1 files changed, 39 insertions, 0 deletions
diff --git a/include/osmocom/core/defs.h b/include/osmocom/core/defs.h
new file mode 100644
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+++ b/include/osmocom/core/defs.h
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+#ifndef OSMOCORE_DEFS_H
+#define OSMOCORE_DEFS_H
+
+/*! \defgroup utils General-purpose utility functions
+ *  @{
+ */
+
+/*! \file defs.h
+ *  \brief General definitions that are meant to be included from header files.
+ */
+
+/*! \brief Check for gcc and version.
+ *
+ * \note Albeit glibc provides a features.h file that contains a similar
+ *       definition (__GNUC_PREREQ), this definition has been copied from there
+ *       to have it available with other libraries, too.
+ *
+ * \return != 0 iff gcc is used and it's version is at least maj.min.
+ */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define OSMO_GNUC_PREREQ(maj, min) \
+	((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define OSMO_GNUC_PREREQ(maj, min) 0
+#endif
+
+/*! \brief Set the deprecated attribute with a message.
+ */
+#if ! defined(__GNUC__)
+# define OSMO_DEPRECATED(text)
+#elif OSMO_GNUC_PREREQ(4,5)
+# define OSMO_DEPRECATED(text)  __attribute__((__deprecated__(text)))
+#else
+# define OSMO_DEPRECATED(text)  __attribute__((__deprecated__))
+#endif
+
+/*! @} */
+
+#endif