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AC_CXX_MUTABLE
1.2 (2004/02/15) 0.5.63 : C++_Support
Todd Veldhuizen and Luc Maisonobe <luc@spaceroots.org>
AC_DEFUN([AC_CXX_MUTABLE], [AC_CACHE_CHECK(whether the compiler supports the mutable keyword, ac_cv_cxx_mutable, [AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([ class A { mutable int i; public: int f (int n) const { i = n; return i; } }; ],[A a; return a.f (1);], ac_cv_cxx_mutable=yes, ac_cv_cxx_mutable=no) AC_LANG_RESTORE ]) if test "$ac_cv_cxx_mutable" = yes; then AC_DEFINE(HAVE_MUTABLE,,[define if the compiler supports the mutable keyword]) fi ])