Searching help to build LibreOffice

Hi !

I am trying to build LibreOffice and
make returns an error :

Failures !!!
Run: 222   Failure total: 1   Failures: 1   Errors: 0
warn:legacy.osl:21402:1:unotools/source/config/configmgr.cxx:167: 
OSL_ASSERT: items_.empty()

Error: a unit test failed, please do one of:

export DEBUGCPPUNIT=TRUE            # for exception catching
export CPPUNITTRACE="gdb --args"    # for interactive debugging on Linux
export CPPUNITTRACE="\"[full path to devenv.exe]\" /debugexe" # for 
interactive debugging in Visual Studio
export VALGRIND=memcheck            # for memory checking

and retry using: make CppunitTest_sc_opencl_test

make[1]: *** 
[/home/MyLibreOffice/core/workdir/CppunitTest/sc_opencl_test.test] Erreur 1
make: *** [build] Erreur 2

Thanks for help !