[clang] [Fuchsia] Disable libcxx timezone database (PR #65870)

[Alex Brachet via cfe-commits]

https://github.com/abrachet created https://github.com/llvm/llvm-project/pull/65870:

tzdb is currently broken when cross compiling from non Linux to Linux. Lets just disable it totally in our toolchain for now. We should remove this when #65859 lands.

>From b75d844d09076f2a7f170454782662cfebd7d16e Mon Sep 17 00:00:00 2001
From: Alex Brachet <abrachet at google.com>
Date: Sat, 9 Sep 2023 23:16:21 -0400
Subject: [PATCH] [Fuchsia] Disable libcxx timezone database

tzdb is currently broken when cross compiling from non Linux
to Linux. Lets just disable it totally in our toolchain for now.
We should remove this when #65859 lands.
---
 clang/cmake/caches/Fuchsia-stage2.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clang/cmake/caches/Fuchsia-stage2.cmake b/clang/cmake/caches/Fuchsia-stage2.cmake
index 4890040b1b6a2b4..10e5cacf51c4b7b 100644
--- a/clang/cmake/caches/Fuchsia-stage2.cmake
+++ b/clang/cmake/caches/Fuchsia-stage2.cmake
@@ -181,6 +181,9 @@ foreach(target aarch64-unknown-linux-gnu;armv7-unknown-linux-gnueabihf;i386-unkn
     set(RUNTIMES_${target}_LLVM_TOOLS_DIR "${CMAKE_BINARY_DIR}/bin" CACHE BOOL "")
     set(RUNTIMES_${target}_LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
 
+    # TODO: Remove this once #65859 lands.
+    set(RUNTIMES_${target}_LIBCXX_ENABLE_TIME_ZONE_DATABASE OFF CACHE STRING "")
+
     # Use .build-id link.
     list(APPEND RUNTIME_BUILD_ID_LINK "${target}")
   endif()