What does the error message "scons: *** Two environments with different actions were specified for the same target: sfpseudodepth" mean?

edit

The error message "scons: * Two environments with different actions were specified for the same target: sfpseudodepth" means that there are two different ways to build the target "sfpseudodepth" specified in different environments, and SCons is unable to decide which one to use. This can occur if there are conflicting build rules or specifications in different parts of the SCons configuration. To fix this error, the conflicting build rules should be identified and resolved, or the build should be modified to use only one environment for building the target.