Modify the integer size detection in oredring to update the size at each configuration

modules/find/FindMETIS.cmake

@@ -283,9 +283,11 @@ int main(int argc, char **argv) {
     return 1;
 }
 ")
+unset(METIS_Idx_4 CACHE)
+unset(METIS_Idx_8 CACHE)
 check_c_source_runs("${METIS_C_TEST_METIS_Idx_4}" METIS_Idx_4)
+check_c_source_runs("${METIS_C_TEST_METIS_Idx_8}" METIS_Idx_8)
 if(NOT METIS_Idx_4)
-  check_c_source_runs("${METIS_C_TEST_METIS_Idx_8}" METIS_Idx_8)
   if(NOT METIS_Idx_8)
     set(METIS_INTSIZE -1)
   else()

modules/find/FindPTSCOTCH.cmake

@@ -401,9 +401,12 @@ int main(int argc, char **argv) {
     return 1;
 }
 ")
+
+unset(PTSCOTCH_Num_4 CACHE)
+unset(PTSCOTCH_Num_8 CACHE)
 check_c_source_runs("${PTSCOTCH_C_TEST_SCOTCH_Num_4}" PTSCOTCH_Num_4)
+check_c_source_runs("${PTSCOTCH_C_TEST_SCOTCH_Num_8}" PTSCOTCH_Num_8)
 if(NOT PTSCOTCH_Num_4)
-  check_c_source_runs("${PTSCOTCH_C_TEST_SCOTCH_Num_8}" PTSCOTCH_Num_8)
   if(NOT PTSCOTCH_Num_8)
     set(PTSCOTCH_INTSIZE -1)
   else()

modules/find/FindSCOTCH.cmake

@@ -345,9 +345,12 @@ int main(int argc, char **argv) {
     return 1;
 }
 ")
+
+unset(SCOTCH_Num_4 CACHE)
+unset(SCOTCH_Num_8 CACHE)
 check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_4}" SCOTCH_Num_4)
+check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_8}" SCOTCH_Num_8)
 if(NOT SCOTCH_Num_4)
-  check_c_source_runs("${SCOTCH_C_TEST_SCOTCH_Num_8}" SCOTCH_Num_8)
   if(NOT SCOTCH_Num_8)
     set(SCOTCH_INTSIZE -1)
   else()