From: Tom Cloyd <tomcloyd@...>
Date: 2008-07-19T08:17:02+09:00
Subject: Re: compile from source - how difficult?

Martin DeMello wrote:
> On Fri, Jul 18, 2008 at 3:34 PM, Tom Cloyd <tomcloyd@comcast.net> wrote:
>> On a fresh install of Kubuntu Linux (ver. 8.04.01), I'm not having good day
>> trying to get ruby and rubygems back and functional.
> 
> I got webby installed under Ubuntu 8.04 without having to compile
> anything from source. I did face some other issues, though - see
> http://markmail.org/message/apqjib2ftfr5dukk
> 
> Since your immediate problem appears to be pthreads-related, see if
> you have the following installed:
> 
> libpthread-stubs0
> libpthread-stubs0-dev
> 
> martin
> 
> 

Here's what's installed, apparently -

$ locate libpthread
/lib/libpthread-2.7.so
/lib/libpthread.so.0
/lib/tls/i686/cmov/libpthread-2.7.so
/lib/tls/i686/cmov/libpthread.so.0

So, I went to Adept and found the two things (packages? modules? I 
haven't a clue) an installed them.

Then...

$ sudo gem install webby
[sudo] password for tomc:
Building native extensions.  This could take a while...
ERROR:  Error installing webby:
         ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb install webby
checking for main() in -lpthread... no
*** 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
         --without-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=/usr/bin/ruby1.8
         --with-pthreadlib
         --without-pthreadlib


Gem files will remain installed in 
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.0 for inspection.
Results logged to 
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.0/ext/gem_make.out


This was what was happening before.

Checking the mkmf.log file mentioned above, I find:

have_library: checking for main() in -lpthread... -------------------- no

"cc -o conftest -I. -I/usr/lib/ruby/1.8/i486-linux -I. 
-fno-strict-aliasing -g -g -O2  -fPIC conftest.c  -L"." -L"/usr/lib" -L. 
-Wl,-Bsymbolic-functions -rdynamic -Wl,-export-dynamic 
-lruby1.8-static -lpthread  -lpthread -ldl -lcrypt -lm   -lc"
/usr/bin/ld: crt1.o: No such file: No such file or directory
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
/* end */

"cc -o conftest -I. -I/usr/lib/ruby/1.8/i486-linux -I. 
-fno-strict-aliasing -g -g -O2  -fPIC conftest.c  -L"." -L"/usr/lib" -L. 
-Wl,-Bsymbolic-functions -rdynamic -Wl,-export-dynamic 
-lruby1.8-static -lpthread  -lpthread -ldl -lcrypt -lm   -lc"
/usr/bin/ld: crt1.o: No such file: No such file or directory
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { main(); return 0; }
/* end */

--------------------

Then, checking 
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.0/ext/gem_make.out 
(mentioned in the webby install effort console output, above), I find 
simply a repetition of the error output printed to the console as a 
result of the webby install attempt.

Sadly, I cannot make sense of any of this, so I'm very open to 
suggestions at this point.

Thanks!

t.
-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd
Bellingham, Washington, U.S.A: (360) 920-1226
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~