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From: Eric Wong <normalperson@yhbt.net>
Newsgroups: gmane.comp.lang.ruby.kgio.general
Subject: Re: kgio 2.5.0 failed build/install
Date: Fri, 24 Jun 2011 20:50:46 +0000
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Mohit Chawla <mohit.chawla.binary@gmail.com> wrote:
> Hi,
> 
> Seeing this on CentOS 5.6:
> 
> ### build error
> 
> Building native extensions.  This could take a while...
> ERROR:  Error installing kgio:
>        ERROR: Failed to build gem native extension.
> 
>        /usr/bin/ruby extconf.rb
> checking for CLOCK_MONOTONIC in "time.h"... yes
> checking for clockid_t... yes
> checking for clock_gettime() in -lrt... no
> checking for t_open() in -lnsl... no
> checking for socket() in -lsocket... no
> checking for poll()... no
> checking for getaddrinfo()... no
> getaddrinfo required

Weird, clock_gettime() and poll() aren't detected, either.  Those
should always be present in a Linux system.

> "gcc -o conftest -I. -I/usr/lib64/ruby/1.8 -I.    -D_GNU_SOURCE
> -DPOSIX_C_SOURCE=1-D_POSIX_C_SOURCE=200112L -O2 -g -pipe -Wall
> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
> --param=ssp-buffer-size=4 -m64 -mtune=generic -fno-strict-aliasing
> -fPIC   conftest.c  -L/usr/lib64      -lruby-static  -lpthread -lrt
> -ldl -lcrypt -lm   -lc"

It could be a mixed 32/64-bit environment problem.  Can you verify
your gcc/Ruby are 64-bit?

> No such issues on my Ubuntu/Scientific Linux 6/CentOS 5.5 boxes. Any
> clues what could be the reason ?

The mixed 64-bit/32-bit toolchain is the only thing that comes to
mind.

I've always built my own Ruby packages (since long before RVM) on
CentOS/Debian machines.  Those distros enable pthreads by default on 1.8
(for tcl/tk compatibility) and that kills performance.  If RVM works for
you, then go for it, otherwise "./configure --prefix=$HOME/foo && make
&& make install" works great, too.

-- 
Eric Wong