Use MessageStringCollector class to construct error messages

[alexxy/gromacs.git] / src / gromacs / nbnxm / nbnxm.cpp

diff --git a/src/gromacs/nbnxm/nbnxm.cpp b/src/gromacs/nbnxm/nbnxm.cpp
index 89ad3ea294e176452d937c1bda46ece6c772638e..361483b84c1e529830742e6af993f73e0a27655a 100644 (file)
--- a/src/gromacs/nbnxm/nbnxm.cpp
+++ b/src/gromacs/nbnxm/nbnxm.cpp
@@ -48,6 +48,7 @@
 #include "gromacs/domdec/domdec_struct.h"
 #include "gromacs/nbnxm/atomdata.h"
 #include "gromacs/timing/wallcycle.h"
+#include "gromacs/utility/message_string_collector.h"
 
 #include "nbnxm_gpu.h"
 #include "pairlistsets.h"
@@ -242,4 +243,20 @@ void nonbonded_verlet_t::atomdata_init_copy_x_to_nbat_x_gpu() const
     Nbnxm::nbnxn_gpu_init_x_to_nbat_x(pairSearch_->gridSet(), gpu_nbv);
 }
 
+bool buildSupportsNonbondedOnGpu(std::string* error)
+{
+    gmx::MessageStringCollector errorReasons;
+    // Before changing the prefix string, make sure that it is not searched for in regression tests.
+    errorReasons.startContext("Nonbonded interactions on GPUs are not supported in:");
+    errorReasons.appendIf(GMX_DOUBLE, "Double precision build of GROMACS");
+    errorReasons.appendIf(!GMX_GPU, "Non-GPU build of GROMACS.");
+    errorReasons.finishContext();
+    if (error != nullptr)
+    {
+        *error = errorReasons.toString();
+    }
+    return errorReasons.isEmpty();
+}
+
+
 /*! \endcond */