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Submitted by : (unknown) at: 2007-11-17T22:57:35-08:00 (10 years ago)
Name :
Axiom Version :
Category : Severity : Status :
Optional subject :  
Optional comment :

On Tue, 4 Jan 2005, root wrote:

| > Is this a known issue?
|
| it is now :-)
|
| i'll have to check what versions of the compiler i'm using.
| i'll also check whether ptermio is used.

Well, I think my brain is now somewhere in the middle of the atlantic
ocean, so I'm getting  better :-)  I looked into edible.c.
The code at issue is:

#ifdef logterm
    {
      struct termio ptermio;
      char pbuff[1024];
      tcgetattr(contNum, &ptermio);
      sprintf(pbuff, "child's settings: Lflag = %d, Oflag = %d, Iflag = %d\n",
              ptermio.c_lflag, ptermio.c_oflag, ptermio.c_iflag);
      write(logfd, pbuff, strlen(pbuff));
    }
#endif

line 276 is
      struct termio ptermio;

so:
  (1) it looks to me that the error is a mispelling:
      'struct termios' should 'struct termio'.

  (2) ptermio is indeed used.

Correcting (1) as indicated led to a successful compilation.
The whole axiom build is still underway.


------------------------------------------------------------


further info --Sat, 22 Jan 2005 03:55:35 -0600

| On Tue, 4 Jan 2005, root wrote:
| 
| | > Is this a known issue?
| |
| | it is now :-)
| |
| | i'll have to check what versions of the compiler i'm using.
| | i'll also check whether ptermio is used.
| 
| Well, I think my brain is now somewhere in the middle of the atlantic
| ocean, so I'm getting  better :-)  I looked into edible.c.

No, not better ;-/

| The code at issue is:
| 
| #ifdef logterm
|     {
|       struct termio ptermio;
|       char pbuff[1024];
|       tcgetattr(contNum, &ptermio);
|       sprintf(pbuff, "child's settings: Lflag = %d, Oflag = %d, Iflag = %d\n",
|               ptermio.c_lflag, ptermio.c_oflag, ptermio.c_iflag);
|       write(logfd, pbuff, strlen(pbuff));
|     }
| #endif
| 
| line 276 is
|       struct termio ptermio;
| 
| so:
|   (1) it looks to me that the error is a mispelling:
|       'struct termios' should 'struct termio'.

That is inverted:  it is 'struct termio' (current code) that should be
'struct termios'. 





more info --Sat, 22 Jan 2005 03:57:08 -0600

| Gabriel,
| 
| hmm, can you do me a favor and try the following:
| 
| cd obj/linux/clef
| gcc -E edible.c
| 
| and look for the lines:
| 
| /usr/include/termios.h

The directive

    #include <termios.h> 

gets expanded as expected.

| 
| and
| 
| struct termios

that strucrure is defined as expected -- it is at several place in
edible.c.  The only problematic place is at line 276, where "struct
termio" (without 's') used used instead of of "struct termios".

Correcting what I believe to be the missing "s", allowed me to build
and install axiom. 

| these must be included in your system somewhere or the build
| would fail at the include step.

Indeed.

| In fact, it would be interesting to see the output of the gcc -E edible.c
| line.

see attached.





yet more info --Sat, 22 Jan 2005 03:58:45 -0600

| Gabriel,
| 
| Steve Wilson points out that the CHANGELOG contains the lines:
| 
| 20041116 tpd src/clef/edible.c termios -> termio
| 20040730 sxw src/clef/edible.c termio -> termios
| 
| so it appears that on some systems we need termio and
| on others we need termios.

I see.  I can confirm that on GNU/Linux, and generally (recent) glibc
systems, one needs termios.  I also looked on solaris plateforms
(apparently currently not supported by axiom), one needs termios there
too. 
I guess that is something one would need to test for at configure time. 

| Steve believes that this is dead code because at the top
| of the file we see:
| 
| #ifdef unlikely
| ...
| #define logterm
| 
| and the termios code is protected by 
| #ifdef logterm

I can see that the fragment is guarded by 
  
   #ifdef logterm

but for some reasons that code is reached on my system (SuSE-9.0, 
with glibc-2.3.2).

GCC with the option -dM dumps macros that are defined.  I can confirm
that gcc -E -dM edible.c shows a line where logterm is defined.  More
precisely, I have the following

   [....]
   #define _SC_2_PBS_MESSAGE _SC_2_PBS_MESSAGE
   #define _GCC_SIZE_T 
   #define CEOT CEOF
   #define logterm 1  /* <===== here */
   #define __INO64_T_TYPE __UQUAD_TYPE
   #define _SC_AVPHYS_PAGES _SC_AVPHYS_PAGES
   #define _IO_LINKED 0x80
   [....]

so my gut feeling is that that macro gets defined as internal to some
system header files.  

That gut feeling turns out to be wrong, as replacing logterm with
AXIOM_LOGTERM throughout edible.c still leads to the same problem.
So I operated on a second assumption: the macro "unlikely" must have
been defined somewhere else.  Bingo!  With the help of gcc -E -dM, I
could spot

    [...]
    #define __KEY_T_TYPE __S32_TYPE
    #define sigev_notify_function _sigev_un._sigev_thread._function
    #define likely(x) __builtin_expect((x),1)   /* <==== here */
    #define FAPPEND O_APPEND
    #define _XOPEN_ENH_I18N 1
    [...] 
    #define F_ULOCK 0
    #define errno (*__errno_location ())
    #define unlikely(x) __builtin_expect((x),0) /* <=== here too */
    #define EL2NSYNC 45
    #define _IO_off64_t _G_off64_t
    [...]

I can't tell you right now which system header files define those
questionable macros (I know what they mean, but I don't see what they
are doing there).  It seems that some glibc-based systems have taken
the right to hijack those names.  
Maybe Axiom might prefer to spell its macros all in caps, and probably
prefixed with AXIOM_ ...

| still checking....

I hope the above helps.





continuing --Sat, 22 Jan 2005 04:00:35 -0600

===============================================================================================
| Gabriel,
| 
| Ok. I'm closer.
| I was working on a BSD port at the time and it is likely that
| BSD wants termio while linux wants termios.

ah, that is the most likely reason.

| 
| Can you modify the pamphlet file back to the original form,
| type make, and send me the console log?






additional information --Mon, 24 Jan 2005 21:39:42 -0600

=========================================================================================
| Gabriel,
| 
| Steve Wilson points out that the CHANGELOG contains the lines:
| 
| 20041116 tpd src/clef/edible.c termios -> termio
| 20040730 sxw src/clef/edible.c termio -> termios
| 
| so it appears that on some systems we need termio and
| on others we need termios.

I see.  I can confirm that on GNU/Linux, and generally (recent) glibc
systems, one needs termios.  I also looked on solaris plateforms
(apparently currently not supported by axiom), one needs termios there
too. 
I guess that is something one would need to test for at configure time. 

| Steve believes that this is dead code because at the top
| of the file we see:
| 
| #ifdef unlikely
| ...
| #define logterm
| 
| and the termios code is protected by 
| #ifdef logterm

I can see that the fragment is guarded by 
  
   #ifdef logterm

but for some reasons that code is reached on my system (SuSE-9.0, 
with glibc-2.3.2).

GCC with the option -dM dumps macros that are defined.  I can confirm
that gcc -E -dM edible.c shows a line where logterm is defined.  More
precisely, I have the following

   [....]
   #define _SC_2_PBS_MESSAGE _SC_2_PBS_MESSAGE
   #define _GCC_SIZE_T 
   #define CEOT CEOF
   #define logterm 1  /* <===== here */
   #define __INO64_T_TYPE __UQUAD_TYPE
   #define _SC_AVPHYS_PAGES _SC_AVPHYS_PAGES
   #define _IO_LINKED 0x80
   [....]

so my gut feeling is that that macro gets defined as internal to some
system header files.  

That gut feeling turns out to be wrong, as replacing logterm with
AXIOM_LOGTERM throughout edible.c still leads to the same problem.
So I operated on a second assumption: the macro "unlikely" must have
been defined somewhere else.  Bingo!  With the help of gcc -E -dM, I
could spot

    [...]
    #define __KEY_T_TYPE __S32_TYPE
    #define sigev_notify_function _sigev_un._sigev_thread._function
    #define likely(x) __builtin_expect((x),1)   /* <==== here */
    #define FAPPEND O_APPEND
    #define _XOPEN_ENH_I18N 1
    [...] 
    #define F_ULOCK 0
    #define errno (*__errno_location ())
    #define unlikely(x) __builtin_expect((x),0) /* <=== here too */
    #define EL2NSYNC 45
    #define _IO_off64_t _G_off64_t
    [...]

I can't tell you right now which system header files define those
questionable macros (I know what they mean, but I don't see what they
are doing there).  It seems that some glibc-based systems have taken
the right to hijack those names.  
Maybe Axiom might prefer to spell its macros all in caps, and probably
prefixed with AXIOM_ ...



additional information --Mon, 24 Jan 2005 21:42:31 -0600

================================================================================
  Freshly updated from CVS tree fails to build on an x86-based
GNU/Linux with the following error

[...]
make[3]: Entering directory `/home/gdr/src/axiom/src/clef'
3 making /home/gdr/src/axiom/obj/linux/clef/edible.o from 
/home/gdr/src/axiom/obj/linux/clef/edible.c
edible.c: In function `main':
edible.c:276: error: storage size of `ptermio' isn't known
edible.c:276: warning: unused variable `ptermio'
make[3]: *** [/home/gdr/src/axiom/obj/linux/clef/edible.o] Error 1
make[3]: Leaving directory `/home/gdr/src/axiom/src/clef'
make[2]: *** [clefdir] Error 2
make[2]: Leaving directory `/home/gdr/src/axiom/src'
make[1]: *** [srcdir] Error 2
make[1]: Leaving directory `/home/gdr/src/axiom'
make: *** [all] Error 2

GCC is 3.3.1.

Is this a known issue?





ou2tr@email.com --unknown, Wed, 21 Jun 2006 10:29:44 -0500

Status: open => not reproducible 




property change --Bill Page, Wed, 12 Jul 2006 18:12:45 -0500

Status: not reproducible => closed 




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