Using AIX 4.3.3 and C for AIX 5.0 compiler.  When running configure, I do the following:

[root@mars /php]# export CC=/usr/bin/cc
[root@mars /php]# export CFLAGS="-g -ma"
[root@mars /php]# cd php-4.1.0/
[root@mars php-4.1.0]# ./configure  --enable-c9x-inline --with-apxs=/usr/HTTPServer/bin/apxs

I get:

----------------
checking for Apache module support via DSO through APXS...

Sorry, I was not able to successfully run APXS.  Possible reasons:

1.  Perl is not installed;
2.  Apache was not compiled with DSO support (--enable-module=so);
3.  'apxs' is not in your path.  Try to use --with-apxs=/path/to/apxs
The output of /usr/HTTPServer/bin/apxs follows
Usage: apxs -g [-S <var>=<val>] -n <modname>
       apxs -q [-S <var>=<val>] <query> ...
       apxs -c [-S <var>=<val>] [-o <dsofile>] [-D <name>[=<value>]]
               [-I <incdir>] [-L <libdir>] [-l <libname>] [-Wc,<flags>]
REQUIRED OPTION[-bE: <filename.exp>]
               [-Wl,<flags>] <files> ...
       apxs -i [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...
       apxs -e [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...
configure: error: Aborting

--------------------------------

Not sure what's going on here, I could compile 4.0.5 on AIX using the same OS version and compiler.  I did make sure that /usr/HTTPServer/bin/apxs has a good pointer to perl (it defaults to /usr/local/bin/perl, which is wrong).  In apxs, there is a note about apache modules:

## IMPORTANT NOTE FOR APXS USE ON AIX (ONLY):

##1. AIX requires that all dynamically linkable objects to EXPORT their public
##      interfaces in a .exp file. This is required at the link step.
##      If you do not have an .exp file, then you can generate one containing
##      a single line with the name of the module. For example, in our sample
##      module, example_module.c we generate an example_module.exp with
##      1 line -> example_module.
##      For AIX only we have added an additional option -bE: <filename.exp>
##      which is supplied as option on input to APXS script.

##2. Some 3rd party modules use a ./configure script with an APXS option. These
##      configure scripts use the APXS script with a -q (query) option to get
##      information on Compiler flags and Link flags. If the congfigure script
##      relies on getting CFG_LDFLAGS_SHLIB from APXS script then the configure
##      script will fail. The CFG_LDFLAGS_SHLIB in APXS script are not complete
##      without the :bE options passed as input to APXS. Many configure script
##      on AIX have an option to supply  these Link Flags.

##3. NOTE: The httpd.exp file on IHS 1.3.6 is installed into
##              /usr/HTTPServer/example_module
##      but this script relies on  httpd.exp being located in
##
##              /usr/HTTPServer/libexec
##      Please copy httpd.exp to /usr/HTTPServer/libexec before executing
##      the APXS script.


Any help would be appreciated.

Zack