[Ecls-list] How can we build ECL on OS X in 64-bit

Juan Jose Garcia-Ripoll juanjose.garciaripoll at googlemail.com
Mon Sep 7 10:01:48 UTC 2009

2009/9/7 Dr. David Kirkby <david.kirkby at onetel.net>:
> As you know, we are having some problems building ECL on 64-bit OS X (on
> the machine bsd.math.washington.edu).

Yes, I have seen the emails. I am trying different builds here in my
laptop, since I did not ask for an account at bsd  -- I thought I
would not need it.

> 1) Will version 9.8.4  build, or do I need to check out the CVS?

9.84 will not build in 64 bit mode because OSX wrongly reports to use
a 32-bit operating system and processor (uname). This confuses the
configuration process. I had to manually patch this in src/aclocal.m4
and src/configure.in

> 2) Does one need to add -m64 to CFLAGS and CXXFLAGS?

No. Just use ./configure ... ABI=64 or export ABI=64 as an environment
variable. ECL will add the right flag for OS X. Incidentally, as I
told you in the other email, OS X needs -m64 _also_ when linking.
Otherwise gcc will try to use 32-bits binaryes.

Incidentally I just fixed another problem with our old version of GMP:
it does not build in OS X when ABI=64 is used. I did not notice before
this because I use a locally configured version, but I have fixed this
today. It should solve the problems with the error message "Do not
know how to make install".

Unfortunately such a change involves also verifying that no other port
broke, and for this I must wait until all automated builds have
finished. Feel free to try, though.

> 3) Does one need to set the ABI - and if so what to?

ABI=64 for 64-bits build. Not setting it will use just the default
values of the operating system -- which for Snow Leopard seem to
depend on which mode the OS was booted.

> I've tried a CVS checkout, and 9.8.4, with every combination of ABI and
> CFLAGS I can think of, but I can't seem to generate any 64-bit
> libraries. If I add the compiler option -m64 to CFLAGS, the configure
> script seems to remove it.

No, this should not happen. ECL is preserving _whatever_ flags you
pass to CFLAGS.


Instituto de Física Fundamental, CSIC
c/ Serrano, 113b, Madrid 28006 (Spain)

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