Summary of my perl5 (revision 5 version 8 subversion 9) configuration: Platform: osname=linux, osvers=4.18.0-193.28.1.el8_2.x86_64, archname=x86_64-linux uname='linux rs3.benefitslink.com 4.18.0-193.28.1.el8_2.x86_64 #1 smp thu oct 22 00:20:22 utc 2020 x86_64 x86_64 x86 _64 gnulinux ' config_args='-de -Dprefix=/home/www/perl5/perlbrew/perls/perl-5.8.9 -Aeval:scriptdir=/home/www/perl5/perlbrew/perls/ perl-5.8.9/bin' hint=recommended, useposix=true, d_sigaction=define usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef useperlio=define d_sfio=undef uselargefiles=define usesocks=undef use64bitint=define use64bitall=define uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=6 4', optimize='-O2', cppflags='-fwrapv -fno-strict-aliasing -pipe -I/usr/local/include' ccversion='', gccversion='8.3.1 20191121 (Red Hat 8.3.1-5)', gccosandvers='' intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16 ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='cc', ldflags =' -L/usr/local/lib' libpth=/usr/local/lib /lib/../lib64 /usr/lib/../lib64 /lib /usr/lib /lib64 /usr/lib64 /usr/local/lib64 libs=-ldl -lm -lcrypt -lutil -lc perllibs=-ldl -lm -lcrypt -lutil -lc libc=libc-2.28.so, so=so, useshrplib=false, libperl=libperl.a gnulibc_version='2.28' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E' cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib' Characteristics of this binary (from libperl): Compile-time options: PERL_MALLOC_WRAP USE_64_BIT_ALL USE_64_BIT_INT USE_FAST_STDIO USE_LARGE_FILES USE_PERLIO Locally applied patches: Devel::PatchPerl 2.02 Built under linux Compiled at Nov 16 2020 19:57:40 %ENV: PERLBREW_HOME="/home/www/.perlbrew" PERLBREW_ROOT="/home/www/perl5/perlbrew" PERLBREW_SHELLRC_VERSION="0.89" @INC: /home/www/perl5/perlbrew/perls/perl-5.8.9/lib/5.8.9/x86_64-linux /home/www/perl5/perlbrew/perls/perl-5.8.9/lib/5.8.9 /home/www/perl5/perlbrew/perls/perl-5.8.9/lib/site_perl/5.8.9/x86_64-linux /home/www/perl5/perlbrew/perls/perl-5.8.9/lib/site_perl/5.8.9 .