Do not assume PV and kernel version must always match. Use PV for
kernel install directory (i.e. /usr/src/linux) but get the release
from the kernel build directory for the module directory. Update
preinst version check to account for live ebuilds.

Signed-off-by: Michał Górny <mgorny@gentoo.org>
---
eclass/kernel-install.eclass | 67 ++++++++++++++++++++++--------------
1 file changed, 41 insertions(+), 26 deletions(-)

diff --git a/eclass/kernel-install.eclass b/eclass/kernel-install.eclass
index dc77cb514b1a..9aece24bbff5 100644
--- a/eclass/kernel-install.eclass
+++ b/eclass/kernel-install.eclass
@@ -403,24 +403,34 @@ kernel-install_src_test() {
kernel-install_pkg_preinst() {
debug-print-function ${FUNCNAME} "${@}"

- local ver="${PV}${KV_LOCALVERSION}"
- local kdir="${ED}/usr/src/linux-${ver}"
- local relfile="${kdir}/include/config/kernel.release"
- [[ ! -d ${kdir} ]] && die "Kernel directory ${kdir} not installed!"
- [[ ! -f ${relfile} ]] && die "Release file ${relfile} not installed!"
- local release="$(<"${relfile}")"
- if [[ ${release} != ${PV}* ]]; then
- eerror "Kernel release mismatch!"
- eerror " expected (PV): ${PV}*"
- eerror " found: ${release}"
- eerror "Please verify that you are applying the correct patches."
- die "Kernel release mismatch