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| -rw-r--r-- | README.md | 3 | ||||
| -rw-r--r-- | patch-dkms-for-llvm-clang-support.patch | 25 |
2 files changed, 28 insertions, 0 deletions
diff --git a/README.md b/README.md index 351dbabe9bc2..15111ccbc71b 100644 --- a/README.md +++ b/README.md @@ -128,6 +128,9 @@ See the project commit log for full version history and changes. DKMS modules fail to build you'll want to re-build your kernel package to update your kernel headers, modules should build successfully after. + See the included [patch-dkms-for-llvm-clang-support.patch](patch-dkms-for-llvm-clang-support.patch) if you'd like + to add support for Clang to DKMS on your machine. + - Building with `-O3` compiler optimization is supported, though the performance gain over `-O2 -march=native` or Clang ThinLTO is slim. diff --git a/patch-dkms-for-llvm-clang-support.patch b/patch-dkms-for-llvm-clang-support.patch new file mode 100644 index 000000000000..02ae95d93b06 --- /dev/null +++ b/patch-dkms-for-llvm-clang-support.patch @@ -0,0 +1,25 @@ +--- a/dkms 2021-11-16 05:26:18.292805661 -0800 ++++ b/dkms 2021-11-16 05:26:23.014733213 -0800 +@@ -571,6 +571,22 @@ + make_command="${MAKE[$index]}" + done + ++ ## https://github.com/dell/dkms/issues/124#issuecomment-960709722 ++ ++ # overkill LLVM tools specification: ++ clangopts=( "CC=clang" "LD=ld.lld" "AR=llvm-ar" "NM=llvm-nm" \ ++ "RANLIB=llvm-ranlib" "STRIP=llvm-strip" "OBJCOPY=llvm-objcopy" \ ++ "OBJDUMP=llvm-objdump" "READOBJ=llvm-readobj LLVM=1 LLVM_IAS=1") ++ ++ if [[ -e $kernel_source_dir/vmlinux ]]; then ++ if readelf -p .comment $kernel_source_dir/vmlinux | grep -q clang; then ++ make_command="${clangopts[@]} ${make_command}" ++ #echo -n " (using llvm tools from $(which clang))" >&2 ++ fi ++ fi ++ ++ # see also: https://git.io/JXzyo ++ + # Use the generic make and make clean commands if not specified + [[ ! $make_command ]] && make_command="make -C $kernel_source_dir M=$dkms_tree/$module/$module_version/build" + [[ ! $clean ]] && clean="make -C $kernel_source_dir M=$dkms_tree/$module/$module_version/build clean" |