Update 6.8.1 + Clang by default

kernel.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
-UPDATED="2024-03-11"
+UPDATED="2024-03-16"
 
 DISABLE=1        # disable some options
 ENABLE=1         # enable some options
 MITIGATIONS=0    # enable/disable all mitigations
 UARCH=1          # apply more uarch patch
 FKH=0            # apply fast kernel headers patch
-CLANG=0          # use Clang compiler (if not, use GCC)
+CLANG=1          # use Clang compiler (if not, use GCC)
 O3=1             # use -O3 vs -O2 (optimisation)
 ARCH="x86-64-v4" # target architecture (uarch patch)
 CONFIGCLOUD=1    # enable cloud 'from' config
@@ -25,9 +25,9 @@ TESTING=0        # add testing options
 
 # config-cloud-amd64:
 #   https://packages.debian.org/source/sid/linux
-#       linux-image-6.6.9-cloud-amd64-unsigned
+#       linux-image-6.7.9-cloud-amd64-unsigned
 #   Go down to download section, select amd64 and download deb.
-#   Open .deb with archiver, browse to boot folder and grab 'config-6.6.9-cloud-amd64'.
+#   Open .deb with archiver, browse to boot folder and grab 'config-6.7.9-cloud-amd64'.
 #
 
 # more-uarches-for-kernel.patch:
@@ -206,9 +206,9 @@ doCleanup() {
 
         doEchoStep "Cleanup"
         if [ "$CLANG" == "1" ]; then
-            make -j${NPROC} LLVM=1 CC="ccache clang" mrproper
+            make -j${NPROC} LLVM=1 CC="ccache clang" distclean
         else
-            make -j${NPROC} CC="ccache gcc" mrproper
+            make -j${NPROC} CC="ccache gcc" distclean
         fi
         result=$?
         if [ ! result==0 ]; then
@@ -672,8 +672,6 @@ doDefaultsDisable() {
         ./scripts/config --disable CONFIG_VIRT_CPU_ACCOUNTING_GEN
         ./scripts/config --disable CONFIG_TASKSTATS
         ./scripts/config --disable CONFIG_PSI
-        ./scripts/config --disable CONFIG_KALLSYMS
-        ./scripts/config --disable CONFIG_KALLSYMS_ALL
         ./scripts/config --disable CONFIG_SCHED_MC
         ./scripts/config --disable CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS
         ./scripts/config --disable CONFIG_INIT_ON_ALLOC_DEFAULT_ON
@@ -707,6 +705,16 @@ doDefaultsEnable() {
         if [ -f .config ]; then
             cp .config .config.enable.before
         fi
+
+        if [ "$CLANG" == "1" ]; then
+            ./scripts/config --enable CONFIG_HAS_LTO_CLANG
+            ./scripts/config --enable CONFIG_ARCH_SUPPORTS_CFI_CLANG
+            ./scripts/config --enable CONFIG_ARCH_SUPPORTS_LTO_CLANG_THIN
+            ./scripts/config --enable CONFIG_ARCH_SUPPORTS_LTO_CLANG
+            ./scripts/config --enable CONFIG_LTO_CLANG_THIN
+            ./scripts/config --enable CONFIG_LTO_CLANG_FULL
+        fi
+
         ./scripts/config --enable CONFIG_ADDRESS_MASKING
         ./scripts/config --enable CONFIG_AF_KCM
         ./scripts/config --enable CONFIG_ARCH_CPUIDLE_HALTPOLL
@@ -1093,6 +1101,8 @@ doDefaultsEnable() {
         ./scripts/config --enable CONFIG_IO_STRICT_DEVMEM
         ./scripts/config --enable CONFIG_IPV6
         ./scripts/config --enable CONFIG_KSM
+        ./scripts/config --enable CONFIG_KALLSYMS
+        ./scripts/config --enable CONFIG_KALLSYMS_ALL
         ./scripts/config --enable CONFIG_COMPILE_TEST
 
         case ${ARCH} in
@@ -1153,7 +1163,11 @@ doDefaults() {
     doFastKernelHeaders
 
     doEchoStep "Define options"
-    ./scripts/config --set-str CONFIG_LOCALVERSION '-zogg'
+    if [ "$CLANG" == "1" ]; then
+        ./scripts/config --set-str CONFIG_LOCALVERSION '-clang'
+    else
+        ./scripts/config --set-str CONFIG_LOCALVERSION '-gcc'
+    fi
 
     doDefaultsDisable
     doDefaultsEnable
@@ -1288,8 +1302,9 @@ doCompile() {
     if [ "$CLANG" == "1" ]; then
         make \
             -j${NPROC} \
-            LLVM=1 \
+            LLVM=1 LLVM_IAS=1 \
             CC='ccache clang' \
+            HOSTCC='ccache clang' \
             bindeb-pkg \
             LOCALVERSION=-"$(dpkg --print-architecture)" \
             KDEB_PKGVERSION="$(make kernelversion)-1"