Debian Bug report logs - #1024279
tolua++: reproducible-builds: build path embedded in tolua++5.1

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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: tolua++: reproducible-builds: build path embedded in tolua++5.1

Date: Wed, 16 Nov 2022 15:14:55 -0800

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

Source: tolua++
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 /usr/bin/tolua++5.1:

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

  /build/1st/tolua++-1.0.93/src/bin/tolua.c:84
  vs.
  /build/2/tolua++-1.0.93/2nd/src/bin/tolua.c:84

The attached patch to debian/rules fixes this by adding
-ffile-prefix-map to the CCFLAGS included in debian/custom.py.

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

Thanks for maintaining tolua++!

live well,
  vagrant

[0001-debian-rules-Avoid-embedding-build-paths-by-adding-f.patch (text/x-diff, inline)]

From d911d743084b67294d20379c4f9375f75dcac9f1 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagrant@reproducible-builds.org>
Date: Wed, 16 Nov 2022 22:52:46 +0000
Subject: [PATCH] debian/rules: Avoid embedding build paths by adding
 -ffile-prefix-map to CCFLAGS.

---
 debian/rules | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/debian/rules b/debian/rules
index 1f3c3d5..8552863 100755
--- a/debian/rules
+++ b/debian/rules
@@ -10,6 +10,8 @@ override_dh_clean:
 
 override_dh_auto_configure:
 	cp $(CURDIR)/debian/custom.py $(CURDIR)
+	# Add -ffile-prefix-map to CCFLAGS to avoid embedding build paths.
+	sed -i -e "s,CCFLAGS = .,CCFLAGS =['-ffile-prefix-map=$(CURDIR)=.'\,,g" $(CURDIR)/custom.py
 	scons prefix=$(CURDIR)/debian/libtolua++5.1-dev/usr configure
 
 override_dh_auto_build:
-- 
2.38.1

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