id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host
17517,error compiling kernel modules for kernel-4.15,zd59,,"Hi!

Host: windows x64 10 ent Build 10240
Guest: Slackware-14.2 x64 kernel-4.15 final from 28.1.2018 unmodified

Tried to compile vbox modules (autocompile at machine BOOT with new kernel) - failed with /var/log/vboxadd-setup.log containing:
---------------------------------------------
Building the main Guest Additions module.
make V=1 CONFIG_MODULE_SIG= -C /lib/modules/4.15.0/build SUBDIRS=/tmp/vbox.0 SRCROOT=/tmp/vbox.0 -j4 modules
make[1]: warning: -jN forced in submake: disabling jobserver mode.
test -e include/generated/autoconf.h -a -e include/config/auto.conf || (		\
echo >&2;							\
echo >&2 ""  ERROR: Kernel configuration is invalid."";		\
echo >&2 ""         include/generated/autoconf.h or include/config/auto.conf are missing."";\
echo >&2 ""         Run 'make oldconfig && make prepare' on kernel src to fix it."";	\
echo >&2 ;							\
---------------------------------------------
So I repeat a kernel compilation and install with suggestion as above:
'make oldconfig && make prepare' following a compilation & installation of the kernel & modules.
But this did not solve the error.

Note: on kernel-4.14.14 the vbox modules compile & work.

",defect,closed,guest additions,VirtualBox 5.2.6,duplicate,guest additions compile error,,Linux,Windows