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From: Ishmael on 5 Jan 2007 01:25
I am trying to compile the Math::GMP module locally (not as root). I
have successfully built gmp-4.2.1, but am having trouble getting the
Perl wrapper to work. I am doing the following:

perl Makefile.PL PREFIX=/home/kstahl/PERL/Math-GMP-2.04

Here, I receive the following messages:

Note (probably harmless): No library found for -lgmp
Writing Makefile for Math::GMP

Now in order to point Make in the right direction to find my
installation of gmp, I edited the Makefile, and added the correct path
to CCFLAGS, i.e. the last entry below:

CCFLAGS = -I/usr/local/include/db3 -I/usr/local/include
-I/apps/supported/include -I/home/kstahl/PERL/gmp-4.2.1

Then I run make and get these messages:
cc -c -I/usr/local/include/db3 -I/usr/local/include
-I/apps/supported/include
-I/home/kstahl/PERL/gmp-4.2.1 -O -DVERSION=\"2.04\"
-DXS_VERSION=\"2.04\"
-KPIC "-I/apps/gnu/perl-5.6.1/lib/sol2.sun4/CORE" GMP.c
Running Mkbootstrap for Math::GMP ()
chmod 644 GMP.bs
rm -f blib/arch/auto/Math/GMP/GMP.so
LD_RUN_PATH="" cc -G -L/usr/local/lib/db3 -L/usr/local/lib
-L/apps/supported/lib/sol2.sun4 GMP.o -o
blib/arch/auto/Math/GMP/GMP.so
chmod 755 blib/arch/auto/Math/GMP/GMP.so
cp GMP.bs blib/arch/auto/Math/GMP/GMP.bs
chmod 644 blib/arch/auto/Math/GMP/GMP.bs
Manifying blib/man3/Math::GMP.3pm

It looks like everything worked, but then I run 'make test' and get the
following errors:
PERL_DL_NONLAZY=1 /usr/local/bin/perl "-MExtUtils::Command::MM" "-e"

"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/gmppm....Can't load
'/home/kstahl/PERL/Math-GMP-2.04/blib/arch/auto/Math/GMP/GMP.so' for
module
Math::GMP: ld.so.1: /usr/local/bin/perl: fatal: relocation error:
file
/home/kstahl/PERL/Math-GMP-2.04/blib/arch/auto/Math/GMP/GMP.so:
symbol
__gmpz_init_set_str: referenced symbol not found at
/apps/gnu/perl-5.6.1/lib/sol2.sun4/DynaLoader.pm line 206.
at t/gmppm.t line 7
Compilation failed in require at t/gmppm.t line 7.
BEGIN failed--compilation aborted at t/gmppm.t line 7.
t/gmppm....dubious

Test returned status 255 (wstat 65280, 0xff00)
FAILED--1 test script could be run, alas--no output ever seen
make: *** [test_dynamic] Error 255

I checked in the directory shown above, and GMP.so is right there, as
expected. Any help with this will be greatly appreciated. Thanks!

From: Sherm Pendley on 5 Jan 2007 02:05
"Ishmael" <stahl.karl(a)gmail.com> writes:

> I am trying to compile the Math::GMP module locally (not as root). I
> have successfully built gmp-4.2.1, but am having trouble getting the
> Perl wrapper to work. I am doing the following:
>
> perl Makefile.PL PREFIX=/home/kstahl/PERL/Math-GMP-2.04
>
> Here, I receive the following messages:
>
> Note (probably harmless): No library found for -lgmp

Not so harmless after all... :-/

> Writing Makefile for Math::GMP
>
> Now in order to point Make in the right direction to find my
> installation of gmp, I edited the Makefile, and added the correct path
> to CCFLAGS, i.e. the last entry below:

For changes like this, it's easier to edit Makefile.PL before running it -
in this case it's only 10 lines, as opposed to many lines of stuff you'd
need to wade through in the generated Makefile.

Also, editing Makefile.PL will make it easier to send your changes to the
module's maintainer. Not that the maintainer will want this particular
change of course... but next time you might find and fix a bug, who knows?

Anyway, you've only done half of what you need to do - along with telling
the compiler where to find the GMP headers, you also need to tell it where
to find the libgmp.so binary.

Does /home/kstahl/PERL/gmp-4.2.1 have include/ and lib/ subdirectories under
it? If so, add an INC param to the call to WriteMakefile(), and change the
LIBS param in Makefile.PL like this:

'INC' => '-I/home/kstahl/PERL/gmp-4.2.1/include',
'LIBS' => '-L/home/kstahl/PERL/gmp-4.2.1/lib -lgmp',

Adjust the paths as needed if there are no include/ and/or lib/ subdirs.

sherm--

--
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From: Ishmael on 5 Jan 2007 13:29
Thank you for the very helpful and incredibly prompt response.
Everything compiled beautifully.

In case someone else reads this, I should mention one other problem
that I had to solve before this package finally passed 'make test'.
The problem comes from the compilation of the C gmp package that the
Perl code rests on. While that compilation came up error-free on my
machine (even after running 'make check'), when I ran 'make test' from
the Perl package, I ended up with errors along the lines of the
following:

ld: fatal: file /home/kstahl/PERL/gmp-4.2.1/lib/libgmp.so: wrong ELF
class:
ELFCLASS64

These problems apparently stem from incompatibilities in the libraries.
I am running on a Unix platform with Solaris 5.8 and perl 5.6.1. I
don't know what exactly the problem is, but the solution is to compile
gmp in 32 bit mode, but adding the ABI=32 option when running
configure. After doing this, the Perl module compiled error-free.

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