I have an up to date copy of XCode: Version 11.0 (11A420a) I use perlbrew to do installs, and the last successful one was 5-28.0 Jul 26 2018
Here is that tail of the log:
Finishing processing Unicode properties Compiling Perl properties Creating Perl synonyms Writing tables Making pod file Making test script Updating 'mktables.lst' ./miniperl -Ilib -MExtUtils::Miniperl -e 'writemain(\"perlmain.c", @ARGV)' DynaLoader cc -c -DPERL_CORE -fno-common -DPERL_DARWIN -mmacosx-version-min=10.14 -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -I/opt/local/include -DPERL_USE_SAFE_PUTENV -std=c89 -O3 -Wall -Werror=declaration-after-statement -Werror=pointer-arith -Wextra -Wc++-compat -Wwrite-strings perlmain.c cc -c -DPERL_CORE -fno-common -DPERL_DARWIN -mmacosx-version-min=10.14 -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -I/opt/local/include -DPERL_USE_SAFE_PUTENV -std=c89 -O3 -Wall -Werror=declaration-after-statement -Werror=pointer-arith -Wextra -Wc++-compat -Wwrite-strings op.c cc -c -DPERL_CORE -fno-common -DPERL_DARWIN -mmacosx-version-min=10.14 -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -I/opt/local/include -DPERL_USE_SAFE_PUTENV -std=c89 -O3 -Wall -Werror=declaration-after-statement -Werror=pointer-arith -Wextra -Wc++-compat -Wwrite-strings perl.c ./miniperl -Ilib make_ext.pl DynaLoader.o MAKE="/Applications/Xcode.app/Contents/Developer/usr/bin/make" LIBPERL_A=libperl.a LINKTYPE=static CCCDLFLAGS= Generating a Unix-style Makefile Writing Makefile for DynaLoader "../../miniperl" "-I../../lib" DynaLoader_pm.PL DynaLoader.pm rm -f DynaLoader.xs cp dl_dlopen.xs DynaLoader.xs "../../miniperl" "-I../../lib" "../../lib/ExtUtils/xsubpp" -noprototypes -typemap '/Users/roger/perl5/perlbrew/build/perl-5.30.0/perl-5.30.0/ext/DynaLoader/../../lib/ExtUtils/typemap' DynaLoader.xs > DynaLoader.xsc mv DynaLoader.xsc DynaLoader.c cc -c -fno-common -DPERL_DARWIN -mmacosx-version-min=10.14 -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -I/opt/local/include -DPERL_USE_SAFE_PUTENV -Wall -Werror=declaration-after-statement -Werror=pointer-arith -Wextra -Wc++-compat -Wwrite-strings -O3 -DVERSION=\"1.45\" -DXS_VERSION=\"1.45\" "-I../.." -DLIBC="" DynaLoader.c rm -rf ../../DynaLoader.o cp DynaLoader.o ../../DynaLoader.o rm -f libperl.a /opt/local/bin/ar rc libperl.a op.o perl.o gv.o toke.o perly.o pad.o regcomp.o dump.o util.o mg.o reentr.o mro_core.o keywords.o hv.o av.o run.o pp_hot.o sv.o pp.o scope.o pp_ctl.o pp_sys.o doop.o doio.o regexec.o utf8.o taint.o deb.o universal.o globals.o perlio.o perlapi.o numeric.o mathoms.o locale.o pp_pack.o pp_sort.o caretx.o dquote.o time64.o DynaLoader.o /opt/local/bin/ranlib: object: libperl.a(op.o) malformed object (unknown load command 1) /opt/local/bin/ar: internal ranlib command failed make: *** [libperl.a] Error 1 ##### Brew Failed #####