Error installing RMySQL on OS X

rmysql_install_error.R

R version 2.15.2 (2012-10-26) -- "Trick or Treat"
Copyright (C) 2012 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i386-apple-darwin9.8.0/i386 (32-bit)

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> install.packages('RMySQL')
trying URL 'http://cran.mirrors.hoobly.com/src/contrib/RMySQL_0.9-3.tar.gz'
Content type 'application/x-gzip' length 165363 bytes (161 Kb)
opened URL
==================================================
downloaded 161 Kb

* installing *source* package ‘RMySQL’ ...
** package ‘RMySQL’ successfully unpacked and MD5 sums checked
checking for gcc... gcc
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 accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking how to run the C preprocessor... gcc -E
checking for compress in -lz... yes
checking for getopt_long in -lc... yes
checking for mysql_init in -lmysqlclient... no
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 mysql.h usability... no
checking mysql.h presence... no
checking for mysql.h... no
checking for mysql_init in -lmysqlclient... no
checking for mysql_init in -lmysqlclient... no
checking for mysql_init in -lmysqlclient... no
checking for mysql_init in -lmysqlclient... no
checking for mysql_init in -lmysqlclient... yes
             mysqlclient found in -L/usr/local/mysql/lib/mysql
checking /usr/local/include/mysql/mysql.h usability... no
checking /usr/local/include/mysql/mysql.h presence... no
checking for /usr/local/include/mysql/mysql.h... no
checking /usr/include/mysql/mysql.h usability... no
checking /usr/include/mysql/mysql.h presence... no
checking for /usr/include/mysql/mysql.h... no
checking /usr/local/mysql/include/mysql/mysql.h usability... yes
checking /usr/local/mysql/include/mysql/mysql.h presence... yes
checking for /usr/local/mysql/include/mysql/mysql.h... yes
configure: creating ./config.status
config.status: creating src/Makevars
** libs
*** arch - i386
gcc -arch i386 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -I/Library/Frameworks/R.framework/Resources/include/i386 -DNDEBUG -I/usr/local/mysql/include/mysql -I/usr/local/include    -fPIC  -g -O2  -c RS-DBI.c -o RS-DBI.o
gcc -arch i386 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -I/Library/Frameworks/R.framework/Resources/include/i386 -DNDEBUG -I/usr/local/mysql/include/mysql -I/usr/local/include    -fPIC  -g -O2  -c RS-MySQL.c -o RS-MySQL.o
gcc -arch i386 -std=gnu99 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/lib -o RMySQL.so RS-DBI.o RS-MySQL.o -L/usr/local/mysql/lib/mysql -lmysqlclient -lz -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
ld: warning: ignoring file /usr/local/mysql/lib/mysql/libmysqlclient.dylib, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 6 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): /usr/local/mysql/lib/mysql/libmysqlclient.dylib
installing to /Library/Frameworks/R.framework/Versions/2.15/Resources/library/RMySQL/libs/i386
** R
** inst
** preparing package for lazy loading
Creating a generic function for ‘format’ from package ‘base’ in package ‘RMySQL’
Creating a generic function for ‘print’ from package ‘base’ in package ‘RMySQL’
** help
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded
Error : .onLoad failed in loadNamespace() for 'RMySQL', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/Library/Frameworks/R.framework/Versions/2.15/Resources/library/RMySQL/libs/i386/RMySQL.so':
  dlopen(/Library/Frameworks/R.framework/Versions/2.15/Resources/library/RMySQL/libs/i386/RMySQL.so, 6): Symbol not found: _mysql_affected_rows
  Referenced from: /Library/Frameworks/R.framework/Versions/2.15/Resources/library/RMySQL/libs/i386/RMySQL.so
  Expected in: flat namespace
 in /Library/Frameworks/R.framework/Versions/2.15/Resources/library/RMySQL/libs/i386/RMySQL.so
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/Library/Frameworks/R.framework/Versions/2.15/Resources/library/RMySQL’

The downloaded source packages are in
  ‘/private/var/folders/qv/bgblllv10qz63jb8mfh1f7cm0000gq/T/RtmpBhz1Ny/downloaded_packages’
Warning message:
In install.packages("RMySQL") :
  installation of package ‘RMySQL’ had non-zero exit status
>