RE: [gentoo-embedded] configure: error: forced unwind support is required

["Andre Rhone" <accolade12@comcast.net>]

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Try glibc-2.5-r1 and binutils 2.17.50.0.9. You may have to unmask them
first. Also, to protect your system from human error, you may want to do it
in a 32/64bit chrooted env.
http://www.gentoo.org/proj/en/base/amd64/howtos/index.xml?part=1
<http://www.gentoo.org/proj/en/base/amd64/howtos/index.xml?part=1&chap=2>
&chap=2
 
(e.g.) USE="-fortran" crossdev-stable --binutils 2.17.50.0.9 --gcc 4.1.2
--libc 2.5-r1 --kernel 2.6.19.2-r2 -t armv5te-softfloat-linux-gnueabi


  _____  

From: Chuck McKenzie [mailto:cmckenzie@tomotherapy.com] 
Sent: Wednesday, March 21, 2007 4:13 PM
To: gentoo-embedded@lists.gentoo.org
Subject: [gentoo-embedded] configure: error: forced unwind support is
required


 
Hi all,
 
I'm new to Gentoo embedded and fairly new to Gentoo, so I apologize if I am
missing something obvious. I'm having trouble getting the crossdev toolchain
up and running with a current portage sync.  Could someone please point me
in the direction of fixing this?
 
Here's what I'm seeing:
 
buildhost ~ # crossdev -t i686-unknown-linux-gnu
----------------------------------------------------------------------------
----------------------------------------------------------------------------
------
 * Host Portage ARCH:     x86
 * Target Portage ARCH:   x86
 * Target System:         i686-unknown-linux-gnu
 * Stage:                 4 (C/C++ compiler)
 
 * binutils:              binutils-[latest]
 * gcc:                   gcc-[latest]
 * headers:               linux-headers-[latest]
 * libc:                  glibc-[latest]
 
 * PORTDIR_OVERLAY:       /usr/local/portage
 * PORT_LOGDIR:           /var/log/portage
 * PKGDIR:                /usr/portage/packages/cross/i686-unknown-linux-gnu
 * PORTAGE_TMPDIR:        /var/tmp/cross/i686-unknown-linux-gnu
  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _
-  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~
-
 * Forcing the latest versions of binutils-config/gcc-config ...
[ ok ]
 * Log: /var/log/portage/cross-i686-unknown-linux-gnu-binutils.log
 * Emerging cross-binutils ...
[ ok ]
 * Log: /var/log/portage/cross-i686-unknown-linux-gnu-gcc-stage1.log
 * Emerging cross-gcc-stage1 ...
[ ok ]
 * Log: /var/log/portage/cross-i686-unknown-linux-gnu-linux-headers.log
 * Emerging cross-linux-headers ...
[ ok ]
 * Log: /var/log/portage/cross-i686-unknown-linux-gnu-glibc.log
 * Emerging cross-glibc ...
 
 * glibc failed :(

>From /var/log/portage/cross-i686-unknown-linux-gnu-glibc.log
 
<snip>
checking for forced unwind support... no
configure: error: forced unwind support is required
 
!!! ERROR: cross-i686-unknown-linux-gnu/glibc-2.5 failed.
Call stack:
  ebuild.sh, line 1614:   Called dyn_compile
  ebuild.sh, line 971:   Called qa_call 'src_compile'
  environment, line 4123:   Called src_compile
  glibc-2.5.ebuild, line 1119:   Called src_compile
  glibc-2.5.ebuild, line 1130:   Called toolchain-glibc_src_compile
  glibc-2.5.ebuild, line 240:   Called glibc_do_configure 'nptl'
  glibc-2.5.ebuild, line 900:   Called die
 
!!! failed to configure glibc
!!! If you need support, post the topmost build error, and the call stack if
relevant.
!!! A complete build log is located at
'/var/tmp/cross/i686-unknown-linux-gnu/portage/cross-i686-unknown-linux-gnu/
glibc-2.5/temp/build.log'.
 
!!! This ebuild is from an overlay: '/usr/local/portage'


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