Debian Bug report logs - #1020817
aplus-fsf: reproducible-builds: Embedded build paths in binaries

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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: aplus-fsf: reproducible-builds: Embedded build paths in binaries

Date: Mon, 26 Sep 2022 19:21:23 -0700

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

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

The build path is embedded in various binaries:

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

  /usr/lib/aplus-fsf/libAplusGUI.so.0.0.0

  /build/1st/aplus-fsf-4.22.1/src/AplusGUI/../MSGUI/MSGC.H:58
  vs.
  /build/2/aplus-fsf-4.22.1/2nd/src/AplusGUI/../MSGUI/MSGC.H:58

The attached patch to debian/rules fixes this by adding adding
-ffile-prefix-map to CFLAGS and CXXFLAGS.

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

Thanks for maintaining aplus-fsf!

live well,
  vagrant

[0001-debian-rules-Add-ffile-prefix-map-to-CFLAGS-and-CXXF.patch (text/x-diff, inline)]

From 34cab0768b5a6e69a21a4f9384cb24f42a839333 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagrant@reproducible-builds.org>
Date: Tue, 27 Sep 2022 02:17:29 +0000
Subject: [PATCH] debian/rules: Add -ffile-prefix-map to CFLAGS and CXXFLAGS to
 avoid embedding build paths.

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

diff --git a/debian/rules b/debian/rules
index 84f8fd4..dd6e933 100755
--- a/debian/rules
+++ b/debian/rules
@@ -56,6 +56,8 @@ else
   CFLAGS += -O2
   CXXFLAGS += -O2
 endif
+CFLAGS += -ffile-prefix-map=$(CURDIR)=.
+CXXFLAGS += -ffile-prefix-map=$(CURDIR)=.
 export CFLAGS
 export CXXFLAGS
 export LDFLAGS
-- 
2.37.2

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