I suppose you've downloaded mod_perl-1.31, which is for the older Apache-1 branch.  Try mod_perl-2.0.4 instead.

Update: as you're using the CPAN shell, I guess the problem is that it by default gets the most recently released version, and mod_perl-1.31 is more recent (13 May 2009) than mod_perl-2.0.4 (17 Apr 2008) — kind of unfortunate...

So try: install G/GO/GOZER/mod_perl-2.0.4.tar.gz  from the CPAN shell.

In reply to Re^3: mod_perl installation - missing apache src by almut
in thread mod_perl installation - missing apache src by ARiccela

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