[PATCH] D88157: [CMake] Make sure _cmake_system_name has a default

[David Tenty via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGc74da051b868: [CMake] Make sure _cmake_system_name has a default (authored by daltenty).

Changed prior to commit:
  https://reviews.llvm.org/D88157?vs=293797&id=294325#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88157/new/

https://reviews.llvm.org/D88157

Files:
  llvm/cmake/modules/LLVMExternalProjectUtils.cmake


Index: llvm/cmake/modules/LLVMExternalProjectUtils.cmake
===================================================================
--- llvm/cmake/modules/LLVMExternalProjectUtils.cmake
+++ llvm/cmake/modules/LLVMExternalProjectUtils.cmake
@@ -52,6 +52,12 @@
     endif()
   endforeach()
 
+  # If CMAKE_SYSTEM_NAME is not set explicitly in the arguments passed to us,
+  # reflect CMake's own default.
+  if (NOT _cmake_system_name)
+    set(_cmake_system_name "${CMAKE_HOST_SYSTEM_NAME}")
+  endif()
+
   if(NOT ARG_TOOLCHAIN_TOOLS)
     set(ARG_TOOLCHAIN_TOOLS clang lld llvm-ar llvm-ranlib llvm-nm llvm-objdump)
     if(_cmake_system_name STREQUAL Darwin)


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