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?

On Feb 28, 9:16am, theLemcke [email protected] wrote:

MacOS X build: fixing architecture flags:
details. You may need configuration options.
–curdir
–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?

Mkmf.log file for reference:

find_executable: checking for pg_config… -------------------- yes


have_header: checking for libpq-fe.h… -------------------- yes

“/usr/bin/gcc-4.2 -E -I. -I/opt/local/lib/ruby/1.8/i686-darwin10 -I. -
I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -I/opt/local/
include -I/opt/local/include/postgresql84 -pipe -O2 -fno-common -pipe
-fno-common -arch i386 conftest.c -o conftest.i”
checked program was:
/* begin /
1: #include <libpq-fe.h>
/
end */


have_header: checking for libpq/libpq-fs.h… -------------------- yes

“/usr/bin/gcc-4.2 -E -I. -I/opt/local/lib/ruby/1.8/i686-darwin10 -I. -
I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -I/opt/local/
include -I/opt/local/include/postgresql84 -pipe -O2 -fno-common -pipe
-fno-common -arch i386 conftest.c -o conftest.i”
checked program was:
/* begin /
1: #include <libpq/libpq-fs.h>
/
end */


have_library: checking for PQconnectdb() in -lpq…
-------------------- no

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lpq -lpthread -ldl -lobjc "
conftest.c: In function t:
conftest.c:3: error: PQconnectdb undeclared (first use in this
function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))PQconnectdb;
return 0; }
/
end */

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lpq -lpthread -ldl -lobjc "
ld: warning: in /opt/local/lib/postgresql84/libpq.dylib, file was
built for unsupported file format which is not the architecture being
linked (i386)
Undefined symbols:
“_PQconnectdb”, referenced from:
_t in ccNZOcje.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { PQconnectdb(); return 0; }
/
end */

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lpq -lpthread -ldl -lobjc "
ld: warning: in /opt/local/lib/postgresql84/libpq.dylib, file was
built for unsupported file format which is not the architecture being
linked (i386)
Undefined symbols:
“_PQconnectdb”, referenced from:
_t in ccJOW4Il.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
checked program was:
/* begin /
1: int PQconnectdb();
2: /top/
3: /

4: * http://trac.macports.org/ticket/3604
5: * gcc 4.0 on 10.4 has a problem
6: /
7: int main() { return 0; }
8: int t() { PQconnectdb(); return 0; }
/
end */


have_library: checking for PQconnectdb() in -llibpq…
-------------------- no

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -llibpq -lpthread -ldl -lobjc
"
conftest.c: In function t:
conftest.c:3: error: PQconnectdb undeclared (first use in this
function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))PQconnectdb;
return 0; }
/
end */

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -llibpq -lpthread -ldl -lobjc
"
ld: library not found for -llibpq
collect2: ld returned 1 exit status
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { PQconnectdb(); return 0; }
/
end */

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -llibpq -lpthread -ldl -lobjc
"
ld: library not found for -llibpq
collect2: ld returned 1 exit status
checked program was:
/* begin /
1: int PQconnectdb();
2: /top/
3: /

4: * http://trac.macports.org/ticket/3604
5: * gcc 4.0 on 10.4 has a problem
6: /
7: int main() { return 0; }
8: int t() { PQconnectdb(); return 0; }
/
end */


have_library: checking for PQconnectdb() in -lms/libpq…
-------------------- no

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lms/libpq -lpthread -ldl -
lobjc "
conftest.c: In function t:
conftest.c:3: error: PQconnectdb undeclared (first use in this
function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))PQconnectdb;
return 0; }
/
end */

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lms/libpq -lpthread -ldl -
lobjc "
ld: library not found for -lms/libpq
collect2: ld returned 1 exit status
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { PQconnectdb(); return 0; }
/
end */

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lms/libpq -lpthread -ldl -
lobjc "
ld: library not found for -lms/libpq
collect2: ld returned 1 exit status
checked program was:
/* begin /
1: int PQconnectdb();
2: /top/
3: /

4: * http://trac.macports.org/ticket/3604
5: * gcc 4.0 on 10.4 has a problem
6: /
7: int main() { return 0; }
8: int t() { PQconnectdb(); return 0; }
/
end */

Try to use Homebrew:

http://mxcl.github.com/homebrew/
http://blog.clearto.me/2010/04/29/postgresql_on_snow_leopard_with_rails_using_homebrew.html

Enjoy!

Daniel G.

2011/2/28 theLemcke [email protected]

On Feb 28, 9:32am, Daniel G. [email protected]
wrote:

2011/2/28 theLemcke [email protected]

$ sudo env ARCHFLAGS="-arch i386" gem install pg -v=0.9.0
checking for PQconnectdb() in -lpq… no
–with-opt-include
–with-pg-config
–without-pqlib
–with-libpqlib
–without-libpqlib
–with-ms/libpqlib
–without-ms/libpqlib

Any suggestions or help?

Any other suggestions? I already have port installed and it’s
difficult to manage both at the same time.

I’m assuming you downloaded and and installed the PostgreSQL client?

I just installed the Gem a few weeks ago and had to add the bin dir to
my path (e.g. /Library/PostgreSQL/9.0/bin) right after I installed the
client. Try that if you haven’t.

I hope this helps!

Brian

Chris Lemcke wrote in post #984495:

I’m trying to install the “pg” gem on 32-bit snow leopard and I’m
encountering the following error:

The solution is to simply export the correct $PATH.

How did you install PostgreSQL?

Using Macports, when I perform a locate of “pg_config” it returns:
/opt/local/lib/postgresql90/bin/pg_config

therefore I have to:

export PATH=/opt/local/lib/postgresql90/bin:$PATH

then run the command “gem install pg” and it works

Your mileage may vary.

On Feb 28, 2011, at 9:30 AM, theLemcke wrote:

[…]
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
3: int t() { void ((volatile p)()); p = (void (()()))PQconnectdb;
built for unsupported file format which is not the architecture being
linked (i386)
Undefined symbols:
“_PQconnectdb”, referenced from:
_t in ccNZOcje.o
ld: symbol(s) not found

Your PostgreSQL client library is x86_64, not i386. The “file was built
for unsupported file format which is not the architecture being linked
(i386)” pretty much says it all.

I’d make sure pg_config is in your path, then try running it without the
ARCHFLAGS override.

Chris Lemcke wrote in post #984496:

have_library: checking for PQconnectdb() in -lpq…
-------------------- no

"/usr/bin/gcc-4.2 -o conftest -I. -I/opt/local/lib/ruby/1.8/i686-
darwin10 -I. -I/opt/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -
I/opt/local/include -I/opt/local/include/postgresql84 -pipe -O2 -fno-
common -pipe -fno-common -arch i386 conftest.c -L. -L/opt/local/lib
-L/opt/local/lib -L. -L/opt/local/lib -L/opt/local/lib/postgresql84 -
arch i386 -arch i386 -lruby-static -lpq -lpthread -ldl -lobjc "
conftest.c: In function t:
conftest.c:3: error: PQconnectdb undeclared (first use in this
function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))PQconnectdb;
return 0; }
/
end */

Strange, looks like this conftest forgot to #include the header or
declare PQconnectdb.

The later tests declare
int PQconnectdb();
but they are looking for different libraries, so fail later in the
linking stage.

Raise a ticket on macports?

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