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- Issue #14324: Fix configure tests for cross builds.

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when configured --with(out)-computed-gotos for a cross, use this value instead of defaulting to no.
This commit is contained in:
Matthias Klose 2012-03-15 19:51:34 +01:00
parent 3b739b149b
commit b17289e199
2 changed files with 73 additions and 67 deletions
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51
configure.ac
View file

@ -4239,30 +4239,6 @@ then
wide chars that would be converted.])
fi
AC_MSG_CHECKING(whether $CC supports computed gotos)
AC_CACHE_VAL(ac_cv_computed_gotos,
AC_RUN_IFELSE([AC_LANG_SOURCE([[[
int main(int argc, char **argv)
{
static void *targets[1] = { &&LABEL1 };
goto LABEL2;
LABEL1:
return 0;
LABEL2:
goto *targets[0];
return 1;
}
]]])],
[ac_cv_computed_gotos=yes],
[ac_cv_computed_gotos=no],
[ac_cv_computed_gotos=no]))
AC_MSG_RESULT($ac_cv_computed_gotos)
if test "$ac_cv_computed_gotos" = yes
then
AC_DEFINE(HAVE_COMPUTED_GOTOS, 1,
[Define if the C compiler supports computed gotos.])
fi
# Check for --with-computed-gotos
AC_MSG_CHECKING(for --with-computed-gotos)
AC_ARG_WITH(computed-gotos,
@ -4284,6 +4260,33 @@ fi
],
[AC_MSG_RESULT(no value specified)])
AC_MSG_CHECKING(whether $CC supports computed gotos)
AC_CACHE_VAL(ac_cv_computed_gotos,
AC_RUN_IFELSE([AC_LANG_SOURCE([[[
int main(int argc, char **argv)
{
static void *targets[1] = { &&LABEL1 };
goto LABEL2;
LABEL1:
return 0;
LABEL2:
goto *targets[0];
return 1;
}
]]])],
[ac_cv_computed_gotos=yes],
[ac_cv_computed_gotos=no],
[if test "${with_computed_gotos+set}" = set; then
ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos"
else
ac_cv_computed_gotos=no
fi]))
AC_MSG_RESULT($ac_cv_computed_gotos)
case "$ac_cv_computed_gotos" in yes*)
AC_DEFINE(HAVE_COMPUTED_GOTOS, 1,
[Define if the C compiler supports computed gotos.])
esac
case $ac_sys_system in
AIX*)
AC_DEFINE(HAVE_BROKEN_PIPE_BUF, 1, [Define if the system reports an invalid PIPE_BUF value.]) ;;