Fix gdb/kgdb build under WITH_PIE

Explicitly specified bare .a libraries need ${PIE_SUFFIX}.

Reported by:	David E. Cross, on twitter
Sponsored by:	The FreeBSD Foundation

gnu/usr.bin/gdb/gdb/Makefile

@@ -3,9 +3,10 @@
 PROG=	gdb${GDB_SUFFIX}
 SRCS=	gdb.c
 
-BULIBS= ${OBJ_BU}/libbfd/libbfd.a ${OBJ_BU}/libopcodes/libopcodes.a \
-	${OBJ_BU}/libiberty/libiberty.a
-GDBLIBS= ${OBJ_GDB}/libgdb/libgdb.a
+BULIBS= ${OBJ_BU}/libbfd/libbfd${PIE_SUFFIX}.a \
+	${OBJ_BU}/libopcodes/libopcodes${PIE_SUFFIX}.a \
+	${OBJ_BU}/libiberty/libiberty${PIE_SUFFIX}.a
+GDBLIBS= ${OBJ_GDB}/libgdb/libgdb${PIE_SUFFIX}.a
 
 # libthread_db.so calls back into gdb for the proc services.  Make all the
 # global symbols visible.

gnu/usr.bin/gdb/kgdb/Makefile

@@ -4,9 +4,10 @@ PROG=	kgdb${GDB_SUFFIX}
 SRCS=	main.c kld.c kthr.c trgt.c trgt_${TARGET_CPUARCH}.c
 WARNS?=	2
 
-BULIBS= ${OBJ_BU}/libbfd/libbfd.a ${OBJ_BU}/libopcodes/libopcodes.a \
-	${OBJ_BU}/libiberty/libiberty.a
-GDBLIBS= ${OBJ_GDB}/libgdb/libgdb.a
+BULIBS= ${OBJ_BU}/libbfd/libbfd${PIE_SUFFIX}.a \
+	${OBJ_BU}/libopcodes/libopcodes${PIE_SUFFIX}.a \
+	${OBJ_BU}/libiberty/libiberty${PIE_SUFFIX}.a
+GDBLIBS= ${OBJ_GDB}/libgdb/libgdb${PIE_SUFFIX}.a
 
 DPADD=	${GDBLIBS} ${BULIBS}
 LDADD=	${GDBLIBS} ${BULIBS}