I am getting the following error when trying to install 'pg' Any thoughts? I am pretty new to rails so I am not sure how to fix this issue.
Davids-MacBook-Air:~ DavidStevenson$ install pg usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode] [-o owner] file1 file2 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode] [-o owner] file1 ... fileN directory install -d [-v] [-g group] [-m mode] [-o owner] directory ... Davids-MacBook-Air:~ DavidStevenson$ gem install pg Building native extensions. This could take a while... ERROR: Error installing pg: ERROR: Failed to build gem native extension. /usr/local/rvm/rubies/ruby-1.9.3-p392/bin/ruby extconf.rb make compiling gvl_wrappers.c compiling pg.c pg.c: In function ‘Init_pg_ext’: pg.c:384: error: ‘PQPING_OK’ undeclared (first use in this function) pg.c:384: error: (Each undeclared identifier is reported only once pg.c:384: error: for each function it appears in.) pg.c:386: error: ‘PQPING_REJECT’ undeclared (first use in this function) pg.c:388: error: ‘PQPING_NO_RESPONSE’ undeclared (first use in this function) pg.c:390: error: ‘PQPING_NO_ATTEMPT’ undeclared (first use in this function) make: *** [pg.o] Error 1 Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p392/gems/pg-0.15.1 for inspection. Results logged to /usr/local/rvm/gems/ruby-1.9.3-p392/gems/pg-0.15.1/ext/gem_make.out 
