Bug#1024638: opencv: embeds build path in Python extension

[Victor Westerhuis]

Source: opencv
Version: 4.6.0+dfsg-7
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: buildpath
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

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Hash: SHA256

Hello maintainer,

Apologies for yet another small reproducible build patch. I neglected
to check my resolution for #972566 for reproducibility.

Stripping the rpath from the Python extension makes its BuildId
reproducible. The extension still works and both arch:all and arch:any
builds succeed locally.

Thanks for maintaining OpenCV!

Regards,

Victor Westerhuis

- -- System Information:
Debian Release: bookworm/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (100, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.0.0-4-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=en_NL.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en_US:en:nl_NL:nl
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

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>From fcd6886f1012fc20bf1a9bc194c120c889d5e220 Mon Sep 17 00:00:00 2001
From: Victor Westerhuis <victor at westerhu.is>
Date: Sun, 20 Nov 2022 22:20:24 +0100
Subject: [PATCH] Make Python extensions reproducible

Do not embed the build directory in the rpath.
---
 debian/rules | 1 +
 1 file changed, 1 insertion(+)

diff --git a/debian/rules b/debian/rules
index b4d654102..6bd845023 100755
--- a/debian/rules
+++ b/debian/rules
@@ -151,6 +151,7 @@ override_dh_auto_configure:
 		-- --name=opencv --system=custom --configure-args "\
 			dh_auto_configure -S cmake -D modules/python -B {build_dir} -- \
 				-GNinja \
+				-DCMAKE_SKIP_RPATH=ON \
 				-DOpenCV_BINARY_DIR=$(CURDIR)/$(BUILDDIR) \
 				-DOPENCV_PYTHON_STANDALONE_INSTALL_PATH={install_dir} \
 				-DOPENCV_SKIP_PYTHON_LOADER=ON \
-- 
2.38.1