Compile Problem

[ghost]

First I wanted to thank you. i have a problem while compiling your driver i edit the make file with my kernel version

ARCH := arm
COMPILER := /home/circle/Desktop/spi_proj/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
COMPILER_V := gcc
PWD := $(shell pwd)
KERN_V=3.8.13
BUILD_V=-bone79
SOURCE=linux-stable-rcn-ee
SUBDIRS=firmware/

KDIR := $(PWD)/$(SOURCE)-$(KERN_V)$(BUILD_V)

obj-m+= driver/spi-slave-core.o driver/spi-slave-debug.o driver/spi-slave-dev.o driver/spi-mcspi-slave.o 

all:
	$(MAKE) -C $(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(COMPILER) modules
	$(COMPILER)$(COMPILER_V) -o slave_app/slave_app slave_app/slave_app.c

clean:
	$(MAKE) -C $(KDIR) M=$(PWD) ARCH=$(ARCH) clean

when i try to compile i get a lot of error: implicit declaration of function from each c file i try to add the prototype of function for each error from here http://elixir.free-electrons.com/linux/latest/ident/ didnt help and also try to include all the header file where the function is first Defined still didnt mange to compile it any ideas?

[niallp]

Just ran into something similar for 4.13.2, try adding <linux/sched/signal.h>

diff --git a/driver/spi-slave-dev.c b/driver/spi-slave-dev.c index 13027b2..70e75dd 100644 --- a/driver/spi-slave-dev.c +++ b/driver/spi-slave-dev.c @@ -23,6 +23,9 @@ #include <linux/poll.h> #include <asm/current.h>

+// needed for kernel > 4.4.54 (4.13.2) +#include <linux/sched/signal.h> + #include "spi-slave-dev.h" #include "spi-slave-core.h"