-- Snip from make output --
pto -lssl -lcrypt  -o sapi/cli/php
ext/gd/gdcache.lo: In function `gdCacheCreate':
ext/gd/gdcache.lo(.text+0x26): undefined reference to `pemalloc'
ext/gd/gdcache.lo: In function `gdCacheDelete':
ext/gd/gdcache.lo(.text+0x87): undefined reference to `pefree'
ext/gd/gdcache.lo(.text+0x99): undefined reference to `pefree'
ext/gd/gdcache.lo: In function `gdCacheGet':
ext/gd/gdcache.lo(.text+0x150): undefined reference to `pemalloc'
*** Error code 1

Stop in /home/matt/src/php4.

------ Config -----
'./configure' \
'--disable-all' \
'--enable-posix' \
'--enable-session' \
'--enable-xml' \
'--enable-inline-optimization' \
'--with-apxs2=/chroot/sbin/apxs' \
'--with-config-file-path=/etc' \
'--enable-versioning' \
'--with-regex=system' \
'--enable-track-vars' \
'--with-zlib' \
'--with-gd=/usr/local' \
'--enable-gd-native-ttf' \
'--with-pgsql=/usr/local' \
'--with-openssl=/usr' \
'--with-xml=/usr/local' \
'--with-expat-dir=/usr/local' \
'--enable-trans-sid' \
'--with-jpeg-dir=/usr/local' \
'--with-png-dir=/usr/local' \
'--with-freetype-dir=/usr/local' \
'--prefix=/chroot/www' \
'--with-pcre-regex' \
'--disable-tokenizer' \
'--disable-ctype' \
'--disable-mbstring' \
'--disable-mbregex' \
'--enable-cli' \
'--without-mysql' \
'--without-mm' \
'--with-msession=/usr/local/'

I am using gd-2.0.1_3.  I had no problems with a build from around a week ago.  Could this be caused by the recent patch to ext/gd/gdcache.c (1.6)? 

--Matt