php 54 extensions not loading due to missing symbols

[Dave Tyson <dtyson%anduin.org.uk@localhost>]

I've just upgraded a server (running current/amd64) to a very recent 
version of pkgsrc and davical is not working. This all worked fine with 
slightly older versions as noted later. The php extensions compiled 
alongside php 5.4 seem to have some missing references and get spat out 
when apache 2.4 loads. This is a show-stopper for davical. The apache 
error log shows:

PHP Warning:  PHP Startup: Unable to load dynamic library 
'/usr/pkg/lib/php/20120301/pdo.so' - /usr/pkg/lib/php/20120301/pdo.so: 
Undefined symbol "compiler_globals" (symnum = 24) in Unknown 
on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 
'/usr/pkg/lib/php/20120301/pgsql.so' - 
/usr/pkg/lib/php/20120301/pgsql.so: Undefined symbol 
"executor_globals" (symnum = 255) in Unknown on line 0
PHP Warning:  PHP Startup: gettext: Unable to initialize module\nModule 
compiled with build ID=API20100525,NTS\nPHP compiled with build 
ID=API20100525,TS\nThese options need to match\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 
'/usr/pkg/lib/php/20120301/pdo_pgsql.so' - 
/usr/pkg/lib/php/20120301/pdo_pgsql.so: Undefined symbol 
"file_globals" (symnum = 28) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 
'/usr/pkg/lib/php/20120301/iconv.so' - 
/usr/pkg/lib/php/20120301/iconv.so: Undefined symbol 
"sapi_globals" (symnum = 77) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 
'/usr/pkg/lib/php/20120301/curl.so' - /usr/pkg/lib/php/20120301/curl.so: 
Undefined symbol "file_globals" (symnum = 72) in Unknown on line 0
PHP Warning:  PHP Startup: calendar: Unable to initialize module\nModule 
compiled with build ID=API20100525,NTS\nPHP compiled with build 
ID=API20100525,TS\nThese options need to match\n in Unknown on line 0
[Fri May 09 16:22:32.373378 2014] [mpm_prefork:notice] [pid 5845] 
AH00163: Apache/2.4.9 (Unix) PHP/5.4.27 configured -- resuming normal 
operations


Installed:
apache-2.4.9        Apache HTTP (Web) server, version 2.4
php-5.4.27          PHP Hypertext Preprocessor version 5.4
ap24-php54-5.4.27   Apache (apache24) module for PHP5.4
php54-pgsql-5.4.27  PHP extension for PostgreSQL databases
php54-pdo-5.4.27    PHP extension for PHP Data Objects (base)
php54-pdo_pgsql-5.4.27 PHP extension for PHP Data Objects (PostgreSQL)
php54-iconv-5.4.27  PHP extension for character set conversion
php54-gettext-5.4.27 PHP extension for gettext support
php54-libawl-0.53   PHP Andrew's Web Libraries
php54-curl-5.4.27nb1 PHP extension for curl functions


Has anyone else encountered this or know of a workaround?

(Everything worked fine under when the PHP base was 5.4.13 and apache 
2.4.4 but I don't want to revert if possible)

Cheers
Dave


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