* Package:    app-emulation/virtualbox-modules-6.0.4
 * Repository: gentoo
 * Maintainer: polynomial-c@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found sources for kernel version:
 *     5.0.2-gentoo
 * Checking for suitable kernel configuration options...
 [ ok ]
>>> Unpacking source...
>>> Unpacking vbox-kernel-module-src-6.0.4.tar.xz to /var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work
>>> Source unpacked in /var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work
>>> Preparing source in /var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work ...
ln: failed to create symbolic link 'Module.symvers': File exists
 * Preparing vboxdrv module
make -j9 HOSTCC=x86_64-pc-linux-gnu-gcc CROSS_COMPILE=x86_64-pc-linux-gnu- 'LDFLAGS=-m elf_x86_64' CC=x86_64-pc-linux-gnu-gcc KERN_DIR=/usr/src/linux KERN_VER=5.0.2-gentoo O=/usr/src/linux V=1 KBUILD_VERBOSE=1 all 
=== Building 'vboxdrv' module ===
make[1]: Entering directory '/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work/vboxdrv'
/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work/vboxdrv/Makefile.include.header:143: *** Error: unable to find the headers of the Linux kernel to build against. Specify KERN_VER=<version> (currently 5.0.2-gentoo) and run Make again.  Stop.
make[1]: Leaving directory '/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work/vboxdrv'
make: *** [Makefile:58: vboxdrv] Error 2
 * ERROR: app-emulation/virtualbox-modules-6.0.4::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=app-emulation/virtualbox-modules-6.0.4::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-emulation/virtualbox-modules-6.0.4::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/temp/environment'.
 * Working directory: '/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work'
 * S: '/var/tmp/portage/app-emulation/virtualbox-modules-6.0.4/work'