IDE 1.6.4 re-compiling all built-in libraries

Using Arduino IDE 1.x
1

When I first launch the IDE and compile my sketch, every single built in library for the Arduino is compiled. If I compile again the IDE is able to find and use the previously compiled libraries, but if I close and restart, every single library is re-compiled. That first compile after restart takes from between 10 to 15 minutes. I assume I need to link in the pre-compiled library paths somehow. Or I managed to install this incorrectly.

All suggestions are welcome. Thanks.

I'm running on windows 7.

2

Restarting gives the IDE a new temp location for compiling, so the contents is re-compiled in full.

10 minutes is huge even for slow machines, how long does a 'quick' compile take of the initial bare minimum sketch. Try disabling your antivirus apps and retrying. Each AV app will scan the files slowing the process down.

Putting the zip file version of the IDE on an external HDD with caching enabled helps too.