From: Jeremy Henty <onepoint@...>
Date: 2007-07-31T01:10:06+09:00
Subject: BUG(?): 1.8.6-p36 broke compiling C++ extensions


Upgrading 1.8.6 to 1.8.6-p36 has stopped C++ extensions from
compiling.  If I create a file foo.cc containing:

    #include <ruby.h>

and compile it with:

    $ g++ -I/usr/lib/ruby/1.8/i686-linux -c foo.cc 

then it works with version 1.8.6 , but fails with version 1.8.6-p36 :

    In file included from /usr/lib/ruby/1.8/i686-linux/ruby.h:719,
		     from foo.cc:1:
    /usr/lib/ruby/1.8/i686-linux/intern.h:207: error: use of enum `rb_thread_status' without previous declaration
    /usr/lib/ruby/1.8/i686-linux/intern.h:207: error: invalid type in declaration before ';' token

Toy C extensions compile just fine.  Wrapping the '#include <ruby.h>'
in "extern "C" { ... }" makes no difference.  I'm going bonkers trying
to figure this out.  Any ideas?  I want to resume work on Ruby/FLTK
but I'm stuck until this is fixed, so I'd really appreciate some help.

Details: GNU/Linux, kernel 2.6.21 , gcc 3.4.3 , ruby configuration :

    ./configure \
	    --prefix=/usr \
	    --enable-shared \
	    --enable-pthread \
	    --enable-install-doc

Thanks in advance, 

Jeremy Henty