Description:
------------
On Linux we have following picture, when trying to compile PHP-4.3.7 with FreeTDS ...:
=======================================================
gcc  -Iext/mssql/ -I/usr/src/php-4.3.7/ext/mssql/ -DPHP_ATOM_INC -I/usr/src/php-4.3.7/include -I/usr/src/php-4.3.7/main -I/usr/src/php-4.3.7 -I/usr/src/php-4.3.7/Zend -I/usr/local/include -I/usr/src/php-4.3.7/ext/xml/expat  -I/usr/src/php-4.3.7/TSRM  -g -O2  -c /usr/src/php-4.3.7/ext/mssql/php_mssql.c -o ext/mssql/php_mssql.o  && echo > ext/mssql/php_mssql.lo
In file included from /usr/src/php-4.3.7/ext/mssql/php_mssql.c:33:
/usr/src/php-4.3.7/ext/mssql/php_mssql.h:41: warning: redefinition of `SHORT'
/usr/local/include/sybdb.h:103: warning: `SHORT' previously declared here
=======================================================

But, on FreeBSD this warning became an error:
=======================================================
gcc  -Iext/mssql/ -I/usr/local/src/apache-php/php-4.3.7/ext/mssql/ -DPHP_ATOM_INC -I/usr/local/src/apache-php/php-4.3.7/include -I/usr/local/src/apache-php/php-4.3.7/main -I/usr/local/src/apache-php/php-4.3.7 -I/usr/local/src/apache-php/php-4.3.7/Zend -I/usr/local/include -I/usr/local/src/apache-php/php-4.3.7/ext/xml/expat  -I/usr/local/src/apache-php/php-4.3.7/TSRM  -g -O2  -c /usr/local/src/apache-php/php-4.3.7/ext/mssql/php_mssql.c -o ext/mssql/php_mssql.o  && echo > ext/mssql/php_mssql.lo
In file included from /usr/local/src/apache-php/php-4.3.7/ext/mssql/php_mssql.c:33:
/usr/local/src/apache-php/php-4.3.7/ext/mssql/php_mssql.h:41: error: redefinition of `SHORT'
/usr/local/include/sybdb.h:117: error: `SHORT' previously declared here
*** Error code 1

Stop in /usr/local/src/apache-php/php-4.3.7.
=======================================================

1 platform: Debian Linux, 2.4.20 kernel, GCC 2.95.4, FreeTDS 0.61.1
2 platform: FreeBSD 5.2.1-RELEASE-p8, GCC 3.3.3, FreeTDS 0.62.3

Reproduce code:
---------------
ext/mssql/php_mssql.h:
#if HAVE_FREETDS
#ifndef SHORT
typedef short SHORT;
#endif
#define SQLTEXT SYBTEXT
#define SQLCHAR SYBCHAR

/usr/local/include/sybdb.h:
typedef void *DBVOIDPTR;
typedef short SHORT;
typedef unsigned short USHORT;
typedef int (*INTFUNCPTR) (void *, ...);