build: use the standard AM_V_GEN definition for output.

This actually allows for the command to be printed if using `make V=1`

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>

include/Makefile.am

@@ -100,5 +100,4 @@ noinst_HEADERS = osmocom/core/timer_compat.h
 
 osmocom/core/crc%gen.h: osmocom/core/crcXXgen.h.tpl
 	$(AM_V_GEN)$(MKDIR_P) $(notdir $@)
-	@echo "  SED    $< -> $@"
-	@sed -e's/XX/$*/g' $< > $@
+	$(AM_V_GEN)sed -e's/XX/$*/g' $< > $@

src/Makefile.am

@@ -39,5 +39,4 @@ libosmocore_la_SOURCES += serial.c
 endif
 
 crc%gen.c: crcXXgen.c.tpl
-	@echo "  SED    $< -> $@"
-	@sed -e's/XX/$*/g' $< > $@
+	$(AM_V_GEN)sed -e's/XX/$*/g' $< > $@