toolchains: add proton clang

toolchains/Proton-Clang.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+maindir="$(pwd)"
+outside="${maindir}/.."
+
+dir="${outside}/proton-clang-master"
+
+case $1 in
+    "setup" )
+        # Clone compiler
+        if [[ ! -d "${dir}" ]]; then
+	  curl -Lo a.tar.gz "https://github.com/kdrag0n/proton-clang/archive/master.tar.gz"
+	  tar -zxf a.tar.gz
+        fi
+    ;;
+
+    "build" )
+        export PATH="${dir}/bin:/usr/bin:${PATH}"
+        make -j$(nproc --all) O=out ARCH=arm64 SUBARCH=arm64 $2
+        make -j$(nproc --all) O=out \
+            CROSS_COMPILE="aarch64-linux-gnu-" \
+            CROSS_COMPILE_ARM32="arm-linux-gnueabi-" \
+            CROSS_COMPILE_COMPAT="arm-linux-gnueabi-" \
+            CC=clang \
+            LD=ld.lld \
+            NM=llvm-nm \
+            AR=llvm-ar \
+            STRIP=llvm-strip \
+            OBJCOPY=llvm-objcopy \
+            OBJDUMP=llvm-objdump \
+            READELF=llvm-readelf \
+            LLVM_IAS=1 \
+            HOSTCC=clang \
+            HOSTCXX=clang++ \
+            HOSTLD=ld.lld \
+            HOSTAR=llvm-ar \
+            2>&1 | tee ${CUR_TOOLCHAIN}.log
+    ;;
+esac