cpan trouble, where to start?

[PerlPeer]

Hi, I have trouble with downloading and installing cpan modules. I cannot find a solution since I do not understand my problem.
Basic info:
UNIX, on mac os x 10.6.8 and running the terminal for command line.
v5.10.0 built for darwin-thread-multi-2level

Following guidance on the cpan site, I tried to first install cpanminus :

miya-saiko-no-iMac:~ arend$ cpan App::cpanminus

CPAN: Storable loaded ok (v2.18)
Going to read /Users/arend/.cpan/Metadata
Database was generated on Tue, 08 Jan 2013 07:07:36 GMT
Running install for module 'App::cpanminus'
Running make for M/MI/MIYAGAWA/App-cpanminus-1.5019.tar.gz
CPAN: Digest::SHA loaded ok (v5.45)
CPAN: Compress::Zlib loaded ok (v2.008)
Checksum for /Users/arend/.cpan/sources/authors/id/M/MI/MIYAGAWA/App-c
+panminus-1.5019.tar.gz ok
CPAN: Archive::Tar loaded ok (v1.38)
App-cpanminus-1.5019/
App-cpanminus-1.5019/bin/
App-cpanminus-1.5019/Changes
App-cpanminus-1.5019/lib/
App-cpanminus-1.5019/Makefile.PL
App-cpanminus-1.5019/MANIFEST
App-cpanminus-1.5019/META.json
App-cpanminus-1.5019/META.yml
App-cpanminus-1.5019/README
App-cpanminus-1.5019/t/
App-cpanminus-1.5019/t/happy_cpantesters.t
App-cpanminus-1.5019/lib/App/
App-cpanminus-1.5019/lib/App/cpanminus.pm
App-cpanminus-1.5019/bin/cpanm
CPAN: File::Temp loaded ok (v0.18)

first trouble:

  CPAN.pm: Going to build M/MI/MIYAGAWA/App-cpanminus-1.5019.tar.gz
Checking if your kit is complete...
Looks good
Warning: prerequisite ExtUtils::Install 1.46 not found. We have 1.44.
Warning: prerequisite Module::Build 0.36 not found. We have 0.280801.
Writing Makefile for App::cpanminus
Could not read '/Users/arend/.cpan/build/App-cpanminus-1.5019-wGrBPa/M
+ETA.yml'. Falling back to other methods to determine prerequisites
---- Unsatisfied dependencies detected during ----
----   MIYAGAWA/App-cpanminus-1.5019.tar.gz   ----
    Module::Build [requires]
    ExtUtils::Install [requires]
Shall I follow them and prepend them to the queue
of modules we are processing right now? [yes]

Selecting "yes":

Shall I follow them and prepend them to the queue
of modules we are processing right now? [yes]

results in more and more demands for necessary modules that if "followed" by selecting "yes" repeatedly, finally end with:

CPAN.pm: Going to build Y/YV/YVES/ExtUtils-Install-1.54.tar.gz

Checking if your kit is complete...
Looks good
Writing Makefile for ExtUtils::Install
Could not read '/Users/arend/.cpan/build/ExtUtils-Install-1.54-Zdx4FY/
+META.yml'. Falling back to other methods to determine prerequisites
make: *** No rule to make target `/System/Library/Perl/5.10.0/darwin-t
+hread-multi-2level/CORE/config.h', needed by `Makefile'.  Stop.
  YVES/ExtUtils-Install-1.54.tar.gz
  make -- NOT OK
Warning (usually harmless): 'YAML' not installed, will not store persi
+stent state
Running make test
  Can't test without successful make
Running make install
  Make had returned bad status, install seems impossible
Running make for M/MI/MIYAGAWA/App-cpanminus-1.5019.tar.gz
  Has already been unwrapped into directory /Users/arend/.cpan/build/A
+pp-cpanminus-1.5019-XCFbKl

  CPAN.pm: Going to build M/MI/MIYAGAWA/App-cpanminus-1.5019.tar.gz

Warning: Prerequisite 'ExtUtils::Install => 1.46' for 'M/MI/MIYAGAWA/A
+pp-cpanminus-1.5019.tar.gz' failed when processing 'Y/YV/YVES/ExtUtil
+s-Install-1.54.tar.gz' with 'make => NO'. Continuing, but chances to 
+succeed are limited.
Warning: Prerequisite 'Module::Build => 0.36' for 'M/MI/MIYAGAWA/App-c
+panminus-1.5019.tar.gz' failed when processing 'L/LE/LEONT/Module-Bui
+ld-0.4003.tar.gz' with 'make => NO'. Continuing, but chances to succe
+ed are limited.
make: *** No rule to make target `/System/Library/Perl/5.10.0/darwin-t
+hread-multi-2level/CORE/config.h', needed by `Makefile'.  Stop.
  MIYAGAWA/App-cpanminus-1.5019.tar.gz
  make -- NOT OK
Warning (usually harmless): 'YAML' not installed, will not store persi
+stent state
Running make test
  Can't test without successful make
Running make install
  Make had returned bad status, install seems impossible
Could not read '/Users/arend/.cpan/build/ExtUtils-ParseXS-3.18-6oCmHR/
+META.yml'. Falling back to other methods to determine prerequisites
miya-saiko-no-iMac:~ arend$

Does anyone have an idea? Since ExtUtils is not by far the only module in the wrong version I wonder if there is something wrong with the general perl installation?


Ok, it seems to have to do something with installation on mac os x....will post a new thread on this soon when I know what to ask