target/10865: [ia64] gcc -pthread does not add -D_REENTRANT

Tue May 20 08:09:00 GMT 2003

Hello,

[sorry for the direct replay, but I cannot find any "Edit PR" button on 
the page below & on the entire gants/gcc web. Thanks to point me to a 
link, so that I can copy/paste the below in the gnats database].

"-pthread" is documented as an RS6000/PowerPC option only:

<http://gcc.gnu.org/onlinedocs/gcc-3.2.2/gcc/RS-6000-and-PowerPC-Options.html#RS%2f6000%20and%20PowerPC%20Options>

Quoting:

    |-pthread|
        Adds support for multithreading with the pthreads library. This
        option sets flags for both the preprocessor and linker.

However, this option exists for every architectures I worked with 
(HP-UX, Linux, ia32, ia64...). It is even reported as part of the gcc specs:

RedHat 8.0 / i386:

gcc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --host=i386-redhat-linux --with-system-zlib --enable-__cxa_atexit
Thread model: *posix*
gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)

Debian Sarge / ia64:

 gcc-3.2 -v
Reading specs from /usr/lib/gcc-lib/ia64-linux/3.2.3/specs
Configured with: ../src/configure -v --enable-languages=c,c++,java,f77,proto,objc,ada --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.2 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --enable-__cxa_atexit --enable-clocale=gnu --enable-java-gc=boehm --enable-objc-gc ia64-linux
Thread model: *posix*
gcc version 3.2.3 20030309 (Debian prerelease)

So I have always assumed (as it always worked) that the description for 
RS6000/PowerPC was Ok for every supported architecture.

What I can observe in the current GCC I am using is that the linker 
option (-lpthread) is set, but not the pre-compiler option

-- FiX

ljrittle@gcc.gnu.org wrote:

>Synopsis: [ia64] gcc -pthread does not add -D_REENTRANT
>
>State-Changed-From-To: open->feedback
>State-Changed-By: ljrittle
>State-Changed-When: Tue May 20 00:19:36 2003
>State-Changed-Why:
>    [Before responding, I checked the gcc documentation that shipped
>    with both FSF gcc 3.2.2 and FSF gcc 3.3.]
>    
>    Question: To which documentation are you referring?  To my knowledge, there was no documentation shipped with FSF gcc
>    3.2.X or FSF gcc 3.3 which claims that -D_REENTRANT is added
>    when -pthread is present.  It is true that some ports do indeed
>    add it under that condition however I can find no documentation
>    on the matter.
>
>http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10865
>  
>

-- 
Francois-Xavier "FiX" KOWALSKI     /_ __    Tel: +33 (0)4 76 14 63 27
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