[R-SIG-Mac] Which gfortran for Leopard?

[Kasper Daniel Hansen]

Remember that Apple has two version of GCC on Leopard: 4.0 and 4.2.  You are using 4.0, you might want to switch to 4.2.  In Tiger there used to be gcc_select (or select_gcc) that let you choose between 3.x and 4.0, I don't remember if that is still around on Leopard.

The error seems to indicate that you need 4.2 in order to use Simon's gfortran.

Kasper

On Jan 22, 2010, at 16:04 PM, cstrato wrote:

> Dear Simon,
> 
> Thank you for this information.
> 
> Now I have installed gfortran-4.2-5564-darwin9.tar.gz on Leopard and tried to compile ROOT again, but this time I got the following error:
> g++ -dynamiclib -single_module -undefined dynamic_lookup -install_name @rpath/libminicern.so -O2 -m64 -o lib/libminicern.so misc/minicern/src/cernlib.o -ldl misc/minicern/src/hbook.o misc/minicern/src/kernlib.o misc/minicern/src/zebra.o libgfortran.dylib /usr/lib/gcc/i686-apple-darwin9/4.2.1/libgfortranbegin.a
> i686-apple-darwin9-g++-4.0.1: libgfortran.dylib: No such file or directory
> 
> I know that this is not necessarily an R-related question but I would greatly appreciate your help if possible (at least it is a Mac- and somehow a BioC-related question).
> 
> When I have tried to compile ROOT with gfortran-4.2.3.dmg I got the following error:
> gfortran -O2 -m64 -o bin/g2root main/src/g2root.o -Llib lib/libminicern.so /usr/local/lib/gcc/i686-apple-darwin8/4.2.3/../../../x86_64/libgfortran.dylib /usr/local/lib/gcc/i686-apple-darwin8/4.2.3/x86_64/libgfortranbegin.a -lm -Wl,-rpath, at loader_path/../lib    -pthread -ldl
> ld: -rpath can only be used when targeting Mac OS X 10.5 or later
> 
> As you can see gfortran-4.2.3 could find libgfortran.dylib at:
> /usr/local/lib/gcc/i686-apple-darwin8/4.2.3/../../../x86_64/libgfortran.dylib 
> while gfortran-4.2.4 could not find libgfortran.dylib.
> 
> Thus maybe I did make a mistake when installing gfortran-4.2.4. Here is what I did:
> $ gunzip gfortran-4.2-5564-darwin9.tar.gz
> $ sudo tar -xvf gfortran-4.2-5564-darwin9.tar -C /
> $ sudo ln -s /usr/bin/gfortran-4.2 /usr/bin/gfortran
> 
> Do you know what I need to do so that libgfortran.dylib can be found?
> 
> P.S.:Since many Mac users are no Unix experts please allow me to suggest to place on your website the commands to install/uninstall gfortran. I have found the following website, which told me how to install gfortran and how I could uninstall it:
> http://www.webmo.net/support/fortran_osx.html
> 
> Thank you in advance.
> Best regards
> Christian
> 
> 
> 
> Simon Urbanek wrote:
>> 
>> On Jan 21, 2010, at 15:56 , cstrato wrote:
>> 
>>> Dear Simon,
>>> 
>>> One more question:
>>> I have just unzipped gfortran-4.2-5564-darwin9.tar.gz. The version gives:
>>> Using built-in specs.
>>> Target: i686-apple-darwin9
>>> Configured with: /Builds/gcc/gcc_42-5564/build/obj/src/configure --disable-checking --enable-werror --prefix=/usr --mandir=/usr/share/man --enable-languages=c,objc,c++,obj-c++,fortran --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-gxx-include-dir=/usr/include/c++/4.0.0 --with-slibdir=/usr/lib --build=i686-apple-darwin9 --host=i686-apple-darwin9 --target=i686-apple-darwin9
>>> Thread model: posix
>>> gcc version 4.2.1 (Apple Inc. build 5564)
>>> 
>>> This means that this version seems to be older than the one I am using now?
>>> 
>> 
>> No, that is GNU Fortran 4.2.4 that I was referring to. The "gcc version 4.2.1" comes from Apple's Xcode 3.1 gcc-4.2 branch since that is what they define - it just adds Fortran support to the existing gcc 4.2.1 branch of Apple that you installed as Xcode. However, the Fortran part is merged from the GNU Fortran 4.2.4 release - hence I refer to it as 4.2.4.
>> 
>> Cheers,
>> Simon
>> 
>> 
>>> 
>>> Simon Urbanek wrote:
>>>> 
>>>> On Jan 21, 2010, at 14:47 , cstrato wrote:
>>>> 
>>>>> Dear all,
>>>>> 
>>>>> I have the following problem:
>>>>> My Bioconductor package xps requires both R and ROOT, whereby I compile ROOT usually from source. Until now this has not been a problem since I do all my development on Tiger. However, now I wanted to compile ROOT on Leopard but failed since my gfortran compiler is too old, see:
>>>>> http://root.cern.ch/phpBB2/viewtopic.php?t=9721&sid=003b01ddb64f33dbe0c74651ee089c34 
>>>>> 
>>>>> To solve the problem I should upgrade to the latest version coming with gcc-4.4 in Fink.
>>>> 
>>>> I would advise against that - using gcc from Fink usually calls for a disaster. The real solution is to fix their flags, but that's another story ...
>>>> 
>>>> 
>>>>> Thus my question is:
>>>>> Can I also use this version for R or do I need to use the version downloaded from att?
>>>>> 
>>>> 
>>>> I would recommend using the Leopard gfortran 4.2.4 for Xcode 3.1.x from the Mac devel page
>>>> http://r.research.att.com/tools/
>>>> which I assume is what you meant by the latter.
>>>> 
>>>> Cheers,
>>>> Simon
>>>> 
>>>> 
>>> 
>>> 
>> 
>> 
> 
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