[Ecls-list] Solaris SPARC issues with Sun complier - location of gmp specified.

[Juan Jose Garcia-Ripoll]

On Sun, Aug 2, 2009 at 12:50 AM, Dr. David
Kirkby<david.kirkby at onetel.net> wrote:
> Juan Jose Garcia-Ripoll wrote:
>>
>> On Sat, Aug 1, 2009 at 11:36 PM, Dr. David
>> Kirkby<david.kirkby at onetel.net> wrote:
>>>
>>> Following from my mail half an hour or so ago, here is what happens on
>>> t2 if the Sun compiler is used, but the location of the gmp library and
>>> header files are specified.
>>> Undefined                       first referenced
>>>  symbol                             in file
>>> __gmpn_perfect_square_p             dpp.o
>>> ld: fatal: Symbol referencing errors. No output written to dpp
>>> I've seen very similar error messages about __gmp.... undefined, when
>>> using the GNU compiler too.
>>
>> Yes, I have seen this, and I can not tell what this is about. GMP is
>> not used or referenced in the dpp program at all and those symbols
>> should not be linked in. There must be a problem with the GMP headers
>> and the Solaris versions of the compiler or something like that.
>
> Is dpp part of ECL or one of the libraries?

dpp is just a preprocessor for C code. It is used to translate the
code that makes the core of ECL. It is very basic C, using at most
fopen, fclose, strcpy, etc. I am thus surprised that the GMP symbols
ever got linked in.

> The libraries in /usr/local on 't2' have passed all self-tests and were
> built with an ABI of 32.

Ok, I presume that ECL should also be built with an ABI of 32 bits. I
mean, the best thing would be to build exactly as the rest Sage

> However, since Sage uses a huge range of things, it just includes
> *everything* needed - including a replacement for GMP. So we are not
> actually using GMP.

GMP seems to be the stopper here, but from what you say thee
replacement is building fine on all platforms that Sage supports. I
would say the right thing would be to let ECL use that replacement.
Eventually ECL might also evolve in the direction of using it: support
for OSX and Windows seems complete in MPIR.

> That builds headers and libraries with the name gmp (or at least can do). It
> is 100% compatible version.

This should do it: if the library names, headers and functions are
identical, we do not need to change anything in ECL to use that
replacement.

> Inside Sage, the includes go to SAGE_LOCAL/local/include ,the libraries to
> $SAGE_LOCAL/local/lib. Se we know EXACTLY where things are.

Configure ECl using
--with-system-gmp=yes CPPFLAGS=-I$SAGE_LOCAL/local/lib
LDFLAGS=-L$SAGE_LOCAL/lib CFLAGS="..." LDFLAGS="..."
where CFLAGS and LDFLAGS is an appropriate choice for the ABI that
MPIR is using.

Regarding sources, I would use the CVS tree. You can insert it in the
Sage tree that you have. This way, if I make any changes, you will get
them immediately and we can test different combinations.

Juanjo


-- 
Instituto de Física Fundamental, CSIC
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