Ida 5.x/6.x support about retdec-idaplugin

[s3rvac]

@PeterMatula What do you think about this?

[PeterMatula]

Well, it could be done, but the answer to Any reason not to create a bunch of macros is:

• a bunch of macros
• a big conditional compilation blob

@ladislav-zezula have some IDA plugins like this, but when he suggested I could do the same, I said: HELL NO. I'm afraid of increased code complexity, i.e. more time and trouble of moving forward. Also, more trouble with potential issues - we don't even currently have IDA 5.x/6.x to reproduce problems when they occur.

All of this could be dealt with of course, but I think the biggest question is how widespread the IDA 6.x usage is nowadays - i.e. is it even worth it? I don't know.

Soft NO for me at the moment.

[ladislav-zezula]

Most problematic for maintaining backward compatibility in IDA is that Hex-Rays doesn't really keep the API backward compatible. API names change, API parameters change, also the layout of the structures change.

Basically the only way to deal with it is to create a wrapper module for each IDA version with API incompatible with the other versions. I've been maintaining a debugger plugin for IDA 6.60 to 7.03 and it's a pain in the butt.

[PeterMatula]

This is no longer possible, the new plugin version 1.0 will require IDA SDK 7.5.