dnl Version: $Id$
dnl ---------------------------------------------------------------------------
+
dnl ===========================================================================
-dnl macros to detect specialty compiler options
+dnl Objective-C(++) related macros
dnl ===========================================================================
+m4_define([AC_WX_LANG_OBJECTIVEC],
+[AC_LANG(C)
+ac_ext=m
+])
-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
-
+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 ---------------------------------------------------------------------------
-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 /usr/lib;
+ 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=$ac_dir
break 2
done
])
+dnl ---------------------------------------------------------------------------
+dnl return list of standard library paths
+dnl ---------------------------------------------------------------------------
+dnl return all default locations:
+dnl - /usr/lib: standard
+dnl - /usr/lib32: n32 ABI on IRIX
+dnl - /usr/lib64: n64 ABI on IRIX
+dnl - /usr/lib/64: 64 bit ABI on Solaris and Linux x86-64
+dnl
+dnl NB: if any of directories in the list is not a subdir of /usr, code setting
+dnl wx_cv_std_libpath needs to be updated
+AC_DEFUN([WX_STD_LIBPATH], [/usr/lib /usr/lib32 /usr/lib/64 /usr/lib64])
+
dnl ---------------------------------------------------------------------------
dnl Path to include, already defined
dnl ---------------------------------------------------------------------------
])
dnl ---------------------------------------------------------------------------
-dnl Path to link, already defined
+dnl Usage: WX_LINK_PATH_EXIST(path, libpath)
+dnl
+dnl Set ac_path_to_link to nothing if path is already in libpath of to -Lpath
+dnl if it is not, so that libpath can be set to "$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$1"
+ fi
fi
])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
- AC_CHECK_HEADERS(iostream)
+ AC_CHECK_HEADERS([iostream],,, [ ])
if test "$ac_cv_header_iostream" = "yes" ; then
ifelse([$1], , :, [$1])
AC_LANG_RESTORE
])
-dnl ---------------------------------------------------------------------------
-dnl WX_CPP_BOOL checks whether the C++ compiler has a built in bool type
-dnl
-dnl call WX_CPP_BOOL - will define HAVE_BOOL if the compiler supports bool
-dnl ---------------------------------------------------------------------------
-
-AC_DEFUN([WX_CPP_BOOL],
-[
- AC_CACHE_CHECK([if C++ compiler supports bool], wx_cv_cpp_bool,
- [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- AC_TRY_COMPILE(
- [
- ],
- [
- bool b = true;
-
- return 0;
- ],
- [
- wx_cv_cpp_bool=yes
- ],
- [
- wx_cv_cpp_bool=no
- ]
- )
-
- AC_LANG_RESTORE
- ])
-
- if test "$wx_cv_cpp_bool" = "yes"; then
- AC_DEFINE(HAVE_BOOL)
- fi
-])
-
dnl ---------------------------------------------------------------------------
dnl WX_CPP_EXPLICIT checks whether the C++ compiler support the explicit
dnl keyword and defines HAVE_EXPLICIT if this is the case
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([AS_TR_CPP([HAVE_$wx_func])])
+ $2
+ else
+ :
+ $3
+ fi
+ done
+])
+
dnl ---------------------------------------------------------------------------
dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
dnl ---------------------------------------------------------------------------
])
dnl ---------------------------------------------------------------------------
-dnl override AC_ARG_ENABLE/WITH to cache the results in .cache file
+dnl override AC_ARG_ENABLE/WITH to handle options defaults
dnl ---------------------------------------------------------------------------
-AC_DEFUN([WX_ARG_CACHE_INIT],
- [
- wx_arg_cache_file="configarg.cache"
- echo "loading argument cache $wx_arg_cache_file"
- rm -f ${wx_arg_cache_file}.tmp
- touch ${wx_arg_cache_file}.tmp
- touch ${wx_arg_cache_file}
- ])
-
-AC_DEFUN([WX_ARG_CACHE_FLUSH],
- [
- echo "saving argument cache $wx_arg_cache_file"
- mv ${wx_arg_cache_file}.tmp ${wx_arg_cache_file}
- ])
-
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
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- 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 >> ${wx_arg_cache_file}.tmp
- fi
+ eval "$AS_TR_SH(wx_cv_use_$1)"
if test "$$3" = yes; then
AC_MSG_RESULT(yes)
fi
])
-dnl this macro checks for a command line argument and caches the result
-dnl usage: WX_ARG_WITH(option, helpmessage, variable-name)
+dnl this macro simply checks for a command line argument
+dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring])
AC_DEFUN([WX_ARG_WITH],
[
- AC_MSG_CHECKING([for --with-$1])
- no_cache=0
+ withstring=$4
+ defaultval=$wxUSE_ALL_FEATURES
+ if test -z "$defaultval"; then
+ if test x"$withstring" = xwithout; then
+ defaultval=yes
+ else
+ defaultval=no
+ fi
+ fi
+ AC_MSG_CHECKING([for --${withstring:-with}-$1])
AC_ARG_WITH($1, [$2],
[
if test "$withval" = yes; then
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
else
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
fi
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- fi
-
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
+ eval "$AS_TR_SH(wx_cv_use_$1)"
- if test "$$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
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- 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 >> ${wx_arg_cache_file}.tmp
- fi
+ eval "$AS_TR_SH(wx_cv_use_$1)"
- 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=$$3
fi
+
+ AC_MSG_RESULT($result)
])
+dnl the same as WX_ARG_ENABLE but makes it more clear that the option is
+dnl enabled by default
+AC_DEFUN([WX_ARG_DISABLE], [WX_ARG_ENABLE($1, [$2], $3, disable)])
+
+dnl same as WX_ARG_ENABLE but defaults to wxUSE_ALL_FEATURES instead of "yes"
+AC_DEFUN([WX_ARG_FEATURE], [WX_ARG_ENABLE($1, [$2], $3,, $wxUSE_ALL_FEATURES)])
+
+dnl Like WX_ARG_ENABLE but accepts a parameter.
+dnl
+dnl Usage:
+dnl WX_ARG_ENABLE_PARAM(option, helpmessage, variable-name, enablestring)
+dnl
+dnl Example:
+dnl WX_ARG_ENABLE_PARAM(foo, [[ --enable-foo[=bar] use foo]], wxUSE_FOO)
+dnl
+dnl --enable-foo wxUSE_FOO=yes
+dnl --disable-foo wxUSE_FOO=no
+dnl --enable-foo=bar wxUSE_FOO=bar
+dnl <not given> wxUSE_FOO=$DEFAULT_wxUSE_FOO
+dnl
+AC_DEFUN([WX_ARG_ENABLE_PARAM],
+ [
+ enablestring=$4
+ AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
+ AC_ARG_ENABLE($1, [$2],
+ [
+ wx_cv_use_$1="$3='$enableval'"
+ ],
+ [
+ wx_cv_use_$1='$3='$DEFAULT_$3
+ ])
+
+ eval "$wx_cv_use_$1"
+
+ AC_MSG_RESULT([$$3])
+ ])
dnl ===========================================================================
dnl Linker features test
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_VERSIONED_SYMBOLS],
[
- found_versioning=no
-
- dnl FIXME - doesn't work, Solaris linker doesn't accept wildcards
- dnl in the script.
- dnl dnl Check for known non-gcc cases:
- dnl case "${host}" in
- dnl *-*-solaris2* )
- dnl if test "x$GCC" != "xyes" ; then
- dnl LDFLAGS_VERSIONING="-M $1"
- dnl found_versioning=yes
- dnl fi
- dnl ;;
- dnl esac
-
- dnl Generic check for GCC or GCC-like behaviour (Intel C++, GCC):
- if test $found_versioning = no ; then
- 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
- rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
- ])
- if test $wx_cv_version_script = yes ; then
- LDFLAGS_VERSIONING="-Wl,--version-script,$1"
- fi
- fi
+ case "${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,$1"
+ fi
+ ;;
+ esac
])
fi
])
-
-dnl Available from the GNU Autoconf Macro Archive at:
-dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_const_cast.html
-dnl
-AC_DEFUN([AC_CXX_CONST_CAST],
-[AC_CACHE_CHECK(whether the compiler supports const_cast<>,
-ac_cv_cxx_const_cast,
-[AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;],
- ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no)
- AC_LANG_RESTORE
-])
-if test "$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
-])
projects / wxWidgets.git / blobdiff