Provide sysroot binary in Release pages about chromium

[Chilledheart]

cc @ClarkWang-2013

[ClarkWang-2013]

@Chilledheart 感谢您的反馈，我们计划放到ftp上，github说明中附上链接地址

[Chilledheart]

@ClarkWang-2013 放在Github 上面是方便Github Action上下载跑自动化测试CI。希望后续能随着chromium能定期更新

[Chilledheart]

Thanks for the update!

通过新的链接地址 我已经能下载debian_bullseye_loong64-sysroot.tar.bz2了。
但是这里提供的版本是和其他通过龙芯官网下载的一样是ABI 0 的版本。这个版本是无法和上游的clang 编译结果进行链接的。

具体错误 如下图所示：

I0430 13:40:48.538988   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o: unsupported object file ABI version
I0430 13:40:48.538995   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/crti.o: unsupported object file ABI version
I0430 13:40:48.538997   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/gcc/loongarch64-linux-gnu/8/crtbeginS.o: unsupported object file ABI version
I0430 13:40:48.539000   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/libc_nonshared.a(elf-init.oS): unsupported object file ABI version
I0430 13:40:48.539003   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/libc_nonshared.a(pthread_atfork.oS): unsupported object file ABI version
I0430 13:40:48.539006   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/gcc/loongarch64-linux-gnu/8/crtendS.o: unsupported object file ABI version
I0430 13:40:48.539010   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/crtn.o: unsupported object file ABI version
I0430 13:40:48.539018   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/libc_nonshared.a(pthread_atfork.oS):(function __pthread_atfork: .text+0x0): unknown relocation (22) against symbol __dso_handle
I0430 13:40:48.539021   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/gcc/loongarch64-linux-gnu/8/crtbeginS.o:(.text+0xc): unknown relocation (22) against symbol __TMC_LIST__
I0430 13:40:48.539025   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/gcc/loongarch64-linux-gnu/8/crtbeginS.o:(.text+0xc): unknown relocation (23) against symbol
I0430 13:40:48.539029   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (22) against symbol _GLOBAL_OFFSET_TABLE_
I0430 13:40:48.539036   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (25) against symbol main
I0430 13:40:48.539040   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (35) against symbol
I0430 13:40:48.539042   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (22) against symbol _GLOBAL_OFFSET_TABLE_
I0430 13:40:48.539045   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (25) against symbol main
I0430 13:40:48.539048   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (35) against symbol
I0430 13:40:48.539051   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(function _start: .text+0x4): unknown relocation (23) against symbol
I0430 13:40:48.539057   14456 build.go:688] ld.lld: error: relocation R_LARCH_64 cannot be used against symbol 'L0'; recompile with -fPIC
I0430 13:40:48.539060   14456 build.go:688] >>> defined in /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o
I0430 13:40:48.539062   14456 build.go:688] >>> referenced by /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/Scrt1.o:(.eh_frame+0x1C)
I0430 13:40:48.539065   14456 build.go:688]
I0430 13:40:48.539068   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/loongarch64-linux-gnu/libc_nonshared.a(pthread_atfork.oS):(function __pthread_atfork: .text+0x0): unknown relocation (23) against symbol
I0430 13:40:48.539071   14456 build.go:688] ld.lld: error: /home/hky/yass-develop/debian_bullseye_loongarch64-sysroot/usr/lib/gcc/loongarch64-linux-gnu/8/crtbeginS.o:(.text+0xc): unknown relocation (34) against symbol
I0430 13:40:48.539074   14456 build.go:688] ld.lld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)
I0430 13:40:48.539076   14456 build.go:688] clang++: error: linker command failed with exit code 1 (use -v to see invocation)

但是build-tools 提供的sysroot tarball 是可以和上游的clang编译的结果链接的（ABI version1）：
CLFS-loongarch64-8.1-x86_64-cross-tools-gcc-glibc.tar.xz

比如这个 https://github.com/Chilledheart/yass/actions/runs/8889250911/job/24407334808

[Chilledheart]

由于各种原因（依赖最新的libc++需要至少clang 17），所以我用的clang 是上游的版本（trunk, clang 19）

➜  yass-develop git:(develop) ./third_party/llvm-build/Release+Asserts/bin/clang -v
clang version 19.0.0git (https://chromium.googlesource.com/a/external/github.com/llvm/llvm-project ab037c4ff3452a680efb758ccacb6ee210ce333b)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/hky/yass-develop/third_party/llvm-build/Release+Asserts/bin
Selected GCC installation: /usr/lib/gcc/x86_64-pc-linux-gnu/13
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64

[Chilledheart]

@ClarkWang-2013

[ClarkWang-2013]

@Chilledheart 你是想构建新世界吗？如果是需要下载debian_bullseye_loongarch64-sysroot.tar.bz2 http://ftp.loongnix.cn/browser/build/sysroot/debian_bullseye_loongarch64-sysroot.tar.bz2

[Chilledheart]

@Chilledheart 你是想构建新世界吗？如果是需要下载debian_bullseye_loongarch64-sysroot.tar.bz2 http://ftp.loongnix.cn/browser/build/sysroot/debian_bullseye_loongarch64-sysroot.tar.bz2

好的，我试试

[ClarkWang-2013]

@Chilledheart 你是想构建新世界吗？如果是需要下载debian_bullseye_loongarch64-sysroot.tar.bz2 http://ftp.loongnix.cn/browser/build/sysroot/debian_bullseye_loongarch64-sysroot.tar.bz2

好的，我试试

嗯，构建配置有新旧世界构建区分的，还请仔细查看下，以免下错编译器和sysroot以及对应的patch

[Chilledheart]

➜  build-linux-loongarch64 git:(develop) ~/yass-develop/third_party/llvm-build/Release+Asserts/bin/llvm-readobj -h yass

File: yass
Format: elf64-loongarch
Arch: loongarch64
AddressSize: 64bit
LoadName: <Not found>
ElfHeader {
  Ident {
    Magic: (7F 45 4C 46)
    Class: 64-bit (0x2)
    DataEncoding: LittleEndian (0x1)
    FileVersion: 1
    OS/ABI: SystemV (0x0)
    ABIVersion: 0
    Unused: (00 00 00 00 00 00 00)
  }
  Type: SharedObject (0x3)
  Machine: EM_LOONGARCH (0x102)
  Version: 1
  Entry: 0xDF620
  ProgramHeaderOffset: 0x40
  SectionHeaderOffset: 0x1F904E0
  Flags [ (0x43)
    EF_LOONGARCH_ABI_DOUBLE_FLOAT (0x3)
    EF_LOONGARCH_OBJABI_V1 (0x40)
  ]
  HeaderSize: 64
  ProgramHeaderEntrySize: 56
  ProgramHeaderCount: 12
  SectionHeaderEntrySize: 64
  SectionHeaderCount: 45
  StringTableSectionIndex: 43
}

@ClarkWang-2013 谢谢，新世界的sysroot已经可以用了。