1 files changed, 80 insertions, 0 deletions

diff --git a/meta/classes-recipe/module.bbclass b/meta/classes-recipe/module.bbclass
new file mode 100644
index 0000000000..d52d5e3098
--- /dev/null
+++ b/meta/classes-recipe/module.bbclass
@@ -0,0 +1,80 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+inherit module-base kernel-module-split pkgconfig
+
+EXTRA_OEMAKE += "KERNEL_SRC=${STAGING_KERNEL_DIR}"
+
+MODULES_INSTALL_TARGET ?= "modules_install"
+MODULES_MODULE_SYMVERS_LOCATION ?= ""
+
+python __anonymous () {
+    depends = d.getVar('DEPENDS')
+    extra_symbols = []
+    for dep in depends.split():
+        if dep.startswith("kernel-module-"):
+            extra_symbols.append("${STAGING_INCDIR}/" + dep + "/Module.symvers")
+    d.setVar('KBUILD_EXTRA_SYMBOLS', " ".join(extra_symbols))
+}
+
+python do_devshell:prepend () {
+    os.environ['CFLAGS'] = ''
+    os.environ['CPPFLAGS'] = ''
+    os.environ['CXXFLAGS'] = ''
+    os.environ['LDFLAGS'] = ''
+
+    os.environ['KERNEL_PATH'] = d.getVar('STAGING_KERNEL_DIR')
+    os.environ['KERNEL_SRC'] = d.getVar('STAGING_KERNEL_DIR')
+    os.environ['KERNEL_VERSION'] = d.getVar('KERNEL_VERSION')
+    os.environ['CC'] = d.getVar('KERNEL_CC')
+    os.environ['LD'] = d.getVar('KERNEL_LD')
+    os.environ['AR'] = d.getVar('KERNEL_AR')
+    os.environ['O'] = d.getVar('STAGING_KERNEL_BUILDDIR')
+    kbuild_extra_symbols = d.getVar('KBUILD_EXTRA_SYMBOLS')
+    if kbuild_extra_symbols:
+        os.environ['KBUILD_EXTRA_SYMBOLS'] = kbuild_extra_symbols
+    else:
+        os.environ['KBUILD_EXTRA_SYMBOLS'] = ''
+}
+
+module_do_compile() {
+        unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
+        oe_runmake KERNEL_PATH=${STAGING_KERNEL_DIR}   \
+                   KERNEL_VERSION=${KERNEL_VERSION}    \
+                   CC="${KERNEL_CC}" LD="${KERNEL_LD}" \
+                   AR="${KERNEL_AR}" \
+                   O=${STAGING_KERNEL_BUILDDIR} \
+                   KBUILD_EXTRA_SYMBOLS="${KBUILD_EXTRA_SYMBOLS}" \
+                   ${MAKE_TARGETS}
+}
+
+module_do_install() {
+        unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
+        oe_runmake DEPMOD=echo MODLIB="${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}" \
+                   INSTALL_FW_PATH="${D}${nonarch_base_libdir}/firmware" \
+                   CC="${KERNEL_CC}" LD="${KERNEL_LD}" \
+                   O=${STAGING_KERNEL_BUILDDIR} \
+                   ${MODULES_INSTALL_TARGET}
+
+        if [ ! -e "${B}/${MODULES_MODULE_SYMVERS_LOCATION}/Module.symvers" ] ; then
+                bbwarn "Module.symvers not found in ${B}/${MODULES_MODULE_SYMVERS_LOCATION}"
+                bbwarn "Please consider setting MODULES_MODULE_SYMVERS_LOCATION to a"
+                bbwarn "directory below B to get correct inter-module dependencies"
+        else
+                install -Dm0644 "${B}/${MODULES_MODULE_SYMVERS_LOCATION}"/Module.symvers ${D}${includedir}/${BPN}/Module.symvers
+                # Module.symvers contains absolute path to the build directory.
+                # While it doesn't actually seem to matter which path is specified,
+                # clear them out to avoid confusion
+                sed -e 's:${B}/::g' -i ${D}${includedir}/${BPN}/Module.symvers
+        fi
+}
+
+EXPORT_FUNCTIONS do_compile do_install
+
+# add all splitted modules to PN RDEPENDS, PN can be empty now
+KERNEL_MODULES_META_PACKAGE = "${PN}"
+FILES:${PN} = ""
+ALLOW_EMPTY:${PN} = "1"