> If build kernel without "O=dir", below error will be seen:
>
> In file included from drivers/tee/optee/optee_trace.h:67,
> from drivers/tee/optee/call.c:18:
> ./include/trace/define_trace.h:95:42: fatal error: ./optee_trace.h: No such
> file or directory
> 95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
> | ^
> compilation terminated.
>
> Fix it by adding below line to Makefile:
> CFLAGS_call.o := -I$(src)
>
> Tested with and without "O=dir", both can build successfully.
>
> Reported-by: Guenter Roeck <li...@roeck-us.net>
> Suggested-by: Steven Rostedt <rost...@goodmis.org>
> Signed-off-by: Jisheng Zhang <jisheng.zh...@synaptics.com>
Fixes: 0101947dbcc3 ("tee: optee: add invoke_fn tracepoints")
Tested-by: Heiko Thiery <heiko.thi...@gmail.com>
> ---
> drivers/tee/optee/Makefile | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/tee/optee/Makefile b/drivers/tee/optee/Makefile
> index 56263ae3b1d7..3aa33ea9e6a6 100644
> --- a/drivers/tee/optee/Makefile
> +++ b/drivers/tee/optee/Makefile
> @@ -6,3 +6,6 @@ optee-objs += rpc.o
> optee-objs += supp.o
> optee-objs += shm_pool.o
> optee-objs += device.o
> +
> +# for tracing framework to find optee_trace.h
> +CFLAGS_call.o := -I$(src)
> --
> 2.31.0
>
Thank you.
--
Heiko
