Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Dr. Armin Tschammer]

Hi,
Now I succeded in compiling and installing the gcc 2.95.1 on a hpux
10.20 box.
I would like to create shared libraries and I did the following:


                  g++ -fpic  -c a.C
                  g++ -fpic  -c  b.C
                  g++ -shared  a.o b.o -o x.sl

  I got the following message:

/usr/ccs/bin/ld: DP relative code in file /var/tmp/cc2TTYoc.o - shared
library must be position
    independent.  Use +z or +Z to recompile.
collect2: ld returned 1 exit status


Any hints ??

Thanks

      Armin

Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Dr. Armin Tschammer]

Hi,
Now I succeded in compiling and installing the gcc 2.95.1 on a hpux
10.20 box.
I would like to create shared libraries and I did the following:


                  g++ -fpic  -c a.C
                  g++ -fpic  -c  b.C
                  g++ -shared  a.o b.o -o x.sl

  I got the following message:

/usr/ccs/bin/ld: DP relative code in file /var/tmp/cc2TTYoc.o - shared
library must be position
    independent.  Use +z or +Z to recompile.
collect2: ld returned 1 exit status


Any hints ??

Thanks

      Armin

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[jd_wells]

I am currently experiencing the exact same
problem.  Did you ever find out what the problem
is?

Any help would be appreciated...
JD Wells


In article
<38183EF6.39D5007F@oi42.kwu.siemens.de>,
  "Dr. Armin Tschammer"
<tscha00a@oi42.kwu.siemens.de> wrote:
> Hi,
> Now I succeded in compiling and installing the
gcc 2.95.1 on a hpux
> 10.20 box.
> I would like to create shared libraries and I
did the following:
>
>                   g++ -fpic  -c a.C
>                   g++ -fpic  -c  b.C
>                   g++ -shared  a.o b.o -o x.sl
>
>   I got the following message:
>
> /usr/ccs/bin/ld: DP relative code in
file /var/tmp/cc2TTYoc.o - shared
> library must be position
>     independent.  Use +z or +Z to recompile.
> collect2: ld returned 1 exit status
>
> Any hints ??
>
> Thanks
>
>       Armin
>
>



Sent via Deja.com http://www.deja.com/
Before you buy.

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[jd_wells]

I am currently experiencing the exact same
problem.  Did you ever find out what the problem
is?

Any help would be appreciated...
JD Wells


In article
< 38183EF6.39D5007F@oi42.kwu.siemens.de >,
  "Dr. Armin Tschammer"
<tscha00a@oi42.kwu.siemens.de> wrote:
> Hi,
> Now I succeded in compiling and installing the
gcc 2.95.1 on a hpux
> 10.20 box.
> I would like to create shared libraries and I
did the following:
>
>                   g++ -fpic  -c a.C
>                   g++ -fpic  -c  b.C
>                   g++ -shared  a.o b.o -o x.sl
>
>   I got the following message:
>
> /usr/ccs/bin/ld: DP relative code in
file /var/tmp/cc2TTYoc.o - shared
> library must be position
>     independent.  Use +z or +Z to recompile.
> collect2: ld returned 1 exit status
>
> Any hints ??
>
> Thanks
>
>       Armin
>
>



Sent via Deja.com http://www.deja.com/
Before you buy.

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Eric Ladner]

Try this instead:

g++ -fpic -c a.C
g++ -fpic -c b.C
ld -b a.o b.o -o x.sl

This works for me.  I've had problems in the past with g(cc/++)'s
-shared
flag on HP-UX.  This makes the linker do it.

Eric

jd_wells@my-deja.com wrote:

> I am currently experiencing the exact same
> problem.  Did you ever find out what the problem
> is?
>
> Any help would be appreciated...
> JD Wells
>
> In article
> <38183EF6.39D5007F@oi42.kwu.siemens.de>,
>   "Dr. Armin Tschammer"
> <tscha00a@oi42.kwu.siemens.de> wrote:
> > Hi,
> > Now I succeded in compiling and installing the
> gcc 2.95.1 on a hpux
> > 10.20 box.
> > I would like to create shared libraries and I
> did the following:
> >
> >                   g++ -fpic  -c a.C
> >                   g++ -fpic  -c  b.C
> >                   g++ -shared  a.o b.o -o x.sl
> >
> >   I got the following message:
> >
> > /usr/ccs/bin/ld: DP relative code in
> file /var/tmp/cc2TTYoc.o - shared
> > library must be position
> >     independent.  Use +z or +Z to recompile.
> > collect2: ld returned 1 exit status
> >
> > Any hints ??
> >
> > Thanks
> >
> >       Armin
> >
> >
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.

--
================================================================
Eric Ladner              | HPUX Systems Admin, Oracle DBA
Pascagoula Refinery      | Java Programmer, Perl scripter, C++
Chevron Products Company | programmer, etc., etc., etc.

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Eric Ladner]

Try this instead:

g++ -fpic -c a.C
g++ -fpic -c b.C
ld -b a.o b.o -o x.sl

This works for me.  I've had problems in the past with g(cc/++)'s
-shared
flag on HP-UX.  This makes the linker do it.

Eric

jd_wells@my-deja.com wrote:

> I am currently experiencing the exact same
> problem.  Did you ever find out what the problem
> is?
>
> Any help would be appreciated...
> JD Wells
>
> In article
> < 38183EF6.39D5007F@oi42.kwu.siemens.de >,
>   "Dr. Armin Tschammer"
> <tscha00a@oi42.kwu.siemens.de> wrote:
> > Hi,
> > Now I succeded in compiling and installing the
> gcc 2.95.1 on a hpux
> > 10.20 box.
> > I would like to create shared libraries and I
> did the following:
> >
> >                   g++ -fpic  -c a.C
> >                   g++ -fpic  -c  b.C
> >                   g++ -shared  a.o b.o -o x.sl
> >
> >   I got the following message:
> >
> > /usr/ccs/bin/ld: DP relative code in
> file /var/tmp/cc2TTYoc.o - shared
> > library must be position
> >     independent.  Use +z or +Z to recompile.
> > collect2: ld returned 1 exit status
> >
> > Any hints ??
> >
> > Thanks
> >
> >       Armin
> >
> >
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.

--
================================================================
Eric Ladner              | HPUX Systems Admin, Oracle DBA
Pascagoula Refinery      | Java Programmer, Perl scripter, C++
Chevron Products Company | programmer, etc., etc., etc.

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Jeffrey A Law]

  In message < 3829CF78.77507FC5@chevron.com >you write:
  > Try this instead:
  > 
  > g++ -fpic -c a.C
  > g++ -fpic -c b.C
  > ld -b a.o b.o -o x.sl
  > 
  > This works for me.  I've had problems in the past with g(cc/++)'s
This is wrong.  Your ctors and dtors in the shared library will not work.

The solution for this problem is in the FAQ.  It's not hard.  The entry
"why can't I build a shared library". 

jeff

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Joerg Faschingbauer]

jd_wells@my-deja.com writes:

> I am currently experiencing the exact same
> problem.  Did you ever find out what the problem
> is?
> 
> Any help would be appreciated...
> JD Wells
> 
> 
> In article
> <38183EF6.39D5007F@oi42.kwu.siemens.de>,
>   "Dr. Armin Tschammer"
> <tscha00a@oi42.kwu.siemens.de> wrote:
> > Hi,
> > Now I succeded in compiling and installing the
> gcc 2.95.1 on a hpux
> > 10.20 box.
> > I would like to create shared libraries and I
> did the following:
> >
> >                   g++ -fpic  -c a.C
> >                   g++ -fpic  -c  b.C
> >                   g++ -shared  a.o b.o -o x.sl
> >
> >   I got the following message:
> >
> > /usr/ccs/bin/ld: DP relative code in
> file /var/tmp/cc2TTYoc.o - shared
> > library must be position
> >     independent.  Use +z or +Z to recompile.
> > collect2: ld returned 1 exit status
> >
> > Any hints ??

A common trap in building shared C++ libs is that gcc itself (and
libstdc++.a) does not bootstrap PICly by default. You have to tell it
to. Configure as usual, and

make bootstrap CFLAGS=-fPIC CXXFLAGS=-fPIC

Also, pass -fPIC (-fpic?) on the link line as well because, when
linking, g++ (collect2) generates code for the ctors of global objects
to be called properly. This code has to be compiled PICly.

I don't know if this cures all of your problems for the HP, but it
sure helps along the way. I once managed to make a HP shared lib with
gcc 2.7.2.3, and ended up with a weird link line that read as follows,
for whatever reason.

g++ -fPIC -shared <the files> -l<library1> ... \
        -Xlinker +I -Xlinker _GLOBAL__DI \
        -u __eprintf -u __pure_virtual -u __builtin_delete \
        -u __builtin_new -u __builtin_vec_delete -u __builtin_vec_new  \
        -u __muldi3 -u __udivdi3 -u __umoddi3 -lgcc \
        the_shared_lib.sl

Joerg

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Joerg Faschingbauer]

jd_wells@my-deja.com writes:

> I am currently experiencing the exact same
> problem.  Did you ever find out what the problem
> is?
> 
> Any help would be appreciated...
> JD Wells
> 
> 
> In article
> < 38183EF6.39D5007F@oi42.kwu.siemens.de >,
>   "Dr. Armin Tschammer"
> <tscha00a@oi42.kwu.siemens.de> wrote:
> > Hi,
> > Now I succeded in compiling and installing the
> gcc 2.95.1 on a hpux
> > 10.20 box.
> > I would like to create shared libraries and I
> did the following:
> >
> >                   g++ -fpic  -c a.C
> >                   g++ -fpic  -c  b.C
> >                   g++ -shared  a.o b.o -o x.sl
> >
> >   I got the following message:
> >
> > /usr/ccs/bin/ld: DP relative code in
> file /var/tmp/cc2TTYoc.o - shared
> > library must be position
> >     independent.  Use +z or +Z to recompile.
> > collect2: ld returned 1 exit status
> >
> > Any hints ??

A common trap in building shared C++ libs is that gcc itself (and
libstdc++.a) does not bootstrap PICly by default. You have to tell it
to. Configure as usual, and

make bootstrap CFLAGS=-fPIC CXXFLAGS=-fPIC

Also, pass -fPIC (-fpic?) on the link line as well because, when
linking, g++ (collect2) generates code for the ctors of global objects
to be called properly. This code has to be compiled PICly.

I don't know if this cures all of your problems for the HP, but it
sure helps along the way. I once managed to make a HP shared lib with
gcc 2.7.2.3, and ended up with a weird link line that read as follows,
for whatever reason.

g++ -fPIC -shared <the files> -l<library1> ... \
        -Xlinker +I -Xlinker _GLOBAL__DI \
        -u __eprintf -u __pure_virtual -u __builtin_delete \
        -u __builtin_new -u __builtin_vec_delete -u __builtin_vec_new  \
        -u __muldi3 -u __udivdi3 -u __umoddi3 -lgcc \
        the_shared_lib.sl

Joerg

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Joerg Faschingbauer]

jd_wells@my-deja.com writes:

> I am currently experiencing the exact same
> problem.  Did you ever find out what the problem
> is?
> 
> Any help would be appreciated...
> JD Wells
> 
> 
> In article
> <38183EF6.39D5007F@oi42.kwu.siemens.de>,
>   "Dr. Armin Tschammer"
> <tscha00a@oi42.kwu.siemens.de> wrote:
> > Hi,
> > Now I succeded in compiling and installing the
> gcc 2.95.1 on a hpux
> > 10.20 box.
> > I would like to create shared libraries and I
> did the following:
> >
> >                   g++ -fpic  -c a.C
> >                   g++ -fpic  -c  b.C
> >                   g++ -shared  a.o b.o -o x.sl
> >
> >   I got the following message:
> >
> > /usr/ccs/bin/ld: DP relative code in
> file /var/tmp/cc2TTYoc.o - shared
> > library must be position
> >     independent.  Use +z or +Z to recompile.
> > collect2: ld returned 1 exit status
> >
> > Any hints ??

A common trap in building shared C++ libs is that gcc itself (and
libstdc++.a) does not bootstrap PICly by default. You have to tell it
to. Configure as usual, and

make bootstrap CFLAGS=-fPIC CXXFLAGS=-fPIC

Also, pass -fPIC (-fpic?) on the link line as well because, when
linking, g++ (collect2) generates code for the ctors of global objects
to be called properly. This code has to be compiled PICly.

I don't know if this cures all of your problems for the HP, but it
sure helps along the way. I once managed to make a HP shared lib with
gcc 2.7.2.3, and ended up with a weird link line that read as follows,
for whatever reason.

g++ -fPIC -shared <the files> -l<library1> ... \
        -Xlinker +I -Xlinker _GLOBAL__DI \
        -u __eprintf -u __pure_virtual -u __builtin_delete \
        -u __builtin_new -u __builtin_vec_delete -u __builtin_vec_new  \
        -u __muldi3 -u __udivdi3 -u __umoddi3 -lgcc \
        the_shared_lib.sl

Joerg

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[jd_wells]

I am currently experiencing the exact same
problem.  Did you ever find out what the problem
is?

Any help would be appreciated...
JD Wells


In article
<38183EF6.39D5007F@oi42.kwu.siemens.de>,
  "Dr. Armin Tschammer"
<tscha00a@oi42.kwu.siemens.de> wrote:
> Hi,
> Now I succeded in compiling and installing the
gcc 2.95.1 on a hpux
> 10.20 box.
> I would like to create shared libraries and I
did the following:
>
>                   g++ -fpic  -c a.C
>                   g++ -fpic  -c  b.C
>                   g++ -shared  a.o b.o -o x.sl
>
>   I got the following message:
>
> /usr/ccs/bin/ld: DP relative code in
file /var/tmp/cc2TTYoc.o - shared
> library must be position
>     independent.  Use +z or +Z to recompile.
> collect2: ld returned 1 exit status
>
> Any hints ??
>
> Thanks
>
>       Armin
>
>



Sent via Deja.com http://www.deja.com/
Before you buy.

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Eric Ladner]

Try this instead:

g++ -fpic -c a.C
g++ -fpic -c b.C
ld -b a.o b.o -o x.sl

This works for me.  I've had problems in the past with g(cc/++)'s
-shared
flag on HP-UX.  This makes the linker do it.

Eric

jd_wells@my-deja.com wrote:

> I am currently experiencing the exact same
> problem.  Did you ever find out what the problem
> is?
>
> Any help would be appreciated...
> JD Wells
>
> In article
> <38183EF6.39D5007F@oi42.kwu.siemens.de>,
>   "Dr. Armin Tschammer"
> <tscha00a@oi42.kwu.siemens.de> wrote:
> > Hi,
> > Now I succeded in compiling and installing the
> gcc 2.95.1 on a hpux
> > 10.20 box.
> > I would like to create shared libraries and I
> did the following:
> >
> >                   g++ -fpic  -c a.C
> >                   g++ -fpic  -c  b.C
> >                   g++ -shared  a.o b.o -o x.sl
> >
> >   I got the following message:
> >
> > /usr/ccs/bin/ld: DP relative code in
> file /var/tmp/cc2TTYoc.o - shared
> > library must be position
> >     independent.  Use +z or +Z to recompile.
> > collect2: ld returned 1 exit status
> >
> > Any hints ??
> >
> > Thanks
> >
> >       Armin
> >
> >
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.

--
================================================================
Eric Ladner              | HPUX Systems Admin, Oracle DBA
Pascagoula Refinery      | Java Programmer, Perl scripter, C++
Chevron Products Company | programmer, etc., etc., etc.

Re: Linking shared libraries on hpux 10.20 with gcc 2.92.1 fails !!

[Jeffrey A Law]

  In message < 3829CF78.77507FC5@chevron.com >you write:
  > Try this instead:
  > 
  > g++ -fpic -c a.C
  > g++ -fpic -c b.C
  > ld -b a.o b.o -o x.sl
  > 
  > This works for me.  I've had problems in the past with g(cc/++)'s
This is wrong.  Your ctors and dtors in the shared library will not work.

The solution for this problem is in the FAQ.  It's not hard.  The entry
"why can't I build a shared library". 

jeff