Rename AC_ prefixes to AX_ (only in names of aa macros!).

1 files changed, 38 insertions, 0 deletions

diff --git a/m4/ax_cxx_old_for_scoping.m4 b/m4/ax_cxx_old_for_scoping.m4
new file mode 100644
index 0000000..0ce3c44
--- /dev/null
+++ b/m4/ax_cxx_old_for_scoping.m4
@@ -0,0 +1,38 @@
+# ===========================================================================
+#     http://www.nongnu.org/autoconf-archive/ax_cxx_old_for_scoping.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_OLD_FOR_SCOPING
+#
+# DESCRIPTION
+#
+#   If the compiler accepts the old for scoping rules (the scope of a
+#   variable declared inside the parentheses extends outside the for-body),
+#   define HAVE_OLD_FOR_SCOPING. Note that some compilers (notably g++ and
+#   egcs) support both new and old rules since they accept the old rules and
+#   only generate a warning.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Todd Veldhuizen
+#   Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.
+
+AC_DEFUN([AX_CXX_OLD_FOR_SCOPING],
+[AC_CACHE_CHECK(whether the compiler accepts the old for scoping rules,
+ac_cv_cxx_old_for_scoping,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE(,[int z;for (int i=0; i < 10; ++i)z=z+i;z=i;return z;],
+ ac_cv_cxx_old_for_scoping=yes, ac_cv_cxx_old_for_scoping=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_old_for_scoping" = yes; then
+  AC_DEFINE(HAVE_OLD_FOR_SCOPING,,[define if the compiler accepts the old for scoping rules])
+fi
+])