Search for libxml2 on macOS too.

This allows lld-link to process /manifestinput: flags on macOS too.
Also makes the `REQUIRES: manifesttool` lld tests run on macOS.
Setting LLVM_ENABLE_LIBXML2 to off can suppress this behavior, like on Linux.

llvm-svn: 315873

diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index f13e6f7834081ff41f6ead66f6f34a17c49ebee5..7f33591de0c89fdff0fbaeb10f831e8caaee55ce 100644 (file)
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -160,7 +160,7 @@ if( NOT PURE_WINDOWS AND NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
   find_library(ICONV_LIBRARY_PATH NAMES iconv libiconv libiconv-2 c)
   set(LLVM_LIBXML2_ENABLED 0)
   set(LIBXML2_FOUND 0)
-  if((LLVM_ENABLE_LIBXML2) AND (CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH))
+  if((LLVM_ENABLE_LIBXML2) AND ((CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH) OR APPLE))
     find_package(LibXml2)
     if (LIBXML2_FOUND)
       set(LLVM_LIBXML2_ENABLED 1)