[libc++] Make sure we use new/delete from libc++abi on CI for Apple platforms

llvm-svn: 358524
diff --git a/libcxx/utils/ci/macos-trunk.sh b/libcxx/utils/ci/macos-trunk.sh
index de7db0d..588d6c1 100755
--- a/libcxx/utils/ci/macos-trunk.sh
+++ b/libcxx/utils/ci/macos-trunk.sh
@@ -121,6 +121,7 @@
     -DLLVM_PATH="${LLVM_ROOT}" \
     -DCMAKE_INSTALL_PREFIX="${LIBCXX_INSTALL_DIR}" \
     -DLIBCXX_ENABLE_EXCEPTIONS="${LIBCXX_EXCEPTIONS}" \
+    -DLIBCXX_ENABLE_NEW_DELETE_DEFINITIONS=OFF \
     -DLLVM_LIT_ARGS="${LIT_FLAGS}" \
     -DCMAKE_OSX_ARCHITECTURES="i386;x86_64" # Build a universal dylib
 )
@@ -135,6 +136,7 @@
     -DLLVM_PATH="${LLVM_ROOT}" \
     -DCMAKE_INSTALL_PREFIX="${LIBCXXABI_INSTALL_DIR}" \
     -DLIBCXXABI_ENABLE_EXCEPTIONS=ON \
+    -DLIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS=ON \
     -DLLVM_LIT_ARGS="${LIT_FLAGS}" \
     -DCMAKE_OSX_ARCHITECTURES="i386;x86_64" # Build a universal dylib
 )