pthread.h: present but cannot be compiled

[YuePing Lu]

When I run config (./configure --prefix=PREFIX) for apache 2.52 on AIX
5.2, I got the following error:

Checking for Threads...
checking pthread.h usability... no
checking pthread.h presence... yes
configure: WARNING: pthread.h: present but cannot be compiled
configure: WARNING: pthread.h: check for missing prerequisite headers?
configure: WARNING: pthread.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to address@hidden ##
configure: WARNING:     ## ------------------------------------ ##
checking for pthread.h... yes

As the result, I can't compile it, I got error:
"Making all in srclib
Making all in apr
Making all in strings
        /bin/sh
/da-curry_1/crnqc/automation/httpd-2.0.46/srclib/apr/libtool --silent
--mode=compile gcc -g -O2   -DHAVE_CONFIG_H -U__STR__ -D_USE_IRS
-D_THREAD_SAFE   -I../include -I../include/arch/unix  -c
apr_snprintf.c && touch apr_snprintf.lo
In file included from ../include/apr_portable.h:85,
                 from apr_snprintf.c:65:
/usr/include/pthread.h:556: error: parse error before '*' token
/usr/include/pthread.h:560: error: parse error before '*' token
/usr/include/pthread.h:563: error: parse error before '*' token
/usr/include/pthread.h:566: error: parse error before '*' token
/usr/include/pthread.h:569: error: parse error before '*' token
/usr/include/pthread.h:572: error: parse error before '*' token
/usr/include/pthread.h:575: error: parse error before '*' token
/usr/include/pthread.h:578: error: parse error before '*' token
/usr/include/pthread.h:582: error: parse error before '*' token
/usr/include/pthread.h:585: error: parse error before '*' token
/usr/include/pthread.h:589: error: parse error before '*' token
make: 1254-004 The error code from the last command is 1."

I need to compile and install apache 2.52 on my AIX 5.2, please reply to me ASAP
Thanks,
Yueping Lu