[alsa-devel] Problem about cross-compiling alsa-driver for arm-linux (can't get .ko module files)

[Jie Jiang]

Hi Javier,

I have been trying to cross compile alsa-driver-1.0.22 for my arm-linux
board. After the configuration and make process, there are some *.o
object files generated in the "modules" directory. But the desired *.ko
kernel module files are not generated. When I tried to insert these
object files into the running kernel via insmod command, the insmod
command returns -1 and complains "Invalid module format!".

Here is my configure command:

CC=gcc ./configure --with-cross=arm-linux-
--with-kernel=/work/63/ipcam/Kernel/linux-2.6.19.2-in-use
--with-build=/work/63/ipcam/Kernel/linux-2.6.19.2-in-use
--with-debug=full --enable-dynamic-minors --host=arm-linux
--build=i386-linux --with-redhat=no --with-suse=no
--prefix=/work/63/ipcam/tmp

The configure outputs are as follows:

checking for arm-linux-gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for arm-linux-ranlib... arm-linux-ranlib
checking for a BSD-compatible install... /usr/bin/install -c
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking whether time.h and sys/time.h may both be included... yes
checking whether gcc needs -traditional... no
checking for current
directory... /work/63/ipcam/Filesystem/rootfs/mx27ipcam-alsa/ipcam-alsa-driver-1.0.22
checking cross compile... arm-linux-
checking for directory with kernel
source... /work/63/ipcam/Kernel/linux-2.6.19.2-in-use
checking for directory with kernel
build... /work/63/ipcam/Kernel/linux-2.6.19.2-in-use
checking for kernel linux/version.h... yes
checking for kernel linux/autoconf.h... yes
checking for kernel version... 0.0.0
checking for GCC version... Kernel compiler:  Used compiler:
arm-linux-gcc (GCC) 4.1.1

*** NO PREDEFINED KERNEL COMPILER IS DETECTED
*** Assuming the same compiler is used with the current system compiler.

*** Please make sure that the same compiler version was used for
building kernel.

checking for built-in ALSA... unknown
checking for existing ALSA module... unknown
checking for Red Hat kernel... no
checking for SUSE kernel... no
checking for updating alsa-kernel version.h... yes
checking for CONFIG_EXPERIMENTAL... yes
checking for directory to store kernel
modules... /lib/modules/0.0.0/misc
checking for verbose procfs... on
checking for verbose printk... on
checking for debug level... full
checking for processor type... unknown
checking for kernel linux/config.h... no
Creating <linux/config.h>...
checking for deprecated linux/config.h... checking to modify of kernel
linux/kmod.h... no
checking for kernel linux/utsrelease.h... yes
checking for kernel linux/compiler.h... yes
checking for kernel linux/pm.h... yes
checking for kernel linux/spinlock.h... yes
checking for kernel linux/irq.h... yes
checking for kernel linux/threads.h... yes
checking for kernel linux/rwsem.h... yes
checking for kernel linux/gameport.h... yes
checking for kernel media/v4l2-dev.h... yes
checking for kernel linux/devfs_fs_kernel.h... no
Creating a dummy <linux/devfs_fs_kernel.h>...
checking for kernel linux/highmem.h... yes
checking for kernel linux/workqueue.h... yes
checking for kernel linux/dma-mapping.h... yes
checking for kernel asm/hw_irq.h... yes
checking for kernel linux/device.h... yes
checking for kernel linux/platform_device.h... yes
checking for kernel linux/isa.h... yes
checking for kernel linux/jiffies.h... yes
checking for kernel linux/compat.h... yes
checking for kernel linux/log2.h... no
Creating a dummy <linux/log2.h>...
checking for kernel linux/adb.h... yes
checking for kernel linux/cuda.h... yes
checking for kernel linux/pmu.h... yes
checking for kernel linux/io.h... yes
checking for kernel linux/moduleparam.h... yes
checking for kernel linux/syscalls.h... yes
checking for kernel linux/firmware.h... yes
checking for kernel linux/err.h... yes
checking for kernel linux/bitmap.h... yes
checking for kernel linux/mutex.h... yes
checking for kernel linux/pm_qos_params.h... no
Creating <linux/pm_qos_params.h>...
checking for kernel linux/kthread.h... yes
checking for kernel asm/irq_regs.h... yes
checking for kernel linux/seq_file.h... yes
checking for kernel linux/debugfs.h... yes
checking for kernel linux/gpio.h... no
Creating a dummy <linux/gpio.h>...
checking for kernel linux/bug.h... no
Creating a dummy <linux/bug.h>...
checking for kernel linux/math64.h... no
Creating <linux/math64.h>...
checking for kernel linux/regulator/consumer.h... no
checking for kernel linux/dmi.h... yes
checking for kernel linux/bitrev.h... no
Creating a dummy <linux/bitrev.h>...
checking for kernel linux/hrtimer.h... yes
checking for exported symbol dump_stack...
grep: /work/63/ipcam/Kernel/linux-2.6.19.2-in-use/kernel/ksyms.c: No
such file or directory
no
checking for kernel module symbol versions... unknown
checking for has ioport support... unknown
checking for PCI support in kernel... unknown
checking for I2C driver in kernel... unknown
checking for firmware loader... unknown
checking for SMP... unknown
checking for ISA PnP driver in kernel... yes
checking for PnP driver in kernel... yes
checking for Kernel ISA-PnP support... unknown
checking for Kernel ISA-PnP module support... unknown
checking for strlcpy... yes
checking for snprintf... yes
checking for vsnprintf... yes
checking for scnprintf... yes
checking for sscanf... yes
checking for vmalloc_to_page... yes
checking for old kmod... no
checking for PDE... yes
checking for pci_set_consistent_dma_mask... no
checking for pci_dev_present... no
checking for msleep... yes
checking for msleep_interrupt... yes
checking for msecs_to_jiffies... yes
checking for tty->count is the atomic type... no
checking for io_remap_pfn_range... yes
checking for kcalloc... yes
checking for kstrdup... yes
checking for kstrndup... no
checking for kzalloc... yes
checking for pci_ioremap_bar... no
checking for saved_config_space in pci_dev... yes
checking for new pci_save_state... yes
checking for register_sound_special_device... yes
checking for old kill_fasync... no
checking for dma_addr_t... yes
checking for MUTEX macros... no
checking for driver extra-version... 
checking for driver version... 1.0.22
checking for dynamic minor numbers... yes
checking for sequencer support... yes
checking for OSS/Free emulation... yes
checking for OSS PCM plugin system inclusion... yes
checking for RTC support... unknown
checking for HPET support... unknown
checking for Procfs support... unknown
checking for USB support... unknown
checking for USB module support... unknown
checking for gfp_t... yes
checking for GFP_DMA32... yes
checking for page_to_pfn... yes
checking for init_utsname... yes
checking for is_power_of_2... no
checking for __ffs... yes
checking for PnP suspend/resume... yes
checking for builtin _Bool support... yes
checking for x86-compatible PC... unknown
checking for kernel PCMCIA
checking for PCMCIA support... unknown
checking for PCMCIA module support... unknown
checking for PC9800 support in kernel... unknown
checking for parallel port support... unknown
checking for parallel port module support... unknown
checking for power management... unknown
checking for cards to compile driver for... all
checking for additonal options to compile driver for... all
configure: creating ./config.status
config.status: creating version
config.status: creating Makefile.conf
config.status: WARNING:  Makefile.conf.in seems to ignore the
--datarootdir setting
config.status: creating snddevices
config.status: creating utils/alsa-driver.spec
config.status: creating utils/buildrpm
config.status: creating toplevel.config
config.status: creating utils/alsasound
config.status: creating utils/alsasound.posix
config.status: creating include/pci_ids_compat.h
config.status: creating include/i2c-id_compat.h
config.status: creating include/config.h
config.status: include/config.h is unchanged
config.status: creating include/config1.h
config.status: include/config1.h is unchanged
config.status: creating include/version.h
config.status: include/version.h is unchanged
config.status: creating include/autoconf-extra.h
config.status: include/autoconf-extra.h is unchanged

And the generated Makefile.conf is:


#
# Configuration Makefile for ALSA driver
# Copyright (c) 1994-98 by Jaroslav Kysela <perex at perex.cz>
#

NEW_KBUILD       = 

mainsrcdir	= .
MAINSRCDIR
= /work/63/ipcam/Filesystem/rootfs/mx27ipcam-alsa/ipcam-alsa-driver-1.0.22

CROSS_COMPILE   ?= arm-linux-
ARCH            ?= 
ifdef NEW_KBUILD
CC		= $(CROSS_COMPILE)gcc 
CPP		= $(CROSS_COMPILE)gcc -E
export CROSS_COMPILE ARCH
else
AS		= $(CROSS_COMPILE)as
LD		= $(CROSS_COMPILE)ld
CC		= $(CROSS_COMPILE)gcc 
CPP		= $(CROSS_COMPILE)gcc -E
AR		= $(CROSS_COMPILE)ar
MODFLAGS	= -DMODULE=1
CFLAGS_KERNEL	=
GENKSYMS	= /sbin/genksyms -k 0.0.0
endif

prefix		= /work/63/ipcam/tmp
exec_prefix	= ${prefix}
sysconfdir	= ${prefix}/etc
bindir		= ${exec_prefix}/bin
sbindir		= ${exec_prefix}/sbin
mandir		= ${prefix}/share/man
moddir		= /lib/modules/0.0.0/misc
moddir_tree	= 
c_opts		= -O2  -Wdeclaration-after-statement -Wno-pointer-sign -DLINUX
m_opts		= 
processor	= unknown
msmp		= 
kaversion	= 0.0.0
kversion	= 0
kpatchlevel	= 0
ksublevel	= 0
kextraversion	= 

CONFIG_SND_VERSION	= 1.0.22
CONFIG_SND_KERNELDIR	= /work/63/ipcam/Kernel/linux-2.6.19.2-in-use
CONFIG_MODULES		= y
CONFIG_SND_MVERSION	= 
CONFIG_ISAPNP_KERNEL	= y
CONFIG_PNP_KERNEL	= y
CONFIG_PROC_FS		= 
CONFIG_PM		= 
CONFIG_AC97_BUS		= 
CONFIG_HAS_DMA		= y

ifndef NEW_KBUILD
INCLUDE		= -I$(TOPDIR)/include
-I/work/63/ipcam/Kernel/linux-2.6.19.2-in-use/include
-I/work/63/ipcam/Kernel/linux-2.6.19.2-in-use/include
CFLAGS		= $(MODFLAGS) $(INCLUDE) $(c_opts) -Wall -Wstrict-prototypes \
	-fomit-frame-pointer -Wno-trigraphs -O2 -fno-strict-aliasing
-fno-common \
	-pipe -DALSA_BUILD -nostdinc -iwithprefix include
ifdef CONFIG_SND_MVERSION
CFLAGS += -DMODVERSIONS -include
$(CONFIG_SND_KERNELDIR)/include/linux/modversions.h
endif
CPPFLAGS = $(MODFLAGS) $(INCLUDE) $(c_opts) -DALSA_BUILD -nostdinc
-iwithprefix include
MAKE		+= $(m_opts)
SNDVERSIONS	= $(TOPDIR)/include/sndversions.h
DEXPORT		= $(TOPDIR)/include/modules
else
# 2.6 kbuild
EXTRA_CFLAGS += -DALSA_BUILD
LINUXINCLUDE := -I$(MAINSRCDIR)/include $(LINUXINCLUDE)
CPPFLAGS := -I$(MAINSRCDIR)/include $(CPPFLAGS)
KBUILD_CPPFLAGS := -I$(MAINSRCDIR)/include $(KBUILD_CPPFLAGS)
# 2.6.24 complains this override...
# CFLAGS := -I$(MAINSRCDIR)/include $(CFLAGS)
MAKE_ADDS = 
endif




-------------------------------------------------------------------------------------

>From the above outputs, it seems that the configure script can't
determine the correct kernel version of my target kernel, and this will
prevent the "NEW_KBUILD" variable from being defined in Makefile.conf.
Also in Makefile.conf, the "ARCH" variable is not set.



What's the correct way to configure and cross-compile alsa-driver to
generate the desired *.ko kernel modules? Am I missing anything?

Regards,
Jie Jiang