From a55d4aa59140d1acab2db89eebb7acbb91f960c6 Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Sat, 13 Jun 2020 10:38:34 -0700
Subject: [PATCH] Example-Projects: update Linux kernel

---
 Example-Projects.md | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

diff --git a/Example-Projects.md b/Example-Projects.md
index f32c1bc..9bf012b 100644
--- a/Example-Projects.md
+++ b/Example-Projects.md
@@ -1,13 +1,32 @@
 ## Linux kernel
 
-defconfig
+LLVM=1 enables a full set of LLVM tools: clang, llvm-objcopy, llvm-objdump, llvm-nm, etc.
 
 ```sh
 # Use clang 9 or newer.
-make O=out.x86_64 CC=/path/to/clang defconfig
-make O=out.x86_64 CC=/path/to/clang # generate .<target>.cmd files
-scripts/gen_compile_commands.py -d out.x86_64
-ln -s out.x86_64/compile_commands.json
+make O=/tmp/out/x86_64 ARCH=x86_64 LLVM=1 defconfig
+make O=/tmp/out/x86_64 ARCH=x86_64 LLVM=1 -k bzImage modules  # generate .<target>.cmd files
+
+scripts/gen_compile_commands.py -d /tmp/out/x86_64
+ln -s /tmp/out/x86_64/compile_commands.json
+```
+
+For older kernel (before http://git.kernel.org/linus/a0d1c951ef08ed24f35129267e3595d86f57f5d3), use
+```
+make O=/tmp/out/x86_64 CC=/path/to/clang defconfig
+make O=/tmp/out/x86_64 CC=/path/to/clang bzImage modules # generate .<target>.cmd files
+```
+
+For other architectures:
+```sh
+make O=/tmp/out/arm ARCH=arm CROSS_COMPILE=arm-linux-gnu- LLVM=1 defconfig
+make O=/tmp/out/arm ARCH=arm CROSS_COMPILE=arm-linux-gnu- LLVM=1 -k zImage modules
+
+make O=/tmp/out/arm64 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- LLVM=1 defconfig
+make O=/tmp/out/arm64 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- LLVM=1 -k Image.gz modules
+
+make O=/tmp/out/powerpc ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- LLVM=1 powernv_defconfig
+make O=/tmp/out/powerpc ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- LLVM=1 -k zImage.epapr modules
 ```
 
 <small>2019-11-09: ARCH=x86_64 defconfig => 1.4G .ccls-cache</small>