Cross-compiling Zig dynamic library from windows-x86_64 to windows-i386 fails to link

[alexrp]

$ zig env
{
 "zig_exe": "C:\\Users\\alex\\scoop\\apps\\ziglang\\current\\zig.exe",
 "lib_dir": "C:\\Users\\alex\\scoop\\apps\\ziglang\\current\\lib",
 "std_dir": "C:\\Users\\alex\\scoop\\apps\\ziglang\\current\\lib\\std",
 "global_cache_dir": "C:\\Users\\alex\\AppData\\Local\\zig",
 "version": "0.8.0"
}
$ zig targets | jq .native
{
  "triple": "x86_64-windows.win10_fe...win10_fe-gnu",
  "cpu": {
    "arch": "x86_64",
    "name": "skylake",
    "features": [
      "64bit",
      "adx",
      "aes",
      "avx",
      "avx2",
      "bmi",
      "bmi2",
      "clflushopt",
      "cmov",
      "cx16",
      "cx8",
      "ermsb",
      "f16c",
      "false_deps_popcnt",
      "fast_15bytenop",
      "fast_gather",
      "fast_scalar_fsqrt",
      "fast_shld_rotate",
      "fast_variable_shuffle",
      "fast_vector_fsqrt",
      "fma",
      "fsgsbase",
      "fxsr",
      "idivq_to_divl",
      "invpcid",
      "lzcnt",
      "macrofusion",
      "mmx",
      "movbe",
      "nopl",
      "pclmul",
      "popcnt",
      "prfchw",
      "rdrnd",
      "rdseed",
      "sahf",
      "slow_3ops_lea",
      "sse",
      "sse2",
      "sse3",
      "sse4_1",
      "sse4_2",
      "ssse3",
      "vzeroupper",
      "x87",
      "xsave",
      "xsavec",
      "xsaveopt",
      "xsaves"
    ]
  },
  "os": "windows",
  "abi": "gnu"
}
$ zig libc
# The directory that contains `stdlib.h`.
# On POSIX-like systems, include directories be found with: `cc -E -Wp,-v -xc /dev/null`
include_dir=C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\ucrt

# The system-specific include directory. May be the same as `include_dir`.
# On Windows it's the directory that includes `vcruntime.h`.
# On POSIX it's the directory that includes `sys/errno.h`.
sys_include_dir=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30037\include

# The directory that contains `crt1.o` or `crt2.o`.
# On POSIX, can be found with `cc -print-file-name=crt1.o`.
# Not needed when targeting MacOS.
crt_dir=C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0\ucrt\x64

# The directory that contains `vcruntime.lib`.
# Only needed when targeting MSVC on Windows.
msvc_lib_dir=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30037\lib\x64\

# The directory that contains `kernel32.lib`.
# Only needed when targeting MSVC on Windows.
kernel32_lib_dir=C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0\um\x64

# The directory that contains `crtbeginS.o` and `crtendS.o`
# Only needed when targeting Haiku.
gcc_dir=
$ touch foo.zig
$ zig build-lib -dynamic -target i386-windows-gnu lib.zig
lld-link: error: <root>: undefined symbol: _DllMainCRTStartup@12
lld-link: error: <root>: undefined symbol: _tls_index
lld-link: error: <root>: undefined symbol: _tls_start
lld-link: error: <root>: undefined symbol: _tls_end
lld-link: error: <root>: undefined symbol: __xl_a
lld-link: error: <root>: undefined symbol: __xl_z
lld-link: error: <root>: undefined symbol: _tls_used
error: LLDReportedFailure

I'm not sure if this is a Zig bug or if I'm just missing some external dependency.

[alexrp]

Appears to be a duplicate of #8531 as disabling LTO makes it work.