLAGS to avoid
 embedding the build path.

https://reproducible-builds.org/docs/build-path/
---
 src/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Makefile b/src/Makefile
index d81003e..ce6cc41 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -23,6 +23,7 @@ CC = gcc
 
 CFLAGS=-g -Wall \
 	-DG_DISABLE_DEPRECATED \
+	-ffile-prefix-map=$(CURDIR)=.
 
 
 GTK_CFLAGS=$(shell pkg-config gtk+-2.0 --cflags)
-- 
2.38.1

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