diff --git a/src/Rules.LXpgi.mk b/src/Rules.LXpgi.mk
index 2aace424429a8c634998e3ef0db6aface702ea2a..07ab3c9f20607f052ce1c32141da2fef5501cfcb 100644
--- a/src/Rules.LXpgi.mk
+++ b/src/Rules.LXpgi.mk
@@ -128,11 +128,11 @@ include Makefile.MESONH.mk
 #         etc ...                                        #
 #                                                        #
 ##########################################################
-OPT_PERF1  =  -O1 -Kieee
+OPT_PERF1  =  -O1 -Kieee -g
 OBJS_O1= spll_modd_isba_n.o spll_pack_isba_patch_n.o spll_mode_construct_ll.o \
          spll_init_surf_atm_n.o spll_mode_scatter_ll.o spll_convert_patch_teb.o \
          spll_define_mask_n.o spll_del1dfield_ll.o spll_mode_fm.o spll_mode_gather_ll.o \
-	 spll_phys_param_n.o
+         spll_phys_param_n.o
 $(OBJS_O1) : OPT = $(OPT_BASE) $(OPT_PERF1)
 
 #