[Rd] Problem compiling R 3.6.1 on POWER 570 system

[Prof Brian Ripley]

On Wed, 19 Dec 2007, Mark Komarinski wrote:

> I've for a RHEL 4 box on a P570 system.  My end user wants to have a
> 64-bit version of R compiled due to the large amount of memory they
> require (this image has 16GB allocated to it).
>
> I can compile R fine in 32-bit mode, but it can't use more than 2.4GB of
> RAM before it falls over and dies.
>
> Compiling in 64-bit mode for POWER systems "should" be as easy as adding
> a CFLAGS="-m64" FFLAGS="-m64" ./configure --without-x .

The R-admin manual says to use

CC="gcc -m64"
CXX="gxx -m64"
F77="gfortran -m64"
FC="gfortran -m64"

in several places: can you try following that (with g77 on your old OS, 
and presumably not FC if you don't have an F90 compiler).

> It's not, and unfortunately I'm at a loss to what the problem is.
> Here's the last few lines of the above configure command:
>
> checking for Fortran 77 libraries of g77...  -L/usr/local/lib64
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6/64
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6/../../../../lib64
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6/../../.. -L/lib/../lib64
> -L/usr/lib/../lib64 -lfrtbegin -lg2c -lm -lgcc_s_64
> checking how to get verbose linking output from gcc -std=gnu99... -v
> checking for C libraries of gcc -std=gnu99...  -L/usr/local/lib64
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6/64
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6/../../../../lib64
> -L/usr/lib/gcc/ppc64-redhat-linux/3.4.6/../../.. -L/lib/../lib64
> -L/usr/lib/../lib64 -lgcc_s_64
> checking for dummy main to link with Fortran 77 libraries... none
> checking for Fortran 77 name-mangling scheme... lower case, underscore,
> extra underscore
> checking whether g77 appends underscores to external names... yes
> checking whether g77 appends extra underscores to external names... yes
> checking whether mixed C/Fortran code can be run... configure: WARNING:
> cannot run mixed C/Fortran code
> configure: error: Maybe check LDFLAGS for paths to Fortran libraries?
>
> Here's what looks to be the relevant part from config.log:
> configure:32383: checking whether mixed C/Fortran code can be run
> /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/ppc64-redhat-linux/3.4.6/libgcc_s_64.so when searching for
> -lgcc_s_64
> /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/ppc64-redhat-linux/3.4.6/libgcc_s_64.so when searching for
> -lgcc_s_64
> /usr/bin/ld: cannot find -lgcc_s_64
> collect2: ld returned 1 exit status
> configure:32447: WARNING: cannot run mixed C/Fortran code
> configure:32449: error: Maybe check LDFLAGS for paths to Fortran libraries?
>
> This implies that configure is compiling the code in 32 bit mode (which
> is why it's skipping libgcc_s_64.o
>
> I guess my questions are: has anyone compiled this for this system?  And
> if so, how did you do it?
>
> -Mark
>
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595