3.4.0+ - Linus GIT -- drivers/built-in.o: In function `nouveau_acpi_edid': (.text+0x112337): undefined reference to `acpi_video_get_edid'
Randy Dunlap
rdunlap at xenotime.net
Mon Jul 30 10:40:24 PDT 2012
On 05/31/2012 12:10 AM, Miles Lane wrote:
> I suspect this is due to a dependency not enforced in the Kconfig logic?
>
> LD init/built-in.o
> drivers/built-in.o: In function `nouveau_acpi_edid':
> (.text+0x112337): undefined reference to `acpi_video_get_edid'
This build error still happens in Linux 3.5.
It is attempting to call a symbol in a loadable module from
a builtin driver.
CONFIG_ACPI_VIDEO=m
CONFIG_VIDEO_OUTPUT_CONTROL=m
If I use change CONFIG_VIDEO_OUTPUT_CONTROL to y,
CONFIG_ACPI_VIDEO also changes to y, so the relevant
functions are all builtin, and there is no build problem.
I guess that this line in drivers/gpu/drm/nouveau/Kconfig:
select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL && INPUT
sets ACPI_VIDEO=m since VIDEO_OUTPUT_CONTROL=m, even though all of the
other symbols are =y.
xconfig tells me:
Selects: FW_LOADER [=y] && DRM_KMS_HELPER [=y] && DRM_TTM [=y] && FB_CFB_FILLRECT [=y] && FB_CFB_COPYAREA [=y] && FB_CFB_IMAGEBLIT [=y] && FB [=y] && FRAMEBUFFER_CONSOLE [=y] && FB_BACKLIGHT [=y] && ACPI_VIDEO [=m] && ACPI_WMI [=y] && MXM_WMI [=y] && POWER_SUPPLY [=y]
--
~Randy
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