ac_cxx_typename.m4

来自「A C++ class library for scientific compu」· M4 代码 · 共 18 行

dnl Available from the GNU Autoconf Macro Archive at:
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_typename.html
dnl
AC_DEFUN([AC_CXX_TYPENAME],
[AC_CACHE_CHECK(whether the compiler recognizes typename,
ac_cv_cxx_typename,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE([template<typename T>class X {public:X(){}};],
[X<float> z; return 0;],
 ac_cv_cxx_typename=yes, ac_cv_cxx_typename=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_typename" = yes; then
  AC_DEFINE(HAVE_TYPENAME,,[define if the compiler recognizes typename])
fi
])