Compilation on Mac

[PhVerkerk]

I had difficulties in compiling the sources on my different Mac (the first is 13 years old, while the second is 1 year old). I obviously followed the instructions in the README of https://github.com/perseids-tools/morpheus (many thanks to Zakary; it may be useful to repeat them here too) even though I do not fully understand them.

cd src/
make clean
CFLAGS='-std=gnu89 -Wno-return-type -Wno-implicit-function-declaration' make LOADLIBES='-ll'
make install

However, it was not enough : ld (the linker) had some problems in linking the *.a files. I have solved the problem by killing the various *.a files that already exist.
It may be a good idea to remove these *.a files in the "clean" step of each makefile.

clean:
	rm -f *.o

should become

clean:
	rm -f *.o *.a

or something similar.