X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9273ffba9bc2a3e18d5a0ce4611e100593b4a5f0..87142ecc10075915bb570e7527ba1f9f005bb203:/acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 05197a1d7c..65ad9e93d8 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -8,77 +8,20 @@ dnl
 dnl Version: $Id$
 dnl ---------------------------------------------------------------------------
 
+
 dnl ===========================================================================
-dnl macros to detect specialty compiler options
+dnl Objective-C(++) related macros
 dnl ===========================================================================
-
-dnl Figure out if we need to pass -ext o to compiler (MetroWerks)
-AC_DEFUN([AC_WX_METROWERKS_EXTO],
-[AC_CACHE_CHECK([if the _AC_LANG compiler requires -ext o], wx_cv_[]_AC_LANG_ABBREV[]_exto,
-dnl First create an empty conf test
-[AC_LANG_CONFTEST([AC_LANG_PROGRAM()])
-dnl Now remove .o and .c.o or .cc.o
-rm -f conftest.$ac_objext conftest.$ac_ext.o
-dnl Now compile the test
-AS_IF([AC_TRY_EVAL(ac_compile)],
-dnl If the test succeeded look for conftest.c.o or conftest.cc.o
-[for ac_file in `(ls conftest.* 2>/dev/null)`; do
-    case $ac_file in
-        conftest.$ac_ext.o)
-            wx_cv_[]_AC_LANG_ABBREV[]_exto="-ext o"
-            ;;
-        *)
-            ;;
-    esac
-done],
-[AC_MSG_FAILURE([cannot figure out if compiler needs -ext o: cannot compile])
-]) dnl AS_IF
-
-rm -f conftest.$ac_ext.o conftest.$ac_objext conftest.$ac_ext
-]) dnl AC_CACHE_CHECK
-
-if test "x$wx_cv_[]_AC_LANG_ABBREV[]_exto" '!=' "x"; then
-    if test "[]_AC_LANG_ABBREV[]" = "c"; then
-        CFLAGS="$wx_cv_[]_AC_LANG_ABBREV[]_exto $CFLAGS"
-    fi
-    if test "[]_AC_LANG_ABBREV[]" = "cxx"; then
-        CXXFLAGS="$wx_cv_[]_AC_LANG_ABBREV[]_exto $CXXFLAGS"
-    fi
-fi
-]) dnl AC_DEFUN
-
-
-dnl Based on autoconf _AC_LANG_COMPILER_GNU
-AC_DEFUN([_AC_WX_LANG_COMPILER_XLC],
-[AC_CACHE_CHECK([whether we are using the IBM xlC _AC_LANG compiler],
-    [wx_cv_[]_AC_LANG_ABBREV[]_compiler_xlc],
-    [AC_TRY_COMPILE([],[#ifndef __xlC__
-       choke me
-#endif
-],
-        [wx_compiler_xlc=yes],
-        [wx_compiler_xlc=no])
-    wx_cv_[]_AC_LANG_ABBREV[]_compiler_xlc=$wx_compiler_xlc
-    ])
+m4_define([AC_WX_LANG_OBJECTIVEC],
+[AC_LANG(C)
+ac_ext=m
 ])
 
-dnl Loosely based on autoconf AC_PROG_CC
-AC_DEFUN([AC_WX_PROG_XLCC],
-[AC_LANG_PUSH(C)
-_AC_WX_LANG_COMPILER_XLC
-XLCC=`test $wx_compiler_xlc = yes && echo yes`
-AC_LANG_POP(C)
+m4_define([AC_WX_LANG_OBJECTIVECPLUSPLUS],
+[AC_LANG(C++)
+ac_ext=mm
 ])
 
-dnl Loosely based on autoconf AC_PROG_CXX
-AC_DEFUN([AC_WX_PROG_XLCXX],
-[AC_LANG_PUSH(C++)
-_AC_WX_LANG_COMPILER_XLC
-XLCXX=`test $wx_compiler_xlc = yes && echo yes`
-AC_LANG_POP(C++)
-])
-
-
 dnl ===========================================================================
 dnl macros to find the a file in the list of include/lib paths
 dnl ===========================================================================
@@ -705,3 +648,22 @@ if test "$ac_cv_cxx_static_cast" = yes; then
   AC_DEFINE(HAVE_STATIC_CAST,, [define if the compiler supports static_cast<>])
 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
+])
+