Can't install bigdecimal gem using urpmi or gem install

[joeyc]

Not quite an adv topic but couldn't find a category that fits in basic support so here I am.

Am trying to install the bigdecimal gem for ruby. I have been able to install the sinatra gem via

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gem install sinatra

but when I try to do that with big decimal, i.e.

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gem install bigdecimal

I get

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ERROR:  Error installing bigdecimal:
        ERROR: Failed to build gem native extension.

        /usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/ruby.h


When I try to install it via rpm via

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urpmi ruby-bigdecimal

I get

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No package named ruby-bigdecimal

Here are a list of my local gems
*** LOCAL GEMS ***

rack (1.4.1)
rack-protection (1.3.2)
sinatra (1.3.3)
sqlite3 (1.3.3)
tilt (1.3.3)

And my ruby versioning info
ruby 1.8.7 (2012-02-08 patchlevel 358) [i586-linux]

Thanks in advance! PLease let me know any further info you may need

[isadora]

.........................

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mkmf.rb can't find header files for ruby at /usr/lib/ruby/ruby.h


................

Guess, you are in need for ruby-devel?

[joeyc]

Hi there

I did a

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urpmi ruby-devel

(I think, or a gem install ruby-devel - sorry, I did something then had a big christmas lunch) .

So now I get a different error message which probably means progress, right?

fatal error: ruby/ruby.h: No such file or directory

Not sure what to do here. Stack overflow articles say to install ruby-dev but that seems to be superseded by ice-ruby-devel and ruby-devel, both of which I have installed.

By the way I am using ruby 1.8.7 i586.

Not to go off track (but I don't think its worth opening another thread) is Mageia 2 incompatible with Ruby 1.9.3?

Please help me go forward and merry christmas

[tom_]

urpmf is the tool which searches a file for you in all the packages,

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urpmf -l ruby.h

tells that you need to install ruby-devel

[doktor5000]

Best first do an

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rpm -qa | grep ruby | sort

to see what is installed currently. As i don't use ruby, not as packages nor as gems, i don't know how to list all installed gems.
Should probably be

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gem query --local

or as shortcut:

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gem q -L

[joeyc]

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urpmf -l ruby.h

This prints a lot of output. Is there something in particular I should try and search for rather than spam you with irrelevant stuff?

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rpm -qa | grep ruby | sort

ice-ruby-3.3.1-5.mga2
ice-ruby-devel-3.3.1-5.mga2
ruby-1.8.7.p358-1.1.mga2
ruby-devel-1.8.7.p358-1.1.mga2
ruby-RubyGems-1.7.2-3.mga2
ruby-sqlite3-1.3.3-2.mga1
ruby-sqlite3-debug-1.3.3-2.mga1
ruby-sqlite3-doc-1.3.3-2.mga1

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gem query --local

*** LOCAL GEMS ***

diff-lcs (1.1.3)
rack (1.4.1)
rack-protection (1.3.2)
rspec (2.12.0)
rspec-core (2.12.2)
rspec-expectations (2.12.1)
rspec-mocks (2.12.1)
sinatra (1.3.3)
sqlite3 (1.3.3)
tilt (1.3.3)
[/reply]

Also, can someone please confirm that ruby 1.9.3 is NOT supported in Mageia 2?

As always, thanks for your help!

[tom_]

it seems taht you already have the rigth package (ruby-devel) installed,
so the problem is in another place

a couple of note:

- you have ruby 1.8.7, are you sure the bigdecimal version you are compiling is correct for that ruby version?

- it seems that ruby 1.8.7 has bigdecimal in its standardlib, are you sure you haven't it available already?

http://ruby-doc.org/stdlib-1.8.7/libdoc/bigdecimal/rdoc/BigDecimal.html