20 lines
765 B
Plaintext
20 lines
765 B
Plaintext
dnl Available from the GNU Autoconf Macro Archive at:
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dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_default_template_parameters.html
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dnl
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AC_DEFUN([AC_CXX_DEFAULT_TEMPLATE_PARAMETERS],
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[AC_CACHE_CHECK(whether the compiler supports default template parameters,
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ac_cv_cxx_default_template_parameters,
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[AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([
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template<class T = double, int N = 10> class A {public: int f() {return 0;}};
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],[A<float> a; return a.f();],
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ac_cv_cxx_default_template_parameters=yes, ac_cv_cxx_default_template_parameters=no)
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AC_LANG_RESTORE
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])
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if test "$ac_cv_cxx_default_template_parameters" = yes; then
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AC_DEFINE(HAVE_DEFAULT_TEMPLATE_PARAMETERS,,
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[define if the compiler supports default template parameters])
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fi
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])
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