# retrieve the package root directory (xxx_ROOT_DIR)
# upCount : number of times we have to go up from the path <referenceVariable>
# to obtain the package root directory.
+# If this is a path to a file, going up one time gives the directory containing the file
+# going up 2 times gives the parent directory.
#
-# For example: SALOME_FIND_PACKAGE_DETECT_CONFLICTS(SWIG SWIG_EXECUTABLE 2)
+# For example: SALOME_FIND_PACKAGE_DETECT_CONFLICTS(SWIG SWIG_EXECUTABLE 2)
+# with SWIG_EXECUTABLE set to '/usr/bin/swig'
+# will produce '/usr'
#
# Generic detection (and conflict check) procedure for package XYZ:
# 1. Load a potential env variable XYZ_ROOT_DIR as a default choice for the cache entry XYZ_ROOT_DIR
