[Buildroot] alsa unknown ioctl

[Ulf Samuelsson]

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Matthew Dombroski skrev:
| Hi,
| Thanks for pointing this out for me, the interesting thing now is that
| i had to *disable* the -mabi=aapcs-linux option and everything started
| working.
| Maybe there is a way we can detect that the kernel has been built with
| this option, blindly assuming that it's needed for arm doesn't seem to
| be working.
|
| ~Matt
|
| On Mon, Jul 14, 2008 at 8:33 PM, Ivan Kuten <ivan.kuten at promwad.com>
wrote:
|> Hello,
|>
|>> ALSA sound/core/control.c:1224: unknown ioctl = 0xc2c85512
|>>
|>> alsamixer: function snd_mixer_load failed: Inappropriate ioctl for
device.
|>
|> Try to check this previous buildroot thread:
|> http://busybox.net/lists/buildroot/2007-November/006326.html
|>

This is from arch/arm/Makefile of linux-2.6.25.10:

ifeq ($(CONFIG_AEABI),y)
CFLAGS_ABI	:=-mabi=aapcs-linux -mno-thumb-interwork
else
CFLAGS_ABI	:=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call
cc-option,-mno-thumb-interwork,)
endif

so -mabi=aapcs-linux should only be enabled if the toolchain is using EABI.


alsa-lib.mk:

ifeq ($(BR2_arm),y)
ALSA_LIB_ABI:=-mabi=aapcs-linux
else
ALSA_LIB_ABI:=
endif

should probably be replaced with:

ifeq ($(BR2_ARM_EABI),y)
ALSA_LIB_ABI:=-mabi=aapcs-linux
else
ALSA_LIB_ABI:=
endif

BR
Ulf Samuelsson

|>
|> BR,
|> Ivan
|>
|>
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