[Lazarus] Multi-threading support in IDE

[Florian Klaempfl]

Graeme Geldenhuys schrieb:
> Vincent Snijders wrote:
>>
>> Yes, it is more efficient. The fp ide also doesn't create a new process.
> 
> Interesting, I'll take a peak at that.
> 
> 
>> The disadvantage of using the same process is that the coupling is
>> much tighter: No easy switching between compiler versions, and
>> crashing the compiler crashes the IDE.
> 
> Can somebody that is more familiar with the internals of the Lazarus IDE
> tell me, would it be hard to implement the IDE with FPC built in,

Probably simple. The compiler is started by the compile function in
fpc/compiler/compiler.pas and takes simply a command line arguments. You
need to set some hooks though to catch messages, see e.g.
fpc/ide/fpcompile.pas (especially DoCompile starting at 868) and
fpc/ide/fpintf.pas.