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From: Eric Wong <normalperson@yhbt.net>
Newsgroups: gmane.comp.lang.ruby.raindrops.general
Subject: Re: Rainbow gem install on solaris failed
Date: Thu, 19 Jan 2012 19:37:40 +0000
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Anjana Sarkar <anjanadeb@gmail.com> wrote:
> *I do have gcc 4+ installed , how do I tell mkmf to use that?*
> *mkmf.log shows it is using /opt/SUNWspro12/bin/cc*

First, don't send HTML to technical mailing lists.

You can probably override the CC env when running make after running
"ruby extconf.rb" manually.   Not sure how to do that easily via
"gem install"...

There might be a more generic way to specify an alternative
compiler when installing gems.

On the other hand, it might be easier to just install libatomic_ops
(or rebuild Ruby using gcc)

If you really want to get nasty, you can also edit the rbconfig.rb
file in your ruby installation so it points to GCC...  Totally hacky,
though...

> *$gcc -v
> Using built-in specs.
> Target: sparc-sun-solaris2.10
> Configured with: ../gcc-4.3.5/configure --prefix=/opt/swt/install/gcc-4.3.5
> --with-gmp-lib=/opt/swt/lib --with-gmp-include=/opt/swt/include
> Thread model: posix
> gcc version 4.3.5 (GCC)
> *
> * *
> *$ uname -a
> SunOS sundev1 5.10 142900-02 sun4v sparc SUNW,T5240

Anyways I can't provide support for non-Free systems.  Maybe somebody
else on the list has more knowledge in these areas.