[R-SIG-Mac] gfortran and gcc 4.2

[Kasper Daniel Hansen]

Thanks a lot, that was very helpful.

On a side note I am surprised to see that R-devel's configure script  
picks up
   /usr/local/bin/gfortran-4.2
instead of
   /usr/bin/gfortran-4.2
even though /usr/bin is ahead of /usr/local/bin in my path. Is that an  
autoconf setting, that /usr/local/bin is always first, or is it an R  
thing or?

Here is my path
kasper-hansens-macbook:~/Source/R-devel/> echo $PATH
/Users/khansen/Bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/ 
texbin:/usr/X11/bin

and here is a relevant snippet from config.log
PATH: /usr/X11/bin
PATH: /usr/local/bin
PATH: /Users/khansen/Bin
PATH: /usr/bin
PATH: /bin
PATH: /usr/sbin
PATH: /sbin
PATH: /usr/local/bin
PATH: /usr/texbin
PATH: /usr/X11/bin
PATH: /usr/local/bin

It seems like /usr/X11/bin and /usr/local/bin is prepended to the PATH  
setting/

Kasper

On Aug 29, 2008, at 8:53 AM, Simon Urbanek wrote:

>
> On Aug 28, 2008, at 23:59 , Kasper Daniel Hansen wrote:
>
>> I want to get a suitable gfortran for Xcode 3.1 under Leopard in  
>> order to build x86_64
>>
>> Despite reading the "tools" and "building" pages on  
>> r.research.att.com I am still confused. The comment on GCC 4.2 on  
>> the "building" page seems to indicate that I should look under the  
>> "Alternative" section on "tools".
>>
>> Here I see gfortran-42.pkg which has a build of 5531. But my  
>> version(s) of GCC are
>>
>> kasper-hansens-macbook:~/Work/packages/> gcc --version
>> i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5484)
>> Copyright (C) 2005 Free Software Foundation, Inc.
>> This is free software; see the source for copying conditions.   
>> There is NO
>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR  
>> PURPOSE.
>>
>> kasper-hansens-macbook:~/Work/packages/> gcc-4.2 --version
>> i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5564)
>> Copyright (C) 2007 Free Software Foundation, Inc.
>> This is free software; see the source for copying conditions.   
>> There is NO
>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR  
>> PURPOSE.
>>
>> and at the top of the page I see gfortran-4.2.3.pkg which seems to  
>> be a later version (but has no build information).
>>
>> So which one should I use?
>>
>
> gfortran-42.pkg complements Apple's gcc-4.2 compiler so if you have  
> Apple's gcc-4.2 then that is the way to go.
>
> I don't see "gfortran-4.2.3.pkg" on the page, but there is  
> "gfortran-4.2.3.dmg" which is a pure GNU Fortran (thus it doesn't  
> have any Apple build number) living in /usr/local, independent of  
> the Apple compilers. That is what we supply with R since we cannot  
> rely on gcc-4.2 (until recently it was not available to the public).  
> Also it lives in /usr/local to be fully independent.
>
> As for the build numbers - Apple is very slow in releasing sources  
> for their binaries, so the current build is usually not available.  
> (Apparently they have put 5564 up just a few days ago, so I'll build  
> the updated version soon, but if you're using just the gfortran part  
> there will be likely no changes sine the Fortran sources come from  
> FSF).
>
> Cheers,
> Simon
>
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