Perl's @INC - am I missing the point?

[Andrew Fabbro]

When building (compiling) perl, I wanted to include a directory where
we install our local modules. So I built perl with -Dotherlibdirs=/app/
common/oracle/perl/local.

Later, I installed various modules with PREFIX=/app/common/oracle/perl/
local

However, perl can't find them (and yes, I checked and /app/common/
oracle/perl/local is in @INC). However, if I put this in @INC:

/app/common/oracle/perl/local/lib/site_perl/5.8.8/PA-RISC2.0-LP64

Then it finds things and works just fine.

But what the...heck is the point of -Dotherlibdirs if what you point
it at doesn't work!? So should I rebuild perl with -Dotherlibdirs set
to "/app/common/oracle/perl/local/lib/site_perl/5.8.8/PA-RISC2.0-
LP64"? The whole point of this exercise was to avoid having to
manually "use lib"...

Or perhaps I'm just confused...

 

[xhoster]

When building (compiling) perl, I wanted to include a directory where
we install our local modules. So I built perl with -Dotherlibdirs=/app/
common/oracle/perl/local.

Later, I installed various modules with
PREFIX=/app/common/oracle/perl/local

For some reason, PREFIX automatically gets /lib added to the end before it
gets used for the location of installing the modules. I'm sure this makes
complete sense to those people who understand this stuff, but I am not one
of them.

However, perl can't find them (and yes, I checked and /app/common/
oracle/perl/local is in @INC). However, if I put this in @INC:

/app/common/oracle/perl/local/lib/site_perl/5.8.8/PA-RISC2.0-LP64

Then it finds things and works just fine.

It would probably work fine if you just put in
/app/common/oracle/perl/local/lib

But what the...heck is the point of -Dotherlibdirs if what you point
it at doesn't work!? So should I rebuild perl with -Dotherlibdirs set
to "/app/common/oracle/perl/local/lib/site_perl/5.8.8/PA-RISC2.0-
LP64"? The whole point of this exercise was to avoid having to
manually "use lib"...

I think you should rebuild with -Dotherlibdirs set to
/app/common/oracle/perl/local/lib

Or perhaps I'm just confused...

You and I both.

Xho

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[Andrew Fabbro]

It would probably work fine if you just put in
/app/common/oracle/perl/local/lib

Alas...nope.

 

[Ben Morrow]

When building (compiling) perl, I wanted to include a directory where
we install our local modules. So I built perl with -Dotherlibdirs=/app/
common/oracle/perl/local.

Later, I installed various modules with PREFIX=/app/common/oracle/perl/
local

However, perl can't find them (and yes, I checked and /app/common/
oracle/perl/local is in @INC). However, if I put this in @INC:

/app/common/oracle/perl/local/lib/site_perl/5.8.8/PA-RISC2.0-LP64

Then it finds things and works just fine.

You need to use LIB= for MakeMaker rather than PREFIX=. PREFIX is a
little weird (for historical reasons); it means 'this is where my whole
perl tree is installed', so it will attempt to create a whole lib/ man/
bin/ tree matching the one your perl is installed into, including
site_perl and so on.

Ben

 

[Ben Morrow]

You need to use LIB= for MakeMaker rather than PREFIX=. PREFIX is a
little weird (for historical reasons); it means 'this is where my whole
perl tree is installed', so it will attempt to create a whole lib/ man/
bin/ tree matching the one your perl is installed into, including
site_perl and so on.

Also, note that perl will only search arch-specific subdirs of
otherlibdirs if they existed when Configure was run. So you need to make
sure /app/common/oracle/perl/local/PA-RISC2.0-LP64 exists before you run
Configure.

Ben