Re: [Boost-users] boost1.33.0 on IA64 thread problem

From: Andreas Unterkircher (unterkir_at_[hidden])
Date: 2005-11-09 05:07:36

Hello Ben,

thank you very much for your response. I tried adding "-D_REENTRANT" and 
it works fine. Please let me ask some follow up questions for 
clarification:

On IA32/gcc3.2.3 I tried to compile the below test code both with 
boost_1_32_0 and boost_1_33_0. The compile comand is constructed by the 
build system of the project I'm porting but I can influence it by an .m4 
file. In both cases it works by using just "-pthread" and it also works  
with "-pthread -D_REENTRANT". What is the difference between these two (if 
any) ? 
On IA64/gcc3.2.3 it works only with "-pthread -D_REENTRANT" (having 
applied your patch). What is the reason for this difference between IA32 
and IA64 ? Is it a "bug" ?
With a few towards building on IA32 and IA64 using the same Makefile could 
I just change "-pthread" to "-pthread -D_REENTRANT" and this would produce 
the same binaries on IA32 as "-pthread" for boost_1_32_0 as well as for 
boost_1_33_0 ?

Thank you very much for your efforts !

Best regards,
Andreas

On Tue, 8 Nov 2005, Ben Hutchings wrote:

> Andreas Unterkircher wrote:
> 
> >I'm working on porting a large project to IA64. Therefore I'd like to 
> >use the boost thread package on IA64 using gcc 3.2.3 (standard compiler 
> >on the SL 3 Linux distribution).
> >
> For reference, I used Debian 3.1 (sarge) with g++ 3.3.5 and Boost from 
> CVS shortly before 1.33.
> 
> <snip>
> 
> >In the boost mailing list archive I found an IA64 patch posted by Ben 
> >Hutchings. Applying this patch and recompiling boost I get:
> >
> >g++ -g -O2 -pthread
> >-I/opt/boostTest/include/boost-1_33
> >-L/opt/boostTest/lib
> >-lboost_filesystem-gcc-mt -lboost_thread-gcc-mt -lpthread
> >-lboost_regex-gcc-mt prog.c
> >  
> >
> The patch is supposed to add a -D_REENTRANT to that. Are you 
> constructing this command-line yourself?
> 
> >In file included from 
> >/opt/boostTest/include/boost-1_33/boost/thread/detail/config.hpp:18,
> >                 from 
> >/opt/boostTest/include/boost-1_33/boost/thread/mutex.hpp:15,
> >                 from prog.c:2:
> >/opt/boostTest/include/boost-1_33/boost/config/requires_threads.hpp:47:5: 
> >#error "Compiler threading support is not turned on. Please set the 
> >correct command line options for threading: -pthread (Linux), -pthreads 
> >(Solaris) or -mthreads (Mingw32)"
> >
> >But when I use "-DBOOST_HAS_THREADS" everything works fine:
> >
> >g++ -g -O2 -pthread -DBOOST_HAS_THREADS
> >-I/op/boostTest/include/boost-1_33
> >-L/opt/boostTest/lib
> >-lboost_filesystem-gcc-mt -lboost_thread-gcc-mt -lpthread
> >-lboost_regex-gcc-mt prog.c
> >  
> >
> <snip>
> 
> >Here are my questions:
> >
> >Boost 1.33.0 contains the file boost/detail/sp_counted_base_gcc_ia64.hpp, 
> >nevertheless thread support seems not to work with gcc3.2.3. Thread 
> >support works by applying the patch and using "-DBOOST_HAS_THREADS". What 
> >is the status of boost 1.33.0 concerning IA64 ? I guess the patch has not 
> >been incorporated into the boost distribution ?
> >  
> >
> Sorry, no, I seem to have missed committing the change to gcc-tools.jam. 
> Since I don't normally develop on IA64 this error wasn't obvious to me 
> until now.
> 
> >On IA32 I can compile and use boost 1.33.0 threads using gcc3.2.3 without 
> >using "-DBOOST_HAS_THREADS". Why is this the case ?
> >
> You're telling Boost that the compiler has been configured to use 
> thread-safe options (which unfortunately is not true if _REENTRANT is 
> not defined).
> 
> >Ideally I would like to use the same compiler flags to compile a project using boost on IA32 and IA64.
> >  
> >
> You can use the options -pthread -D_REENTRANT on both.
> 
> Ben.
> 
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