g++ symbol problem in Red Hat Linux 8.0

[zakaria kojo <zakaria_kojo at yahoo dot com>]

I am having problems in Red Hat Linux 8.0 in building
shared files. Could someone help.

I never face the same problem with Red Hat Linux 7.3
Below are the details of the problem.

Zakaria Aygula


[shell]$ g++ -v
Reading specs from
/usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr
--mandir=/usr/share/man --infodir=/u
sr/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)

[shell]$g++  sum_array.cc -c

Where sum_array.cc is the code below.

sum_array.cc
//#######################################
float sum_array(int argc, void  *argv[])
{
  float *fp, s=0.0; int n;
  for( n= *(int *)argv[1], fp=(float *)argv[0]; n--;)
    s += *fp++;
  return (s);
}
//##########################################

now the shared file is

[shell]$g++ -shared -o  example.so sum_array.o

[shell]$ nm example.so
................................
................................
00000514 T _init
000017bc d __JCR_END__
000017bc d __JCR_LIST__
         w _Jv_RegisterClasses
000016cc d p.0
00000628 T _Z9sum_arrayiPPv <=======  Here is the
diference with Red Hat 7.3 g++ compiler, and the
shared file does not execute in Red Hat 8.0.

The last symbol is different from Red Hat Linux 7.3 as
shown below.
 [shell]$g++ -v
Reading specs from
/usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-110)


Which gives

00000680 t gcc2_compiled.
00000670 t init_dummy
00000710 t init_dummy
00001858 b object.2
00001744 d p.0
00000680 T sum_array__FiPPv <=======  Here is the
difference with Red Hat Linux 8.0 g++ compiler

And it is the correct one. Can someone out there help
how to compile corectly on Red Hat Linux 8.0






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