Package: seqan2
Severity: normal
Tags: patch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: fixfilepath ftbfs
X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org

When the reproducible=+fixfilepath feature is enabled (either through
DEB_BUILD_OPTIONS, or using a dpkg that enables this by default),
seqan2 fails to build from source:

  
http://qa-logs.debian.net/2020/09/26.fixfilepath/seqan2_2.4.0+dfsg-12_unstable_fixfilepath.log

While the "fixfilepath" feature is not currently enabled in
dpkg-buildflags by default, it may become the default at some point in
the future, and can by triggered manually by setting
DEB_BUILD_OPTIONS=reproducible=+fixfilepath in the build environment.

More information about this issue is available at:

  
https://tests.reproducible-builds.org/debian/issues/unstable/ftbfs_due_to_f-file-prefix-map_issue.html

I have not identified the exact cause of this issue for
seqan2, but a common triggering issue is test suites
expecting __FILE__ to resolve to an absolute path.

The first patch fixes a typo using DEB_BUILD_MAINT_OPTIONS, and the
second patch works around the fixfilepath issue by disabling the
fixfilepath feature in debian/rules using
DEB_BUILD_MAINT_OPTIONS=-fixfilepath.

Thanks for maintaining seqan2!

live well,
  vagrant
From 009ac13af33ec86f14e7ff84ac3100d909c2a264 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagr...@reproducible-builds.org>
Date: Fri, 23 Oct 2020 06:15:03 +0000
Subject: [PATCH 1/2] debian/rules: Fix typo when setting
 DEB_BUILD_MAINT_OPTIONS.

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

diff --git a/debian/rules b/debian/rules
index b4fe567..f13e4a5 100755
--- a/debian/rules
+++ b/debian/rules
@@ -3,7 +3,7 @@
 # Uncomment this to turn on verbose mode.
 export DH_VERBOSE=1
 
-export DH_BUILD_MAINT_OPTIONS = hardening=+all
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 include /usr/share/dpkg/pkg-info.mk
 export HOME=$(CURDIR)/fakehome
 
-- 
2.20.1

From 49c63cbea825b90920c3ad35894f5f2b09acb3f9 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <vagr...@reproducible-builds.org>
Date: Fri, 23 Oct 2020 03:45:23 +0000
Subject: [PATCH 2/2] debian/rules: Disable fixfilepath feature, as it triggers
 build failures when enabled.

https://tests.reproducible-builds.org/debian/issues/unstable/ftbfs_due_to_f-file-prefix-map_issue.html
---
 debian/rules | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/debian/rules b/debian/rules
index f13e4a5..03c8e5e 100755
--- a/debian/rules
+++ b/debian/rules
@@ -3,7 +3,9 @@
 # Uncomment this to turn on verbose mode.
 export DH_VERBOSE=1
 
-export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+# debian/rules: Disable fixfilepath feature, as it triggers build
+# failures when enabled.
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all reproducible=-fixfilepath
 include /usr/share/dpkg/pkg-info.mk
 export HOME=$(CURDIR)/fakehome
 
-- 
2.20.1

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