Still can't use the plugin

[tolezk]

I had reported the zephyrproject-rtos/zephyr#28053 in September 2020.

But I still facing the same errors

Errors occurred during the build.
Errors running builder 'Zephyr Application Builder' on project 'Sticky'.
java.lang.NullPointerException

while the build log from the console looks like

----- Generating CMake files for board nrf52dk_nrf52832 in build
d:\tools\windows\msys64\mingw64\bin\cmake.exe -DBOARD=nrf52dk_nrf52832 -G Ninja -DCMAKE_EXPORT_COMPILE_COMMANDS=ON D:\projects\Sticky\Sticky
-- Application: D:/projects/Sticky/Sticky
-- Zephyr version: 2.4.0 (D:/projects/Sticky/zephyr)
-- Found west (found suitable version "0.8.0", minimum required is "0.7.1")
-- Board: nrf52dk_nrf52832
-- Cache files will be written to: C:\Users\ai\AppData\Local/.cache/zephyr
-- Found dtc: D:/tools/windows/msys64/usr/bin/dtc.exe (found suitable version "1.6.0", minimum required is "1.4.6")
-- Found toolchain: gnuarmemb (D:/tools/windows/GNU Arm Embedded Toolchain/9.2.1 2019-q4)
-- Found BOARD.dts: D:/projects/Sticky/zephyr/boards/arm/nrf52dk_nrf52832/nrf52dk_nrf52832.dts
-- Generated zephyr.dts: D:/projects/Sticky/Sticky/build/zephyr/zephyr.dts
-- Generated devicetree_unfixed.h: D:/projects/Sticky/Sticky/build/zephyr/include/generated/devicetree_unfixed.h
Parsing D:/projects/Sticky/zephyr/Kconfig
Loaded configuration 'D:/projects/Sticky/Sticky/build/zephyr/.config'
No change to configuration in 'D:/projects/Sticky/Sticky/build/zephyr/.config'
No change to Kconfig header in 'D:/projects/Sticky/Sticky/build/zephyr/include/generated/autoconf.h'
-- Configuring done
-- Generating done
-- Build files have been written to: D:/projects/Sticky/Sticky/build
----- Done generating CMake files for board nrf52dk_nrf52832 in build

Here is my context:
Eclipse: 2020-09 (4.17.0)
Plugin: 0.2.99.202009250453
Java: 14.0.2

Due to limitations, I can't attach the full config of my Eclipse, so let me know if you need extra info to fix the issue.

[tolezk]

Some additional info from log:

!ENTRY org.eclipse.core.resources 4 2 2021-01-28 15:29:37.379
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
!STACK 0
java.lang.NullPointerException
	at org.eclipse.core.internal.preferences.EclipsePreferences.put(EclipsePreferences.java:860)
	at org.eclipse.ui.preferences.ScopedPreferenceStore.putValue(ScopedPreferenceStore.java:455)
	at org.zephyrproject.ide.eclipse.core.build.ZephyrApplicationBuildConfiguration.parseCMakeCache(ZephyrApplicationBuildConfiguration.java:632)
	at org.zephyrproject.ide.eclipse.core.build.ZephyrApplicationBuildConfiguration.cmakeBuild(ZephyrApplicationBuildConfiguration.java:324)
	at org.zephyrproject.ide.eclipse.core.build.ZephyrApplicationBuildConfiguration.build(ZephyrApplicationBuildConfiguration.java:366)
	at org.zephyrproject.ide.eclipse.core.ZephyrApplicationBuilder.build(ZephyrApplicationBuilder.java:84)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:832)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
	at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:515)
	at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:412)
	at org.eclipse.ui.actions.BuildAction$1.runInWorkspace(BuildAction.java:291)
	at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:42)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

!ENTRY org.eclipse.core.resources 4 75 2021-01-28 15:29:37.380
!MESSAGE Errors occurred during the build.
!SUBENTRY 1 org.zephyrproject.ide.eclipse.core 4 75 2021-01-28 15:29:37.381
!MESSAGE Errors running builder 'Zephyr Application Builder' on project 'Sticky'.
!STACK 0
java.lang.NullPointerException
	at org.eclipse.core.internal.preferences.EclipsePreferences.put(EclipsePreferences.java:860)
	at org.eclipse.ui.preferences.ScopedPreferenceStore.putValue(ScopedPreferenceStore.java:455)
	at org.zephyrproject.ide.eclipse.core.build.ZephyrApplicationBuildConfiguration.parseCMakeCache(ZephyrApplicationBuildConfiguration.java:632)
	at org.zephyrproject.ide.eclipse.core.build.ZephyrApplicationBuildConfiguration.cmakeBuild(ZephyrApplicationBuildConfiguration.java:324)
	at org.zephyrproject.ide.eclipse.core.build.ZephyrApplicationBuildConfiguration.build(ZephyrApplicationBuildConfiguration.java:366)
	at org.zephyrproject.ide.eclipse.core.ZephyrApplicationBuilder.build(ZephyrApplicationBuilder.java:84)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:832)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
	at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:515)
	at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:412)
	at org.eclipse.ui.actions.BuildAction$1.runInWorkspace(BuildAction.java:291)
	at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:42)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

[mczerski]

I don't know if this is the same issue as mine but at least I have the same error in .metadata/.log file.
I found out that the plugin requires that CMAKE_C_COMPILER and CMAKE_CXX_COMPILER variable be defined in CMaceCache.txt with 'FILEPATH=' prefix like this:

CMAKE_C_COMPILER:FILEPATH=/usr/bin/arm-none-eabi-gcc

But in my CMakeCache.txt file generated by the plugin those variables are defined with 'STRING=' prefix:

CMAKE_C_COMPILER:STRING=/usr/bin/arm-none-eabi-gcc

Changing the CMakeCache.txt file fixes my issue. I'm using cmake version 3.19.3. And I set up the project with GNU ARM embedded toolchain.

[pasurb]

I have the same problem. Even after using the fix stated by @mczerski the error remains the same. It looks like the plugin resets the value in the "CMakeCache.txt".

[OortJacek]

Still cannot build any project with the Eclipse plugin, even though the command line build works fine.

Version: 2021-03 (4.19.0)
Build id: 20210312-0638
OS: Windows 10, v.10.0, x86_64 / win32
Java version: 11.0.9
Zephyr Version: 0.2.99.202009250453

[mmurty]

I am also facing the same issue. Does anyone know a workaround for this issue?

OS: Ubuntu 20.04
Eclipse Plugin version: 0.2.99.202009250453
openjdk version "16.0.1" 2021-04-20
Zephyr Kernel Version: 2.7.0.0-rc1

[oeah2]

For me the solution of mczerski worked out.

[embucla]

I had the same Issue, the solution to change the CMaceCache.txt works fine for me.
The Problem does not appear for me if I downgrade cmake to 3.17.0 or lower, unfortunately the newest zephyr version 2.7.99 requires cmake 3.20.0

[Burt-Silverman]

It does not work for me either. Even using the mczerski fix, but a newer version of cmake than 3.17.0.