GNU Modula-2 installation problem on Ubuntu

[Simon Dash]

It occurred to me that the program file might need the same name as the module name. So I renamed the file to Hello.mod and it does eliminate two errors but still does not link:

~/code/m2> cp hello_world.mod Hello.mod

~/code/m2> gm2-11 Hello.mod 

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/m2/m2pim/libm2pim.so: undefined reference to `RTco_select'

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/m2/m2pim/libm2pim.so: undefined reference to `RTco_initSemaphore'

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/m2/m2pim/libm2pim.so: undefined reference to `RTco_wait'

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/m2/m2pim/libm2pim.so: undefined reference to `RTco_signal'

collect2: error: ld returned 1 exit status

~/code/m2> gm2-12 Hello.mod

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined reference to `RTco_select'

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined reference to `RTco_initSemaphore'

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined reference to `RTco_wait'

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined reference to `RTco_signal'

collect2: error: ld returned 1 exit status