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

1 files changed, 54 insertions, 0 deletions

diff --git a/m4/ax_cxx_template_qualified_base_class.m4 b/m4/ax_cxx_template_qualified_base_class.m4
new file mode 100644
index 0000000..c10e796
--- /dev/null
+++ b/m4/ax_cxx_template_qualified_base_class.m4
@@ -0,0 +1,54 @@
+# ==================================================================================
+#  http://www.nongnu.org/autoconf-archive/ax_cxx_template_qualified_base_class.html
+# ==================================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_TEMPLATE_QUALIFIED_BASE_CLASS
+#
+# DESCRIPTION
+#
+#   If the compiler supports template-qualified base class specifiers,
+#   define HAVE_TEMPLATE_QUALIFIED_BASE_CLASS.
+#
+# 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_TEMPLATE_QUALIFIED_BASE_CLASS],
+[AC_CACHE_CHECK(whether the compiler supports template-qualified base class specifiers,
+ac_cv_cxx_template_qualified_base_class,
+[AC_REQUIRE([AC_CXX_TYPENAME])
+ AC_REQUIRE([AC_CXX_FULL_SPECIALIZATION_SYNTAX])
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([
+#ifndef HAVE_TYPENAME
+ #define typename
+#endif
+class Base1 { public : int f () const { return 1; } };
+class Base2 { public : int f () const { return 0; } };
+template<class X> struct base_trait        { typedef Base1 base; };
+#ifdef HAVE_FULL_SPECIALIZATION_SYNTAX
+template<>        struct base_trait<float> { typedef Base2 base; };
+#else
+                  struct base_trait<float> { typedef Base2 base; };
+#endif
+template<class T> class Weird : public base_trait<T>::base
+{ public :
+  typedef typename base_trait<T>::base base;
+  int g () const { return base::f (); }
+};],[ Weird<float> z; return z.g ();],
+ ac_cv_cxx_template_qualified_base_class=yes, ac_cv_cxx_template_qualified_base_class=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_template_qualified_base_class" = yes; then
+  AC_DEFINE(HAVE_TEMPLATE_QUALIFIED_BASE_CLASS,,
+            [define if the compiler supports template-qualified base class specifiers])
+fi
+])