magma: fix linker errors for builds without cusolver (kokkos#2181)

* magma: fix linker errors for builds without cusolver

* BatchedGemm test: workaround testing cublas+magma

- temporary workaround to skip magma test when cublas enabled to avoid issues like kokkos#2177

batched/dense/unit_test/Test_Batched_BatchedGemm.hpp

@@ -229,7 +229,11 @@ void impl_test_batched_gemm(const int N, const int matAdim1, const int matAdim2,
     ASSERT_EQ(batchedGemmHandleCublas.vecLen, 0);
 #endif
 
-#if defined(KOKKOSKERNELS_ENABLE_TPL_MAGMA)
+    // FIXME temporary workaround to run this magma test only if cublas is not
+    // enabled the design of the BatchedGemmHandle currently does not allow
+    // simultanous testing in this way. See issue #2177
+#if defined(KOKKOSKERNELS_ENABLE_TPL_MAGMA) && \
+    !defined(KOKKOSKERNELS_ENABLE_TPL_CUBLAS)
     magma_queue_t magma_queue;
     BatchedGemmHandle batchedGemmHandleMagma(magma_queue, GemmTplAlgos::MAGMA,
                                              0, 0);

lapack/CMakeLists.txt

@@ -34,6 +34,12 @@ IF (KOKKOSKERNELS_ENABLE_TPL_CUSOLVER)
   )
 ENDIF()
 
+IF (KOKKOSKERNELS_ENABLE_TPL_MAGMA)
+  LIST(APPEND SOURCES
+   lapack/tpls/KokkosLapack_Magma_tpl.cpp
+  )
+ENDIF()
+
 ##################
 #                #
 # ETI generation #

lapack/tpls/KokkosLapack_Cuda_tpl.cpp

@@ -16,4 +16,3 @@
 #include <Kokkos_Core.hpp>
 #include <KokkosKernels_config.h>
 #include <KokkosLapack_Cuda_tpl.hpp>
-#include <KokkosLapack_Magma_tpl.hpp>

lapack/tpls/KokkosLapack_Magma_tpl.cpp

@@ -0,0 +1,18 @@
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 4.0
+//       Copyright (2022) National Technology & Engineering
+//               Solutions of Sandia, LLC (NTESS).
+//
+// Under the terms of Contract DE-NA0003525 with NTESS,
+// the U.S. Government retains certain rights in this software.
+//
+// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
+// See https://kokkos.org/LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//@HEADER
+#include <Kokkos_Core.hpp>
+#include <KokkosKernels_config.h>
+#include <KokkosLapack_Magma_tpl.hpp>