From 47ffd6c2fc72b46daa9d5d59eedb894fab2b7ee1 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Tue, 9 Sep 2008 15:45:18 +0200 Subject: Makefile: compile and link each module just once Several source files need to be compiled and linked when one or more config options are selected. To allow for easy selection in the Makefiles yet to avoild multiple compilation (which costs build time) and especially multiple linking (which causes errors), we use "COBJS = $(sort COBJS-y)" which eliminates duplicates. By courtesy of Detlev Zundel who suggested this approach. Signed-off-by: Wolfgang Denk --- drivers/serial/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/serial') diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index b370828caa..adb0a589ba 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -39,7 +39,7 @@ COBJS-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o COBJS-$(CONFIG_SCIF_CONSOLE) += serial_sh.o COBJS-$(CONFIG_USB_TTY) += usbtty.o -COBJS := $(COBJS-y) +COBJS := $(sort COBJS-y) SRCS := $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) -- cgit