From owner-help-octave at bevo dot che dot wisc dot edu  Fri Feb  7 11:49:32 1997
Subject: make crash on linux
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: blair at hoodlum dot dseg dot ti dot com (arthur blair)
Cc: help-octave at bevo dot che dot wisc dot edu
Date: Fri, 7 Feb 1997 11:48:20 -0600

On  7-Feb-1997, arthur blair <blair at hoodlum dot dseg dot ti dot com> wrote:

| I'm trying to compile octave 202 on a redhat 4 linux box.
| I installed g77 & gcc 2.7.2.1 & the latest libraries from the CD.
| ./configure --enable-shared
| ran fine but make crashes with

| ld: cannot open -lieee: No such file or directory
| make[2]: *** [octave] Error 1
| make[2]: Leaving directory `/home/blair/ftp/octave-2.0.2/src'
| make[1]: *** [src] Error 2
| make[1]: Leaving directory `/home/blair/ftp/octave-2.0.2'
| make: *** [all] Error 2
| ludwig:/home/blair/ftp/octave-2.0.2#  
| 
| what & where should be libieee?

Here's the information from the README.Linux file about this problem:

  The linker can't find -lieee
  ----------------------------

  This can happen because your libraries don't match your version of
  gcc.  Some recent Linux distributions don't include a libieee.a file
  because IEEE support is now the default and the library is no longer
  needed, but the gcc specs file still adds -lieee to the linker command
  if gcc is invoked with the -mieeefp flag.  I believe that you should
  be able to fix this by editing the gcc specs file.  In it, you should
  find something like this:

    %{!shared: %{mieee-fp:-lieee} %{p:-lgmon} %{pg:-lgmon} \
    %{!ggdb:-lc} %{ggdb:-lg}}

  changing it to

    %{!shared: %{p:-lgmon} %{pg:-lgmon} %{!ggdb:-lc} %{ggdb:-lg}}

  should keep gcc from adding -lieee to the link command.  You can find
  the location of the specs file by running the command gcc -v.

  If you can't edit the gcc specs file for some reason, another solution
  that should work is to create an empty libieee.a file in the Octave
  src directory using the command:

    ar cq libieee.a

  NOTE: you should fix this problem (either by editing the specs file or
  by creating the library) *before* running configure and compiling
  Octave.  Otherwise, configure may incorrectly determine that your
  system doesn't have support for some IEEE math functions.


jwe