[ijbswa-devel] [ ijbswa-Bugs-445105 ] Solaris 2.6: -D_REENTRANT=1 required

[<no...@so...>]

Bugs item #445105, was opened at 2001-07-27 03:06
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Category: unix-specific
Group: version 2.9.x
>Status: Open
Resolution: Fixed
Priority: 5
Submitted By: Paul Lieverse (lieverse)
Assigned to: Jon Foster (jongfoster)
Summary: Solaris 2.6: -D_REENTRANT=1 required

Initial Comment:
On Solaris 2.6/SunOS 5.6 compilation requires
-D_REENTRANT=1 in addition to the other Solaris
specific flags, to make sure that errno is a function
instead of a plain integer. (Which causes problems
beccause of the multithreading. In particular, no
connection can be established).


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>Comment By: Paul Lieverse (lieverse)
Date: 2001-07-31 10:21

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Tested, and works with gcc. 
(Not tested with native compiler. This requires some more
changes,
e.g., LD is now set to gcc in Makefile.in.)

Thanks!
Paul

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Comment By: Jon Foster (jongfoster)
Date: 2001-07-30 15:24

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Fixed, I hope.  Please can you test it?

> I cannot find any doc on the -pthread flag
I read about it in a newsgroup posting - apparently it 
makes the Linux system libraries thread-safe, and does "-
lpthread".

Thanks!

Jon

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Comment By: Paul Lieverse (lieverse)
Date: 2001-07-30 11:02

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Another followup on this:
The Solaris gcc equivalent of -pthread is -pthreads (note
the s at the end)
This flags also defines _REENTRANT, thereby making that
define in
config.h no longer needed. It also takes care of linking in
-lpthread.



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Comment By: Paul Lieverse (lieverse)
Date: 2001-07-29 12:23

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The flag works ok, but the checking in configure.in doesn't.

$target is only used for cross-compilation, and is only set
with
AC_CANONICAL_SYSTEM. 

AC_CANONICAL_HOST only sets $host, $host_cpu, $host_vendor,
and
$host_os. The 'case "$target" in' should thus be changed
to 'case "$host" in'. I tried this and seems to work fine.

Another thing: gcc (2.95.2) on Solaris doesn't know about
the -pthread flag. It still compiles, only puts a message on
the screen.
(I cannot find any doc on this flag on linux either, but it
doesn't
complain).



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Comment By: Jon Foster (jongfoster)
Date: 2001-07-29 10:47

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Done, now in CVS.  

Andreas, sorry for doing a job which wasn't assigned to me -
 but I've been working on ./configure in order to fix some 
other bugs, and it was easy to fix this at the same time.  
Besides, I didn't think you'd mind <g>.

Paul (or any other volunteer), I haven't got Solaris at 
home to test, so could you please see if the fix works?

Thanks,

Jon

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