Bug#788155: perl-modules: ExtUtils::MakeMaker installs perl modules in the wrong directory

[Niko Tyni]

On Mon, Jun 08, 2015 at 10:03:04PM +0000, Vincent Lefevre wrote:
> Package: perl-modules
> Version: 5.20.2-3+deb8u1
> Severity: important
> 
> While there were no problems with Debian up to Debian 7,
> ExtUtils::MakeMaker now installs perl modules in the wrong
> directory. For instance, I build Math-MPFR-3.24 with:
> 
>   unset PERL_LOCAL_LIB_ROOT PERL_MB_OPT PERL_MM_OPT
>   mkdir $HOME/testdir
>   perl Makefile.PL PREFIX="$HOME/testdir"

>From ExtUtils::MakeMaker documentation, about "PREFIX":

  How the exact location is determined is complicated and depends on how
  your Perl was configured.  INSTALL_BASE works more like what other build
  systems call "prefix" than PREFIX and we recommend you use that instead.

Indeed, setting INSTALL_BASE instead of PREFIX seems to do what you
want (as far as I can tell.)

Hope this helps,
-- 
Niko Tyni   ntyni at debian.org