[ardour-dev] POSIX detection bug?

[patrick]

when i run configure for gnome-pim-1.4.6, it says
 
checking for pthread_create in -lpthread... yes
 
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but ardour's configure says
 
checking for pthread_create in -lpthread... no
configure: error: you have no POSIX thread support
configure: error: /bin/sh './configure' failed for pbd
configure: error: /bin/sh './configure' failed for libs
 
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here's some output from ldconfig.
 
# ldconfig -v |grep pthread
libpthread.so.0 -> libpthread-0.9.so
libgnomevfs-pthread.so -> libgnomevfs-pthread.so
 
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i've been trying to fix this POSIX support problem for several weeks now
but can't get past this point.  i don't understand why ardour thinks i
don't have POSIX support, and i really don't understand why gnome-pim
and ardour disagree about it.  could this be a bug?  and/or does anyone
have an idea  how to fix it?  tia for any help. 
patrick
 
 
ardour-0.9beta19
kernel 2.6.8
debian distro
gcc 2.95.4
autoconf (GNU Autoconf) 2.5
automake (GNU automake) 1.5
ltmain.sh (GNU libtool) 1.5.8