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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | # =================================================================================
# http://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 6
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
])
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