20 lines
765 B
Plaintext
20 lines
765 B
Plaintext
|
dnl Available from the GNU Autoconf Macro Archive at:
|
||
|
|
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_default_template_parameters.html
|
||
|
|
dnl
|
||
|
|
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
|
||
|
|
])
|