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PACKAGE_ARCH = "${MACHINE_ARCH}"
#
# Provide alternate uapi headers from a kernel, for use by
# a recipe. This is *not* a replacement for the linux-libc-headers
# package, but is expected to be used when a package is tightly
# coupled to a specific kernel and needs definitions / interfaces
# specific to that kernel.
#
# The class works in one of two ways, it can be included by the
# recipe that requires the headers (mode 1 below) or by a kernel
# recipe that provides the alternate headers. Both are valid,
# and one may be chosen over the other depending on how many
# packages need custom headers, etc.
#
# It is up to the package that builds against these headers to
# ensure that the alternate kernel headers are in the include
# path and used for the build.
#
# mode 1: included directly from a recipe that needs alternate
# kernel headers. In this mode the headers install from
# the shared kernel dir to WORKDIR.
# Note: in this mode, the kernel doesn't (or shouldn't)
# inherit kernel-alt-headers itself.
#
# The headers will be in: $WORKDIR/usr/alt-headers
#
# mode 2: included by a kernel recipe to provide alt-headers.
# In this mode, the kernel build/install is modified to
# stage the headers to the sysroot (and create a
# kernel-headers-alt package).
#
# The headers are found in: recipe-sysroot/usr/alt-headers
#
inherit kernel-arch
KERNEL_ALT_HEADER_DIR ?= "/usr/alt-headers/"
DEPENDS += "unifdef-native bison-native rsync-native"
KERNEL_SOURCE_IS_LOCAL ?= "${@(bb.data.inherits_class('kernel', d))}"
python __anonymous () {
if not bb.data.inherits_class('kernel',d):
d.appendVar( 'DEPENDS', " virtual/kernel" )
else:
# We need to package these up, even if they aren't expected to be
# used for anything
d.appendVar( 'PACKAGES', " ${KERNEL_PACKAGE_NAME}-headers-alt" )
d.setVar( 'FILES:${KERNEL_PACKAGE_NAME}-headers-alt', "${KERNEL_ALT_HEADER_DIR}" )
}
do_compile:prepend() {
if [ "${KERNEL_SOURCE_IS_LOCAL}" = "False" ]; then
# install from the staging kernel directory
oe_runmake -C ${STAGING_KERNEL_DIR} headers_install INSTALL_HDR_PATH=${WORKDIR}/${KERNEL_ALT_HEADER_DIR}
# there have been reports that menuconfig won't run due to a dirty
# kernel directory after the install, so we run mrproper to make sure
# it is clean
oe_runmake -C ${STAGING_KERNEL_DIR} mrproper
fi
}
do_install:append() {
if [ "${KERNEL_SOURCE_IS_LOCAL}" = "True" ]; then
# install to our deploy directory, this will be packaged and staged
oe_runmake headers_install INSTALL_HDR_PATH=${D}${KERNEL_ALT_HEADER_DIR}
# remove export artifacts
find ${D}${KERNEL_ALT_HEADER_DIR} -name .install -exec rm {} \;
find ${D}${KERNEL_ALT_HEADER_DIR} -name ..install.cmd -exec rm {} \;
fi
}
sysroot_stage_all:append() {
if [ "${KERNEL_SOURCE_IS_LOCAL}" = "True" ]; then
mkdir -p ${SYSROOT_DESTDIR}${KERNEL_ALT_HEADER_DIR}
cp -r ${D}${KERNEL_ALT_HEADER_DIR}/* ${SYSROOT_DESTDIR}/${KERNEL_ALT_HEADER_DIR}
fi
}
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