Summary of my perl5 (revision 5 version 37 subversion 10) configuration: Platform: osname=linux osvers=5.19.0-31-generic archname=x86_64-linux uname='linux test-virtualbox 5.19.0-31-generic #32-ubuntu smp preempt_dynamic fri jan 20 15:20:08 utc 2023 x86_64 x86_64 x86_64 gnulinux ' config_args='-de -Dprefix=/home/brew/perl5/perlbrew/perls/perl-5.37.10 -Dusedevel -Aeval:scriptdir=/home/brew/perl5/perlbrew/perls/perl-5.37.10/bin' hint=recommended useposix=true d_sigaction=define useithreads=undef usemultiplicity=undef use64bitint=define use64bitall=define uselongdouble=undef usemymalloc=n default_inc_excludes_dot=define Compiler: cc='cc' ccflags ='-fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64' optimize='-O2' cppflags='-fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include' ccversion='' gccversion='12.2.0' gccosandvers='' intsize=4 longsize=8 ptrsize=8 doublesize=8 byteorder=12345678 doublekind=3 d_longlong=define longlongsize=8 d_longdbl=define longdblsize=16 longdblkind=3 ivtype='long' ivsize=8 nvtype='double' nvsize=8 Off_t='off_t' lseeksize=8 alignbytes=8 prototype=define Linker and Libraries: ld='cc' ldflags =' -fstack-protector-strong -L/usr/local/lib' libpth=/usr/local/lib /usr/lib/x86_64-linux-gnu /usr/lib /usr/lib64 libs=-lpthread -ldl -lm -lcrypt -lutil -lc perllibs=-lpthread -ldl -lm -lcrypt -lutil -lc libc=/lib/x86_64-linux-gnu/libc.so.6 so=so useshrplib=false libperl=libperl.a gnulibc_version='2.36' Dynamic Linking: dlsrc=dl_dlopen.xs dlext=so d_dlsymun=undef ccdlflags='-Wl,-E' cccdlflags='-fPIC' lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector-strong' Characteristics of this binary (from libperl): Compile-time options: HAS_TIMES PERLIO_LAYERS PERL_COPY_ON_WRITE PERL_DONT_CREATE_GVSV PERL_HASH_FUNC_SIPHASH13 PERL_HASH_USE_SBOX32 PERL_MALLOC_WRAP PERL_OP_PARENT PERL_PRESERVE_IVUV PERL_USE_DEVEL PERL_USE_SAFE_PUTENV USE_64_BIT_ALL USE_64_BIT_INT USE_LARGE_FILES USE_LOCALE USE_LOCALE_COLLATE USE_LOCALE_CTYPE USE_LOCALE_NUMERIC USE_LOCALE_TIME USE_PERLIO USE_PERL_ATOF Built under linux Compiled at Apr 4 2023 23:18:57 %ENV: PERLBREW_HOME="/home/brew/.perlbrew" PERLBREW_MANPATH="/home/brew/perl5/perlbrew/perls/perl-5.37.10/man" PERLBREW_PATH="/home/brew/perl5/perlbrew/bin:/home/brew/perl5/perlbrew/perls/perl-5.37.10/bin" PERLBREW_PERL="perl-5.37.10" PERLBREW_ROOT="/home/brew/perl5/perlbrew" PERLBREW_SHELLRC_VERSION="0.98" PERLBREW_VERSION="0.98" @INC: /home/brew/perl5/perlbrew/perls/perl-5.37.10/lib/site_perl/5.37.10/x86_64-linux /home/brew/perl5/perlbrew/perls/perl-5.37.10/lib/site_perl/5.37.10 /home/brew/perl5/perlbrew/perls/perl-5.37.10/lib/5.37.10/x86_64-linux /home/brew/perl5/perlbrew/perls/perl-5.37.10/lib/5.37.10