Freetz makefile: unrecognized command-line option ‘-m32’ - linux

Question

I'm trying to build a Freetz firmware for my Fritzbox. I'm trying to do this on Ubuntu running in Parallels on my M1 MBP.
After eliminating all other issues (mainly dependencies), I end up with the following error:
cc: error: unrecognized command-line option ‘-m32’
The full dialog is:
parallels#ubuntu-linux-22-04-desktop:~/Downloads/freetz-ng$ make
Freetz-NG 20037-37d64c4f7 trunk 2022-07-08
cmd() { make -j3 "$#" || { [ "2" = "0" ] && echo && cat .build.log 2>/dev/null; kill $$ 2>/dev/null || kill $$$$ 2>/dev/null; printf "\n\\033[33m%s\\033[m\n" "ERROR: Build failed."; exit 1; } }; mkdir -p source; [ -n "" ] && step="/" || step=""; [ -n "" ] && step="$step/"; case "" in BIN) echo -n "package/" >source/.echo_item_tmp ;; LIB) echo -n "library/" >source/.echo_item_tmp ;; HTL) echo -n "tools/" >source/.echo_item_tmp ;; KTC) echo -n "toolchain/kernel$step" >source/.echo_item_tmp ;; TTC) echo -n "toolchain/target$step" >source/.echo_item_tmp ;; KRN) echo -n "kernel" >source/.echo_item_tmp ;; esac; if ! diff -q source/.echo_item_tmp source/.echo_item_new >/dev/null 2>&1 || [ ! -e source/.echo_item_1st ]; then if [ -e source/.echo_item_end -a -e source/.echo_item_new -a -e source/.echo_item_1st ]; then echo -e "\e[48;5;26mdone\e[49m."; rm -f source/.echo_item_end source/.echo_item_1st; fi; [ -s source/.echo_item_tmp ] && cat source/.echo_item_tmp > source/.echo_item_new 2>/dev/null; [ -s source/.echo_item_new ] || cat source/.echo_item_old > source/.echo_item_new 2>/dev/null; if [ -s "source/.echo_item_new" ]; then echo -ne "\e[48;5;90m---> "; cat source/.echo_item_new 2>/dev/null | tee source/.echo_item_old; echo -ne "\e[49m ... "; [ "2" != "0" ] && echo; touch source/.echo_item_end; touch source/.echo_item_1st; fi; fi; echo -ne "\e[48;5;56mbuilding\e[49m ... "; cmd -C /home/parallels/Downloads/freetz-ng/source/host-tools/pseudo-0cda3ba5f94aed8d50652a99ee9c502975aa2926/arch install-lib
---> tools/pseudo-host ...
building ... cc -fno-strict-aliasing -pipe -std=gnu99 -Wall -W -Wextra -Wno-deprecated-declarations -fPIC -D_LARGEFILE64_SOURCE -D_ATFILE_SOURCE -Wno-cast-function-type -Wno-nonnull-compare -fcommon -m32 -DPSEUDO_PREFIX='"/home/parallels/Downloads/freetz-ng/tools/build"' -DPSEUDO_SUFFIX='""' -DPSEUDO_BINDIR='"bin"' -DPSEUDO_LIBDIR='"lib"' -DPSEUDO_LOCALSTATEDIR='"var/pseudo"' -DPSEUDO_VERSION='"1.9.0"' -DUSE_MEMORY_DB -DPSEUDO_PASSWD_FALLBACK='""' -O2 -g -D_GNU_SOURCE -c -o pseudo_wrappers.o pseudo_wrappers.c
cc -c -pipe -std=gnu99 -Wall -W -Wextra -Wno-deprecated-declarations -fPIC -D_LARGEFILE64_SOURCE -D_ATFILE_SOURCE -Wno-cast-function-type -Wno-nonnull-compare -fcommon -m32 -DPSEUDO_PREFIX='"/home/parallels/Downloads/freetz-ng/tools/build"' -DPSEUDO_SUFFIX='""' -DPSEUDO_BINDIR='"bin"' -DPSEUDO_LIBDIR='"lib"' -DPSEUDO_LOCALSTATEDIR='"var/pseudo"' -DPSEUDO_VERSION='"1.9.0"' -DUSE_MEMORY_DB -DPSEUDO_PASSWD_FALLBACK='""' -O2 -g pseudo_client.c
cc -c -pipe -std=gnu99 -Wall -W -Wextra -Wno-deprecated-declarations -fPIC -D_LARGEFILE64_SOURCE -D_ATFILE_SOURCE -Wno-cast-function-type -Wno-nonnull-compare -fcommon -m32 -DPSEUDO_PREFIX='"/home/parallels/Downloads/freetz-ng/tools/build"' -DPSEUDO_SUFFIX='""' -DPSEUDO_BINDIR='"bin"' -DPSEUDO_LIBDIR='"lib"' -DPSEUDO_LOCALSTATEDIR='"var/pseudo"' -DPSEUDO_VERSION='"1.9.0"' -DUSE_MEMORY_DB -DPSEUDO_PASSWD_FALLBACK='""' -O2 -g pseudo_ipc.c
cc: error: unrecognized command-line option ‘-m32’
make[2]: *** [Makefile:158: pseudo_wrappers.o] Error 1
make[2]: *** Waiting for unfinished jobs....
cc: error: unrecognized command-line option ‘-m32’
make[2]: *** [Makefile:131: pseudo_client.o] Error 1
cc: error: unrecognized command-line option ‘-m32’
make[2]: *** [Makefile:131: pseudo_ipc.o] Error 1
make[1]: *** [tools/make/pseudo-host/pseudo-host.mk:57: /home/parallels/Downloads/freetz-ng/tools/build/lib/libpseudo.so] Terminated
make: *** [Makefile:46: envira] Terminated
Any ideas?
I tried
make MACHINE=arm
as I read in another discussion that I might be an architecture issue. But it doesn't seem to be.