[m-users.] mmc --debug and mdb usage problems

[Julien Fischer]

On Tue, 18 Oct 2022, Volker Wysk wrote:

> Am Dienstag, dem 18.10.2022 um 15:31 +0530 schrieb Razetime:
>> All the programs I have tried to compile are from here:
>> https://github.com/razetime/aoc/tree/main/16
>> Using the guide:
>> https://mercurylang.org/information/doc-release/mercury_user_guide/Quick-overview.html#Quick-overview
>> My installation was from the debian package repository, given here:
>> http://dl.mercurylang.org/deb/. My OS is Ubuntu 20.02 (fossa)
>> I would like to know if I am doing any steps wrong, or my install is
>> not correct.
>>
>> I have tried to compile and build a program with imported module,
>> which gives the following error:
>> $ mmc --debug --make a07
>> mercury_compile: error: the Mercury standard library cannot be found in grade
>>   `asm_fast.gc.debug'.
>>
>> mmc --debug a01 runs quietly with no output, and mdb ./a01 after that
>> just runs the program as is with no debugger controls appearing.
>
> Compiling for debugging isn't done with the "--debug" parameter, but by
> choosing a grade with debug support.
>
> Use this to list the installed grades:
>
> mmc --output-libgrades|sort

As of Mercury 22.01 you should use the --output-stdlib-grades option to
print the list of installed grades.  (The reason is that its output is
not affected by any options in Mercury.options files etc. where as the
output of --output-libgrades is.)

> Chose one with "debug" in it and specify it with "--grade" to the compiler.

Or with "decldebug" in it.

Julien.