From: Matthias Maier <tamiko@43-1.org>
Date: Mon, 28 Feb 2022 11:03:29 +0000 (-0600)
Subject: CMake: require MPI 3.0
X-Git-Tag: v9.4.0-rc1~433^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F13461%2Fhead;p=dealii.git

CMake: require MPI 3.0
---

diff --git a/cmake/configure/configure_1_mpi.cmake b/cmake/configure/configure_1_mpi.cmake
index 07f1897fc8..4f1d6aad89 100644
--- a/cmake/configure/configure_1_mpi.cmake
+++ b/cmake/configure/configure_1_mpi.cmake
@@ -39,6 +39,15 @@ MACRO(FEATURE_MPI_FIND_EXTERNAL var)
       SET(${var} FALSE)
     ENDIF()
 
+    IF(MPI_VERSION VERSION_LESS "3.0")
+      MESSAGE(STATUS
+        "Could not find a sufficient MPI version: "
+        "Your MPI implementation does not support the MPI 3.0 standard.")
+      SET(MPI_ADDITIONAL_ERROR_STRING
+        "Your MPI implementation does not support the MPI 3.0 standard.\n")
+      SET(${var} FALSE)
+    ENDIF()
+
   ENDIF()
 ENDMACRO()