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Re: static FORTRAN compilation set-up in libtool.m4

From: Wolfgang Kilian
Subject: Re: static FORTRAN compilation set-up in libtool.m4
Date: Thu, 2 Sep 2010 08:58:54 +0200 (CEST)
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)


I may step in here, since I wrote these lines:

The '-Wl,-Wl,,' is NOT a typo. The current nagfor version 5.2 invokes gcc for linking, not ld directly. Therefore the linker flags have to be wrapped twice. I discussed this with the NAG developers and they agree that this was a poor choice which they may change in a future version, but we have to live with this for now. The double wrapper works for me so far. I could not test this on OS other than Linux, however.

I'll try to run the test suite later.

We have implemented quite a few Fortran autoconf macros, in particular for testing various Fortran 2003 (and 2008) features, which might be useful for the autoconf distribution. We have tried to stay in line with the autoconf conventions, but it might be necessary that an autoconf expert looks after this before they could enter the distribution.


On Wed, 1 Sep 2010, Ralf Wildenhues wrote:

Hello Juergen,

* Juergen Reuter wrote on Wed, Sep 01, 2010 at 09:31:12PM CEST:
concerning the flags for the static FORTRAN compilation we would
like to ask whether it would be possible to include also a setup for the NAG
compiler. As we are using that compiler (versions 5.2, partially 5.1) on 32bit
and 64bit Linux, we have added the corresponding part

        # NAG Fortran compiler
        _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,'
        _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
        _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'

in libtool.m4 at line 4041 (version 2.2.10).

Thank you for the suggestion.  I found the compiler manual at
and I kind of wonder whether the -Wl,-Wl,, in your change is a typo.
Shouldn't it rather be
         _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'


Also, I would like to ask you to submit test results for this compiler,
so that we know how well we support it.  If you have version 2.2.10,
please build and test like this:
 ./configure F77=nagfor FC=nagfor CC=gcc CXX=no GCJ=no
 make -k all check

and send all output, plus tests/testsuite.log, gzip'ed.  That way we can
also fix things that we see are lacking.  You might want or need to use
FC='nagfor -f95' or so.

If you are interested to help, some of the Fortran macros in Autoconf
could be improved for nagfor as well, trying to find it, and setting
some of the flags.  I can cook up a patch if you're willing to test it.


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