can't build firmware on linux due to make: m68k-elf-gcc: Command not found about rosco_m68k

[quarterturn]

review of config.log showed gcc-9.3.0 having an issue with '-qversion' option in the gcc makefile. I instead got the source of gcc-9.3.0 and followed the same build process.

make now fails at:
ake[2]: Entering directory '/home/quarterturn/Downloads/m68k-toolchain/build-gcc-9.3.0-m68k/gcc'
g++ -c -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -DGENERATOR_FILE -fno-PIE -I. -Ibuild -I../../gcc-9.3.0/gcc -I../../gcc-9.3.0/gcc/build -I../../gcc-9.3.0/gcc/../include -I../../gcc-9.3.0/gcc/../libcpp/include
-o build/genmodes.o ../../gcc-9.3.0/gcc/genmodes.c
/home/quarterturn/opt/cross/m68k-elf/bin/as: unrecognized option '--64'

[quarterturn]

I looked at issue #5 of the homebrew-toolchain git and started over with the homebrew method. I had to 'brew edit vasm-all' and make the following change:

sha256 "9ae0b37bca11cae5cf00e4d47e7225737bdaec4028e4db2a501b4eca7df8639d"

Only other thing I had to fix was ' the pstopdf error via sudo cp /usr/bin/ps2pdf /usr/bin/pstopdf'
The firmware now can be built.