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* [Bug libstdc++/15046] New: Math functions misdetected by cross configuration
@ 2004-04-21 16:01 drow at gcc dot gnu dot org
  2004-04-21 17:41 ` [Bug libstdc++/15046] " pinskia at gcc dot gnu dot org
                   ` (14 more replies)
  0 siblings, 15 replies; 16+ messages in thread
From: drow at gcc dot gnu dot org @ 2004-04-21 16:01 UTC (permalink / raw)
  To: gcc-bugs

crossconfig.m4 is pretty incomplete.  The example I found was for GNU/Linux
targeted crosses, but I suspect many of the others have the same problem;
likewise, by inspection, I think that this problem is in 3.4 also (it worked
in 3.3, and I haven't tested 3.4 yet).

The problem is that the *-linux* case doesn't define all the C99 math functions.
This means that sqrtf is provided in libmath/stubs.o as (float) sqrt (val).  sqrt
is a call to __builtin_sqrt, which GCC expands to sqrtf, generating an infinite
loop.

-- 
           Summary: Math functions misdetected by cross configuration
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: drow at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i386-pc-linux-gnu
GCC target triplet: arm-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
@ 2004-04-21 17:41 ` pinskia at gcc dot gnu dot org
  2004-04-23  3:00 ` rittle at latour dot rsch dot comm dot mot dot com
                   ` (13 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-04-21 17:41 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-21 17:18 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-04-21 17:18:59
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
  2004-04-21 17:41 ` [Bug libstdc++/15046] " pinskia at gcc dot gnu dot org
@ 2004-04-23  3:00 ` rittle at latour dot rsch dot comm dot mot dot com
  2004-04-23  4:28 ` drow at gcc dot gnu dot org
                   ` (12 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: rittle at latour dot rsch dot comm dot mot dot com @ 2004-04-23  3:00 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From rittle at latour dot rsch dot comm dot mot dot com  2004-04-23 02:36 -------
Subject: Re:  New: Math functions misdetected by cross
	configuration

> crossconfig.m4 is pretty incomplete.  The example I found was for GNU/Linux
> targeted crosses, but I suspect many of the others have the same problem;
> likewise, by inspection, I think that this problem is in 3.4 also (it worked
> in 3.3, and I haven't tested 3.4 yet). [...]

I think you are right.  We expect target maintainers (for those
targets which are usually crossed) to update the entries as they
(re-)attempt ports.  Sorry, but this is the protocol at the moment.
Offhand, I don't recall why autoconf doesn't work here...

Regards,
Loren


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
  2004-04-21 17:41 ` [Bug libstdc++/15046] " pinskia at gcc dot gnu dot org
  2004-04-23  3:00 ` rittle at latour dot rsch dot comm dot mot dot com
@ 2004-04-23  4:28 ` drow at gcc dot gnu dot org
  2004-05-14 12:26 ` bkoz at gcc dot gnu dot org
                   ` (11 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: drow at gcc dot gnu dot org @ 2004-04-23  4:28 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From drow at gcc dot gnu dot org  2004-04-23 03:38 -------
Subject: Re:  Math functions misdetected by cross configuration

Well, we can't use autoconf normally, because we can't necessarily run
link tests.  On the other hands:
  - sometimes we can run link tests
  - sometimes we could use compile tests instead; there's a macro to
    check for presence of a prototype.
I may experiment with these...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (2 preceding siblings ...)
  2004-04-23  4:28 ` drow at gcc dot gnu dot org
@ 2004-05-14 12:26 ` bkoz at gcc dot gnu dot org
  2004-05-14 12:38 ` cvs-commit at gcc dot gnu dot org
                   ` (10 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: bkoz at gcc dot gnu dot org @ 2004-05-14 12:26 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From bkoz at gcc dot gnu dot org  2004-05-13 17:19 -------

You have to have both link and compile visibility. Compile-time bits are often
obscured by defines on the compile line, FYI.

Here's a patch that fixes the linux crosses WRT C99 math. Give it a whirl, if
you can, and I'll put it on gcc-3.4.0 if it works for you.

-benjamin

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (3 preceding siblings ...)
  2004-05-14 12:26 ` bkoz at gcc dot gnu dot org
@ 2004-05-14 12:38 ` cvs-commit at gcc dot gnu dot org
  2004-05-16 22:23 ` cvs-commit at gcc dot gnu dot org
                   ` (9 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-05-14 12:38 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-05-13 17:50 -------
Subject: Bug 15046

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	bkoz@gcc.gnu.org	2004-05-13 17:49:54

Modified files:
	libstdc++-v3   : ChangeLog configure crossconfig.m4 

Log message:
	2004-05-13  Benjamin Kosnik  <bkoz@redhat.com>
	
	PR libstdc++/15046
	* crossconfig.m4: Add C99 math bits for linux crosses.
	* configure: Regenerate.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/ChangeLog.diff?cvsroot=gcc&r1=1.2473&r2=1.2474
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/configure.diff?cvsroot=gcc&r1=1.386&r2=1.387
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/crossconfig.m4.diff?cvsroot=gcc&r1=1.13&r2=1.14



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (4 preceding siblings ...)
  2004-05-14 12:38 ` cvs-commit at gcc dot gnu dot org
@ 2004-05-16 22:23 ` cvs-commit at gcc dot gnu dot org
  2004-05-17  0:10 ` pinskia at gcc dot gnu dot org
                   ` (8 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-05-16 22:23 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-05-15 21:25 -------
Subject: Bug 15046

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	bkoz@gcc.gnu.org	2004-05-15 21:25:46

Modified files:
	libstdc++-v3   : ChangeLog configure crossconfig.m4 

Log message:
	2004-05-15  Benjamin Kosnik  <bkoz@redhat.com>
	
	PR libstdc++/15046
	* crossconfig.m4: Add C99 math bits for linux crosses.
	* configure: Regenerate.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.2224.2.103&r2=1.2224.2.104
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/configure.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.373.4.8&r2=1.373.4.9
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/crossconfig.m4.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.11.4.2&r2=1.11.4.3



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (5 preceding siblings ...)
  2004-05-16 22:23 ` cvs-commit at gcc dot gnu dot org
@ 2004-05-17  0:10 ` pinskia at gcc dot gnu dot org
  2004-05-19 12:59 ` drow at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-17  0:10 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-15 23:41 -------
Fixed for 3.4.1.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (6 preceding siblings ...)
  2004-05-17  0:10 ` pinskia at gcc dot gnu dot org
@ 2004-05-19 12:59 ` drow at gcc dot gnu dot org
  2004-07-26 20:34 ` aoliva at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: drow at gcc dot gnu dot org @ 2004-05-19 12:59 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From drow at gcc dot gnu dot org  2004-05-18 19:51 -------
Subject: Re:  Math functions misdetected by cross configuration

Thanks.  I tested the patch on arm-linux (better late than never), and
now libstdc++-v3 contains the right set of stubs and no stubs which
recursively call themselves.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (7 preceding siblings ...)
  2004-05-19 12:59 ` drow at gcc dot gnu dot org
@ 2004-07-26 20:34 ` aoliva at gcc dot gnu dot org
  2004-07-26 21:49 ` pinskia at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: aoliva at gcc dot gnu dot org @ 2004-07-26 20:34 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From aoliva at gcc dot gnu dot org  2004-07-26 20:34 -------
This patch actually breaks uclinux, since it doesn't provide a number of the
functions defined here.  Also, the problem of stub functions recursively calling
themselves is not addressed at all.  I suppose we may need some additional
libstdc++ hackery to fix that.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (8 preceding siblings ...)
  2004-07-26 20:34 ` aoliva at gcc dot gnu dot org
@ 2004-07-26 21:49 ` pinskia at gcc dot gnu dot org
  2004-08-29 18:55 ` mmitchel at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-07-26 21:49 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.1                       |3.4.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (9 preceding siblings ...)
  2004-07-26 21:49 ` pinskia at gcc dot gnu dot org
@ 2004-08-29 18:55 ` mmitchel at gcc dot gnu dot org
  2004-11-01  0:46 ` mmitchel at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-08-29 18:55 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-29 18:55 -------
Postponed until GCC 3.4.3.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.2                       |3.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (10 preceding siblings ...)
  2004-08-29 18:55 ` mmitchel at gcc dot gnu dot org
@ 2004-11-01  0:46 ` mmitchel at gcc dot gnu dot org
  2005-05-19 17:36 ` mmitchel at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  14 siblings, 0 replies; 16+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-11-01  0:46 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-11-01 00:46 -------
Postponed until GCC 3.4.4.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.3                       |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (11 preceding siblings ...)
  2004-11-01  0:46 ` mmitchel at gcc dot gnu dot org
@ 2005-05-19 17:36 ` mmitchel at gcc dot gnu dot org
  2005-06-13  3:30 ` pinskia at gcc dot gnu dot org
  2005-07-15 21:54 ` pinskia at gcc dot gnu dot org
  14 siblings, 0 replies; 16+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-05-19 17:36 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.4                       |3.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (12 preceding siblings ...)
  2005-05-19 17:36 ` mmitchel at gcc dot gnu dot org
@ 2005-06-13  3:30 ` pinskia at gcc dot gnu dot org
  2005-07-15 21:54 ` pinskia at gcc dot gnu dot org
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-13  3:30 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-13 03:29 -------
(In reply to comment #9)
> This patch actually breaks uclinux, since it doesn't provide a number of the
> functions defined here.  Also, the problem of stub functions recursively calling
> themselves is not addressed at all.  I suppose we may need some additional
> libstdc++ hackery to fix that.
But that is a bug in the configure which makes uclinux thinks it is a glibc, really there should be a 
different triplit for those targets.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [Bug libstdc++/15046] Math functions misdetected by cross configuration
  2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
                   ` (13 preceding siblings ...)
  2005-06-13  3:30 ` pinskia at gcc dot gnu dot org
@ 2005-07-15 21:54 ` pinskia at gcc dot gnu dot org
  14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-15 21:54 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-15 21:52 -------
The orginal problem was fixed in 3.4.1.  The next problem is in PR 20353.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
   GCC host triplet|i386-pc-linux-gnu           |
 GCC target triplet|arm-unknown-linux-gnu       |arm-*-linux-gnu
         Resolution|                            |FIXED
   Target Milestone|3.4.5                       |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15046


^ permalink raw reply	[flat|nested] 16+ messages in thread
end of thread, other threads:[~2005-07-15 21:52 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-04-21 16:01 [Bug libstdc++/15046] New: Math functions misdetected by cross configuration drow at gcc dot gnu dot org
2004-04-21 17:41 ` [Bug libstdc++/15046] " pinskia at gcc dot gnu dot org
2004-04-23  3:00 ` rittle at latour dot rsch dot comm dot mot dot com
2004-04-23  4:28 ` drow at gcc dot gnu dot org
2004-05-14 12:26 ` bkoz at gcc dot gnu dot org
2004-05-14 12:38 ` cvs-commit at gcc dot gnu dot org
2004-05-16 22:23 ` cvs-commit at gcc dot gnu dot org
2004-05-17  0:10 ` pinskia at gcc dot gnu dot org
2004-05-19 12:59 ` drow at gcc dot gnu dot org
2004-07-26 20:34 ` aoliva at gcc dot gnu dot org
2004-07-26 21:49 ` pinskia at gcc dot gnu dot org
2004-08-29 18:55 ` mmitchel at gcc dot gnu dot org
2004-11-01  0:46 ` mmitchel at gcc dot gnu dot org
2005-05-19 17:36 ` mmitchel at gcc dot gnu dot org
2005-06-13  3:30 ` pinskia at gcc dot gnu dot org
2005-07-15 21:54 ` pinskia at gcc dot gnu dot org

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