Use set_target_properties to customize the RUNTIME_OUTPUT_DIRECTORY
set_target_properties( yourexe PROPERTIES RUNTIME_OUTPUT_DIRECTORY E:/parsec/bin/ )
As an alternative, modifying the CMAKE_RUNTIME_OUTPUT_DIRECTORY allows you to specify this for all targets in the cmake project. Take care that you modify the CMAKE_LIBRARY_OUTPUT_DIRECTORY as well when you build dlls.
set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )
c++ - How to change the executable output directory for Win32 builds, in CMake? - Stack Overflow http://stackoverflow.com/questions/13556885/how-to-change-the-executable-output-directory-for-win32-builds-in-cmake