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diff --git a/src/liblzma/api/lzma/version.h b/src/liblzma/api/lzma/version.h
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+++ b/src/liblzma/api/lzma/version.h
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+/**
+ * \file        lzma/version.h
+ * \brief       Version number
+ * \note        Never include this file directly. Use <lzma.h> instead.
+ */
+
+/*
+ * Author: Lasse Collin
+ *
+ * This file has been put into the public domain.
+ * You can do whatever you want with this file.
+ */
+
+#ifndef LZMA_H_INTERNAL
+#	error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/** \brief Major version number of the liblzma release. */
+#define LZMA_VERSION_MAJOR 5
+
+/** \brief Minor version number of the liblzma release. */
+#define LZMA_VERSION_MINOR 4
+
+/** \brief Patch version number of the liblzma release. */
+#define LZMA_VERSION_PATCH 5
+
+/**
+ * \brief Version stability marker
+ *
+ * This will always be one of three values:
+ *   - LZMA_VERSION_STABILITY_ALPHA
+ *   - LZMA_VERSION_STABILITY_BETA
+ *   - LZMA_VERSION_STABILITY_STABLE
+ */
+#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_STABLE
+
+/** \brief Commit version number of the liblzma release */
+#ifndef LZMA_VERSION_COMMIT
+#	define LZMA_VERSION_COMMIT ""
+#endif
+
+
+/*
+ * Map symbolic stability levels to integers.
+ */
+#define LZMA_VERSION_STABILITY_ALPHA 0
+#define LZMA_VERSION_STABILITY_BETA 1
+#define LZMA_VERSION_STABILITY_STABLE 2
+
+
+/**
+ * \brief       Compile-time version number
+ *
+ * The version number is of format xyyyzzzs where
+ *  - x = major
+ *  - yyy = minor
+ *  - zzz = revision
+ *  - s indicates stability: 0 = alpha, 1 = beta, 2 = stable
+ *
+ * The same xyyyzzz triplet is never reused with different stability levels.
+ * For example, if 5.1.0alpha has been released, there will never be 5.1.0beta
+ * or 5.1.0 stable.
+ *
+ * \note        The version number of liblzma has nothing to with
+ *              the version number of Igor Pavlov's LZMA SDK.
+ */
+#define LZMA_VERSION (LZMA_VERSION_MAJOR * UINT32_C(10000000) \
+		+ LZMA_VERSION_MINOR * UINT32_C(10000) \
+		+ LZMA_VERSION_PATCH * UINT32_C(10) \
+		+ LZMA_VERSION_STABILITY)
+
+
+/*
+ * Macros to construct the compile-time version string
+ */
+#if LZMA_VERSION_STABILITY == LZMA_VERSION_STABILITY_ALPHA
+#	define LZMA_VERSION_STABILITY_STRING "alpha"
+#elif LZMA_VERSION_STABILITY == LZMA_VERSION_STABILITY_BETA
+#	define LZMA_VERSION_STABILITY_STRING "beta"
+#elif LZMA_VERSION_STABILITY == LZMA_VERSION_STABILITY_STABLE
+#	define LZMA_VERSION_STABILITY_STRING ""
+#else
+#	error Incorrect LZMA_VERSION_STABILITY
+#endif
+
+#define LZMA_VERSION_STRING_C_(major, minor, patch, stability, commit) \
+		#major "." #minor "." #patch stability commit
+
+#define LZMA_VERSION_STRING_C(major, minor, patch, stability, commit) \
+		LZMA_VERSION_STRING_C_(major, minor, patch, stability, commit)
+
+
+/**
+ * \brief       Compile-time version as a string
+ *
+ * This can be for example "4.999.5alpha", "4.999.8beta", or "5.0.0" (stable
+ * versions don't have any "stable" suffix). In future, a snapshot built
+ * from source code repository may include an additional suffix, for example
+ * "4.999.8beta-21-g1d92". The commit ID won't be available in numeric form
+ * in LZMA_VERSION macro.
+ */
+#define LZMA_VERSION_STRING LZMA_VERSION_STRING_C( \
+		LZMA_VERSION_MAJOR, LZMA_VERSION_MINOR, \
+		LZMA_VERSION_PATCH, LZMA_VERSION_STABILITY_STRING, \
+		LZMA_VERSION_COMMIT)
+
+
+/* #ifndef is needed for use with windres (MinGW-w64 or Cygwin). */
+#ifndef LZMA_H_INTERNAL_RC
+
+/**
+ * \brief       Run-time version number as an integer
+ *
+ * This allows an application to compare if it was built against the same,
+ * older, or newer version of liblzma that is currently running.
+ *
+ * \return The value of LZMA_VERSION macro at the compile time of liblzma
+ */
+extern LZMA_API(uint32_t) lzma_version_number(void)
+		lzma_nothrow lzma_attr_const;
+
+
+/**
+ * \brief       Run-time version as a string
+ *
+ * This function may be useful to display which version of liblzma an
+ * application is currently using.
+ *
+ * \return      Run-time version of liblzma
+ */
+extern LZMA_API(const char *) lzma_version_string(void)
+		lzma_nothrow lzma_attr_const;
+
+#endif