$ rakubrew build moar-blead --configure-opts='--moar-option="--toolchain=posix"'
/usr/local/Cellar/perl/5.34.0/bin/perl -MExtUtils::Command -e cp 3rdparty/dyncall/dyncallback/*.h "/Users/user/.rakubrew/versions/moar-blead/install/include/dyncall"
/usr/local/Cellar/perl/5.34.0/bin/perl -MExtUtils::Command -e mkpath "/Users/user/.rakubrew/versions/moar-blead/install/include/mimalloc"
/usr/local/Cellar/perl/5.34.0/bin/perl -MExtUtils::Command -e cp 3rdparty/mimalloc/include/*.h "/Users/user/.rakubrew/versions/moar-blead/install/include/mimalloc"
dyld[96191]: Library not loaded: libmoar.so
Referenced from: /Users/user/.rakubrew/versions/moar-blead/install/bin/moar
Reason: tried: 'libmoar.so' (no such file), '/usr/local/lib/libmoar.so' (no such file), '/usr/lib/libmoar.so' (no such file), '/Users/user/.rakubrew/versions/moar-blead/nqp/libmoar.so' (no such file), '/usr/local/lib/libmoar.so' (no such file), '/usr/lib/libmoar.so' (no such file)
Use of uninitialized value in quotemeta at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 130.
Use of uninitialized value in substitution (s///) at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 130.
Use of uninitialized value in substitution (s///) at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 130.
Use of uninitialized value in quotemeta at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 132.
Use of uninitialized value in concatenation (.) or string at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 138.
Use of uninitialized value in sprintf at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 165.
Redundant argument in sprintf at /Users/user/.rakubrew/versions/moar-blead/nqp/tools/lib/NQP/Config/NQP.pm line 165.
Use of uninitialized value $var_text in split at /Users/user/.rakubrew/versions/moar-blead/nqp/3rdparty/nqp-configure/lib/NQP/Macros.pm line 604.
Cleaning up ...
+++ Preparing MOAR build directories
++++++ Building MOAR backend
+++ Generating gen/moar/stage1/nqpmo.nqp
+++ Compiling gen/moar/stage1/nqpmo.moarvm
dyld[96203]: Library not loaded: libmoar.so
Referenced from: /Users/user/.rakubrew/versions/moar-blead/install/bin/moar
Reason: tried: 'libmoar.so' (no such file), '/usr/local/lib/libmoar.so' (no such file), '/usr/lib/libmoar.so' (no such file), '/Users/user/.rakubrew/versions/moar-blead/nqp/libmoar.so' (no such file), '/usr/local/lib/libmoar.so' (no such file), '/usr/lib/libmoar.so' (no such file)
make: *** [Makefile:363: gen/moar/stage1/nqpmo.moarvm] Abort trap: 6
Command failed (status 512): make
at /Users/user/.rakubrew/versions/moar-blead/nqp/3rdparty/nqp-configure/lib/NQP/Config.pm line 34.
NQP::Config::__ANON__("Command failed (status 512): make\x{a}") called at /Users/user/.rakubrew/versions/moar-blead/nqp/3rdparty/nqp-configure/lib/NQP/Config.pm line 1502
NQP::Config::system_or_die("make") called at Configure.pl line 109
Command failed (status 512): /usr/local/Cellar/perl/5.34.0/bin/perl Configure.pl --prefix=/Users/user/.rakubrew/versions/moar-blead/install --make-install --git-protocol=https --no-relocatable --no-ignore-errors --silent-build --no-force-rebuild --git-cache-dir=/Users/user/.rakubrew/git_reference --backends=moar --gen-moar=master --moar-option=--toolchain=posix
at /Users/user/.rakubrew/versions/moar-blead/3rdparty/nqp-configure/lib/NQP/Config.pm line 34.
NQP::Config::__ANON__("Command failed (status 512): /usr/local/Cellar/perl/5.34.0/bi"...) called at /Users/user/.rakubrew/versions/moar-blead/3rdparty/nqp-configure/lib/NQP/Config.pm line 1502
NQP::Config::system_or_die("/usr/local/Cellar/perl/5.34.0/bin/perl", "Configure.pl", "--prefix=/Users/user/.rakubrew/versions/moar-blead/install", "--make-install", "--git-protocol=https", "--no-relocatable", "--no-ignore-errors", "--silent-build", ...) called at /Users/user/.rakubrew/versions/moar-blead/tools/lib/NQP/Config/Rakudo.pm line 724
NQP::Config::Rakudo::gen_nqp(NQP::Config::Rakudo=HASH(0x7fe99d80c5c0)) called at Configure.pl line 101
Failed running /usr/local/Cellar/perl/5.34.0/bin/perl Configure.pl --backends=moar --gen-moar=master --gen-nqp=master --make-install --moar-option="--toolchain=posix" --git-cache-dir="/Users/user/.rakubrew/git_reference" at /usr/local/Cellar/perl/5.34.0/lib/perl5/site_perl/5.34.0/App/Rakubrew/Build.pm line 113.
$ ls -1 ~/.rakubrew/versions/moar-blead/nqp/MoarVM/
3rdparty/
build/
docs/
lib/
pkgconfig/
ports/
src/
tools/
Artistic2.txt
CREDITS
Configure.pl*
LICENSE
Makefile
README.markdown
VERSION
azure-pipelines.yml
check.todo
libmoar.so*
moar*