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diff --git a/src/ly_config.h.in b/src/ly_config.h.in
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+++ b/src/ly_config.h.in
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+/**
+ * @file ly_config.h
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @uathor Michal Vasko <mvasko@cesnet.cz>
+ * @brief Various variables provided by cmake and compile time options.
+ *
+ * Copyright (c) 2021 - 2024 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#ifndef LY_CONFIG_H_
+#define LY_CONFIG_H_
+
+#ifdef _WIN32
+/* headers are broken on Windows, which means that some of them simply *have* to come first */
+# include <winsock2.h>
+# include <ws2tcpip.h>
+#endif
+
+/** size of fixed_mem in lyd_value, minimum is 8 (B) */
+#define LYD_VALUE_FIXED_MEM_SIZE @LYD_VALUE_SIZE@
+
+/** plugins */
+#define LYPLG_SUFFIX "@CMAKE_SHARED_MODULE_SUFFIX@"
+#define LYPLG_SUFFIX_LEN (sizeof LYPLG_SUFFIX - 1)
+#define LYPLG_TYPE_DIR "@PLUGINS_DIR_TYPES@"
+#define LYPLG_EXT_DIR "@PLUGINS_DIR_EXTENSIONS@"
+
+/** atomic compiler operations, to be able to use uint32_t */
+#ifndef _WIN32
+# define LY_ATOMIC_INC_BARRIER(var) __sync_fetch_and_add(&(var), 1)
+# define LY_ATOMIC_DEC_BARRIER(var) __sync_fetch_and_sub(&(var), 1)
+#else
+#  include <windows.h>
+# define LY_ATOMIC_INC_BARRIER(var) InterlockedExchangeAdd(&(var), 1)
+# define LY_ATOMIC_DEC_BARRIER(var) InterlockedExchangeAdd(&(var), -1)
+#endif
+
+/** printf compiler attribute */
+#ifdef __GNUC__
+# define _FORMAT_PRINTF(FORM, ARGS) __attribute__((format (printf, FORM, ARGS)))
+#else
+# define _FORMAT_PRINTF(FORM, ARGS)
+#endif
+
+/** Exporting symbols to a shared library and importing back afterwards
+ *
+ * - use LIBYANG_API_DECL to mark a declaration in the public header
+ * - use LIBYANG_API_DEF to mark a definition (in the source code for the actual implementaiton)
+ * */
+#ifdef _MSC_VER
+#  ifndef STATIC
+#    define LIBYANG_API_DEF __declspec(dllexport)
+#    ifdef LIBYANG_BUILD
+#      define LIBYANG_API_DECL __declspec(dllexport)
+#    else
+#      define LIBYANG_API_DECL __declspec(dllimport)
+#    endif
+#  endif
+#else
+/*
+ * If the compiler supports attribute to mark objects as hidden, mark all
+ * objects as hidden and export only objects explicitly marked to be part of
+ * the public API.
+ */
+#  define LIBYANG_API_DEF __attribute__((visibility("default")))
+#  define LIBYANG_API_DECL
+#endif
+
+#endif /* LY_CONFIG_H_ */