Building with ASM Sources

[mesheets]

The original Makefile utilized (optional?) platform-specific "ASM_SOURCES" when building.

For at least x86_64, the included assembly source file might no longer work with the latest build tools. The error message states to use the "-fPIC" option, but that has no effect on user-provided assembly files.

Additionally, there is no support for other platforms, such as ARM/Raspberry Pi.

Use of ASM_SOURCES appears to be optional, but it is not fully clear what difference might be caused by not having ASM_SOURCES.