JAVA_CPPFLAGS == ~autodetect~

This is happening to me with R 2.9 and 2.8 on jaunty.

whit at spartan:~$ R CMD config JAVA_CPPFLAGS
~autodetect~
whit at spartan:~$


I can see the "~autodetect~" strings here:
https://svn.r-project.org/R/trunk/m4/java.m4

but JAVA_LIBS ends up being the correct value in my installation:

whit at spartan:~/dvl/R.packages$ R CMD config JAVA_LIBS
-L/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server
-L/usr/lib/jvm/java-6-openjdk/jre/lib/amd64
-L/usr/lib/jvm/java-6-openjdk/jre/../lib/amd64 -L/usr/local/lib64
-L/usr/java/packages/lib/amd64 -L/usr/lib64 -L/lib64 -L/lib -L/usr/lib
-ljvm
whit at spartan:~/dvl/R.packages$ R CMD config JAVA_CPPFLAGS
~autodetect~
whit at spartan:~/dvl/R.packages$

-Whit