--- CMakeLists.txt.orig	2020-06-06 10:59:21.000000000 -0400
+++ CMakeLists.txt	2020-06-06 11:01:08.000000000 -0400
@@ -89,14 +89,14 @@
     add_definitions(-DWIN32)
 elseif (APPLE)
 	message("Target OS     : Mac OS X")
-	# to be compatible back to Mac OS X 10.7
-	if (IQTREE_FLAGS MATCHES "oldmac")
-		add_definitions("-mmacosx-version-min=10.5")
-		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -mmacosx-version-min=10.5")
-	else()
-		add_definitions("-mmacosx-version-min=10.7")
-		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -mmacosx-version-min=10.7")
-	endif()
+    ##	# to be compatible back to Mac OS X 10.7
+    ##	if (IQTREE_FLAGS MATCHES "oldmac")
+    ##		add_definitions("-mmacosx-version-min=10.5")
+    ##		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -mmacosx-version-min=10.5")
+    ##	else()
+    ##		add_definitions("-mmacosx-version-min=10.7")
+    ##		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -mmacosx-version-min=10.7")
+    ##	endif()
     SET(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
 elseif (UNIX)
 	message("Target OS     : Unix")