cpan[6]> install DB_File
Running install for module 'DB_File'
Checksum for /home/uce/.cpan/sources/authors/id/P/PM/PMQS/DB_File-1.838.tar.gz ok
Configuring P/PM/PMQS/DB_File-1.838.tar.gz with Makefile.PL
Parsing config.in...
Looks Good.
Checking if your kit is complete...
Looks good
'EXPATINCPATH' is not a known MakeMaker parameter name.
'EXPATLIBPATH' is not a known MakeMaker parameter name.
Warning (mostly harmless): No library found for -ldb
Generating a Unix-style Makefile
Writing Makefile for DB_File
Writing MYMETA.yml and MYMETA.json
  PMQS/DB_File-1.838.tar.gz
  /usr/local/bin/perl Makefile.PL EXPATLIBPATH=/non-standard/lib EXPATINCPATH=/non-standard/include -- OK
Running make for P/PM/PMQS/DB_File-1.838.tar.gz
cp DB_File.pm blib/lib/DB_File.pm
Running Mkbootstrap for DB_File ()
chmod 644 "DB_File.bs"
"/usr/local/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- DB_File.bs blib/arch/auto/DB_File/DB_File.bs 644
cc -c  -I/usr/local/BerkeleyDB/include -fwrapv -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.838\" -DXS_VERSION=\"1.838\" -fPIC "-I/usr/local/lib/perl5/5.24.0/x86_64-linux/CORE"  -D_NOT_CORE  -DmDB_Prefix_t=size_t -DmDB_Hash_t=u_int32_t   version.c 
version.c:30:16: fatal error: db.h: Ficheiro ou directoria inexistente
 #include <db.h>
                ^
compilation terminated.
make: ** [version.o] Erro 1
  PMQS/DB_File-1.838.tar.gz
  /usr/bin/make -- NOT OK
Failed during this command:
 PMQS/DB_File-1.838.tar.gz                    : make NO