Re: f951: internal compiler error: Illegal instruction: 4 when installing packages

Thank you very much for your input Andrew!

The CPU I am using is an Intel Core 2 Duo with 2.66 GHz in a MacBook Pro 5,3
running macOS 10.15.7.

I have just tried to build gcc from source. However, it results in an error
looking the following:

/==> make BOOT_LDFLAGS=-Wl,-headerpad_max_install_names
Last 15 lines from /Users/Manuel/Library/Logs/Homebrew/gcc/02.make:
/bin/sh ../../gcc/../move-if-change tmp-opinit.h insn-opinit.h
/bin/sh ../../gcc/../move-if-change tmp-opinit.c insn-opinit.c
echo timestamp > s-opinit
build/genattrtab ../../gcc/common.md ../../gcc/config/i386/i386.md
insn-conditions.md \
		-Atmp-attrtab.c -Dtmp-dfatab.c -Ltmp-latencytab.c
build/genautomata ../../gcc/common.md ../../gcc/config/i386/i386.md \
	  insn-conditions.md > tmp-automata.c
make[3]: *** [s-attrtab] Illegal instruction: 4
make[3]: *** Waiting for unfinished jobs....
/bin/sh ../../gcc/../move-if-change tmp-automata.c insn-automata.c
echo timestamp > s-automata
rm gcc.pod
make[2]: *** [all-stage1-gcc] Error 2
make[1]: *** [stage1-bubble] Error 2
make: *** [all] Error 2

READ THIS: https://docs.brew.sh/Troubleshooting

These open issues may also help:
i686-elf-gcc, x86_64-elf-gcc: update/add license
https://github.com/Homebrew/homebrew-core/pull/74919
gcc 10.3.0 https://github.com/Homebrew/homebrew-core/pull/74843/

Again, the illegal instruction error is found. 

I am not confident regarding the possibility of trying the Octave.app due to
the fact that my goal is to use Dynare in combination with Octave. On the
website  https://www.dynare.org/download/ <https://www.dynare.org/download/>  
it states explicitly that I have to use Homebrew. Do you have some more
information whether it is possible to use Dynare with Octave when using the
Octave.app build? If so, I am willing to try.



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