ruby1.8-dev: /usr/lib/ruby/1.8/mkmf.rb have_func() fails to find functions in libc

[Debian Bug Importer]

Automatically imported from Debian bug report #347759 http://bugs.debian.org/347759

[Debian Bug Importer (debzilla)]

Message-ID: <email address hidden>
Date: Thu, 12 Jan 2006 14:01:20 +0000
From: Roger Leigh <email address hidden>
To: Debian Bug Tracking System <email address hidden>
Subject: ruby1.8-dev: /usr/lib/ruby/1.8/mkmf.rb have_func() fails to find functions
 in libc

Package: ruby1.8-dev
Version: 1.8.4-1
Severity: serious
Justification: Causes other packages to FTBFS

>From libintl-gettext-ruby/0.11-5; Bug #322648:

$ cat extconf.rb
require 'mkmf'

$LDFLAGS = "-L/usr/local/lib";
$CFLAGS = "-I/usr/local/include";
have_library( "xpg4", "setlocale" );
have_header( "locale.h" );
if ( have_header( "libintl.h" ) and (have_library( "intl", "gettext" )
or have_func( "gettext" )) )
    create_makefile( "intl" );
end

This fails to find gettext() in libc, and so the build fails.

Regards,
Roger

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: powerpc (ppc)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)

Versions of packages ruby1.8-dev depends on:
ii libruby1.8 1.8.4-1 Libraries necessary to run Ruby 1.

Versions of packages ruby1.8-dev recommends:
ii ruby1.8 1.8.4-1 Interpreter of object-oriented scr

-- no debconf information

[Debian Bug Importer (debzilla)]

Message-ID: <email address hidden>
Date: Thu, 12 Jan 2006 23:21:00 +0900
From: akira yamada <email address hidden>
To: Roger Leigh <email address hidden>, <email address hidden>
Subject: Re: Bug#347759: ruby1.8-dev: /usr/lib/ruby/1.8/mkmf.rb have_func()
 fails to find functions in libc

Roger Leigh wrote:
> $ cat extconf.rb
> require 'mkmf'
>
> $LDFLAGS = "-L/usr/local/lib";
> $CFLAGS = "-I/usr/local/include";
> have_library( "xpg4", "setlocale" );
> have_header( "locale.h" );
> if ( have_header( "libintl.h" ) and (have_library( "intl", "gettext" )
> or have_func( "gettext" )) )
> create_makefile( "intl" );
> end
>
> This fails to find gettext() in libc, and so the build fails.

I think it is not a bug of mkmf.rb.

  $ ruby1.8 -rmkmf -e 'have_func("gettext")'
  checking for gettext()... no
  $ ruby1.8 -rmkmf -e 'have_func("gettext", "libintl.h")'
  checking for gettext()... yes

How about the following patch?:

--- extconf.rb.orig 2006-01-12 23:17:49.000000000 +0900
+++ extconf.rb 2006-01-12 23:17:27.000000000 +0900
@@ -1,11 +1,11 @@
 require 'mkmf'

 $LDFLAGS = "-L/usr/local/lib";
 $CFLAGS = "-I/usr/local/include";
 have_library( "xpg4", "setlocale" );
 have_header( "locale.h" );
 if ( have_header( "libintl.h" ) and
     (have_library( "intl", "gettext" ) or
- have_func( "gettext" )) )
+ have_func( "gettext", "libintl.h" )) )
     create_makefile( "intl" );
 end

--
akira yamada

[Debian Bug Importer (debzilla)]

Message-ID: <email address hidden>
Date: Thu, 12 Jan 2006 14:58:45 +0000
From: Roger Leigh <email address hidden>
To: akira yamada <email address hidden>
Cc: <email address hidden>
Subject: Re: Bug#347759: ruby1.8-dev: /usr/lib/ruby/1.8/mkmf.rb have_func() fails to find functions
 in libc

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akira yamada <email address hidden> writes:

> Roger Leigh wrote:
>> $ cat extconf.rb
>> require 'mkmf'
>>
>> $LDFLAGS = "-L/usr/local/lib";
>> $CFLAGS = "-I/usr/local/include";
>> have_library( "xpg4", "setlocale" );
>> have_header( "locale.h" );
>> if ( have_header( "libintl.h" ) and (have_library( "intl", "gettext" )
>> or have_func( "gettext" )) )
>> create_makefile( "intl" );
>> end
>>
>> This fails to find gettext() in libc, and so the build fails.
>
> I think it is not a bug of mkmf.rb.
>
> $ ruby1.8 -rmkmf -e 'have_func("gettext")'
> checking for gettext()... no
> $ ruby1.8 -rmkmf -e 'have_func("gettext", "libintl.h")'
> checking for gettext()... yes
>
> How about the following patch?:

This looks great, thanks.

I'm not a Ruby hacker myself, and assumed it was emulating the
autoconf AC_TRY_LINK, which does not require the header to be present.

I'll post the patch to the original bug.

Many thanks,
Roger

- --
Roger Leigh
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