Fwd: Build Error on FreeBSD 12

[Joel Sherrill]

Looks like a failing in the GDB configure magic which finds libiconv

---------- Forwarded message ---------
From: John Baldwin <jhb at freebsd.org>
Date: Fri, Nov 8, 2019 at 11:20 AM
Subject: Re: Build Error on FreeBSD 12
To: <joel at rtems.org>, <gdb at sourceware.org>


On 10/30/19 11:41 AM, Joel Sherrill wrote:
> Hi
>
> When building gdb 8.3 for *-rtems5 targets on FreeBSD 12, we are getting
> undefined errors for libiconv symbols. The messages are like this:
>
> ================================
>  CXXLD  gdb
> charset.o: In function `convert_between_encodings(char const*, char
const*,
> unsigned char const*, unsigned int,
> int, obstack*, transliterations)':
> charset.c:(.text+0x251): undefined reference to `libiconv_open'
> charset.c:(.text+0x2df): undefined reference to `libiconv'
> charset.c:(.text+0x434): undefined reference to `libiconv_close'
> charset.c:(.text+0x486): undefined reference to `libiconv_close'
> charset.o: In function `wchar_iterator::wchar_iterator(unsigned char
> const*, unsigned int, char const*, unsigned
>  int)':
> charset.c:(.text+0x4f9): undefined reference to `libiconv_open'
> ================================
>
> Q1: The compile line is shortened in the output so I can't tell what it is
> linking command is really doing. What's the magic for having the full
> command lines printed?
>
> Q2: Does this sound familiar to anyone? We build fine on other OSes and
> apparently this
> doesn't happen on FreeBSD 11. Any hint is appreciated.
>
> The config.log does show it found iconv().

Hmm, I haven't had a bare ./configure work on FreeBSD for quite some time
as it doesn't add the needed -L /usr/local/lib for libiconv even though
the configure scripts figure out that it needs -I /usr/local/include.
However, that was true for me on older releases, not just 12.  The FreeBSD
port (and my own build scripts for doing gdb work) work around this by
defining LDFLAGS="-L /usr/local/lib" in the environment when invoking
./configure, e.g.:

env LDFLAGS="-L /usr/local/lib" ./configure

-- 
John Baldwin
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rtems.org/pipermail/devel/attachments/20191108/e8d04a82/attachment.html>