From 3158d7aa2ed86aaf1fa802253c913de5e03c3d40 Mon Sep 17 00:00:00 2001
From: maier <maier@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Sat, 12 Oct 2013 19:18:42 +0000
Subject: [PATCH] Provide MPI version number (and OMPI version number as well)

git-svn-id: https://svn.dealii.org/branches/branch_port_the_testsuite@31210 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/cmake/configure/configure_1_mpi.cmake | 50 +++++++++++++++++++
 deal.II/cmake/setup_finalize.cmake            |  4 ++
 deal.II/doc/users/Config.sample               |  3 ++
 3 files changed, 57 insertions(+)

diff --git a/deal.II/cmake/configure/configure_1_mpi.cmake b/deal.II/cmake/configure/configure_1_mpi.cmake
index 5140848840..0d1050a8aa 100644
--- a/deal.II/cmake/configure/configure_1_mpi.cmake
+++ b/deal.II/cmake/configure/configure_1_mpi.cmake
@@ -82,6 +82,56 @@ MACRO(FEATURE_MPI_FIND_EXTERNAL var)
     ENDIF()
   ENDFOREACH()
 
+  #
+  # Manually assemble some version information:
+  #
+  IF(EXISTS ${MPI_INCLUDE_PATH}/mpi.h)
+    FILE(STRINGS "${MPI_INCLUDE_PATH}/mpi.h" MPI_VERSION_MAJOR_STRING
+      REGEX "#define.*MPI_VERSION")
+    STRING(REGEX REPLACE "^.*MPI_VERSION.*([0-9]+).*" "\\1"
+      MPI_VERSION_MAJOR "${MPI_VERSION_MAJOR_STRING}"
+      )
+    FILE(STRINGS "${MPI_INCLUDE_PATH}/mpi.h" MPI_VERSION_MINOR_STRING
+      REGEX "#define.*MPI_SUBVERSION")
+    STRING(REGEX REPLACE "^.*MPI_SUBVERSION.*([0-9]+).*" "\\1"
+      MPI_VERSION_MINOR "${MPI_VERSION_MINOR_STRING}"
+      )
+    SET(MPI_VERSION "${MPI_VERSION_MAJOR}.${MPI_VERSION_MINOR}")
+    IF("${MPI_VERSION}" STREQUAL ".")
+      SET(MPI_VERSION)
+      SET(MPI_VERSION_MAJOR)
+      SET(MPI_VERSION_MINOR)
+    ENDIF()
+
+    # OMPI specific version number:
+    FILE(STRINGS "${MPI_INCLUDE_PATH}/mpi.h" OMPI_VERSION_MAJOR_STRING
+      REGEX "#define.*OMPI_MAJOR_VERSION")
+    STRING(REGEX REPLACE "^.*OMPI_MAJOR_VERSION.*([0-9]+).*" "\\1"
+      OMPI_VERSION_MAJOR "${OMPI_VERSION_MAJOR_STRING}"
+      )
+    FILE(STRINGS "${MPI_INCLUDE_PATH}/mpi.h" OMPI_VERSION_MINOR_STRING
+      REGEX "#define.*OMPI_MINOR_VERSION")
+    STRING(REGEX REPLACE "^.*OMPI_MINOR_VERSION.*([0-9]+).*" "\\1"
+      OMPI_VERSION_MINOR "${OMPI_VERSION_MINOR_STRING}"
+      )
+    FILE(STRINGS "${MPI_INCLUDE_PATH}/mpi.h" OMPI_VERSION_RELEASE_STRING
+      REGEX "#define.*OMPI_RELEASE_VERSION")
+    STRING(REGEX REPLACE "^.*OMPI_RELEASE_VERSION.*([0-9]+).*" "\\1"
+      OMPI_VERSION_SUBMINOR "${OMPI_VERSION_RELEASE_STRING}"
+      )
+    SET(OMPI_VERSION
+      "${OMPI_VERSION_MAJOR}.${OMPI_VERSION_MINOR}.${OMPI_VERSION_SUBMINOR}"
+      )
+    IF("${OMPI_VERSION}" STREQUAL "..")
+      SET(OMPI_VERSION)
+      SET(OMPI_VERSION_MAJOR)
+      SET(OMPI_VERSION_MINOR)
+      SET(OMPI_VERSION_SUBMINOR)
+    ENDIF()
+
+  ENDIF()
+
+
   # Hide some variables:
   MARK_AS_ADVANCED(MPI_EXTRA_LIBRARY MPI_LIBRARY)
 
diff --git a/deal.II/cmake/setup_finalize.cmake b/deal.II/cmake/setup_finalize.cmake
index 8dd205b3b6..4c4fc377ff 100644
--- a/deal.II/cmake/setup_finalize.cmake
+++ b/deal.II/cmake/setup_finalize.cmake
@@ -208,6 +208,10 @@ FOREACH(_var ${_features})
         _detailed("#            TBB_VERSION = ${TBB_VERSION}\n")
       ENDIF()
 
+      IF(_feature MATCHES "MPI" AND DEFINED OMPI_VERSION)
+        _detailed("#            OMPI_VERSION = ${OMPI_VERSION}\n")
+      ENDIF()
+
       #
       # Print out ${_feature}_DIR:
       #
diff --git a/deal.II/doc/users/Config.sample b/deal.II/doc/users/Config.sample
index 4bcbbcbe20..7b4500bf2f 100644
--- a/deal.II/doc/users/Config.sample
+++ b/deal.II/doc/users/Config.sample
@@ -334,6 +334,9 @@
 # SET(MPI_CXX_INCLUDE_PATH "include directory for mpi" CACHE STRING "")
 # SET(MPI_CXX_COMPILE_FLAGS "..." CACHE STRING "")
 # SET(MPI_CXX_LINK_FLAGS "..." CACHE STRING "")
+# SET(MPI_VERSION "x.y" CACHE STRING "")
+# SET(MPI_VERSION_MAJOR "x" CACHE STRING "")
+# SET(MPI_VERSION_MINOR "y" CACHE STRING "")
 #
 # Additionally:
 #
-- 
2.39.5