Debian Bug report logs - #1003375
clfft: reproducible-builds: BuildId differences triggered by RPATH

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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: clfft: reproducible-builds: BuildId differences triggered by RPATH

Date: Sat, 08 Jan 2022 19:24:04 -0800

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

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

The RPATH contains the build path resulting in different buildid:

  https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/clfft.html

The attached patch to debian/rules passes
-DCMAKE_BUILD_RPATH_USE_ORIGIN=ON via a dh_auto_configure override,
which should use a relative path for RPATH.

Alternately, updating the packaging to debhelper compat level 14 should
fix this, although it is currently an experimental compat level.


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


Thanks for maintaining clfft!


live well,
  vagrant

[0001-debian-rules-Pass-DCMAKE_BUILD_RPATH_USE_ORIGIN-ON-v.patch (text/x-diff, inline)]

From 9eff952ac22144e4bf09e537cb2bc4e364de126a Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagrant@reproducible-builds.org>
Date: Sun, 9 Jan 2022 03:21:02 +0000
Subject: [PATCH] debian/rules: Pass -DCMAKE_BUILD_RPATH_USE_ORIGIN=ON via
 dh_auto_configure override.

This avoids embedding the full path in RPATH, which triggers BuildId
differences.

https://tests.reproducible-builds.org/debian/issues/unstable/cmake_rpath_contains_build_path_issue.html
---
 debian/rules | 1 +
 1 file changed, 1 insertion(+)

diff --git a/debian/rules b/debian/rules
index 08d4d3c..b16d997 100755
--- a/debian/rules
+++ b/debian/rules
@@ -17,6 +17,7 @@ BUILD_OPTIONS = \
 	-DBUILD_RUNTIME=ON \
 	-DBUILD_SHARED_LIBS=ON \
 	-DBUILD_TEST=OFF \
+	-DCMAKE_BUILD_RPATH_USE_ORIGIN=ON \
 	-DSUFFIX_LIB="/$(DEB_TARGET_MULTIARCH)"
 
 %:
-- 
2.34.1

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