文件操作 - ax_cxx_template_scoped_argument_matching.m4
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文件: /usr/share/aclocal/ax_cxx_template_scoped_argument_matching.m4
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# ============================================================================================= # https://www.gnu.org/software/autoconf-archive/ax_cxx_template_scoped_argument_matching.html # ============================================================================================= # # SYNOPSIS # # AX_CXX_TEMPLATE_SCOPED_ARGUMENT_MATCHING # # DESCRIPTION # # If the compiler supports function matching with argument types which are # template scope-qualified, define HAVE_TEMPLATE_SCOPED_ARGUMENT_MATCHING. # # 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_TEMPLATE_SCOPED_ARGUMENT_MATCHING], [AX_CXX_TEMPLATE_SCOPED_ARGUMENT_MATCHING]) AC_DEFUN([AX_CXX_TEMPLATE_SCOPED_ARGUMENT_MATCHING], [AC_CACHE_CHECK(whether the compiler supports function matching with argument types which are template scope-qualified, ax_cv_cxx_template_scoped_argument_matching, [AC_REQUIRE([AX_CXX_TYPENAME]) AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([ #ifndef HAVE_TYPENAME #define typename #endif template<class X> class A { public : typedef X W; }; template<class Y> class B {}; template<class Y> void operator+(B<Y> d1, typename Y::W d2) {} ],[B<A<float> > z; z + 0.5f; return 0;], ax_cv_cxx_template_scoped_argument_matching=yes, ax_cv_cxx_template_scoped_argument_matching=no) AC_LANG_RESTORE ]) if test "$ax_cv_cxx_template_scoped_argument_matching" = yes; then AC_DEFINE(HAVE_TEMPLATE_SCOPED_ARGUMENT_MATCHING,, [define if the compiler supports function matching with argument types which are template scope-qualified]) fi ])
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