Re: mod_perl and apache 2.4

[Michael Schout <ms...@gkg.net>]

On 5/8/15 7:55 PM, GLG wrote:
> It doesn't matter how I install mod_perl (dynamic or static. Also tried via
> Webmin), the end result is always the same. This on FreeBSD 10.1
...
> httpd: Syntax error on line 107 of /usr/local/etc/apache22/httpd.conf:
> Cannot load /usr/local/libexec/apache22/mod_perl.so into server:
> /usr/local/libexec/apache22/mod_perl.so: Undefined symbol
> "modperl_io_perlio_restore_stdout"
> -------------------------------------

I know this is old, but I'm going to reply because I ran into this a
while back (and solved it).  Hopefully I can help others.

This problem has to do with the fact that FreeBSD uses clang to compile
mod_perl, and clang handles C99 inline functions differently from gcc's
default mode (which is C89 for GCC < 5.0).  You'll run into this exact
same problem everywhere clang is used (e.g.: OS X).

The short answer is you have two choices:

1) compile with gcc
or
2) patch src/modules/perl/modperl_common_util.h and make sure APR_INLINE
is not defined before compiling.

See the ports Makefile in www/mod_perl2 under the post-patch rule for
how the ports tree handles this (unset APR_INLINE)

I realize this may be too late to help you, but hopefully this will help
someone else down the line.

See: http://clang.llvm.org/compatibility.html#inline

Regards,
Michael Schout