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problem with swig & ruby

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  problem with swig & ruby serialhex <serialhex@gmail.com> - 2011-04-13 00:42 -0500
    Re: problem with swig & ruby serialhex <serialhex@gmail.com> - 2011-04-13 13:19 -0500
      Re: problem with swig & ruby Ralf Mueller <ralf.mueller@zmaw.de> - 2011-04-14 03:13 -0500
      Re: problem with swig & ruby Ralf Mueller <ralf.mueller@zmaw.de> - 2011-04-14 03:16 -0500

#2729 — problem with swig & ruby

[Note:  parts of this message were removed to make it a legal post.]

ok, so i'm working on a project that requires me to use swig to write some
ruby bindings.  unfortunately, when i try and run swig & i give it the
directory of ruby.h it gives me a "ruby/config.h not found" error.  i'm
using rvm so i can manage the different versions i'm going to be testing
against, but that shouldnt matter as when i compiled from source it have me
the same error.  i _can_ find config.h, it's in "i686-linux/ruby" not "ruby"
(relative to ruby.h).  whats the deal with this?  i mean i can _easily_
symlink or copy config.h to the proper place, but i shouldnt have to do
this.  and before anyone asks i did configure with --enable-shared.  is this
a bug i need to talk to the head-honchos about??  i would like this resolved
so i dont have to worry about this when i install other versions of ruby
 (or asking people to do this for their version of ruby).  i mean, it kind
of looks bad if i ask someone to symlink something for me (and yes i could
do it for them in my config scripts, but the whole thing should be
unessisary!)

thanks in advance!
hex

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#2779

[Note:  parts of this message were removed to make it a legal post.]

no one has a good (or bad) answer to this?  :-/ crap!
hex

On Wed, Apr 13, 2011 at 1:42 AM, serialhex <serialhex@gmail.com> wrote:

> ok, so i'm working on a project that requires me to use swig to write some
> ruby bindings.  unfortunately, when i try and run swig & i give it the
> directory of ruby.h it gives me a "ruby/config.h not found" error.  i'm
> using rvm so i can manage the different versions i'm going to be testing
> against, but that shouldnt matter as when i compiled from source it have me
> the same error.  i _can_ find config.h, it's in "i686-linux/ruby" not
> "ruby"
> (relative to ruby.h).  whats the deal with this?  i mean i can _easily_
> symlink or copy config.h to the proper place, but i shouldnt have to do
> this.  and before anyone asks i did configure with --enable-shared.  is
> this
> a bug i need to talk to the head-honchos about??  i would like this
> resolved
> so i dont have to worry about this when i install other versions of ruby
>  (or asking people to do this for their version of ruby).  i mean, it kind
> of looks bad if i ask someone to symlink something for me (and yes i could
> do it for them in my config scripts, but the whole thing should be
> unessisary!)
>
> thanks in advance!
> hex
>

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#2830

37 min of waiting is not that long....get yourself a coffee as a pacifier
here is my hint:

to get the right value for CPPFLAGS, call this script:

require 'mkmf'
if RUBY_VERSION[0,3] == '1.8'
   puts "-I#{Config::expand(CONFIG['rubyhdrdir'])}"
else
   puts "-I#{Config::expand(CONFIG['rubyhdrdir'])} 
-I#{Config::expand(CONFIG['rubyhdrdir'])}/#{Config::expand(CONFIG['arch'])}"
end


On my system, its outpout is
-I/usr/include/ruby-1.9.1 -I/usr/include/ruby-1.9.1/x86_64-linux

Ruby uses two config.h files, one for platform independent and one for platform dependent settings.

hth
ralf

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#2831

BTW, there a SWIG mailing list: swig-user@lists.sourceforge.net

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