diff --git a/src/interfaces/ecpg/lib/Makefile.in b/src/interfaces/ecpg/lib/Makefile.in
index 97c4c8090337d698bc23dbc0987b58f9e7ca1402..19a32d8c420c623c16bcbecce575b78a3987b0f1 100644
--- a/src/interfaces/ecpg/lib/Makefile.in
+++ b/src/interfaces/ecpg/lib/Makefile.in
@@ -61,6 +61,6 @@ uninstall::
 libecpg.a : libecpg.a(ecpglib.o) libecpg.a(typename.o)
 
 ecpglib.o : ecpglib.c ../include/ecpglib.h ../include/ecpgtype.h
-	$(CC) -O2 -g -Wall -I../include $(PQ_INCLUDE) -c ecpglib.c
+	$(CC) -Wall -I../include $(PQ_INCLUDE) -c ecpglib.c
 typename.o : typename.c ../include/ecpgtype.h
-	$(CC) -g -O2 -Wall -I../include $(PQ_INCLUDE) -c typename.c
+	$(CC) -Wall -I../include $(PQ_INCLUDE) -c typename.c
diff --git a/src/interfaces/ecpg/preproc/Makefile b/src/interfaces/ecpg/preproc/Makefile
index 9a170eabb3b490ab4818984623cfc8f167d5c86f..1cb96989bca573a2de22ec981f2a57c1c702396e 100644
--- a/src/interfaces/ecpg/preproc/Makefile
+++ b/src/interfaces/ecpg/preproc/Makefile
@@ -1,4 +1,3 @@
-# Generated automatically from Makefile.in by configure.
 SRCDIR= ../../..
 include $(SRCDIR)/Makefile.global
 
@@ -6,7 +5,7 @@ MAJOR_VERSION=1
 MINOR_VERSION=0
 PATCHLEVEL=0
 
-CFLAGS=-I../include -O2 -g -Wall -DMAJOR_VERSION=$(MAJOR_VERSION) -DMINOR_VERSION=$(MINOR_VERSION) -DPATCHLEVEL=$(PATCHLEVEL)
+CFLAGS=-I../include -Wall -DMAJOR_VERSION=$(MAJOR_VERSION) -DMINOR_VERSION=$(MINOR_VERSION) -DPATCHLEVEL=$(PATCHLEVEL)
 
 all:: ecpg
 
@@ -21,7 +20,7 @@ uninstall:
 
 # Rule that really do something.
 ecpg: y.tab.o pgc.o type.o ecpg.o ../lib/typename.o
-	$(CC) -g -O2 -Wall -o ecpg y.tab.o pgc.o type.o ecpg.o ../lib/typename.o $(LEXLIB)
+	$(CC) -Wall -o ecpg y.tab.o pgc.o type.o ecpg.o ../lib/typename.o $(LEXLIB)
 
 y.tab.h y.tab.c: preproc.y
 	$(YACC) $(YFLAGS) $<