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I have a similar problem compiling php 5.2.17 on aix 5.3

I've configured with ./configure --program-prefix=4s --with-ibm-
db2=/db2/v91t/db2lawt/sqllib --with-apxs2=/usr/apache2/bin/apxs --enable-pcntl -
-enable-ftp --enable-cli

Now I'm running gnu make 3.82 and getting these errors:

o Zend/zend_interfaces.lo Zend/zend_exceptions.lo Zend/zend_strtod.lo Zend/zend_
objects.lo Zend/zend_object_handlers.lo Zend/zend_objects_API.lo Zend/zend_defau
lt_classes.lo Zend/zend_execute.lo ext/pcntl/pcntl.lo ext/pcntl/php_signal.lo sa
pi/cli/php_cli.lo sapi/cli/php_cli_readline.lo sapi/cli/getopt.lo main/internal_
functions_cli.lo -lrt -lm -lpthread -lxml2 -liconv -lm -lxml2 -liconv -lm -ldb2
-lxml2 -liconv -lm -lxml2 -liconv -lm -lxml2 -liconv -lm -lxml2 -liconv -lm  -o
sapi/cli/php
ld: 0711-317 ERROR: Undefined symbol: .__floor
ld: 0711-317 ERROR: Undefined symbol: .__ceil
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
make: *** [sapi/cli/php] Error 8

Please tell me what more information is required for this issue.

Update - this seems to be a bogus bug as far as PHP is concerned:

I followed instructions in this thread 
http://www.ibm.com/developerworks/forums/thread.jspa?threadID=124094 then make 
clean, reconfigure for good measure, and finally got make to complete.  AIX is a 
piece.

== Quote of above URL ==
Please open /usr/include/math.h, and search __floor. then you can find this:
#if (__xlC__ >= 0x0600) /* VAC version 6 and above */
#define floor(__x) __floor(__x)
#define ceil(__x) __ceil(__x)
#endif /* __xlC__ >= 0x0600 */
Maybe you have a xlc whose version is lager than 0x0600( I have 600268439176, 
and have this problem when I build perl from source code).

I don't know the difference of function __floor , _floor and floor, but I 
changed __floor to floor and __ceil to ceil , and recover it after I completed 
the compiling.
== End quote ==