- added -Wundef compiler flag and removed some of the resulting warnings

CMakeLists.txt

@@ -144,6 +144,11 @@ if (SUPPORT_REDUNDANT_DECLS)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wredundant-decls")
 endif(SUPPORT_REDUNDANT_DECLS)
 
+check_c_compiler_flag("-Wundef" SUPPORT_UNDEF)
+if (SUPPORT_UNDEF)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wundef")
+endif(SUPPORT_UNDEF)
+
 # write the detected stuff to this file
 configure_file(
     ${CMAKE_CURRENT_LIST_DIR}/config/stack_config.h.cmake

src/iec61850/client/client_control.c

@@ -29,7 +29,7 @@
 #include "mms_client_connection.h"
 #include "ied_connection_private.h"
 
-#if _MSC_VER
+#ifdef _MSC_VER
 #define snprintf _snprintf
 #endif
 

src/mms/iso_mms/asn1c/asn_internal.h

@@ -11,6 +11,8 @@
 
 #include "asn_application.h"	/* Application-visible API */
 
+#define EMIT_ASN_DEBUG 0
+
 #include "lib_memory.h"
 
 #ifndef	__NO_ASSERT_H__		/* Include assert.h only for internal use. */