From: David Bremner <david@tethera.net>
To: Suvayu Ali <fatkasuvayu+linux@gmail.com>, notmuch@notmuchmail.org
Subject: Re: notmuch release 0.20.2 now available
In-Reply-To: <20150630084018.GO24926@chitra.no-ip.org>
References: <87h9pplqer.fsf@maritornes.cs.unb.ca>
 <20150630063942.GM24926@chitra.no-ip.org>
 <87a8vhlkdv.fsf@maritornes.cs.unb.ca>
 <20150630084018.GO24926@chitra.no-ip.org>
User-Agent: Notmuch/0.20.2 (http://notmuchmail.org) Emacs/24.4.1
 (x86_64-pc-linux-gnu)
Date: Tue, 30 Jun 2015 19:02:52 +0200
Message-ID: <87r3otjfib.fsf@maritornes.cs.unb.ca>
MIME-Version: 1.0
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Suvayu Ali <fatkasuvayu+linux@gmail.com> writes:

>
> Yes, I have looked at what the official packages[1] do, I do exactly the
> same[2].  Essentially the spec file does the following:
>
>   pushd bindings/ruby
>       ruby extconf.rb --vendor --with-cflags="%{optflags}"
>       make %{?_smp_mflags}
>   popd

I think the problem is contained in the original message. Since we want
to create a shared library "notmuch.so" for ruby to import, we need to
compile the C files in bindings/ruby with -fPIC.

I don't know if this is Debian specific, or ruby version specific, but
on my Debian Jessie machine with ruby 2.1, the generated Makefile
bindings/ruby/Makefile has

CFLAGS   = $(CCDLFLAGS) -g -O2 -fstack-protector-strong -Wformat
-Werror=format-security -fPIC $(ARCH_FLAG)

in it

even when invoked outside the notmuch build system; e.g.

% cd bindings/ruby && ruby extconf.rb

I guess the first step is to see if the -fPIC flag is also there on
Fedora, and if not, why not. If I look at the builds for 0.19 [1]
it seems it is. But notice there it is not required to pass it in to "--with-cflags"

d

[1] https://kojipkgs.fedoraproject.org/packages/notmuch/0.19/1.fc21/data/logs/x86_64/build.log
    - I couldn't find x86_64 build logs for 0.20