Macro: ac_cxx_default_template_parameters

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# ac_cxx_default_template_parameters

## Synopsis

`AC_CXX_DEFAULT_TEMPLATE_PARAMETERS`

## Version

1.1.1.1 (2001/07/26) C++_Support @ ac-archive-0.5.32

## Author

Luc Maisonobe

## Description

If the compiler supports default template parameters, define HAVE_DEFAULT_TEMPLATE_PARAMETERS.

## M4 Source Code

    AC_DEFUN([AC_CXX_DEFAULT_TEMPLATE_PARAMETERS],
    [AC_CACHE_CHECK(whether the compiler supports default template parameters,
    ac_cv_cxx_default_template_parameters,
    [AC_LANG_SAVE
     AC_LANG_CPLUSPLUS
     AC_TRY_COMPILE([
    template<class T = double, int N = 10> class A {public: int f() {return 0;}};
    ],[A<float> a; return a.f();],
     ac_cv_cxx_default_template_parameters=yes, ac_cv_cxx_default_template_parameters=no)
     AC_LANG_RESTORE
    ])
    if test "$ac_cv_cxx_default_template_parameters" = yes; then
      AC_DEFINE(HAVE_DEFAULT_TEMPLATE_PARAMETERS,,
                [define if the compiler supports default template parameters])
    fi
    ])