[PATCH] D40934: [cmake] Only pass CMAKE_SYSROOT if non-empty

[Shoaib Meenai via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL320183: [cmake] Only pass CMAKE_SYSROOT if non-empty (authored by smeenai).

Repository:
  rL LLVM

https://reviews.llvm.org/D40934

Files:
  llvm/trunk/cmake/modules/LLVMExternalProjectUtils.cmake


Index: llvm/trunk/cmake/modules/LLVMExternalProjectUtils.cmake
===================================================================
--- llvm/trunk/cmake/modules/LLVMExternalProjectUtils.cmake
+++ llvm/trunk/cmake/modules/LLVMExternalProjectUtils.cmake
@@ -132,6 +132,10 @@
     set(exclude EXCLUDE_FROM_ALL 1)
   endif()
 
+  if(CMAKE_SYSROOT)
+    set(sysroot_arg -DCMAKE_SYSROOT=${CMAKE_SYSROOT})
+  endif()
+
   ExternalProject_Add(${name}
     DEPENDS ${ARG_DEPENDS} llvm-config
     ${name}-clobber
@@ -143,7 +147,7 @@
     CMAKE_ARGS ${${nameCanon}_CMAKE_ARGS}
                ${compiler_args}
                -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
-               -DCMAKE_SYSROOT=${CMAKE_SYSROOT}
+               ${sysroot_arg}
                -DLLVM_BINARY_DIR=${PROJECT_BINARY_DIR}
                -DLLVM_CONFIG_PATH=$<TARGET_FILE:llvm-config>
                -DLLVM_ENABLE_WERROR=${LLVM_ENABLE_WERROR}


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