dnl Version: $Id$
dnl ---------------------------------------------------------------------------
+
+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
dnl ===========================================================================
AC_DEFUN([WX_PATH_FIND_INCLUDES],
[
ac_find_includes=
-for ac_dir in $1;
+for ac_dir in $1 /usr/include;
do
if test -f "$ac_dir/$2"; then
ac_find_includes=$ac_dir
])
dnl ---------------------------------------------------------------------------
-dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_libraries
+dnl call WX_PATH_FIND_LIBRARIES(search path, lib name), sets ac_find_libraries
dnl to the full name of the file that was found or leaves it empty if not found
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_PATH_FIND_LIBRARIES],
[
-ac_find_libraries=
-for ac_dir in $1;
+ ac_find_libraries=
+ for ac_dir in $1;
do
- for ac_extension in a so sl dylib; do
+ for ac_extension in a so sl dylib dll.a; do
if test -f "$ac_dir/lib$2.$ac_extension"; then
ac_find_libraries=$ac_dir
break 2
done
])
+dnl ---------------------------------------------------------------------------
+dnl return list of standard library paths
+dnl ---------------------------------------------------------------------------
+dnl return all default locations:
+dnl - /usr/lib: standard
+dnl - /usr/lib32: n32 ABI on IRIX
+dnl - /usr/lib64: n64 ABI on IRIX
+dnl - /usr/lib/64: 64 bit ABI on Solaris and Linux x86-64
+dnl
+dnl NB: if any of directories in the list is not a subdir of /usr, code setting
+dnl wx_cv_std_libpath needs to be updated
+AC_DEFUN([WX_STD_LIBPATH], [/usr/lib /usr/lib32 /usr/lib/64 /usr/lib64])
+
dnl ---------------------------------------------------------------------------
dnl Path to include, already defined
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_INCLUDE_PATH_EXIST],
[
- ac_path_to_include=$1
- echo "$2" | grep "\-I$1" > /dev/null
- result=$?
- if test $result = 0; then
+ dnl never add -I/usr/include to the CPPFLAGS
+ if test "x$1" = "x/usr/include"; then
ac_path_to_include=""
else
- ac_path_to_include=" -I$1"
+ echo "$2" | grep "\-I$1" > /dev/null
+ result=$?
+ if test $result = 0; then
+ ac_path_to_include=""
+ else
+ ac_path_to_include=" -I$1"
+ fi
fi
])
dnl ---------------------------------------------------------------------------
-dnl Path to link, already defined
+dnl Usage: WX_LINK_PATH_EXIST(path, libpath)
+dnl
+dnl Set ac_path_to_link to nothing if path is already in libpath of to -Lpath
+dnl if it is not, so that libpath can be set to "$libpath$ac_path_to_link"
+dnl after calling this function
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_LINK_PATH_EXIST],
[
- echo "$2" | grep "\-L$1" > /dev/null
- result=$?
- if test $result = 0; then
+ dnl never add -L/usr/libXXX explicitely to libpath
+ if test "$1" = "default location"; then
ac_path_to_link=""
else
- ac_path_to_link=" -L$1"
+ echo "$2" | grep "\-L$1" > /dev/null
+ result=$?
+ if test $result = 0; then
+ ac_path_to_link=""
+ else
+ ac_path_to_link=" -L$1"
+ fi
fi
])
dnl or only the old <iostream.h> one - it may be generally assumed that if
dnl <iostream> exists, the other "new" headers (without .h) exist too.
dnl
-dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false-or-cross-compiling)
+dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false)
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_CPP_NEW_HEADERS],
[
- if test "$cross_compiling" = "yes"; then
- ifelse([$2], , :, [$2])
- else
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
- AC_CHECK_HEADERS(iostream)
+ AC_CHECK_HEADERS([iostream],,, [ ])
if test "$ac_cv_header_iostream" = "yes" ; then
ifelse([$1], , :, [$1])
fi
AC_LANG_RESTORE
- fi
])
dnl ---------------------------------------------------------------------------
fi
])
+dnl ---------------------------------------------------------------------------
+dnl WX_CHECK_FUNCS(FUNCTIONS...,
+dnl [ACTION-IF-FOUND],
+dnl [ACTION-IF-NOT-FOUND],
+dnl [EXTRA-DEFINES-AND-INCLUDES],
+dnl [EXTRA-TEST-CODE])
+dnl
+dnl Checks that the functions listed in FUNCTIONS exist in the headers and the
+dnl libs. For each function, if it is found then defines 'HAVE_FUNCTION' and
+dnl executes ACTION-IF-FOUND, otherwise executes ACTION-IF-NOT-FOUND.
+dnl
+dnl The code from EXTRA-DEFINES-AND-INCLUDES is inserted into the test before
+dnl the default headers are included, and EXTRA-TEST-CODE is inserted into
+dnl the main() function after the default test for existence.
+dnl
+dnl Examples:
+dnl # the simple case
+dnl WX_CHECK_FUNCS(stat)
+dnl # use break to finish the loop early
+dnl WX_CHECK_FUNCS(mkstemp mktemp, break)
+dnl # extra defines
+dnl WX_CHECK_FUNCS(strtok_r, [], [], [#define _RREENTRANT])
+dnl # extra includes
+dnl WX_CHECK_FUNCS(swprintf, [], [], [#include <wchar.h>])
+dnl # checking the signature with extra test code
+dnl WX_CHECK_FUNCS(gettimeofday, [], [], [#include <sys/time.h>]
+dnl [struct timeval tv; struct timezone tz; gettimeofday(&tv, &tz)])
+dnl ---------------------------------------------------------------------------
+
+AC_DEFUN([WX_CHECK_FUNCS],
+[
+ for wx_func in $1
+ do
+ AC_CACHE_CHECK(
+ [for $wx_func],
+ [wx_cv_func_$wx_func],
+ [
+ AC_LINK_IFELSE(
+ [
+ AC_LANG_PROGRAM(
+ [
+ $4
+ AC_INCLUDES_DEFAULT
+ ],
+ [
+ #ifndef $wx_func
+ &$wx_func;
+ #endif
+ $5
+ ])
+ ],
+ [eval wx_cv_func_$wx_func=yes],
+ [eval wx_cv_func_$wx_func=no])
+ ])
+
+ if eval test \$wx_cv_func_$wx_func = yes
+ then
+ AC_DEFINE_UNQUOTED([HAVE_`echo $wx_func | tr 'a-z' 'A-Z'`])
+ $2
+ else
+ :
+ $3
+ fi
+ done
+])
+
dnl ---------------------------------------------------------------------------
dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
dnl ---------------------------------------------------------------------------
mv ${wx_arg_cache_file}.tmp ${wx_arg_cache_file}
])
+dnl return the name of the variable to store the value of the given
+dnl WX_ARG_WITH/ENABLE option
+AC_DEFUN([WX_ARG_CACHE_NAME],)
+
dnl this macro checks for a three-valued command line --with argument:
dnl possible arguments are 'yes', 'no', 'sys', or 'builtin'
dnl usage: WX_ARG_SYS_WITH(option, helpmessage, variable-name)
+dnl
+dnl the default value (used if the option is not specified at all) is the value
+dnl of wxUSE_ALL_FEATURES (which is "yes" by default but can be changed by
+dnl giving configure --disable-all-features option)
AC_DEFUN([WX_ARG_SYS_WITH],
[
AC_MSG_CHECKING([for --with-$1])
- no_cache=0
AC_ARG_WITH($1, [$2],
[
if test "$withval" = yes; then
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
elif test "$withval" = no; then
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
elif test "$withval" = sys; then
- ac_cv_use_$1='$3=sys'
+ AS_TR_SH(wx_cv_use_$1)='$3=sys'
elif test "$withval" = builtin; then
- ac_cv_use_$1='$3=builtin'
+ AS_TR_SH(wx_cv_use_$1)='$3=builtin'
else
AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
fi
+ cache=yes
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
+ LINE=`grep "^$3=" ${wx_arg_cache_file}`
if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
+ eval "DEFAULT_$LINE"
+ cache=yes
else
- no_cache=1
+ cache=no
fi
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$wxUSE_ALL_FEATURES}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
+ eval "$AS_TR_SH(wx_cv_use_$1)"
+ if test "x$cache" = xyes; then
+ echo "$3=$$3" >> ${wx_arg_cache_file}.tmp
fi
if test "$$3" = yes; then
])
dnl this macro checks for a command line argument and caches the result
-dnl usage: WX_ARG_WITH(option, helpmessage, variable-name)
+dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring])
AC_DEFUN([WX_ARG_WITH],
[
- AC_MSG_CHECKING([for --with-$1])
- no_cache=0
+ withstring=$4
+ defaultval=$wxUSE_ALL_FEATURES
+ if test -z "$defaultval"; then
+ if test x"$withstring" = xwithout; then
+ defaultval=yes
+ else
+ defaultval=no
+ fi
+ fi
+ AC_MSG_CHECKING([for --${withstring:-with}-$1])
AC_ARG_WITH($1, [$2],
[
if test "$withval" = yes; then
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
else
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
fi
+ cache=yes
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
+ LINE=`grep "^$3=" ${wx_arg_cache_file}`
if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
+ eval "DEFAULT_$LINE"
+ cache=yes
else
- no_cache=1
+ cache=no
fi
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
+ eval "$AS_TR_SH(wx_cv_use_$1)"
+ if test "x$cache" = xyes; then
+ echo "$3=$$3" >> ${wx_arg_cache_file}.tmp
fi
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
+ if test x"$withstring" = xwithout; then
+ if test $$3 = yes; then
+ result=no
+ else
+ result=yes
+ fi
else
- AC_MSG_RESULT(no)
+ result=$$3
fi
+
+ AC_MSG_RESULT($result)
])
+dnl same as WX_ARG_WITH but makes it clear that the option is enabled by default
+AC_DEFUN([WX_ARG_WITHOUT], [WX_ARG_WITH($1, [$2], $3, without)])
+
dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH
-dnl usage: WX_ARG_ENABLE(option, helpmessage, variable-name, enablestring)
+dnl usage: WX_ARG_ENABLE(option, helpmessage, var, [enablestring], [default])
+dnl
+dnl enablestring can be omitted or a literal string "disable" and allows to
+dnl show "checking for --disable-foo" message when running configure instead of
+dnl the default "checking for --enable-foo" one whih is useful for the options
+dnl enabled by default
dnl
-dnl enablestring is a hack and allows to show "checking for --disable-foo"
-dnl message when running configure instead of the default "checking for
-dnl --enable-foo" one whih is useful for the options enabled by default
+dnl the "default" argument can be omitted or contain the default value to use
+dnl for the option if it's unspecified
AC_DEFUN([WX_ARG_ENABLE],
[
- enablestring=$4
+ enablestring=$4
+ defaultval=$5
+ if test -z "$defaultval"; then
+ if test x"$enablestring" = xdisable; then
+ defaultval=yes
+ else
+ defaultval=no
+ fi
+ fi
+
AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
- no_cache=0
AC_ARG_ENABLE($1, [$2],
[
if test "$enableval" = yes; then
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
else
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
fi
+ cache=yes
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
+ LINE=`grep "^$3=" ${wx_arg_cache_file}`
if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
+ eval "DEFAULT_$LINE"
+ cache=yes
else
- no_cache=1
+ cache=no
fi
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
+ eval "$AS_TR_SH(wx_cv_use_$1)"
+ if test "x$cache" = xyes; then
+ echo "$3=$$3" >> ${wx_arg_cache_file}.tmp
fi
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
+ if test x"$enablestring" = xdisable; then
+ if test $$3 = yes; then
+ result=no
+ else
+ result=yes
+ fi
else
- AC_MSG_RESULT(no)
+ result=$$3
+ fi
+
+ AC_MSG_RESULT($result)
+ ])
+
+dnl the same as WX_ARG_ENABLE but makes it more clear that the option is
+dnl enabled by default
+AC_DEFUN([WX_ARG_DISABLE], [WX_ARG_ENABLE($1, [$2], $3, disable)])
+
+dnl same as WX_ARG_ENABLE but defaults to wxUSE_ALL_FEATURES instead of "yes"
+AC_DEFUN([WX_ARG_FEATURE], [WX_ARG_ENABLE($1, [$2], $3,, $wxUSE_ALL_FEATURES)])
+
+dnl Like WX_ARG_ENABLE but accepts a parameter.
+dnl
+dnl Usage:
+dnl WX_ARG_ENABLE_PARAM(option, helpmessage, variable-name, enablestring)
+dnl
+dnl Example:
+dnl WX_ARG_ENABLE_PARAM(foo, [[ --enable-foo[=bar] use foo]], wxUSE_FOO)
+dnl
+dnl --enable-foo wxUSE_FOO=yes
+dnl --disable-foo wxUSE_FOO=no
+dnl --enable-foo=bar wxUSE_FOO=bar
+dnl <not given> value from configarg.cache or
+dnl wxUSE_FOO=$DEFAULT_wxUSE_FOO
+dnl
+AC_DEFUN([WX_ARG_ENABLE_PARAM],
+ [
+ enablestring=$4
+ AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
+ AC_ARG_ENABLE($1, [$2],
+ [
+ wx_cv_use_$1="$3='$enableval'"
+ cache=yes
+ ],
+ [
+ LINE=`grep "^$3=" ${wx_arg_cache_file}`
+ if test "x$LINE" != x ; then
+ eval "DEFAULT_$LINE"
+ cache=yes
+ else
+ cache=no
+ fi
+
+ wx_cv_use_$1='$3='$DEFAULT_$3
+ ])
+
+ eval "$wx_cv_use_$1"
+ if test "x$cache" = xyes; then
+ echo "$3=$$3" >> ${wx_arg_cache_file}.tmp
fi
+
+ AC_MSG_RESULT([$$3])
])
+dnl ===========================================================================
+dnl Linker features test
+dnl ===========================================================================
+
+dnl ---------------------------------------------------------------------------
+dnl WX_VERSIONED_SYMBOLS checks whether the linker can create versioned
+dnl symbols. If it can, sets LDFLAGS_VERSIONING to $CXX flags needed to use
+dnl version script file named versionfile
+dnl
+dnl call WX_VERSIONED_SYMBOLS(versionfile)
+dnl ---------------------------------------------------------------------------
+AC_DEFUN([WX_VERSIONED_SYMBOLS],
+[
+ case "${host}" in
+ *-*-cygwin* | *-*-mingw* )
+ dnl although ld does support version script option on these
+ dnl platforms, it doesn't make much sense to use it under Win32
+ dnl and, moreover, this breaks linking because of a bug in handling
+ dnl paths in -Wl,--version-script,path option (if we ever do need
+ dnl to use it for cygwin/mingw32, keep in mind that replacing last
+ dnl comma with the equal sign works) so
+ dnl simply disable it
+ wx_cv_version_script=no
+ ;;
+
+ *)
+ AC_CACHE_CHECK([if the linker accepts --version-script], wx_cv_version_script,
+ [
+ echo "VER_1 { *; };" >conftest.sym
+ echo "int main() { return 0; }" >conftest.cpp
+
+ if AC_TRY_COMMAND([
+ $CXX -o conftest.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
+ -Wl,--version-script,conftest.sym >/dev/null 2>conftest.stderr]) ; then
+ if test -s conftest.stderr ; then
+ wx_cv_version_script=no
+ else
+ wx_cv_version_script=yes
+ fi
+ else
+ wx_cv_version_script=no
+ fi
+
+ dnl There's a problem in some old linkers with --version-script that
+ dnl can cause linking to fail when you have objects with vtables in
+ dnl libs 3 deep. This is known to happen in netbsd and openbsd with
+ dnl ld 2.11.2.
+ dnl
+ dnl To test for this we need to make some shared libs and
+ dnl unfortunately we can't be sure of the right way to do that. If the
+ dnl first two compiles don't succeed then it looks like the test isn't
+ dnl working and the result is ignored, but if OTOH the first two
+ dnl succeed but the third does not then the bug has been detected and
+ dnl the --version-script flag is dropped.
+ if test $wx_cv_version_script = yes
+ then
+ echo "struct B { virtual ~B() { } }; \
+ struct D : public B { }; \
+ void F() { D d; }" > conftest.cpp
+
+ if AC_TRY_COMMAND([
+ $CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
+ -Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) &&
+ AC_TRY_COMMAND([
+ $CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
+ -Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null])
+ then
+ if AC_TRY_COMMAND([
+ $CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
+ -Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null])
+ then
+ wx_cv_version_script=yes
+ else
+ wx_cv_version_script=no
+ fi
+ fi
+ fi
+
+ rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
+ rm -f conftest1.output conftest2.output conftest3.output
+ ])
+
+ if test $wx_cv_version_script = yes ; then
+ LDFLAGS_VERSIONING="-Wl,--version-script,$1"
+ fi
+ ;;
+ esac
+])
dnl ===========================================================================
AC_MSG_RESULT($wx_largefile)
fi
])
+
+
+dnl Available from the GNU Autoconf Macro Archive at:
+dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_const_cast.html
+dnl
+AC_DEFUN([AC_CXX_CONST_CAST],
+[AC_CACHE_CHECK(whether the compiler supports const_cast<>,
+ac_cv_cxx_const_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;],
+ ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_const_cast" = yes; then
+ AC_DEFINE(HAVE_CONST_CAST,,[define if the compiler supports const_cast<>])
+fi
+])
+
+dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_reinterpret_cast.html
+AC_DEFUN([AC_CXX_REINTERPRET_CAST],
+[AC_CACHE_CHECK(whether the compiler supports reinterpret_cast<>,
+ac_cv_cxx_reinterpret_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([#include <typeinfo>
+class Base { public : Base () {} virtual void f () = 0;};
+class Derived : public Base { public : Derived () {} virtual void f () {} };
+class Unrelated { public : Unrelated () {} };
+int g (Unrelated&) { return 0; }],[
+Derived d;Base& b=d;Unrelated& e=reinterpret_cast<Unrelated&>(b);return g(e);],
+ ac_cv_cxx_reinterpret_cast=yes, ac_cv_cxx_reinterpret_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_reinterpret_cast" = yes; then
+ AC_DEFINE(HAVE_REINTERPRET_CAST,,
+ [define if the compiler supports reinterpret_cast<>])
+fi
+])
+
+dnl and http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_static_cast.html
+AC_DEFUN([AC_CXX_STATIC_CAST],
+[AC_CACHE_CHECK(whether the compiler supports static_cast<>,
+ac_cv_cxx_static_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 () {} };
+int g (Derived&) { return 0; }],[
+Derived d; Base& b = d; Derived& s = static_cast<Derived&> (b); return g (s);],
+ ac_cv_cxx_static_cast=yes, ac_cv_cxx_static_cast=no)
+ AC_LANG_RESTORE
+])
+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
+])
+
projects / wxWidgets.git / blobdiff