HELP!! gem install pg failed on opensuse 10.3 about ruby-pg HOT 7 CLOSED

Original comment by jdavis (Bitbucket: jdavis, GitHub: jdavis).

On debian and ubuntu, it looks like libpq-fe.h is provided by the package "libpq-dev". Can you try installing that package (or equivalent on your distribution)?

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Original comment by Michael Granger (Bitbucket: ged, GitHub: ged).

Jeff, it looks like he has Postgres installed in his home directory, and the mkmkf.log confirms that the include dir from the installation is being included in the CPPFLAGS.

@syliang, would you mind testing something out for me? Create a file called test.c or something and paste this into it:

#!c
#include <libpq-fe.h>

Then run this command:

gcc -E -I. -I/export/home/invantest/tools/ruby/1.8.7/lib/ruby/1.8/i686-linux -I. \
  -D_FILE_OFFSET_BITS=64  -I/export/home/invantest/tools/pgsql/8.3.3/include \
  -g -O2    test.c -o test.i

and either reply with the output, or attach it if you prefer. Thanks!

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Original comment by syliang (Bitbucket: syliang, GitHub: syliang).

Hi Michael,

The command run ok and the test.i is attached for your reference.

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Original comment by syliang (Bitbucket: syliang, GitHub: syliang).

Hi Guy,

I know what is the error already. I done a stupid mistake that I didn't notice the machine did not install with GCC. After I install the GCC, pg gem install successful. The error seem to be not reflect the real error but anyway it works. Thanks and sorry guys for wasting your time.

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Original comment by Michael Granger (Bitbucket: ged, GitHub: ged).

No problem, I'm glad we got it figured out!

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Original comment by deepak_shinde (Bitbucket: deepak_shinde, ).

sudo apt-get install devpq-dev

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Original comment by Fernando Basso (Bitbucket: fernando_basso, ).

I am having the same problem in arch linux. PostgreSQL 9.5, pg 0.18.4. Trying to require it gives the “incompatible library version blah/blah/pg_ext.so” message.

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