1 files changed, 131 insertions, 0 deletions
diff --git a/include/slibc/attributes.h b/include/slibc/attributes.h
new file mode 100644
index 0000000..3243ff6
--- /dev/null
+++ b/include/slibc/attributes.h
@@ -0,0 +1,131 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/* This file should be included from and only from <slibc/features.h>. */
+/* These definitions are only to be used in slibc header-files. */
+
+
+/* Clear old definitions. */
+#ifdef __noreturn
+# undef __noreturn
+#endif
+#ifdef __GCC_ONLY
+# undef __GCC_ONLY
+#endif
+#ifdef __SLIBC_ONLY
+# undef __SLIBC_ONLY
+#endif
+#ifdef __deprecated
+# undef __deprecated
+#endif
+#ifdef __warning
+# undef __warning
+#endif
+#ifdef __slibc_warning
+# undef __slibc_warning
+#endif
+#ifdef __bsd_posix_conflict
+# undef __bsd_posix_conflict
+#endif
+
+
+
+/**
+ * Specifies that a function never returns, that is,
+ * the process exits before the function returns.
+ */
+#if !defined(__C11__) && defined(__GNUC__)
+# define __noreturn  __attribute__((noreturn))
+#elif defined(__C11__)
+# define __noreturn  _Noreturn
+#else
+# define __noreturn  /* ignore */
+#endif
+
+
+/**
+ * Macro used to exclude code unless GCC is used.
+ */
+#if defined(__GNUC__)
+# define __GCC_ONLY(...)   __VA_ARGS__
+#else
+# define __GCC_ONLY(...)   /* ignore */
+#endif
+
+
+/**
+ * Macro used to exclude code unless `_SLIBC_SOURCE` is set.
+ */
+#if defined(_SLIBC_SOURCE)
+# define __SLIBC_ONLY(...)  __VA_ARGS__
+#else
+# define __SLIBC_ONLY(...)  /* ignore */
+#endif
+
+
+/**
+ * Mark a function, variable or type as deprecated,
+ * with a message that tells the user why the the
+ * function is deprecated, or functions to use instead.
+ */
+#if !defined(_SLIBC_SUPPRESS_WARNINGS)
+# define __deprecated(msg)  __GCC_ONLY(__attribute__((deprecated(msg))))
+#else
+# define __deprecated(msg)  /* ignore */
+#endif
+
+
+/**
+ * Warn if a function, variable or type is used.
+ */
+#if !defined(_SLIBC_SUPPRESS_WARNINGS)
+# define __warning(msg)        __GCC_ONLY(__attribute__((warning(msg))))
+# define __slibc_warning(msg)  __SLIBC_ONLY(__warning(msg))
+#else
+# define __warning(msg)        /* ignore */
+# define __slibc_warning(msg)  /* ignore */
+#endif
+
+
+/**
+ * Functions that have a BSD-specification that is conficting
+ * with the POSIX-specification shall have this attribute.
+ */
+#if defined(_BSD_SOURCE) && !defined(_POSIX_COMPATIBLE_SOURCE) && !defined(_BSD_COMPATIBLE_SOURCE)
+# define __bsd_posix_conflict  \
+  __warning("The BSD-version of this function is incompatible with the POSIX-version.")
+#else
+# define __bsd_posix_conflict  /* ignore*/
+#endif
+
+
+/**
+ * Format for the `format` GCC function attribute,
+ * for `*printf` functions.
+ */
+#ifndef slibc_printf
+# define slibc_printf  printf /* TODO write GCC extension */
+#endif
+
+/**
+ * Format for the `format` GCC function attribute,
+ * for `*scanf` functions.
+ */
+#ifndef slibc_scanf
+# define slibc_scanf  scanf /* TODO write GCC extension */
+#endif
+