Add common headers to maxbase

To be included first in all headers. Defined and included common
ground and provides a place when one can affect all code.

maxutils/maxbase/include/maxbase/ccdefs.hh

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
+ *
+ * Change Date: 2020-01-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+#pragma once
+
+/**
+ * @file ccdefs.hh
+ *
+ * This file is to be included first by all C++ headers.
+ */
+
+#if !defined(__cplusplus)
+#error This file is only to be included by C++ code.
+#endif
+
+#include <maxbase/cdefs.h>
+#include <exception>
+#include <new>
+
+/**
+ * All classes of MaxBase are defined in the namespace @c maxbase.
+ */
+namespace maxbase
+{
+}
+
+/**
+ * Shorthand for the @c maxscale namespace.
+ */
+namespace mxb = maxbase;

maxutils/maxbase/include/maxbase/cdefs.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
+ *
+ * Change Date: 2020-01-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+#pragma once
+
+/**
+ * @file cdefs.h
+ *
+ * This file has several purposes.
+ *
+ * - Its purpose is the same as that of x86_64-linux-gnu/sys/cdefs.h, that is,
+ *   it defines things that are dependent upon the compilation environment.
+ * - Since this *must* be included as the very first header by all other MaxScale
+ *   headers, it allows you to redefine things globally, should that be necessary,
+ *   for instance, when debugging something.
+ * - Global constants applicable across the line can be defined here.
+ */
+
+#ifdef  __cplusplus
+# define MXB_BEGIN_DECLS extern "C" {
+# define MXB_END_DECLS   }
+#else
+# define MXB_BEGIN_DECLS
+# define MXB_END_DECLS
+#endif
+
+#undef _GNU_SOURCE
+#define _GNU_SOURCE 1
+
+#undef OPENSSL_THREAD_DEFINES
+#define OPENSSL_THREAD_DEFINES 1
+
+/**
+ * Fix compile errors for PRId64
+ * in Centos 6
+ */
+#ifndef __STDC_FORMAT_MACROS
+# define __STDC_FORMAT_MACROS
+#endif
+
+/**
+ * Needs to be defined for INT32_MAX and others
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS
+#endif
+
+/**
+ * Define function attributes
+ *
+ * The function attributes are compiler specific.
+ */
+#ifdef __GNUC__
+#define mxb_attribute(a) __attribute__(a)
+#else
+#define mxb_attribute(a)
+#endif
+
+/**
+ * COMMON INCLUDE FILES
+ */
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>

maxutils/maxbase/include/maxbase/eventcount.hh

@@ -13,6 +13,7 @@
 
 #pragma once
 
+#include <maxbase/ccdefs.hh>
 #include <maxbase/stopwatch.hh>
 #include <iosfwd>
 #include <vector>

maxutils/maxbase/include/maxbase/stopwatch.hh

@@ -12,6 +12,7 @@
  */
 #pragma once
 
+#include <maxbase/ccdefs.hh>
 #include <chrono>
 #include <iosfwd>
 #include <string>