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-rw-r--r--m4/restrict.m438
1 files changed, 0 insertions, 38 deletions
diff --git a/m4/restrict.m4 b/m4/restrict.m4
deleted file mode 100644
index 1f3bbb92c..000000000
--- 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
-])