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Require specific user action to compile without 64-bit support

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The D-Bus type system isn't implementable without 64-bit support, although
for historical reasons we have some sort of semi-working support for
platforms with no 64-bit integers. Let's find out whether any
practically relevant platform still lacks these types...

(GLib appears to have required 64-bit integer types since 2001.)

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=35114
Reviewed-by: Lennart Poettering <lennart@poettering.net>
This commit is contained in:
Simon McVittie 2011-03-08 13:32:06 +00:00
parent 24cdbddbe6
commit 9759973233
1 changed files with 42 additions and 4 deletions
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46
configure.ac
View file

@ -228,6 +228,12 @@ AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64)
AC_ARG_WITH([64-bit],
[AS_HELP_STRING([--without-64-bit],
[If you have to use this option, please report it as a bug])],
[],
[with_64_bit=yes])
### See what our 64 bit type is called
AC_MSG_CHECKING([64-bit integer type])
@ -265,13 +271,32 @@ $ac_cv_sizeof___int64)
;;
esac
if test -z "$dbusint64" ; then
AS_IF(
[test "x$with_64_bit" = xno],
[
DBUS_INT64_TYPE="no_int64_type_detected"
DBUS_HAVE_INT64=0
DBUS_INT64_CONSTANT=
DBUS_UINT64_CONSTANT=
AC_MSG_RESULT([none found])
else
AC_MSG_RESULT([disabled via --without-64-bit])
],
dnl else if
[test -z "$dbusint64"],
[AC_MSG_RESULT([not found])
AC_MSG_ERROR([Could not find a 64-bit integer type.
Please report a bug here with details of your platform and compiler:
http://bugs.freedesktop.org/enter_bug.cgi?product=DBus&component=core
To compile D-Bus with all 64-bit integer types removed (not recommended), use
the option "--without-64-bit".
This option is likely to be removed in future, unless you report that your
platform needs it.])
],
dnl else
[
DBUS_INT64_TYPE="$dbusint64"
DBUS_HAVE_INT64=1
DBUS_INT64_CONSTANT="$dbusint64_constant"
@ -280,7 +305,7 @@ else
AC_DEFINE_UNQUOTED(DBUS_INT64_PRINTF_MODIFIER, [$dbusint64_printf_modifier], [Define to printf modifier for 64 bit integer type])
fi
AC_MSG_RESULT($DBUS_INT64_TYPE)
fi
])
AC_SUBST(DBUS_INT64_TYPE)
AC_SUBST(DBUS_INT64_CONSTANT)
@ -1745,3 +1770,16 @@ if test x$dbus_use_libxml = xtrue; then
echo
echo "WARNING: You have chosen to use libxml as your xml parser however this code path is not maintained by the D-Bus developers and if it breaks you get to keep the pieces. If you have selected this option in err please reconfigure with expat (e.g. --with-xml=expat)."
fi
if test "x$DBUS_HAVE_INT64" = x0; then
AC_MSG_WARN([You have disabled 64-bit integers via --without-64-bit.
This removes parts of the standard D-Bus API and ABI (the 't' and 'x'
typecodes, the dbus_int64_t and dbus_uint64_t types, etc.) and should only be
used if your compiler lacks support for 64-bit integers. Please report a bug
with details of your platform and compiler.
This option is likely to be removed in future, unless the D-Bus developers
receive reports that it is still needed.
])
fi