SLF4J: Failed to load class at Eclipse

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Using win10, Eclipse June 2020 C++ IDE, jdk-13.0.2, IAR plugin. I have a project that contains several sub-projects and it doesn’t compile using the command line (eclipsec.exe).

The running command

C:eclipseeclipsec.exe -nosplash --launcher.suppressErrors -application org.eclipse.cdt.managedbuilder.core.headlessbuild  -no-indexer -data . -import lib1 -import libDsp -build PrjSystem/Debug

The result is that libDsp is not compiled.

The log’s output:

Adding appender for logfile C:work.metadataIAR-plugins.log
Opening 'LibDsp'.
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See for further details.
Opening 'Lib1'.
Opening 'Lib2'.
Warning: Nashorn engine is planned to be removed from a future JDK release

Why LibDsp isn’t created?

How to solve this SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". issue? (The solution of pom.xml doesn’t work because it’s not Java IDE)


The project didn’t compile because some of the files were “locked”.
Example of a locked file: Error[Ms003]: could not open file "Componentsfolderfile.o" for writing

After removing Eclipse .metadata folder or the specific file .metadata.pluginsorg.eclipse.core.resources.safetableorg.eclipse.core.resources, the files were freed.

slf4j is not related to this problem.

Source: stackoverflow