[R-SIG-Mac] error trying to exec 'f951': execvp: No such file or directory

[John Maindonald]

In trying to install the randomForest package from source under r-devel (2013-10-20 r64082)
I get
<<<<
[R.app GUI 1.62 (6580) x86_64-apple-darwin10.8.0]

[Workspace restored from /Users/johnm1/r/.RData]
[History restored from /Users/johnm1/r/.Rhistory]

trying URL 'http://cran.r-project.org/src/contrib/randomForest_4.6-7.tar.gz'
Content type 'application/x-gzip' length 77163 bytes (75 Kb)
opened URL
==================================================
downloaded 75 Kb

* installing *source* package ‘randomForest’ ...
** package ‘randomForest’ successfully unpacked and MD5 sums checked
** libs
llvm-gcc-4.2 -arch x86_64 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I/usr/local/include    -fPIC  -mtune=core2 -g -O2  -c classTree.c -o classTree.o
llvm-gcc-4.2 -arch x86_64 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I/usr/local/include    -fPIC  -mtune=core2 -g -O2  -c regTree.c -o regTree.o
llvm-gcc-4.2 -arch x86_64 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I/usr/local/include    -fPIC  -mtune=core2 -g -O2  -c regrf.c -o regrf.o
llvm-gcc-4.2 -arch x86_64 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I/usr/local/include    -fPIC  -mtune=core2 -g -O2  -c rf.c -o rf.o
gfortran-4.2 -arch x86_64   -fPIC  -g -O2  -c rfsub.f -o rfsub.o
i686-apple-darwin9-gfortran-4.2.1: error trying to exec 'f951': execvp: No such file or directory
make: *** [rfsub.o] Error 1
ERROR: compilation failed for package ‘randomForest’
* removing ‘/Library/Frameworks/R.framework/Versions/3.1/Resources/library/randomForest’
>>>

I have Xcode 5.0 and the CLI installed.

Any advice on what do I need to do to make f951 available?

Also, installing r-devel has the result that after switching back to R-3.0.2 patched, 
it crashes upon starting.  The issue seems to be with the GUI, as there seems to
be no problem from the command line.  I will forward details if that seems useful.

John Maindonald             email: john.maindonald at anu.edu.au
phone : +61 2 (6125)3473    fax  : +61 2(6125)5549
Centre for Mathematics & Its Applications, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.