hello.err

$ voc -M hello.Mod

 GNU x86_64 target
not using voc.par file
hello.Mod  translating hello  main program    277
hello.c:11:8: warning: type specifier missing, defaults to 'int'
      [-Wimplicit-int]
export main(int argc, char **argv)
       ^~~~
1 warning generated.

clang  hello.c -static  -o hello  -fPIC -g -I /opt/voc-1.0/src/lib/system/freebsd/clang/x86_64 -I /opt/voc-1.0/lib/voc/obj   -lVishapOberon -L. -L/opt/voc-1.0/lib
hello.c:11:8: warning: type specifier missing, defaults to 'int'
      [-Wimplicit-int]
export main(int argc, char **argv)
       ^~~~
1 warning generated.

hello.Mod

MODULE hello;
IMPORT Out := Console;
BEGIN Out.String("hello world"); Out.Ln;
END hello.