From: theLemcke <sixtimesnine@...>
Date: 2011-03-01T02:20:30+09:00
Subject: Trying to install pg on 32bit Snow Leopard 10.6

I'm trying to install the "pg" gem on 32-bit snow leopard and I'm
encountering the following error:

$ sudo env ARCHFLAGS="-arch i386" gem install pg -v=0.9.0
Building native extensions.  This could take a while...
ERROR:  Error installing pg:
	ERROR: Failed to build gem native extension.

/opt/local/bin/ruby extconf.rb
checking for pg_config... yes
MacOS X build: fixing architecture flags:
  using the value in ARCHFLAGS environment variable ("-arch i386").
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
	--with-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/opt/local/bin/ruby
	--with-pg
	--without-pg
	--with-pg-config
	--without-pg-config
	--with-pg-dir
	--without-pg-dir
	--with-pg-include
	--without-pg-include=${pg-dir}/include
	--with-pg-lib
	--without-pg-lib=${pg-dir}/lib
	--enable-static-build
	--disable-static-build
	--with-pqlib
	--without-pqlib
	--with-libpqlib
	--without-libpqlib
	--with-ms/libpqlib
	--without-ms/libpqlib

Any suggestions or help?