Linux 2.6.37.6-35-desktop/#1 HP EliteBook 8540p Core(TM) i5 CPU M 540 @ 2.53GHz/2534(4) i686 3843 Mb openSUSE 11.4 "Celadon" $ gcc -dumpversion 4.5 $ gcc --version gcc (SUSE Linux) 4.5.1 20101208 [gcc-4_5-branch revision 167585] $ perl -V:.*size charsize='1'; doublesize='8'; fpossize='16'; gidsize='4'; i16size='2'; i32size='4'; i64size='8'; i8size='1'; intsize='4'; ivsize='8'; longdblsize='12'; longlongsize='8'; longsize='4'; lseeksize='8'; nvsize='12'; ptrsize='4'; shortsize='2'; sizesize='4'; u16size='2'; u32size='4'; u64size='8'; u8size='1'; uidsize='4'; uvsize='8'; $ perl -V (stripped) Summary of my perl5 (revision 5 version 14 subversion 1) configuration: Platform: osname=linux, osvers=2.6.37.6-31-desktop, archname=i686-linux-64int-ld config_args='-Duse64bitint -Duselongdouble -des' use64bitint=define, use64bitall=undef, uselongdouble=define cc='cc', ccflags ='-fno-strict-aliasing -pipe -fstack-protector -I/pro/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O2', cppflags='-fno-strict-aliasing -pipe -fstack-protector -I/pro/local/include' ccversion='', gccversion='4.5.1 20101208 [gcc-4_5-branch revision 167585]', gccosandvers='' intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12 ivtype='long long', ivsize=8, nvtype='long double', nvsize=12, Off_t='off_t', lseeksize=8 gnulibc_version='2.11.3' Characteristics of this binary (from libperl): Compile-time options: PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP PERL_PRESERVE_IVUV USE_64_BIT_INT USE_LARGE_FILES USE_LONG_DOUBLE USE_PERLIO USE_PERL_ATOF