From: Aaron Samuel <aaron.psamuel@...>
Date: 2011-12-02T22:00:41+09:00
Subject: Re: yaml.h is missing / Failed to configure psych.

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On Dec 1, 2011 7:58 PM, "Fearless Fool" <r@alum.mit.edu> wrote:
>
> I'm doing a fresh sandboxed install of Ruby 'n Rails 'n such.  The
> install is evidently having trouble finding yaml.h (or libyaml) and
> building psych.  I'm running OSX 10.6.8 ("Snow Leopard")
>
> Synopsis:
> ======
>
> $ # SETTING UP THE ENVIRONMENT
> $ SANDBOX=/Users/me/Developer/Sandbox
> $ PATH=${SANDBOX}/usr/bin:${PATH}
>
> $ # INSTALL A MODERN READLINE
> $ cd ../readline-6.2
> $ ./configure --prefix=$SANDBOX/usr
> <snip...>
> $ make install
> <snip...>
> $ make clean
>
> $ # INSTALL YAML 0.1.4
> $ cd ../yaml-0.1.4
> $ ./configure --prefix=$SANDBOX/usr
> <snip...>
> $ make install
> <snip...>
> $ make clean
>
> $ # INSTALL RUBY
> $ cd ../ruby-1.9.3-p0
> $ ./configure --prefix=$SANDBOX/usr
> <snip...>
> $ make install
> <snip...>
> configuring psych
> yaml.h is missing. Please install libyaml.
> Failed to configure psych. It will not be installed.
> <snip...>
> $ make clean
>
> $ # TRY TO USE GEM
> $ gem update --system
> $SANDBOX/usr/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>':
> It seems your ruby installation is missing psych (for YAML output).
> To eliminate this warning, please install libyaml and reinstall your
> ruby.
>
> ===============
> Note that YAML did create and install libraries in the sandboxed
> directory:
>
> $ ls $SANDBOX/usr/lib
> libhistory.6.2.dylib  libreadline.6.2.dylib  libruby-static.a
> libyaml.la    ruby
> libhistory.6.dylib  libreadline.6.dylib  libyaml-0.2.dylib  perl5
> libhistory.a    libreadline.a    libyaml.a    pkgconfig
> libhistory.dylib  libreadline.dylib  libyaml.dylib    python2.6
>
> ... but it appears that they weren't found.  I did note the following
> message during the the YAML make process:
> ----------------------------------------------------------------------
> Libraries have been installed in:
>   /Users/r/Developer/Topaz/usr/lib
>
> If you ever happen to want to link against installed libraries
> in a given directory, LIBDIR, you must either use libtool, and
> specify the full pathname of the library, or use the `-LLIBDIR'
> flag during linking and do at least one of the following:
>   - add LIBDIR to the `DYLD_LIBRARY_PATH' environment variable
>     during execution
>
> See any operating system documentation about shared libraries for
> more information, such as the ld(1) and ld.so(8) manual pages.
> ----------------------------------------------------------------------
> ... but IIRC you don't want to mess with DYLD_LIBRARY_PATH on the Mac.
>
> Any ideas?

In Unix or Linux the case may be needing to update ldconfig to tell the
system where the new place to search for libs is at. I am not familiar with
Macs but that may be your issue. Check into how to run ldconfig on osX.
>
> - ff
>
> --
> Posted via http://www.ruby-forum.com/.
>

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