also tried php5.4-201204170330 with the same result.

Are there any earlier configure errors/warnings?  Check config.log and see what 
is failing.

When configure succeeds, you should have main/internal_functions.c and 
main/internal_functions_cli.c, both declaring php_register_internal_extensions.

Have your configure options worked in previous versions?  See 
https://bugs.php.net/bug.php?id=61450

Thanks for the reply...

I have tried shorting down the config to this.

./configure --prefix=/bp/d01/usr/home/bpw/bin/php \
--with-apxs2=/bp/d01/usr/home/bpw/bin/apache/bin/apxs \
--with-config-file-path=/bp/d01/usr/home/bpw/bin/apache/conf \
--enable-zip \
--with-zlib-dir=/bp/d01/usr/home/bpw/bin/zlib \
--enable-shared \
--with-libxml-dir=/bp/d01/usr/home/bpw/bin/libxml2

The config is successful as per previous config but fails on the "make" with the 
same error. I dont believe i made that clear in my original post, sorry.

config.log doesnt appear to reveal any standouts?

Earlier versions were never compiled with CLI support.

I checked the 2 files mentioned and they both have -

PHPAPI int php_register_internal_extensions(TSRMLS_D)
{
	return php_register_extensions(php_builtin_extensions, EXTCOUNT 
TSRMLS_CC);
}

Thanks.

I was having the same issue with 5.4.3 on AIX 6.1. Modifying the generated 
Makefile as below fixed the issue for me:

20c20
< PHP_CLI_OBJS = sapi/cli/php_cli.lo sapi/cli/php_http_parser.lo 
sapi/cli/php_cli_server.lo
---
> PHP_CLI_OBJS = sapi/cli/php_cli.lo sapi/cli/php_http_parser.lo 
sapi/cli/php_cli_server.lo $(PHP_BINARY_OBJS)
24c24
< PHP_CGI_OBJS = sapi/cgi/cgi_main.lo sapi/cgi/fastcgi.lo
---
> PHP_CGI_OBJS = sapi/cgi/cgi_main.lo sapi/cgi/fastcgi.lo 
main/internal_functions.lo

Hi,

You legend... I had time to make the changes you suggested and everything worked 
a treat.

Thanks heaps as its very much appreciated.

Found problem about this too when build PHP5.4.7 with apache2.4.3 on aix7.1tl1sp4

ld: 0711-317 ERROR: Undefined symbol: php_register_internal_extensions
collect2: ld returned 8 exit status
make: *** [sapi/cli/php] Error 1

After modify Makefile like comment  "[2012-05-18 13:24 UTC] php at manujbhatia dot net "
20c20
< PHP_CLI_OBJS = sapi/cli/php_cli.lo sapi/cli/php_http_parser.lo 
sapi/cli/php_cli_server.lo
---
> PHP_CLI_OBJS = sapi/cli/php_cli.lo sapi/cli/php_http_parser.lo 
sapi/cli/php_cli_server.lo $(PHP_BINARY_OBJS)
24c24
< PHP_CGI_OBJS = sapi/cgi/cgi_main.lo sapi/cgi/fastcgi.lo
---
> PHP_CGI_OBJS = sapi/cgi/cgi_main.lo sapi/cgi/fastcgi.lo 
main/internal_functions.lo


make and install succeed :)

The solution from php at manujbhatia dot net worked for me!

Building 5.4.9 on AIX 5.3. Thanks very much.

Encountered the same bug with PHP 5.4.10 on AIX 6.1 and the above fix worked perfectly.  Thanks!

Same problem building PHP CLI 5.5.9 on AIX 6.1, fix worked great!

Same problem building PHP CLI 5.6.10 on AIX 7.1. This issue is still open, since 3 years!

bug still exists with 5.6.10 on AIX 6.1 with xlC 12 compiler.