Removed unneeded semicolon after DECLARE_DYNAMIC_CLASS [ bug 1162938 ]

[wxWidgets.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index e1a2a8af6541a343a2c96183ac1ff950a19b14b5..e536a75bac95256d1b90820c8de10b375c9fccf1 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -91,6 +91,18 @@ XLCXX=`test $wx_compiler_xlc = yes && echo yes`
 AC_LANG_POP(C++)
 ])
 
+dnl ===========================================================================
+dnl Objective-C(++) related macros
+dnl ===========================================================================
+m4_define([AC_WX_LANG_OBJECTIVEC],
+[AC_LANG(C)
+ac_ext=m
+])
+
+m4_define([AC_WX_LANG_OBJECTIVECPLUSPLUS],
+[AC_LANG(C++)
+ac_ext=mm
+])
 
 dnl ===========================================================================
 dnl macros to find the a file in the list of include/lib paths
@@ -719,6 +731,25 @@ if test "$ac_cv_cxx_static_cast" = yes; then
 fi
 ])
 
+dnl http://autoconf-archive.cryp.to/ac_cxx_dynamic_cast.html
+AC_DEFUN([AC_CXX_DYNAMIC_CAST],
+[AC_CACHE_CHECK(whether the compiler supports dynamic_cast<>,
+ac_cv_cxx_dynamic_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([#include <typeinfo>
+class Base { public : Base () {} virtual void f () = 0;};
+class Derived : public Base { public : Derived () {} virtual void f () {} };],[
+Derived d; Base& b=d; return dynamic_cast<Derived*>(&b) ? 0 : 1;],
+ ac_cv_cxx_dynamic_cast=yes, ac_cv_cxx_dynamic_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_dynamic_cast" = yes; then
+  AC_DEFINE(HAVE_DYNAMIC_CAST,,[define if the compiler supports dynamic_cast<>])
+fi
+])
+
+
 dnl ---------------------------------------------------------------------------
 dnl Support macros for makefiles generated by BAKEFILE.
 dnl ---------------------------------------------------------------------------