Sync with gnulib - lots of extraneous code removed in preference to GNU code

[nagiosplug.git] / m4 / restrict.m4

diff --git a/m4/restrict.m4 b/m4/restrict.m4
deleted file mode 100644 (file)
index 1f3bbb9..0000000
--- a/m4/restrict.m4
+++ /dev/null
@@ -1,38 +0,0 @@
-#serial 1003
-dnl Copyright (C) 2003 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-# This macro can be removed once we can rely on Autoconf 2.57a or later,
-# since we can then use its AC_C_RESTRICT.
-
-# gl_C_RESTRICT
-# --------------
-# Determine whether the C/C++ compiler supports the "restrict" keyword
-# introduced in ANSI C99, or an equivalent.  Do nothing if the compiler
-# accepts it.  Otherwise, if the compiler supports an equivalent,
-# define "restrict" to be that.  Here are some variants:
-# - GCC supports both __restrict and __restrict__
-# - older DEC Alpha C compilers support only __restrict
-# - _Restrict is the only spelling accepted by Sun WorkShop 6 update 2 C
-# Otherwise, define "restrict" to be empty.
-AC_DEFUN([gl_C_RESTRICT],
-[AC_CACHE_CHECK([for C/C++ restrict keyword], gl_cv_c_restrict,
-  [gl_cv_c_restrict=no
-   # Try the official restrict keyword, then gcc's __restrict, and
-   # the less common variants.
-   for ac_kw in restrict __restrict __restrict__ _Restrict; do
-     AC_COMPILE_IFELSE([AC_LANG_SOURCE(
-      [float * $ac_kw x;])],
-      [gl_cv_c_restrict=$ac_kw; break])
-   done
-  ])
- case $gl_cv_c_restrict in
-   restrict) ;;
-   no) AC_DEFINE(restrict,,
-       [Define to equivalent of C99 restrict keyword, or to nothing if this
-       is not supported.  Do not define if restrict is supported directly.]) ;;
-   *)  AC_DEFINE_UNQUOTED(restrict, $gl_cv_c_restrict) ;;
- esac
-])