diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0491dea8786..91ccbcb2406 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -198,7 +198,7 @@ if (UNBUNDLED OR NOT (OS_LINUX OR APPLE) OR ARCH_32)
 endif ()
 
 # Make this extra-checks for correct library dependencies.
-if (NOT SANITIZE)
+if (OS_LINUX AND NOT SANITIZE)
     set (CMAKE_EXE_LINKER_FLAGS    "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-undefined")
 endif ()
 
diff --git a/dbms/src/Common/StackTrace.h b/dbms/src/Common/StackTrace.h
index b0aa49bce5e..13147587a19 100644
--- a/dbms/src/Common/StackTrace.h
+++ b/dbms/src/Common/StackTrace.h
@@ -9,7 +9,8 @@
 
 #ifdef __APPLE__
 // ucontext is not available without _XOPEN_SOURCE
-#define _XOPEN_SOURCE 700
+#   pragma clang diagnostic ignored "-Wreserved-id-macro"
+#   define _XOPEN_SOURCE 700
 #endif
 #include <ucontext.h>
 
diff --git a/libs/libcommon/CMakeLists.txt b/libs/libcommon/CMakeLists.txt
index 79e3d1fda80..cf1144124e8 100644
--- a/libs/libcommon/CMakeLists.txt
+++ b/libs/libcommon/CMakeLists.txt
@@ -84,7 +84,7 @@ elseif (USE_TCMALLOC)
     endif ()
 elseif (SANITIZE)
     message (STATUS "Will use ${SANITIZE} sanitizer.")
-else ()
+elseif (OS_LINUX)
     message (WARNING "Non default allocator is disabled. This is not recommended for production Linux builds.")
 endif ()