** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1871887
Title:
oss4-dkms fails to install on armhf
Status in linux package in Ubuntu:
Confirmed
Status in oss4 package in Ubuntu:
New
Bug description:
oss4 autopkgtest fails when building the dkms module:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/armhf/o/oss4/20200409_153053_073f6@/log.gz
:
...
Building initial module for 5.4.0-21-generic
Error! Bad return status for module build on kernel: 5.4.0-21-generic (armv7l)
Consult /var/lib/dkms/oss4/4.2-build2010/build/make.log for more information.
dpkg: error processing package oss4-dkms (--configure):
installed oss4-dkms package post-installation script subprocess returned
error exit status 10
...
Apparently it is caused by kernel Makefiles setting hard and soft
float on the same gcc line (soft is wrong for armhf):
# cat /var/lib/dkms/oss4/4.2-build2010/build/make.log
DKMS make.log for oss4-4.2-build2010 for kernel 5.4.0-21-generic (armv8l)
Thu Apr 9 17:01:04 UTC 2020
make: Entering directory '/usr/src/linux-headers-5.4.0-21-generic'
CC [M] /var/lib/dkms/oss4/4.2-build2010/build/core/oss_core.o
gcc: error: -mfloat-abi=soft and -mfloat-abi=hard may not be used together
make[1]: *** [scripts/Makefile.build:275:
/var/lib/dkms/oss4/4.2-build2010/build/core/oss_core.o] Error 1
make: *** [Makefile:1719: /var/lib/dkms/oss4/4.2-build2010/build/core] Error 2
make: Leaving directory '/usr/src/linux-headers-5.4.0-21-generic'
The source of the wrong flag seems to be:
$ grep soft /usr/src/linux-headers-5.4.0-21/arch/arm/Makefile
KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call
cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float
-Uarm
...
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