I've now been unable to compile PHP for about 10 days due 
to compilation errors (see bug 20063). That bug may now 
have been obscured by this one.

buildconf works fine (I installed bison 1.75). I'm using 
this configure (and have been for the last few months), 
which gives no complaints:

./configure --with-mysql=/usr/local --with-pdflib 
--enable-exif --with-bz2 --with-zlib --with-openssl 
--with-gettext --with-ldap --with-mhash --disable-overload 
--enable-sockets --with-vpopmail --with-mcrypt 
--enable-sysvshm --enable-pcntl 
--with-config-file-path=/var/www/conf/php43/ 
--enable-mbstring --with-pear=/usr/local/lib/php

I get this compile error on make:

gcc  -Iext/sockets/ -I/usr/local/src/php4/ext/sockets/ 
-DPHP_ATOM_INC -I/usr/local/src/php4/include 
-I/usr/local/src/php4/main -I/usr/local/src/php4 
-I/usr/local/src/php4/Zend -I/usr/local/include 
-I/usr/local/include/mysql 
-I/usr/local/src/php4/ext/xml/expat  
-I/usr/local/src/php4/TSRM  -g -O2  -c 
/usr/local/src/php4/ext/sockets/sockets.c -o 
ext/sockets/sockets.o  && echo > ext/sockets/sockets.lo
/usr/local/src/php4/ext/sockets/sockets.c:276: conflicting 
types for `php_read'
/usr/local/src/php4/ext/sockets/php_sockets.h:105: previous 
declaration of `php_read'
*** Error code 1

Stop in /usr/local/src/php4 (line 422 of Makefile).

Thanks for your attention