improve PETSc compiler mismatch error messages.

git-svn-id: https://svn.dealii.org/trunk@22902 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/aclocal.m4 b/deal.II/aclocal.m4
index 18e9c047fac372853f334399a72877d44ba3c57e..d004639549c061500e1de4295661d2f179ab1324 100644 (file)
--- a/deal.II/aclocal.m4
+++ b/deal.II/aclocal.m4
@@ -5778,14 +5778,19 @@ AC_DEFUN(DEAL_II_CHECK_PETSC_MPI_CONSISTENCY, dnl
       if test `which $DEAL_II_PETSC_PCC` = `which $CC` ; then
         AC_MSG_RESULT(yes)
       else
-        AC_MSG_ERROR([PETSc has not been compiled with the same compiler])
+        DEAL_CC=`which $CC`
+       PETSC_CC=`which $DEAL_II_PETSC_PCC`
+        AC_MSG_ERROR([PETSc has not been compiled with the same compiler. PETS\
+c: '$PETSC_CC', deal: '$DEAL_CC'])
       fi
     ;;
     CXXONLY) dnl PETSC language is C++, check $CXX
       if test `which $DEAL_II_PETSC_PCC` = `which $CXX` ; then
         AC_MSG_RESULT(yes)
       else
-        AC_MSG_ERROR([PETSc has not been compiled with the same compiler])
+        DEAL_CC=`which $CXX`
+       PETSC_CC=`which $DEAL_II_PETSC_PCC`
+        AC_MSG_ERROR([PETSc has not been compiled with the same compiler. PETSc: '$PETSC_CC', deal: '$DEAL_CC'])
       fi
     ;;
   esac