-dnl ---------------------------------------------------------------------------
-dnl
-dnl Macros for configure.in for wxWindows by Robert Roebling, Phil Blecker,
-dnl Vadim Zeitlin and Ron Lee
-dnl
-dnl This script is under the wxWindows licence.
-dnl
-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 ===========================================================================
-
-dnl ---------------------------------------------------------------------------
-dnl call WX_PATH_FIND_INCLUDES(search path, header name), sets ac_find_includes
-dnl to the full name of the file that was found or leaves it empty if not found
-dnl ---------------------------------------------------------------------------
-AC_DEFUN([WX_PATH_FIND_INCLUDES],
-[
-ac_find_includes=
-for ac_dir in $1 /usr/include;
- do
- if test -f "$ac_dir/$2"; then
- ac_find_includes=$ac_dir
- break
- fi
- done
-])
-
-dnl ---------------------------------------------------------------------------
-dnl call WX_PATH_FIND_LIBRARIES(search path, header 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 $1 /usr/lib;
- do
- for ac_extension in a so sl dylib; do
- if test -f "$ac_dir/lib$2.$ac_extension"; then
- ac_find_libraries=$ac_dir
- break 2
- fi
- done
- done
-])
-
-dnl ---------------------------------------------------------------------------
-dnl Path to include, already defined
-dnl ---------------------------------------------------------------------------
-AC_DEFUN([WX_INCLUDE_PATH_EXIST],
-[
- dnl never add -I/usr/include to the CPPFLAGS
- if test "x$1" = "x/usr/include"; then
- ac_path_to_include=""
- else
- 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 ---------------------------------------------------------------------------
-AC_DEFUN([WX_LINK_PATH_EXIST],
-[
- echo "$2" | grep "\-L$1" > /dev/null
- result=$?
- if test $result = 0; then
- ac_path_to_link=""
- else
- ac_path_to_link=" -L$1"
- fi
-])
-
-dnl ===========================================================================
-dnl C++ features test
-dnl ===========================================================================
-
-dnl ---------------------------------------------------------------------------
-dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" <iostream> header
-dnl or only the old <iostream.h> one - it may be generally assumed that if
-dnl <iostream> exists, the other "new" headers (without .h) exist too.
-dnl
-dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false)
-dnl ---------------------------------------------------------------------------
-
-AC_DEFUN([WX_CPP_NEW_HEADERS],
-[
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- AC_CHECK_HEADERS(iostream)
-
- if test "$ac_cv_header_iostream" = "yes" ; then
- ifelse([$1], , :, [$1])
- else
- ifelse([$2], , :, [$2])
- fi
-
- AC_LANG_RESTORE
-])
-
-dnl ---------------------------------------------------------------------------
-dnl WX_CPP_BOOL checks whether the C++ compiler has a built in bool type
-dnl
-dnl call WX_CPP_BOOL - will define HAVE_BOOL if the compiler supports bool
-dnl ---------------------------------------------------------------------------
-
-AC_DEFUN([WX_CPP_BOOL],
-[
- AC_CACHE_CHECK([if C++ compiler supports bool], wx_cv_cpp_bool,
- [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- AC_TRY_COMPILE(
- [
- ],
- [
- bool b = true;
-
- return 0;
- ],
- [
- wx_cv_cpp_bool=yes
- ],
- [
- wx_cv_cpp_bool=no
- ]
- )
-
- AC_LANG_RESTORE
- ])
-
- if test "$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
-dnl ---------------------------------------------------------------------------
-
-AC_DEFUN([WX_CPP_EXPLICIT],
-[
- AC_CACHE_CHECK([if C++ compiler supports the explicit keyword],
- wx_cv_explicit,
- [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- dnl do the test in 2 steps: first check that the compiler knows about the
- dnl explicit keyword at all and then verify that it really honours it
- AC_TRY_COMPILE(
- [
- class Foo { public: explicit Foo(int) {} };
- ],
- [
- return 0;
- ],
- [
- AC_TRY_COMPILE(
- [
- class Foo { public: explicit Foo(int) {} };
- static void TakeFoo(const Foo& foo) { }
- ],
- [
- TakeFoo(17);
- return 0;
- ],
- wx_cv_explicit=no,
- wx_cv_explicit=yes
- )
- ],
- wx_cv_explicit=no
- )
-
- AC_LANG_RESTORE
- ])
-
- if test "$wx_cv_explicit" = "yes"; then
- AC_DEFINE(HAVE_EXPLICIT)
- fi
-])
-
-dnl ---------------------------------------------------------------------------
-dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
-dnl ---------------------------------------------------------------------------
-
-AC_DEFUN([WX_C_BIGENDIAN],
-[AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian,
-[ac_cv_c_bigendian=unknown
-# See if sys/param.h defines the BYTE_ORDER macro.
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/param.h>], [
-#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
- bogus endian macros
-#endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/param.h>], [
-#if BYTE_ORDER != BIG_ENDIAN
- not big endian
-#endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
-if test $ac_cv_c_bigendian = unknown; then
-AC_TRY_RUN([main () {
- /* Are we little or big endian? From Harbison&Steele. */
- union
- {
- long l;
- char c[sizeof (long)];
- } u;
- u.l = 1;
- exit (u.c[sizeof (long) - 1] == 1);
-}], [ac_cv_c_bigendian=no], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=unknown])
-fi])
-if test $ac_cv_c_bigendian = unknown; then
- AC_MSG_WARN([Assuming little-endian target machine - this may be overriden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file])
-fi
-if test $ac_cv_c_bigendian = yes; then
- AC_DEFINE(WORDS_BIGENDIAN)
-fi
-])
-
-dnl ---------------------------------------------------------------------------
-dnl override AC_ARG_ENABLE/WITH to cache the results in .cache file
-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)
-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='$3=yes'
- elif test "$withval" = no; then
- ac_cv_use_$1='$3=no'
- elif test "$withval" = sys; then
- ac_cv_use_$1='$3=sys'
- elif test "$withval" = builtin; then
- ac_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_$3
- ])
-
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
-
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
- elif test "$$3" = no; then
- AC_MSG_RESULT(no)
- elif test "$$3" = sys; then
- AC_MSG_RESULT([system version])
- elif test "$$3" = builtin; then
- AC_MSG_RESULT([builtin version])
- else
- AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
- fi
- ])
-
-dnl this macro checks for a command line argument and caches the result
-dnl usage: WX_ARG_WITH(option, helpmessage, variable-name)
-AC_DEFUN([WX_ARG_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'
- else
- ac_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_$3
- ])
-
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
-
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
- else
- AC_MSG_RESULT(no)
- fi
- ])
-
-dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH
-dnl usage: WX_ARG_ENABLE(option, helpmessage, variable-name, enablestring)
-dnl
-dnl enablestring is a hack and allows to show "checking for --disable-foo"
-dnl message when running configure instead of the default "checking for
-dnl --enable-foo" one whih is useful for the options enabled by default
-AC_DEFUN([WX_ARG_ENABLE],
- [
- enablestring=$4
- AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
- no_cache=0
- AC_ARG_ENABLE($1, [$2],
- [
- if test "$enableval" = yes; then
- ac_cv_use_$1='$3=yes'
- else
- ac_cv_use_$1='$3=no'
- fi
- ],
- [
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- fi
-
- ac_cv_use_$1='$3='$DEFAULT_$3
- ])
-
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
-
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
- else
- AC_MSG_RESULT(no)
- fi
- ])
-
-
-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 $CXX flags needed to use
-dnl version script file named versionfile
-dnl
-dnl call WX_VERSIONED_SYMBOLS(versionfile)
-dnl ---------------------------------------------------------------------------
-AC_DEFUN([WX_VERSIONED_SYMBOLS],
-[
- found_versioning=no
-
- dnl FIXME - doesn't work, Solaris linker doesn't accept wildcards
- dnl in the script.
- dnl dnl Check for known non-gcc cases:
- dnl case "${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,$1"
- fi
- fi
-])
-
-
-dnl ===========================================================================
-dnl "3rd party" macros included here because they are not widely available
-dnl ===========================================================================
-
-dnl ---------------------------------------------------------------------------
-dnl test for availability of iconv()
-dnl ---------------------------------------------------------------------------
-
-dnl From Bruno Haible.
-
-AC_DEFUN([AM_ICONV],
-[
- dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
- dnl those with the standalone portable GNU libiconv installed).
-
- AC_ARG_WITH([libiconv-prefix],
-[ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [
- for dir in `echo "$withval" | tr : ' '`; do
- if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
- if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
- done
- ])
-
- AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
- am_cv_func_iconv="no, consider installing GNU libiconv"
- am_cv_lib_iconv=no
- AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
- [iconv_t cd = iconv_open("","");
- iconv(cd,NULL,NULL,NULL,NULL);
- iconv_close(cd);],
- am_cv_func_iconv=yes)
- if test "$am_cv_func_iconv" != yes; then
- am_save_LIBS="$LIBS"
- LIBS="$LIBS -liconv"
- AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
- [iconv_t cd = iconv_open("","");
- iconv(cd,NULL,NULL,NULL,NULL);
- iconv_close(cd);],
- am_cv_lib_iconv=yes
- am_cv_func_iconv=yes)
- LIBS="$am_save_LIBS"
- fi
- ])
- if test "$am_cv_func_iconv" = yes; then
- AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
- AC_CACHE_CHECK([if iconv needs const], wx_cv_func_iconv_const,
- AC_TRY_COMPILE([
-#include <stdlib.h>
-#include <iconv.h>
-extern
-#ifdef __cplusplus
-"C"
-#endif
-#if defined(__STDC__) || defined(__cplusplus)
-size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
-#else
-size_t iconv();
-#endif
- ],
- [],
- wx_cv_func_iconv_const="no",
- wx_cv_func_iconv_const="yes"
- )
- )
-
- iconv_const=
- if test "x$wx_cv_func_iconv_const" = "xyes"; then
- iconv_const="const"
- fi
-
- AC_DEFINE_UNQUOTED(ICONV_CONST, $iconv_const,
- [Define as const if the declaration of iconv() needs const.])
- fi
- LIBICONV=
- if test "$am_cv_lib_iconv" = yes; then
- LIBICONV="-liconv"
- fi
- AC_SUBST(LIBICONV)
-])
-
-dnl ---------------------------------------------------------------------------
-dnl AC_SYS_LARGEFILE (partly based on the code from autoconf 2.5x)
-dnl ---------------------------------------------------------------------------
-
-dnl WX_SYS_LARGEFILE_TEST
-dnl
-dnl NB: original autoconf test was checking if compiler supported 6 bit off_t
-dnl arithmetic properly but this failed miserably with gcc under Linux
-dnl whereas the system still supports 64 bit files, so now simply check
-dnl that off_t is big enough
-define(WX_SYS_LARGEFILE_TEST,
-[typedef struct {
- unsigned int field: sizeof(off_t) == 8;
-} wxlf;
-])
-
-
-dnl WX_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, CACHE-VAR)
-define(WX_SYS_LARGEFILE_MACRO_VALUE,
-[
- AC_CACHE_CHECK([for $1 value needed for large files], [$3],
- [
- AC_TRY_COMPILE([#define $1 $2
- #include <sys/types.h>],
- WX_SYS_LARGEFILE_TEST,
- [$3=$2],
- [$3=no])
- ]
- )
-
- if test "$$3" != no; then
- wx_largefile=yes
- AC_DEFINE_UNQUOTED([$1], [$$3])
- fi
-])
-
-
-dnl AC_SYS_LARGEFILE
-dnl ----------------
-dnl By default, many hosts won't let programs access large files;
-dnl one must use special compiler options to get large-file access to work.
-dnl For more details about this brain damage please see:
-dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
-AC_DEFUN([AC_SYS_LARGEFILE],
-[AC_ARG_ENABLE(largefile,
- [ --disable-largefile omit support for large files])
-if test "$enable_largefile" != no; then
- dnl _FILE_OFFSET_BITS==64 is needed for Linux, Solaris, ...
- dnl _LARGE_FILES -- for AIX
- wx_largefile=no
- WX_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits)
- if test "x$wx_largefile" != "xyes"; then
- WX_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files)
- fi
-
- AC_MSG_CHECKING(if large file support is available)
- if test "x$wx_largefile" = "xyes"; then
- AC_DEFINE(HAVE_LARGEFILE_SUPPORT)
- fi
- AC_MSG_RESULT($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