casa-mp-base

--- Modules/Platform/Darwin.cmake.orig

+++ Modules/Platform/Darwin.cmake

@@ -70,7 +70,8 @@

     set(_sdk_ver "${CMAKE_MATCH_1}")

   elseif("${_CMAKE_OSX_SYSROOT_ORIG}" MATCHES "^macosx([0-9]+\\.[0-9]+)$")

     set(_sdk_ver "${CMAKE_MATCH_1}")

-  elseif("${_CMAKE_OSX_SYSROOT_ORIG}" STREQUAL "/")

+  elseif("${_CMAKE_OSX_SYSROOT_ORIG}" STREQUAL "/" OR

+         "${_CMAKE_OSX_SYSROOT_ORIG}" STREQUAL "")

     set(_sdk_ver "${_CURRENT_OSX_VERSION}")

   else()

     message(FATAL_ERROR