In the past seven days, something has happened which causes configure to 
fail.

Configuration script:

./configure \
  --with-java \
  --with-mysql=/usr/local/mysql \
  --with-gd \
  --with-apxs=/usr/local/apache/bin/apxs \
  --with-xml \
  --with-zlib=/usr/local \
  --with-curl=/usr/local \
  --enable-versioning \
  --enable-track-vars \
  --enable-sysvshm \
  --enable-sysvsem \
  --enable-sockets \
  --disable-debug

Output:
/usr/local/src/php4
shanna% ./apxs-config 
loading cache ./config.cache
checking for a BSD compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking whether make sets ${MAKE}... yes
checking for working aclocal... found
checking for working autoconf... found
checking for working automake... found
checking for working autoheader... found
checking for working makeinfo... found
checking whether to enable maintainer-specific portions of Makefiles... no
checking host system type... Configuration name missing.
Usage: ./config.sub CPU-MFR-OPSYS
or     ./config.sub ALIAS
where ALIAS is a recognized configuration type.

Interestingly, removing --with-java from the configuration script makes 
it go away. This has only happened within the last week--I compiled my 
last PHP 4 module on Sept 29, with no problems. This problem manifested 
after a complete wipe of the source tree and a fresh checkout of the php4, 
Zend, and TSRM modules.