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# ====================================================================================== # https://www.gnu.org/software/autoconf-archive/ax_cxx_full_specialization_syntax.html # ====================================================================================== # # SYNOPSIS # # AX_CXX_FULL_SPECIALIZATION_SYNTAX # # DESCRIPTION # # If the compiler recognizes the full specialization syntax, define # HAVE_FULL_SPECIALIZATION_SYNTAX. # # 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_FULL_SPECIALIZATION_SYNTAX], [AX_CXX_FULL_SPECIALIZATION_SYNTAX]) AC_DEFUN([AX_CXX_FULL_SPECIALIZATION_SYNTAX], [AC_CACHE_CHECK(whether the compiler recognizes the full specialization syntax, ax_cv_cxx_full_specialization_syntax, [AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([ template<class T> class A { public : int f () const { return 1; } }; template<> class A<float> { public: int f () const { return 0; } };],[ A<float> a; return a.f();], ax_cv_cxx_full_specialization_syntax=yes, ax_cv_cxx_full_specialization_syntax=no) AC_LANG_RESTORE ]) if test "$ax_cv_cxx_full_specialization_syntax" = yes; then AC_DEFINE(HAVE_FULL_SPECIALIZATION_SYNTAX,, [define if the compiler recognizes the full specialization syntax]) fi ])
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