Cross compiling module

[Warner Losh]

On Nov 21, 2011, at 6:28 AM, Monthadar Al Jaberi wrote:

> Hi!
> 
> Not sure if this is the right place :)
> 
> I have written a kernel module with the following Makefile:
> .PATH:	${.CURDIR}/src
> 
> # Declare Name of kernel module
> KMOD    = moduletest
> 
> # Enumerate Source files for kernel module
> SRCS    =  module.c
> 
> # Include kernel module makefile
> .include <bsd.kmod.mk>
> 
> then
> cd  /usr/src
> make TARGET=mips TARGET_ARCH=mipseb buildenv

I usually do

make buildenv
(puts you into a subshell)
cd /root/mymodule
make

> cd /root/mymodule
> make
> 
> but I get the following error:

I'm surprised you got the mips compiler.  What's your environment look like?  What's @ pointing to?

Warner

> Warning: Object directory not changed from original /root/mymodule
> cc -O -pipe -G0 -Werror -D_KERNEL -DKLD_MODULE -nostdinc   -I. -I@
> -I@/contrib/altq -finline-limit=8000
> --param inline-unit-growth=100 --param large-function-growth=1000
> -fno-common  -G0 -fno-pic -mno-abicalls
> -mlong-calls  -msoft-float -ffreestanding -std=iso9899:1999 -Wall
> -Wredundant-decls -Wnested-externs -Wstrict-prototypes
>  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef
> -Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs
> -fdiagnostics-show-option -c /root/src/mymodule/src/module.c
> In file included from ./machine/bus.h:76,
>                 from /root/mymodule/module.c:57:
> ./machine/_bus.h:37:26: error: opt_cputype.h: No such file or directory
> *** Error code 1
> 
> Stop in /root/mymodule.
> 
> 
> $ which cc
> /usr/obj/mips.mipseb/usr/src/tmp/usr/bin/cc
> 
> $find /usr -name "opt_cputype.h"
> ...
> /usr/obj/mips.mipseb/usr/src/sys/RSPRO_NFS/opt_cputype.h
> 
> if I add:
> CFLAGS+=-I/usr/obj/mips.mipseb/usr/src/sys/RSPRO_NFS
> 
> it works now, seems like I am missing something?
> 
> br,
> 
> -- 
> Monthadar Al Jaberi
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