From 8589d39d8eaad83ce9a856d81b42245d57bb1e18 Mon Sep 17 00:00:00 2001
From: Gavin Ridley <gavin.keith.ridley@gmail.com>
Date: Thu, 11 Mar 2021 09:37:06 -0500
Subject: [PATCH] improve clarity of phdf5 error message

---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3e0ff23cb2..8c92751e2a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -87,7 +87,9 @@ endif()
 find_package(HDF5 REQUIRED COMPONENTS C HL)
 if(HDF5_IS_PARALLEL)
   if(NOT MPI_ENABLED)
-    message(FATAL_ERROR "Parallel HDF5 must be used with MPI.")
+    message(FATAL_ERROR "Parallel HDF5 was detected, but the detected compiler,\
+     ${CMAKE_CXX_COMPILER}, does not support MPI. An MPI-capable compiler must \
+     be used with parallel HDF5.")
   endif()
   message(STATUS "Using parallel HDF5")
 endif()