WIP add llvm19 & zstd

[RevySR]

No description provided.

[SwimmingTiger]

I have to uncomment this to build.

all: download/llvm-project-19.1.7.src.tar.xz
	# rm -rf temp build
	# mkdir -p temp build
	# cd temp && tar xvf ../download/llvm-project-19.1.7.src.tar.xz
	# cd temp/llvm-project-19.1.7.src && mkdir -p build

[RevySR]

这几行要取消注释要不然用不了

I have to uncomment this to build.

all: download/llvm-project-19.1.7.src.tar.xz
	# rm -rf temp build
	# mkdir -p temp build
	# cd temp && tar xvf ../download/llvm-project-19.1.7.src.tar.xz
	# cd temp/llvm-project-19.1.7.src && mkdir -p build

clang现在编译出来之后找不到gcc_s/compiler-rt 所以先挂着 而且在改动态链接的时候遇到了困难

[SwimmingTiger]

可以试试模仿 command-line-tools/sdk/default/openharmony/native/llvm/bin/aarch64-unknown-linux-ohos-clang的调用方法，指定-target、-D__MUSL__和--sysroot：

#!/bin/sh

SOURCE=$(dirname -- "$( readlink -f -- "$0"; )")

exec $SOURCE/clang \
  -target aarch64-linux-ohos \
  --sysroot=$SOURCE/../../sysroot \
  -D__MUSL__ \
  "$@"