Source: w3cam
Severity: normal
Tags: patch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: buildpath
X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org

The build path is embedded in /usr/bin/vidcat:

  
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/diffoscope-results/w3cam.html

  /build/1st/w3cam-0.7.2/vidcat.c:463
  vs.
  /build/2/w3cam-0.7.2/2nd/vidcat.c:463

The attached patch fixes this in debian/rules by passing CFLAGS to
configure including the -ffile-prefix-map argument.

With this patch applied w3cam should build reproducibly on
tests.reproducible-builds.org!

Thanks for maintaining w3cam!

live well,
  vagrant
From 99ae20a5760e5e25e3d4969c2bb9688df41b85e8 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagr...@reproducible-builds.org>
Date: Sun, 25 Sep 2022 01:12:31 +0000
Subject: [PATCH] debian/rules: Pass CFLAGS to configure, including
 -ffile-prefix-map to avoid embedding build paths.

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

diff --git a/debian/rules b/debian/rules
index fd931e5..1a1c35a 100755
--- a/debian/rules
+++ b/debian/rules
@@ -9,7 +9,7 @@ configure: configure-stamp
 configure-stamp:
 	dh_testdir
 
-	./configure --prefix=/usr --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info
+	CFLAGS="-ffile-prefix-map=$(CURDIR)=." ./configure --prefix=/usr --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info
 
 	touch configure-stamp
 
-- 
2.37.2

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