|
- # ==================================================================================
- # https://www.gnu.org/software/autoconf-archive/ax_cxx_partial_specialization.html
- # ==================================================================================
- #
- # SYNOPSIS
- #
- # AX_CXX_PARTIAL_SPECIALIZATION
- #
- # DESCRIPTION
- #
- # If the compiler supports partial specialization, define
- # HAVE_PARTIAL_SPECIALIZATION.
- #
- # 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. This file is offered as-is, without any
- # warranty.
-
- #serial 7
-
- AU_ALIAS([AC_CXX_PARTIAL_SPECIALIZATION], [AX_CXX_PARTIAL_SPECIALIZATION])
- AC_DEFUN([AX_CXX_PARTIAL_SPECIALIZATION],
- [AC_CACHE_CHECK(whether the compiler supports partial specialization,
- ax_cv_cxx_partial_specialization,
- [AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([
- template<class T, int N> class A { public : enum e { z = 0 }; };
- template<int N> class A<double, N> { public : enum e { z = 1 }; };
- template<class T> class A<T, 2> { public : enum e { z = 2 }; };
- ],[return (A<int,3>::z == 0) && (A<double,3>::z == 1) && (A<float,2>::z == 2);],
- ax_cv_cxx_partial_specialization=yes, ax_cv_cxx_partial_specialization=no)
- AC_LANG_RESTORE
- ])
- if test "$ax_cv_cxx_partial_specialization" = yes; then
- AC_DEFINE(HAVE_PARTIAL_SPECIALIZATION,,
- [define if the compiler supports partial specialization])
- fi
- ])
|
