To get this to compile on top of qemu-kvm, I needed the following patch to force CONFIG_THREAD on so as to define things like qemu_mutex_lock:
Index: qemu-kvm-tpm/configure
===================================================================
--- qemu-kvm-tpm.orig/configure 2011-05-09 21:19:10.920002303 -0500
+++ qemu-kvm-tpm/configure 2011-05-09 21:19:22.150002305 -0500
@@ -3420,6 +3420,7 @@
exit 1
fi
echo "CONFIG_TPM=y" >> $config_host_mak
+ echo "CONFIG_THREAD=y" >> $config_host_mak
fi
fi
