Compiling multiple source files --- each file separately, or all together?

[Adam Wilson]

On Friday, 26 December 2025 at 10:44:21 UTC, David Given wrote:
> When compiling C or C++, and you have multiple source files, 
> you typically compile each source file independently into a .o 
> file and then link them together. This is either done manually 
> in the build script or automatically if you pass multiple 
> source files into the compiler program.

I was speaking with Walter a couple weeks ago and he thinks that 
future of DMD is unified compilation. There are a number of 
things the compiler can do when compiling all the source files at 
once that you just cannot do with independent compilation and 
Walter would like to be able to do those things.

So the general recommendation from Walter is unified compilation.