Extconf.rb won't build makefile

My mkmf.log says:


conftest.c: In function t': conftest.c:3: error:rb_define_alloc_func’ undeclared (first use in
this function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)


I am using ruby 1.8.6 on Linux.
Gnome is installed.
I run “ruby extconf.rb” as root, and get the above.

I guess this is a newbie question, but I’ve spent the last hour or two
searching google and various forums, and coming up empty. Any crumbs
of advice appreciated!

– Lindsay

Ooops, guess I should at least show the command line it ran:

“gcc -o conftest -I. -I/usr/lib/ruby/1.8/i686-linux -I.
-I/usr/kerberos/include -I/usr/lib/ruby/site_ruby/1.8/i686-linux -O2
-march=i686 -g -fPIC -Wall conftest.c -L’/usr/lib’ -Wl,-R’/usr/lib’ -g
-L/usr/kerberos/lib -rdynamic -Wl,-export-dynamic -lruby-static
-ldl -lcrypt -lm -lc”
conftest.c: In function t': conftest.c:3: error:rb_define_alloc_func’ undeclared (first use in
this function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)

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