Is this what you mean?
use constant MP_GEN => $ENV{MOD_PERL}
? { ( exists $ENV{MOD_PERL_API_VERSION} and
$ENV{MOD_PERL_API_VERSION} >= 2 ) ? 2 : 1 }
: 0;
It sets the constant |MP_GEN| to 0 if mod_perl is not available, to 1 if
running under mod_perl 1.0 and 2 for mod_perl 2.0.
Then you can
require foo if (MP_GEN == 2);
or whatever.
(See
http://perl.apache.org/docs/2.0/user/porting/porting.html#Porting_a_Module_to_Run_under_both_mod_perl_2_0_and_mod_perl_1_0)
Issac
Patrick Galbraith wrote:
Hi all,
I used to know the trick, I think, but can't remember. I want to code
my application to be smart about whether it's on a system that can use
mod_perl2/apreq, or if I have to use CGI. I 've code my app to use CGI
successfully, but would like to keep the code that I worked to get
apreq working as well. I would like for my application to be smart
enough to say use apreq if it's there, or use CGI if it isn't. What's
the magical trick to toggle the 'use libfoo' or 'use libfee'? Kindof
like #ifdefs in C...
Thanks!
Patrick
