Merge pull request #4250 from jsquyres/pr/v2.x/disable-hwloc-cuda-when-relevant

v2.x: disable hwloc CUDA support when relevant

Author: jsquyres

opal/mca/hwloc/hwloc1112/configure.m4

@@ -111,6 +111,17 @@ AC_DEFUN([MCA_opal_hwloc_hwloc1112_CONFIG],[
     enable_libxml2=no
     enable_xml=yes
 
+    # GL and OpenCL OS devices aren't used in OMPI
+    enable_gl=no
+    enable_opencl=no
+
+    # Per https://github.com/open-mpi/ompi/pull/4257, ALWAYS
+    # disable cuda support
+    enable_cuda=no
+
+    # Open MPI currently does not use hwloc's NVML support
+    enable_nvml=no
+
     # hwloc checks for compiler visibility, and its needs to do
     # this without "picky" flags.
     opal_hwloc_hwloc1112_save_cflags=$CFLAGS