try_compile(HAVE_PROCESSOR_NUMBER ${CMAKE_BINARY_DIR} "${CMAKE_SOURCE_DIR}/cmake/TestWinProcNum.c")
include(FindThreads)
+
+if(CMAKE_USE_WIN32_THREADS_INIT AND NOT HAVE_PROCESSOR_NUMBER)
+ message(WARNING "Incomplete Windows Processor Group API. If you want Gromacs to be able to set thread affinity, choose a Mingw distribution with a complete API (e.g. Mingw-w64).")
+endif()
+
if (CMAKE_USE_WIN32_THREADS_INIT AND HAVE_PROCESSOR_NUMBER)
set(THREAD_WINDOWS 1)
set(THREAD_LIB)