On May 26, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
> + Find a means to extract integers from the compiler.
> + Use this technology to compute `sizeof' even when cross-compiling.
> + Ideas and initial suggestion by Kaveh Ghazi.
> + Binary search by Bruno Haible.
Ok
--
Ale
Here is my proposal.
Index: ChangeLog
===
RCS file: /cvs/autoconf/ChangeLog,v
retrieving revision 1.652
diff -u -r1.652 ChangeLog
--- ChangeLog 2000/05/26 09:42:13 1.652
+++ ChangeLog 2000/05/26 10:15:47
@@ -1,3 +1,20 @@
+200
Akim> jk: dju Y dfgg qwer tyu]
Llps, slrry, I meant
Nl, but I wioo send lne!
jk: dju Y dfgg qwer tyu]
On May 26, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
> |On May 25, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
> |> # AC_LANG_BOLL_COMPILE_TRY(PROLOGUE, EXPRESSION)
> | s/BOLL/BOOL/
> Lps, thanks!
> Is this a LK?
I cluldn't find a patch anywhere. Was that supplsed
|On May 25, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
|> # AC_LANG_BOLL_COMPILE_TRY(PROLOGUE, EXPRESSION)
| s/BOLL/BOOL/
Lps, thanks!
Is this a LK?
On May 25, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
> # AC_LANG_BOLL_COMPILE_TRY(PROLOGUE, EXPRESSION)
s/BOLL/BOOL/
--
Alexandre OlivaEnjoy Guaraná, see http://www.ic.unicamp.br/~oliva/
Cygnus Solutions, a Red Hat companyaoliva@{redhat, cygnus}.com
Free Softwa
Updated. AC_CHECK_SIZEOF has never been released with support of
shell variables, not my stepping back is backward compatible, and
there is no real loss.
/tmp % ./configure nostromo 12:08
checking for gcc... gcc
checking whether the C compiler works
Alexandre Oliva writes:
> It's outdated. The C and the C++ standards specify that
If everyone followed standards then we wouldn't need Autoconf, would we?
And of course Autoconf definitely supports pre-ANSI C.
> Indeed. How about ``The size of a `long int', as computed by sizeof''.
Sounds re
On May 19, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
> Should AC_CHECK_SIZEOF(foo) run AC_CHECK_TYPE(foo) first?
Yup
--
Alexandre OlivaEnjoy Guaraná, see http://www.ic.unicamp.br/~oliva/
Cygnus Solutions, a Red Hat companyaoliva@{redhat, cygnus}.com
Free Software Developer and
On May 19, 2000, Peter Eisentraut <[EMAIL PROTECTED]> wrote:
> Alexandre Oliva writes:
>> >[The number of bytes in a `]$1['.])
>> ^ chars, actually
>>
>> sizeof(char) == 1 always holds, but it doesn't have to be a byte.
> K&R1 says:
It's outdated. The C and the C++ sta
> "Peter" == Peter Eisentraut <[EMAIL PROTECTED]> writes:
Peter> Akim Demaille writes:
>> Here is my interpretation of your work.
Peter> That looks very nice, but there is one problem I see: When
Peter> cross-compiling, AC_CHECK_SIZEOF with a non-existant type
Peter> seemingly runs forever.
Alexandre Oliva writes:
> >[The number of bytes in a `]$1['.])
> ^ chars, actually
>
> sizeof(char) == 1 always holds, but it doesn't have to be a byte.
K&R1 says:
"The expression `sizeof(object)' yields an integer equal to the size o
Akim Demaille writes:
> Here is my interpretation of your work.
That looks very nice, but there is one problem I see: When
cross-compiling, AC_CHECK_SIZEOF with a non-existant type seemingly runs
forever. Perhaps it should check the existance of the type first.
Also, what I'd find useful is a w
> "Alexandre" == Alexandre Oliva <[EMAIL PROTECTED]> writes:
Alexandre> Really cute :-) Congrats,
Thanks :) I still wonder about the name (_AC_COMPUTE etc.). I don't
know too well.
Alexandre> sizeof(char) == 1 always holds, but it doesn't have to be a
Alexandre> byte.
Aha! indeed. Than
On May 16, 2000, Akim Demaille <[EMAIL PROTECTED]> wrote:
> Here is my interpretation of your work. Alexandre, what do you think
> about it?
Really cute :-) Congrats,
>[The number of bytes in a `]$1['.])
^ chars, actually
sizeof(cha
> "Bruno" == Bruno Haible <[EMAIL PROTECTED]> writes:
Bruno> Hi Akim, Your implementation indeed has the aesthetics you were
Bruno> asking for; congratulations.
Thanks :)
>> `conftestdate'.
Bruno> That should be `conftestval', not `conftestdate'.
Gromph, thanks!
Akim
Hi Akim,
Your implementation indeed has the aesthetics you were asking for;
congratulations.
> # AC_LANG_COMPUTE(PROLOGUE, EXPRESSION)
> # -
> # Produce a program that saves the runtime evaluation of the integer
> # EXPRESSION into `conftestdate'.
That should
Hi Bruno,
Here is my interpretation of your work. Alexandre, what do you think
about it?
This implementation requires CVS Autoconf. Install it as
`configure.in' and CVS autoconf it to give it a try.
# aclang.m4
# AC_LANG_BOOLEAN(PROLOGUE, EXPRESSI
> "Bruno" == Bruno Haible <[EMAIL PROTECTED]> writes:
>> Does [testing the signedness] make sense for other types than `char'?
Bruno> Yes. In particular size_t and wchar_t come to mind.
Wow, signed size_t :)
Where can we see that? What effect can it have so that you might need
to check fo
Akim Demaille writes:
> Bruno> 2) AC_CHECK_TYPE_SIGNED using
>
> Bruno> #define expr ((expr)(-1) < (expr)0)
>
> Good point.
>
> Does this test make sense for other types than `char'?
Yes. In particular size_t and wchar_t come to mind.
Bruno
> "Bruno" == Bruno Haible <[EMAIL PROTECTED]> writes:
>> Just say no to
>>
>> changequote() patsubst($1, [^a-z]) changequote([, ])
>>
>> but welcome
>>
>> patsubst([$1], [[^a-z]])
Bruno> Ah! The outer [] are against m4, and the inner ones "[^a-z]"
Bruno> are the patsubst argument, right?
Akim Demaille writes:
> Just a note about changequote. Although you would certainly have
> problems with the characters [ and ] themselves, there is really no
> reason to use it when using patsubst. This is a very bad (IMHO) idiom
> which is spread by Autoconf itself.
>
> Just say no to
>
>
> "Akim" == Akim Demaille <[EMAIL PROTECTED]> writes:
Akim> It's more readable, and even `more true' (don't know how to say
Akim> this in proper English, `more correct' I suppose).
Got it! `Accurate', isn't it?
> "Bruno" == Bruno Haible <[EMAIL PROTECTED]> writes:
Bruno> You should have seen the big patsubst while it was still in one
Bruno> big line :-)
:) :)
Just a note about changequote. Although you would certainly have
problems with the characters [ and ] themselves, there is really no
reason
Akim Demaille writes:
> Also, it has a hidden bell: take a look at this:
>
> | ac_ac_Sizeof=`echo "ac_cv_sizeof_$int" | $ac_tr_sh`
> | if eval "test \"\${$ac_ac_Sizeof+set}\" = set"; then
> | echo $ECHO_N "(cached) $ECHO_C" >&6
> | eval "$ac_ac_Sizeof=`cat conftestval`"
> | eval "$ac_ac_Si
> "Bruno" == Bruno Haible <[EMAIL PROTECTED]> writes:
Bruno> Akim Demaille writes:
>> In addition, the style you used is very much 2.13 like, but it is
>> completely different from the style used for CVS Autoconf. You can
>> delete almost all your `dnl's, use `#' for comments, not `dnl' etc
Akim Demaille writes:
> In addition, the style you used is very much 2.13 like, but it is
> completely different from the style used for CVS Autoconf. You can
> delete almost all your `dnl's, use `#' for comments, not `dnl' etc.
> Finally, you used changequote, which is eradicated from Autoconf,
Hi Bruno,
I like the idea of the patch, yet several people proposed patch along
this way, but I don't like the implementation. There's a lot of hair
which is due to the fact that you want to cache low level details,
such as what you computed. I think this is not right, you should
cache what you
Hi,
AC_CHECK_SIZEOF currently does not know how to determine the value when
crosscompiling. Here is a patch which enable this. It is based on the
fact that all C and C++ compilers reject declarations of arrays with
negative size.
What the patch does, essentially, is to compile
int _array_ [1 -
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