Sloeber 4.3.3, partial recompiling on ESP8266 Arduino Core 3.0.0 not working

[SturmWolfgang]

Describe the bug
on ESP8266 Arduino Core 3.0.0 after a code change (in the main .ino file) the changes are not compiled.
I always have to "clean project" "rebuild project"

To Reproduce
this works, and is expected behavior for 3.0.0 also
1.) have ESP8266 Arduino Core 2.7.4 installed, and configured in the projects properties
2.) have a project with it, built it and flash it (currently it is an IOD-09Th, but hardware is not relevant, same on Huzzah)
3.) change a line of code
4.) built again (only changes are rebuild), so takes seconds, console output:

10:16:39 **** Incremental Build of configuration Release for project ESP8266 ****
"C:\\Programmieren\\Sloebe433\\arduinoPlugin\\tools\\make\\make" all 
'Building file: ..\sloeber.ino.cpp'
'Starting C++ compile'

5.) upload --> changes are included

this does not work:
1.) have ESP8266 Arduino Core 3.0.0 installed, and configured in the projects properties
2.) have a project with it, built it and flash it
3.) change a line of code
4.) built again , console output:

10:21:07 **** Incremental Build of configuration Release for project ESP8266 ****
"C:\\Programmieren\\Sloebe433\\arduinoPlugin\\tools\\make\\make" all 
make: *** No rule to make target 'C\:\Programmieren\Sloebe433\arduinoPlugin\packages\esp8266\hardware\esp8266\3.0.0\cores\esp8266/Arduino.h', needed by 'sloeber.ino.cpp.o'.  Stop.
"C:/Programmieren/Sloebe433/arduinoPlugin/tools/make/make all" terminated with exit code 2. Build might be incomplete.

5.) upload --> changes are not included

workaround
1.) clean project
2.) rebuild project (takes minutes as all the core is rebuild)

Desktop:
-Windows 10 Home, 21H1

Any comments how to rebuild projects with core 3.0.0 without rebuilding the entire one (and waiting minutes) are appreciated
Is there a way to "clean" just a single file to reduce rebuild time?

[jantje]

your output shows a incorrect filename and the build fails. So partial recompile starts but fails
C:\Programmieren\Sloebe433\arduinoPlugin\packages\esp8266\hardware\esp8266\3.0.0\cores\esp8266/Arduino.h

Have a look at what is inside sloeber.ino.cpp

[uzi18]

Path is wrong: 'C\:\Programmieren\Sloebe433\arduinoPlugin\packages\esp8266\hardware\esp8266\3.0.0\cores\esp8266/Arduino.h'

[SturmWolfgang]

thanks for the quick reply, unfortunately the answers do not help, as I did nothing with the path

I stripped the problem down to the absolute minimum:
1.) Create a new empty sketch with Core 3.0.0, and compile it

• so empty setup, empty loop, it will be built successfully

2.) just insert some line e.g. "Serial.begin(9600);" in setup and rebuilt by clicking the check mark from the Arduino toolbar
error as above (10:21:07), no rebuilt

• did not touch sloeber.ino.cpp, which looks good to me:

#include "Arduino.h"
#include "Arduino.h"

void setup() ;
void loop() ;

#include "ESP8266_IOD9TH_Core3.ino"

• did not change any path

[uzi18]

Generated makefile has some errors because path mentioned in error looks wrong

[hreintke]

See issue #1198

Root cause is a bug in the GCC 10 compiler which is included in the ESP8266 3.0 release.

Will probably also be fixed when esp8266/Arduino@74d675c is included (is in master but not yet in a released version).

[jantje]

@hreintke
Thanks :-) . I had already forgotten about that issue
I'm closing this as a duplicate of #1198
Please reopen with comments when this is not correct