Here is how it looks if I do it manually (again I use INC otherwise I get errors for missing stuff..):

# perl Makefile.PL INC='-I/usr/lib/oracle/11.2.0.2/client/rdbms/public
+ -I/usr/lib64/perl5/site_perl/5.12.3/x86_64-linux-thread-multi/auto/D
+BI'


Using DBI 1.616 (for perl 5.012003 on x86_64-linux-thread-multi) insta
+lled in /usr/lib64/perl5/site_perl/5.12.3/x86_64-linux-thread-multi/a
+uto/DBI/

Configuring DBD::Oracle for perl 5.012003 on linux (x86_64-linux-threa
+d-multi)

Remember to actually *READ* the README file! Especially if you have an
+y problems.

Installing on a linux, Ver#2.6
Using Oracle in /usr/lib/oracle/11.2.0.2/client
DEFINE _SQLPLUS_RELEASE = "1102000200" (CHAR)
Oracle version 11.2.0.2 (11.2)
Found /usr/lib/oracle/11.2.0.2/client/rdbms/demo/demo_xe.mk
Using /usr/lib/oracle/11.2.0.2/client/rdbms/demo/demo_xe.mk
Looks like Oracle XE (/usr/lib/oracle/11.2.0.2/client/rdbms/demo/demo_
+xe.mk)
Reading /usr/lib/oracle/11.2.0.2/client/rdbms/demo/demo_xe.mk
Your LD_LIBRARY_PATH env var is set to '/usr/lib/oracle/11.2.0.2/clien
+t/lib:/usr/lib/oracle/11.2.0.2/client/lib'

client_version=11.2


DEFINE= -Wall -Wno-comment -DUTF8_SUPPORT -DORA_OCI_VERSION=\"11.2.0.2
+\" -DORA_OCI_102 -DORA_OCI_112


Checking for functioning wait.ph


System: perl5.012003 linux mybox 2.6.34-sabayon #1 smp mon may 31 16:0
+0:15 utc 2010 x86_64 intel(r) core(tm) i5 cpu m 520 @ 2.40ghz genuine
+intel gnulinux 
Compiler:   x86_64-pc-linux-gnu-gcc -O2 -march=x86-64 -pipe -D_REENTRA
+NT -D_GNU_SOURCE -fno-strict-aliasing -pipe -D_LARGEFILE_SOURCE -D_FI
+LE_OFFSET_BITS=64
Linker:     /usr/bin/ld
Sysliblist: 
Oracle makefiles would have used these definitions but we override the
+m:
  CC:       /usr/bin/gcc
  LDFLAGS:  -g
           [-g]
Linking with -L../../ -locci -lclntsh -lpthread

Checking if your kit is complete...
Looks good
Warning: -L../../ changed to -L/root/.cpan/build/DBD-Oracle-1.28-enbAG
+6/../../
Note (probably harmless): No library found for -locci
Note (probably harmless): No library found for -lclntsh
LD_RUN_PATH=/usr/lib/oracle/11.2.0.2/client/lib:/usr/lib/oracle/11.2.0
+.2/client/rdbms/lib
Using DBD::Oracle 1.28.
Using DBD::Oracle 1.28.
Using DBI 1.616 (for perl 5.012003 on x86_64-linux-thread-multi) insta
+lled in /usr/lib64/perl5/site_perl/5.12.3/x86_64-linux-thread-multi/a
+uto/DBI/
Writing Makefile for DBD::Oracle

***  If you have problems...
     read all the log printed above, and the README and README.help.tx
+t files.
     (Of course, you have read README by now anyway, haven't you?)
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