From c0ecf8db6de97ce7e95a6d5e74fa70de05326b83 Mon Sep 17 00:00:00 2001
From: abn <adrien.bruneton@cea.fr>
Date: Thu, 9 Nov 2023 21:12:20 +0100
Subject: [PATCH] Expose MPI configuration in CMake export file.

---
 CMakeLists.txt             | 5 +++++
 MEDCouplingConfig.cmake.in | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 915ae7e38..914f21b4a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -173,6 +173,11 @@ ENDIF(MEDCOUPLING_BUILD_TESTS)
 
 IF(MEDCOUPLING_USE_MPI)
   FIND_PACKAGE(SalomeMPI REQUIRED)
+  # Used when exporting configuration:
+  SET(MEDCOUPLING_CXX_COMPILER "${CMAKE_CXX_COMPILER}")
+  SET(MEDCOUPLING_MPI_CXX_COMPILER "${MPI_CXX_COMPILER}")  # Might not always be set even if MPI there ...
+  SET(MEDCOUPLING_MPI_CXX_LIBRARIES "${MPI_CXX_LIBRARIES}")  
+
   ADD_DEFINITIONS("-DHAVE_MPI")
   SALOME_ADD_MPI_TO_HDF5()
   IF(MEDCOUPLING_PARTITIONER_PARMETIS)
diff --git a/MEDCouplingConfig.cmake.in b/MEDCouplingConfig.cmake.in
index f3f817087..cadd265e8 100644
--- a/MEDCouplingConfig.cmake.in
+++ b/MEDCouplingConfig.cmake.in
@@ -113,6 +113,11 @@ ENDIF(MEDCOUPLING_ENABLE_PYTHON)
 SET(MEDCOUPLING_INSTALL_RES "@MEDCOUPLING_INSTALL_BINS@")
 SET(MEDCOUPLING_INSTALL_DOC "@MEDCOUPLING_INSTALL_BINS@")
 
+# MPI configuration used when compiling MEDCoupling (if relevant)
+SET(MEDCOUPLING_CXX_COMPILER "@MEDCOUPLING_CXX_COMPILER@")
+SET(MEDCOUPLING_MPI_CXX_COMPILER "@MEDCOUPLING_MPI_CXX_COMPILER@")
+SET(MEDCOUPLING_MPI_CXX_LIBRARIES "@MEDCOUPLING_MPI_CXX_LIBRARIES@")
+
 # Exposed MEDCoupling targets:
 SET(MEDCoupling_interpkernel interpkernel)
 SET(MEDCoupling_medcouplingcpp medcouplingcpp)
-- 
2.39.2