My ESP32 project has grown quite large and is now taking a long time to build.
I think I have all the caching enabled but even with that it is still taking over 2'40 minutes to rebuild, a clean build takes over 5 minutes.

I'm running on a pc with a Core i9 processor and SSD hard drive and plenty of memory.

I recorded times as follow:
From a clean build
Deep search: 3'49
Libraries: 1'13
Code: 0'18

Rebuild:
Deep search: 2'30
Libraries: 0'03
Code: 0'18

Any suggestions on how to improve this?
I've emailed output from a clean build and a rebuild.

Here it is..

# Inverter32 build property overrides
#

network.password=j3ss1camINV32
network.auth_upload=yes
network.port=3232

# Force LittleFS Usage 
#runtime.tools.mkspiffs.path=notTheToolYoureLookingFor 
sp32\tools\mklittlefs\3.0.0-gnu12-dc7f933

tools.esptool_py.network_cmd.windows="{runtime.platform.path}/tools/espota.exe"

# Increment version before build
recipe.hooks.sketch.prebuild.1.pattern=cmd.exe /c {build.project_path}\version.bat {build.project_path}\fwversion.h

#Copy bin file to directory with version number
recipe.objcopy.hex.pattern.1.pattern=cmd.exe /c {build.project_path}\copyme.bat {build.project_path}\FWVersion.h {vm.last.buildpath}\{build.project_name}.bin s:\temp\ "{menu.fsupload.littlefs.runtime.tools.mklittlefs.path}\mklittlefs.exe" {build.project_path}\data

Yes, that was it.

It was only used in one place but was in the header for the whole project.
Moving it to where it is actually used has reduced the compile time to around a minute.

Thanks - now I'll drink less coffee as I won't have time to make a cup while compiling!