Debian Bug report logs - #1021514
ssocr: reproducible-builds: build path embedded in /usr/bin/ssocr

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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: ssocr: reproducible-builds: build path embedded in /usr/bin/ssocr

Date: Sun, 09 Oct 2022 16:14:17 -0700

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

Source: ssocr
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/ssocr:

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

  /build/1st/ssocr-2.22.1/ssocr.c:54
  vs.
  /build/2/ssocr-2.22.1/2nd/ssocr.c:54

The attached patch to debian/rules fixes this by adding a dh_auto_build
override that passes the default CFLAGS as CCOPTIONS.

According to my local tests, with this patch applied, ssocr should
*almost* build reproducibly on tests.reproducible-builds.org! (I'll
submit a patch also for the remaining timestamp issue)

Thanks for maintaining ssocr!

live well,
  vagrant

[0002-debian-rules-Add-dh_auto_build-override-to-explicitl.patch (text/x-diff, inline)]

From 085cdf7a5b78f15adf72cd5dcdfe4007874e5cd7 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagrant@reproducible-builds.org>
Date: Sun, 9 Oct 2022 23:10:43 +0000
Subject: [PATCH 2/2] debian/rules: Add dh_auto_build override to explicitly
 pass the default CFLAGS.

---
 debian/rules | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/debian/rules b/debian/rules
index f864541..edda100 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,3 +13,6 @@ export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
 
 override_dh_auto_install:
 	@echo Do not use install target of upstream Makefile
+
+override_dh_auto_build:
+	dh_auto_build -- CFLAGS="$(CFLAGS)"
-- 
2.37.2

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Message #12 received at 1021514@bugs.debian.org (full text, mbox, reply):

From: Erik Auerswald <auerswal@unix-ag.uni-kl.de>

To: 1021514@bugs.debian.org

Subject: Required compiler flags?

Date: Mon, 8 May 2023 14:35:31 +0200

Hi Vagrant,

this is the upstream ssocr developer.

Can you tell me which additional compiler flags are needed for a
reproducible build of ssocr?  Do they differ between GCC and LLVM?
Since when do the compiler flags exist?

Additionally, it might be helpful if the Debian build process can add
Debian- or platform-specific CFLAGS, e.g., enabling PIE on platforms that
support it.  As such I'd say that something like the patch attached to
your bug report might be useful, even if I added the respective compiler
options for reproducible builds to the upstream Makefile.

Thanks,
Erik
-- 
Be water, my friend.
                        -- Bruce Lee

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