RE: Exception Handling switch gives linking problems

RE: Exception Handling switch gives linking problems

[nirav.dalal]

Thanks Danny,

That just worked for me :))

- Nirav



                                                                                                                            
                      Danny Smith                                                                                           
                      <dannysmith@clea         To:      gcc-help@gcc.gnu.org                                                
                      r.net.nz>                cc:      nirav.dalal@teradyne.com                                            
                                               Subject: RE: Exception Handling switch gives linking problems                
                      03/08/2004 09:04                                                                                      
                      PM                                                                                                    
                      Please respond                                                                                        
                      to Danny Smith                                                                                        
                                                                                                                            
                                                                                                                            




From: nirav dot dalal at teradyne dot com

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

> Hi,
>
> I'm having issues with GCC compiling & linking when I remove "
> -fno-exceptions"
> switches/option with x86 target.
>
> For example:
>
> Case A] This example works fine.
> >gcc -mdll -DBUILD_DLL -O3 -c -fno-exceptions foo.cpp
> >dllwrap --dllname=foo.dll foo.o
>
> Case B] This example compiles OK, but does NOT link.
> >gcc -mdll -DBUILD_DLL -O3 -c foo.cpp
> >dllwrap --dllname=foo.dll foo.o
>
> The "dllwrap" command gives me following error/s:
> foo.o(.text+0x28):foo.cpp: undefined reference to
`__gxx_personality_sj0'

< snip >

Tell dllwrap to link in libstdc++ by setting language to C++:

dllwrap --driver-name c++  --dllname=foo.dll foo.o


Better yet, use g++ -shared, instead of dllwrap,   to build the dll

g++  -DBUILD_DLL -O3 -c foo.cpp
g++ -shared -o foo.dll foo.o


Danny

RE: Exception Handling switch gives linking problems

[Danny Smith]

From: nirav dot dalal at teradyne dot com

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

> Hi,
>
> I'm having issues with GCC compiling & linking when I remove "
> -fno-exceptions"
> switches/option with x86 target.
>
> For example:
>
> Case A] This example works fine.
> >gcc -mdll -DBUILD_DLL -O3 -c -fno-exceptions foo.cpp
> >dllwrap --dllname=foo.dll foo.o
>
> Case B] This example compiles OK, but does NOT link.
> >gcc -mdll -DBUILD_DLL -O3 -c foo.cpp
> >dllwrap --dllname=foo.dll foo.o
>
> The "dllwrap" command gives me following error/s:
> foo.o(.text+0x28):foo.cpp: undefined reference to
`__gxx_personality_sj0'

< snip >

Tell dllwrap to link in libstdc++ by setting language to C++:

dllwrap --driver-name c++  --dllname=foo.dll foo.o


Better yet, use g++ -shared, instead of dllwrap,   to build the dll

g++  -DBUILD_DLL -O3 -c foo.cpp
g++ -shared -o foo.dll foo.o


Danny

Exception Handling switch gives linking problems

[nirav.dalal]

Hi,

I'm having issues with GCC compiling & linking when I remove "
-fno-exceptions"
switches/option with x86 target.

For example:

Case A] This example works fine.
>gcc -mdll -DBUILD_DLL -O3 -c -fno-exceptions foo.cpp
>dllwrap --dllname=foo.dll foo.o

Case B] This example compiles OK, but does NOT link.
>gcc -mdll -DBUILD_DLL -O3 -c foo.cpp
>dllwrap --dllname=foo.dll foo.o

The "dllwrap" command gives me following error/s:
foo.o(.text+0x28):foo.cpp: undefined reference to `__gxx_personality_sj0'
foo.o(.text+0x24a):foo.cpp: undefined reference to `__gxx_personality_sj0'
foo.o(.text+0x632):foo.cpp: undefined reference to `__gxx_personality_sj0'
dllwrap: gcc exited with status 1

So if I want to remove "-fno-exceptions" or in other words enable exception
handling in GCC, the link command does NOT like it. How else can we enable
exception handling?

Any help on this problem is appreicated.

The GCC version I'm using is:
>gcc --version
gcc (GCC) 3.3.1 (mingw special 20030804-1)
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Thanks,
- Nirav