Re: [netcdfgroup] 64-bit build with Snow Leopard?

  • To: Ian Harris <i.harris@xxxxxxxxx>
  • Subject: Re: [netcdfgroup] 64-bit build with Snow Leopard?
  • From: Mary Haley <haley@xxxxxxxx>
  • Date: Wed, 9 Dec 2009 12:55:23 -0700

Attachment: HDF Build [KyngChaos Wiki].pdf
Description: Adobe PDF document



Hi Harry,

Guangshan Chen sent me this document for getting HDF 4.x to build. The notes are for Leopard and Tiger, but they seemed to work for me under Snow Leopard. I haven't done full testing on this, yet, so buyer beware!

--Mary

On Dec 9, 2009, at 11:25 AM, Ian Harris wrote:

Hi All

Sorted. Roy M, Dennis H and Sean M all helped, but it was Ted Mansell who nailed it - I was too confident in the gfortran (I used the MacResearch.org installer).

For reference, this is *the* Snow Leopard gfortran, and it works with the 64-bit kernel (so far!):

http://prdownloads.sourceforge.net/hpc/gfortran-snwleo-intel- bin.tar.gz?download

(link from http://hpc.sourceforge.net)

Cheers! Now I have to get HDF-4 working :(

Harry

On 8 Dec 2009, at 18:51, Ian Harris wrote:

Hi

Has anyone successfully built NetCDF 4 as 64-bit, on a Mac Pro with Snow Leopard and the 64-bit kernel enabled?

I'm hitting problems with the F77 interface, i think. I've set all compiler flags I can find to '-m64' (just using GNU/free compilers, no Absoft etc).

Configure line:

ianharris% arch -arch x86_64 ./configure --with-hdf5=/usr/local -- with-zlib=/usr/local --with-szlib=/usr/local --prefix=/usr/local -- disable-f90 --enable-netcdf-4 --enable-64bit

(I have tried it with and without the 'arch' prefix, it doesn't seem to help)

If I specify G77 as the compiler, it doesn't seem to like the -m64 option:

:
checking for C-equivalent to Fortran routine "SUB"... configure: error: Could not compile conftest.f
:

If, on the other hand, I specify gfortran, it compiles the tests but then fails thusly:

:
checking if Fortran "byte" is C "signed char"... configure: error: Could not link conftestf.o and conftest.o
:

I modded configure so it didn't delete those two files.. this is the real problem I think:

:
ianharris% file conftestf.o conftest.o
conftestf.o: Mach-O 64-bit object ppc64
conftest.o:  Mach-O 64-bit object x86_64
:

In the config.log file, this is the relevant bit (I think):

:
configure:24126: checking for C-equivalent to Fortran routine "SUB"
configure:24133: /usr/local/bin/gfortran -c -m64 conftest.f
configure:24136: $? = 0
configure:24148: result: sub_
configure:24170: checking for Fortran "byte"
configure:24178: /usr/local/bin/gfortran -c -m64 conftest.f
configure:24181: $? = 0
configure:24183: result: yes
configure:24201: checking for Fortran "integer*2"
configure:24209: /usr/local/bin/gfortran -c -m64 conftest.f
configure:24212: $? = 0
configure:24214: result: yes
configure:24241: checking if Fortran "byte" is C "signed char"
configure:24251: cc -c -m64 -m64 conftest.c
conftest.c: In function 'sub_':
conftest.c:4: warning: incompatible implicit declaration of built- in function 'exit'
configure:24254: $? = 0
configure:24257: /usr/local/bin/gfortran -m64 -c conftestf.f
configure:24260: $? = 0
configure:24263: /usr/local/bin/gfortran -o conftest -m64 conftestf.o conftest.o ld: warning: in /usr/lib/crt1.10.5.o, missing required architecture ppc64 in file
ld: warning: in conftest.o, file is not of required architecture
ld: warning: in /usr/lib/libSystemStubs.a, missing required architecture ppc64 in file ld: warning: in /usr/lib/libSystem.dylib, missing required architecture ppc64 in file ld: in /usr/lib/libSystem.B.dylib, missing required architecture ppc64 in file
collect2: ld returned 1 exit status
configure:24266: $? = 1
configure:24289: error: Could not link conftestf.o and conftest.o
:

Now, this really isn't my area of expertise (um, as keen blogwatchers will know ;) but it looks to me as though gfortran isn't working as a 64-bit compiler?

All compilers and supporting externals were built with the 64-bit kernel installed and compiler env variables set '-m64'. As far as I know.

If anyone has any suggestions.. that would be just great!

Cheers

Harry

Ian "Harry" Harris
Climatic Research Unit
School of Environmental Sciences
University of East Anglia
Norwich NR4 7TJ
United Kingdom

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