mac OS X 10.5.7 rgdal installation problems

sudo R CMD install --configure-args='--with-proj-include=/sw/bin/proj'
rgdal_0.6-9.tar.gz
* Installing to library ?/Library/Frameworks/R.framework/Resources/ 
library?
* Installing *source* package ?rgdal? ...
gdal-config: gdal-config
checking for gcc... gcc -arch i386 -std=gnu99
checking for C compiler default output file name... configure: error:
C compiler cannot create executables
See `config.log' for more details.
ERROR: configuration failed for package ?rgdal?
* Removing ?/Library/Frameworks/R.framework/Resources/library/rgdal?

there is a C compiler problem?  I have XCode  3.1.2.

Stephen Sefick

On Thu, Jul 2, 2009 at 10:05 AM, stephen sefick<ssefick at gmail.com>  
wrote:

platform       i386-apple-darwin8.11.1
arch           i386
os             darwin8.11.1
system         i386, darwin8.11.1
status
major          2
minor          9.1
year           2009
month          06
day            26
svn rev        48839
language       R
version.string R version 2.9.1 (2009-06-26)

gdal-config, proj, and ogr are in my path.  I type them at the shell
prompt and they work.  They were installed using fink so they are in
the /sw/bin directory.  The installation did not work without
configuration flags and gave me the same error message that is at the
end of the transcript, so I decided to tell R CMD install where proj
was.  Below is the transcript of my session:

sudo R CMD install --configure-args='--with-proj=/sw/bin/proj'
rgdal_0.6-9.tar.gz
Password:
* Installing to library ?/Library/Frameworks/R.framework/Resources/ 
library?
* Installing *source* package ?rgdal? ...
gdal-config: gdal-config
checking for gcc... gcc -arch i386 -std=gnu99
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc -arch i386 -std=gnu99 accepts -g... yes
checking for gcc -arch i386 -std=gnu99 option to accept ANSI C...  
none needed
checking how to run the C preprocessor... gcc -arch i386 -std=gnu99  
-E
checking for egrep... grep -E
checking for ANSI C header files... rm: conftest.dSYM: is a directory
rm: conftest.dSYM: is a directory
yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking proj_api.h usability... no
checking proj_api.h presence... no
checking for proj_api.h... no
Error: proj_api.h not found.
If the PROJ.4 library is installed in a non-standard location,
use --configure-args='--with-proj-include=/opt/local/include'
for example, replacing /opt/local/* with appropriate values
for your installation. If PROJ.4 is not installed, install it.
ERROR: configuration failed for package ?rgdal?
* Removing ?/Library/Frameworks/R.framework/Resources/library/rgdal?

any help would be greatly appreciated.

-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis