Changeset 85939 in vbox for trunk/src/VBox/Additions/linux/drm

Timestamp:

Aug 28, 2020 6:36:30 PM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

140134

Message:

Additions/linux/Makefile, HostDrivers/linux/Makefile: Many cleanups in the Linux kernel module Makefiles, making them more uniform, and allow install of individual modules. Additionally, allow building of the kernel modules straight from the respective subdirectory (no dependencies across directories, so vboxdrv/vboxguest still needs to be built first, otherwise you end up with undefined symbols). Finally some parallelization improvements. At the top level still uses the Module.symvers copying and somewhat quirky KBUILD_EXTRA_SYMBOLS pointing to the copy, because this is backwards compatible to before KBUILD_EXTRA_SYMBOLS was invented.

File:

• trunk/src/VBox/Additions/linux/drm/Makefile.module.kms (modified) (1 diff)

trunk/src/VBox/Additions/linux/drm/Makefile.module.kms

@@ -22 +22 @@
 include $(obj)/Makefile-header.gmk
 VBOXDRM_DIR = $(VBOX_MODULE_SRC_DIR)
+
+# Allow building directly from the subdirectory without assuming the toplevel
+# makefile has done the copying. Not the default use case, but can be handy.
+ifndef KBUILD_EXTRA_SYMBOLS
+KBUILD_EXTRA_SYMBOLS=$(abspath $(VBOXDRM_DIR)/../vboxguest/Module.symvers)
+endif
 
 # We want to build on Linux 3.11 and later and on all EL 7 kernels.