System.ex monotonic_time/1 system_time/1

[petermm]

Carbon copy from elixir with :native time unit removed, as it's not supported by current erlang implementation.

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

[petermm]

this is failing in interesting ways...

[pguyot]

Unfortunately, the build system requires that the module works through the compilation process. So we might need native unit. I had a similar issue with the elixir_config module that is used by mix. This is quite a mess. I wonder if we can use some bootstrapping options when compiling Elixir code....

[petermm]

adding @compile {:autoload, false} makes compilation succeed, but let me verify it actually works..

[petermm]

this is now ready.

important lesson in using @compile {:autoload, false} as it would otherwise fail doing compilation.

eg: https://github.com/petermm/AtomVM/actions/runs/10983957069/job/30493963932

[ 82%] Compiling System.ex
** (UndefinedFunctionError) function System.convert_time_unit/3 is undefined or private
    (elixir 1.17.3) System.convert_time_unit(138870005, :native, :millisecond)
    (elixir 1.17.3) lib/kernel/parallel_compiler.ex:786: Kernel.ParallelCompiler.maybe_warn_long_compilation/2
    (elixir 1.17.3) lib/kernel/parallel_compiler.ex:809: Kernel.ParallelCompiler.maybe_log_file_profile/2
    (elixir 1.17.3) lib/kernel/parallel_compiler.ex:706: Kernel.ParallelCompiler.wait_for_messages/8
    (elixir 1.17.3) lib/kernel/parallel_compiler.ex:292: Kernel.ParallelCompiler.spawn_workers/5
    (elixir 1.17.3) lib/kernel/parallel_compiler.ex:247: Kernel.ParallelCompiler.spawn_workers/3
    (elixir 1.17.3) lib/kernel/cli.ex:512: anonymous fn/2 in Kernel.CLI.process_command/2
Runtime terminating during boot ({undef,[{'Elixir.System',halt,[1],[]},{init,start_it,1,[]},{init,start_em,1,[]},{init,do_boot,3,[]}]})

Crash dump is being written to: erl_crash.dump...done
make[2]: *** [libs/exavmlib/lib/CMakeFiles/exavmlib_beams.dir/build.make:328: libs/exavmlib/lib/beams/Elixir.System.beam] Error 1
make[1]: *** [CMakeFiles/Makefile2:2139: libs/exavmlib/lib/CMakeFiles/exavmlib_beams.dir/all] Error 2
make: *** [Makefile:136: all] Error 2