Bug#909476: botan: please make the build reproducible

[Chris Lamb]

Source: botan
Version: 2.6.0-3
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: buildpath
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

Hi,

Whilst working on the Reproducible Builds effort [0], we noticed
that botan could not be built reproducibly.

This is because it encodes CFLAGS into a shipped file, and these will
vary on the build path due to Reproducible-related parameters passed to
GCC. 

Patch attached that strips them in debian/rules but an alternative
approach would be to simply strip these from upstream's build.in
template that builds this file.


 [0] https://reproducible-builds.org/


Regards,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby at debian.org / chris-lamb.co.uk
       `-
-------------- next part --------------
--- a/debian/rules	2018-09-24 12:17:17.191836843 +0100
--- b/debian/rules	2018-09-24 12:41:16.465608212 +0100
@@ -6,6 +6,7 @@
 
 include /usr/share/dpkg/architecture.mk
 
+DEVPKG = $(CURDIR)/debian/libbotan-2-dev
 DOCPKG = $(CURDIR)/debian/libbotan-2-doc
 
 override_dh_clean:
@@ -35,6 +36,7 @@
 override_dh_install:
 	dh_install
 	rm -rf $(DOCPKG)/usr/share/doc/libbotan-2-doc/manual/.doctrees
+	sed -i -e 's/ -f\(debug\|file\)-prefix-map=[^ ]*=\. / /' $(DEVPKG)/usr/include/botan-2/botan/build.h
 	dh_missing --list-missing
 
 %: