The debug mode is set with the environment LYX_DEBUG_LATEX
$ export LYX_DEBUG_LATEX=1
The downside: From time to time the need to remove the superfluous dirs
$ cd build-dir
$ find autotests/out-home -name AbC_\* | xargs rm -rf
else()
string(COMPARE NOTEQUAL ${_err} 0 _erg)
endif()
-execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory "${TempDir}")
+
+if ($ENV{LYX_DEBUG_LATEX})
+ # Do not remove temporary files if one wants to examine them
+ # for example if setting the env-var LYX_DEBUG_LATEX
+ # This needs a remove all temp-dirs from time to time
+ # $ cd build-dir
+ # $ find autotests/out-home -name AbC_\* | xargs rm -rf
+else()
+ execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory "${TempDir}")
+endif()
if(_TestResultMessage)
message(STATUS "Msg Summary:")
foreach(_l ${_TestResultMessage})