[clang] [Fuchsia][CMake] Set output name for libc++ shared library (PR #111791)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Petr Hosek (petrhosek)

<details>
<summary>Changes</summary>

This is a dependency of #<!-- -->80007.

---
Full diff: https://github.com/llvm/llvm-project/pull/111791.diff


1 Files Affected:

- (modified) clang/cmake/caches/Fuchsia-stage2.cmake (+2) 


``````````diff
diff --git a/clang/cmake/caches/Fuchsia-stage2.cmake b/clang/cmake/caches/Fuchsia-stage2.cmake
index 26ae30c71b4df3..5af98c7b3b3fba 100644
--- a/clang/cmake/caches/Fuchsia-stage2.cmake
+++ b/clang/cmake/caches/Fuchsia-stage2.cmake
@@ -345,6 +345,7 @@ foreach(target armv6m-none-eabi;armv7m-none-eabi;armv8m.main-none-eabi)
   set(RUNTIMES_${target}_LIBCXX_CXX_ABI none CACHE STRING "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_STATIC ON CACHE BOOL "")
+  set(RUNTIMES_${target}_LIBCXX_SHARED_OUTPUT_NAME "c++-shared" CACHE STRING "")
   set(RUNTIMES_${target}_LIBCXX_LIBC "llvm-libc" CACHE STRING "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_FILESYSTEM OFF CACHE BOOL "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_RANDOM_DEVICE OFF CACHE BOOL "")
@@ -396,6 +397,7 @@ foreach(target riscv32-unknown-elf)
   set(RUNTIMES_${target}_LIBCXX_CXX_ABI none CACHE STRING "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_STATIC ON CACHE BOOL "")
+  set(RUNTIMES_${target}_LIBCXX_SHARED_OUTPUT_NAME "c++-shared" CACHE STRING "")
   set(RUNTIMES_${target}_LIBCXX_LIBC "llvm-libc" CACHE STRING "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_FILESYSTEM OFF CACHE BOOL "")
   set(RUNTIMES_${target}_LIBCXX_ENABLE_RANDOM_DEVICE OFF CACHE BOOL "")

``````````

</details>


https://github.com/llvm/llvm-project/pull/111791