[CMAKE][c-index-test] Honor CMAKE_OSX_SYSROOT to compute include dir for libxml2

On MacOS, if CMAKE_OSX_SYSROOT is used and the user has command line tools
installed, we currently get the include path for libxml2 as
/usr/include/libxml2, instead of ${CMAKE_OSX_SYSROOT}/usr/include/libxml2.

Make it consistent on MacOS by prefixing ${CMAKE_OSX_SYSROOT} when
possible.

rdar://problem/41103601

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@334747 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/c-index-test/CMakeLists.txt b/tools/c-index-test/CMakeLists.txt
index d38c7bb28709ea3ce34fd53d246296aafad09b05..53e3421f1b354cd645199b64fbea53585c27988e 100644 (file)
--- a/tools/c-index-test/CMakeLists.txt
+++ b/tools/c-index-test/CMakeLists.txt
@@ -40,7 +40,11 @@ set_target_properties(c-index-test
 
 # If libxml2 is available, make it available for c-index-test.
 if (CLANG_HAVE_LIBXML)
-  include_directories(SYSTEM ${LIBXML2_INCLUDE_DIR})
+  if ((CMAKE_OSX_SYSROOT) AND (EXISTS ${CMAKE_OSX_SYSROOT}/${LIBXML2_INCLUDE_DIR}))
+    include_directories(SYSTEM ${CMAKE_OSX_SYSROOT}/${LIBXML2_INCLUDE_DIR})
+  else()
+    include_directories(SYSTEM ${LIBXML2_INCLUDE_DIR})
+  endif()
   target_link_libraries(c-index-test PRIVATE ${LIBXML2_LIBRARIES})
 endif()