message: Embree can be directly found via the install/build directory since v2.15
diff: @@ -45,9 +45,9 @@ macro(ospray_find_embree EMBREE_VERSION_REQUIRED)
  message(FATAL_ERROR
  "We did not find Embree installed on your system. OSPRay requires"
  " an Embree installation >= v${EMBREE_VERSION_REQUIRED}, please"
  - " download and extract Embree or compile Embree from source, then"
  - " set the 'embree_DIR' variable to"
  - " <embree-install-dir>/lib/cmake/embree-<version>.")
  + " download and extract Embree (or compile Embree from source), then"
  + " set the 'embree_DIR' variable to the installation (or build)"
  + " directory.")
  else()
  message(STATUS "Found Embree v${EMBREE_VERSION}: ${EMBREE_LIBRARY}")
  endif()
  