** Changed in: dkms (Ubuntu)
Status: New => Fix Released
** Also affects: dkms (Ubuntu Kinetic)
Importance: Undecided
Status: New
** Changed in: dkms (Ubuntu Kinetic)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/2012612
Title:
Add new feature BUILD_EXCLUSIVE_CONFIG to jammy as well
Status in dkms package in Ubuntu:
Fix Released
Status in dkms source package in Jammy:
New
Status in dkms source package in Kinetic:
Fix Released
Bug description:
[SRU Justification]
Impact:
Some dkms modules (like evdi-dkms) have this rule BUILD_EXCLUSIVE_CONFIG
which prevent it from building if a specific configuration is enabled/disabled.
This feature was released for kinetic but not for jammy.
This backports the patch to jammy as well.
Fix:
Backported BUILD_EXCLUSIVE_CONFIG.patch from kinetic.
In order to be applied, I had to slightly modify the first junk. Other than
that, it was a clean backport.
Testcase:
I used evdi as dkms module with this feature. Before the fix, it will fail
with this error:
DKMS make.log for evdi-1.12.0+dfsg for kernel 5.15.0-1029-kvm (x86_64)
Thu Mar 23 10:10:14 UTC 2023
make: Entering directory '/usr/src/linux-headers-5.15.0-1029-kvm'
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_platform_drv.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_platform_dev.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_sysfs.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_modeset.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_connector.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_encoder.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_drm_drv.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_fb.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_gem.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_painter.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_params.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_cursor.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_debug.o
CC [M] /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_i2c.o
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_i2c.c: In function ‘evdi_i2c_add’:
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_i2c.c:49:16: error: implicit
declaration of function ‘i2c_add_adapter’; did you mean ‘i2c_verify_adapter’?
[-Werror=implicit-function-declaration]
49 | return i2c_add_adapter(adapter);
| ^~~~~~~~~~~~~~~
| i2c_verify_adapter
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_i2c.c: In function
‘evdi_i2c_remove’:
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_i2c.c:54:9: error: implicit
declaration of function ‘i2c_del_adapter’; did you mean ‘i2c_verify_adapter’?
[-Werror=implicit-function-declaration]
54 | i2c_del_adapter(adapter);
| ^~~~~~~~~~~~~~~
| i2c_verify_adapter
cc1: some warnings being treated as errors
make[1]: *** [scripts/Makefile.build:297:
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_i2c.o] Error 1
make: *** [Makefile:1906: /var/lib/dkms/evdi/1.12.0+dfsg/build] Error 2
make: Leaving directory '/usr/src/linux-headers-5.15.0-1029-kvm'
This fails because CONFIG_I2C=n for a KVM kernel derivative.
Even though evdi has this build rule: BUILD_EXCLUSIVE_CONFIG="CONFIG_I2C
CONFIG_DRM"
After the fix, it will not build:
Building initial module for 5.15.0-1029-kvm
Error! The /var/lib/dkms/evdi/1.12.0+dfsg/5.15.0-1029-kvm/x86_64/dkms.conf
for module evdi includes a BUILD_EXCLUSIVE directive which does not match this
kernel/arch.
The /var/lib/dkms/evdi/1.12.0+dfsg/5.15.0-1029-kvm/x86_64/dkms.conf for
module evdi includes a BUILD_EXCLUSIVE directive which does not match this
kernel/arch/config.
This indicates that it should not be built.
Skipped.
Regression potential:
Very low, this is just a simple feature to prevent building a module.
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