RE: EXT :Re: octave_idx_type and fortran

[Miller, Herbert D (IS)]

What you mentioned is possible?  I built with a 4.9.3 that was part of a GNAT 
installation.  Do I need to add something to LD_LIBRARY_PATH, or do I need to 
make a soft link?
I do have /usr/lib/libstdc++.so.6, and it is a soft link to 
/usr/lib/libstdc++.so.6.0.13

However, the libstdc++ in my tool chain points to libstdc++.so.6.0.20 in the 
tool chain.

How do I tell if either of these are GLIBCXX_3.4.15 or GLIBCXX_3.4.20, and how 
can I be sure that Octave can finds them? ... and how can I Octave library need 
both of them?



-----Original Message-----
From: Mike Miller [mailto:address@hidden 
Sent: Monday, July 25, 2016 12:16 PM
To: Miller, Herbert D (IS)
Cc: address@hidden
Subject: EXT :Re: octave_idx_type and fortran

On Mon, Jul 25, 2016 at 13:21:47 +0000, Miller, Herbert D (IS) wrote:
>> There were many small problems to overcome (too many too list) to 
>> finally get Octave to configure and build.  I finally received this 
>> messages from the "make" command:
>> 
>> Octave successfully built.  Now choose from the following:
>> 
>>   ./run-octave       - to run in place test before installing
>>   make check - to run the tests
>>   make install       - to install (PREFIX=/usr/local)
>> 
>> I tried the ./run-octave command and received the following messages:
>>   . . . octave-4.0.0/src/.libs/lt-octave-gui:  /usr/lib64/libstdc++.so.6:  
>> version `GLIBCXX_3.4.15' not found (required by . . . . 
>> octave-4.0.0/libgui/.libs/liboctgui.so.1)
>>   . . . octave-4.0.0/src/.libs/lt-octave-gui:  /usr/lib64/libstdc++.so.6:  
>> version `GLIBCXX_3.4.20' not found (required by . . . . 
>> octave-4.0.0/libgui/.libs/liboctgui.so.1)
>>   . . . octave-4.0.0/src/.libs/lt-octave-gui:  /usr/lib64/libstdc++.so.6:  
>> version `GLIBCXX_3.4.15' not found (required by . . . . 
>> octave-4.0.0/libinterp/.libs/liboctinterp.so.3)
>>   . . . octave-4.0.0/src/.libs/lt-octave-gui:  
>> /usr/lib64/libstdc++.so.6:  version `GLIBCXX_3.4.20' not found 
>> (required by . . . . octave-4.0.0/libinterp/.libs/liboctinterp.so.3)
>> 
>> I am not sure what to do here.  Also, how can 1 library depend on 2 
>> different versions of another library?

> Am I right in that you are trying to build Octave on a RHEL or CentOS 6 
> system with a locally installed version of gcc 4.9.3 (in /usr/local/bin 
> maybe)?
>
> The error message above suggests that you are mixing toolchain versions, 
> because the program you just built depends on a version of libstdc++ that 
> your system libraries are not providing.
>
> Did you perhaps arrange for the executables for your local version of gcc to 
> be preferred, but forget to arrange for the associated runtime libraries from 
> your version of gcc before the system versions of the same libraries?

--
mike