Solaris and 4.1.2

With the security update I've decided to update PHP to 4.1.2. In compiling I have had the following error: In file included from internal_functions.c:32: /install/php-4.1.2/ext/odbc/php_odbc.h:187: WINDOWS.H: No such file or directory /install/php-4.1.2/ext/odbc/php_odbc.h:188: sql.h: No such file or directory /install/php-4.1.2/ext/odbc/php_odbc.h:189: sqlext.h: No such file or directory make[2]: *** [internal_functions.lo] Error 1 make[2]: Leaving directory /install/php-4.1.2/main' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/install/php-4.1.2/main' make: *** [all-recursive] Error 1 Does anyone have any clue what causes it? Here's the config I'm using (obviously path/to/Solid is replaced when I run it) ./configure --with-solid=/path/to/Solid --enable-debug=no --without-mysql --without-gd --enable-track-vars Cheers Max