Description:
------------
Missing declaration of CRTSCTS in ext/dio/dio.c which is 
used in line 565 in dio.c 
 
I added a declaration as long in line 426, works for me. 
 
btw, thanks for php! 
 

Reproduce code:
---------------
./configure --prefix=/a/path/php-4.3.4 --with-apxs=/a/path/apache/bin/apxs --with-mysql=/a/path/mysql --with-imap=/a/path/imap-2002e --with-ldap=/a/path --with-zlib=/a/path --with-gd=/a/path --with-pdflib=/a/path --with-tiff-dir=/a/path --with-jpeg-dir=/a/path --with-png-dir=/a/path --with-freetype-dir=/a/path --with-gettext=/a/path --with-xml=/a/path --with-xpm-dir=/a/path --with-dom=/a/path --with-iconv=/a/path --with-pear --enable-mime-magic --enable-mbstring --enable-dio --enable-ftp --enable-yp --enable-gd-native-ttf --enable-sysvsem --enable-tokenizer --enable-versioning --enable-track-vars

make

Expected result:
----------------
... 
... 
 
Build complete. 
;)