[PATCH] D56479: [compiler-rt] Add option to disable libc++ build

[Shoaib Meenai via Phabricator via llvm-commits]

smeenai updated this revision to Diff 181624.
smeenai edited the summary of this revision.
smeenai added a comment.

Default to ON


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56479/new/

https://reviews.llvm.org/D56479

Files:
  compiler-rt/CMakeLists.txt


Index: compiler-rt/CMakeLists.txt
===================================================================
--- compiler-rt/CMakeLists.txt
+++ compiler-rt/CMakeLists.txt
@@ -428,15 +428,19 @@
 
 add_subdirectory(include)
 
-foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxx
-                      ${LLVM_MAIN_SRC_DIR}/runtimes/libcxx
-                      ${LLVM_MAIN_SRC_DIR}/../libcxx
-                      ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR})
-  if(IS_DIRECTORY ${path})
-    set(COMPILER_RT_LIBCXX_PATH ${path})
-    break()
-  endif()
-endforeach()
+option(COMPILER_RT_USE_LIBCXX
+  "Enable compiler-rt to use libc++ from the source tree" ON)
+if(COMPILER_RT_USE_LIBCXX)
+  foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxx
+                        ${LLVM_MAIN_SRC_DIR}/runtimes/libcxx
+                        ${LLVM_MAIN_SRC_DIR}/../libcxx
+                        ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR})
+    if(IS_DIRECTORY ${path})
+      set(COMPILER_RT_LIBCXX_PATH ${path})
+      break()
+    endif()
+  endforeach()
+endif()
 
 set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld)
 if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD)


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