Hi, I am new to Ruby on Rails. I am running rails on Mac OSX 10.5.7. I get an error when I run this command sudo gem install ruby-postgres The error is as follows --------------------------------- /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb checking for main() in -lpq... yes checking for libpq-fe.h... yes checking for libpq/libpq-fs.h... yes checking for PQsetClientEncoding()... yes checking for pg_encoding_to_char()... yes checking for PQfreemem()... yes checking for PQescapeString()... yes checking for PQexecParams()... yes creating Makefile make gcc -I. -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin9.0 -I. -DHAVE_LIBPQ_FE_H -DHAVE_LIBPQ_LIBPQ_FS_H -DHAVE_PQSETCLIENTENCODING -DHAVE_PG_ENCODING_TO_CHAR -DHAVE_PQFREEMEM -DHAVE_PQESCAPESTRING -DHAVE_PQEXECPARAMS -I/Library/PostgreSQL/8.3/include -fno-common -arch ppc -arch i386 -Os -pipe -fno-common -Wall -c postgres.c postgres.c:31: error: conflicting types for ‘pg_encoding_to_char’ /Library/PostgreSQL/8.3/include/libpq-fe.h:518: error: previous declaration of ‘pg_encoding_to_char’ was here postgres.c:31: error: conflicting types for ‘pg_encoding_to_char’ /Library/PostgreSQL/8.3/include/libpq-fe.h:518: error: previous declaration of ‘pg_encoding_to_char’ was here postgres.c: In function ‘pgconn_s_escape_bytea’: postgres.c:370: warning: pointer targets in passing argument 1 of ‘PQescapeBytea’ differ in signedness postgres.c: In function ‘pgconn_s_escape_bytea’: postgres.c:370: warning: pointer targets in passing argument 1 of ‘PQescapeBytea’ differ in signedness postgres.c: In function ‘pgconn_s_unescape_bytea’: postgres.c:401: warning: pointer targets in passing argument 1 of ‘PQunescapeBytea’ differ in signedness postgres.c: In function ‘pgconn_s_unescape_bytea’: postgres.c:401: warning: pointer targets in passing argument 1 of ‘PQunescapeBytea’ differ in signedness lipo: can''t open input file: /var/tmp//ccGQscbS.out (No such file or directory) make: *** [postgres.o] Error 1 Any help is really appreciated. Thanks a lot Jai -- Posted via http://www.ruby-forum.com/.