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RE: GCC Compatibility in C++

From: Andrew Haley <aph-gcc at littlepinkcloud dot COM>
To: "Shlomit Morad" <Shlomit at orbotech dot com>
Cc: <gcc-help at gcc dot gnu dot org>
Date: Wed, 30 May 2007 10:42:29 +0100
Subject: RE: GCC Compatibility in C++
References: <0E2C5F56E2BD564FB72AAEE7EC21BA5101FC0129@EXCG-ISL02.orbotech.org>

Shlomit Morad writes:
 > 
 > Orbotech is using GCC for C++ version 3.4.3 on Fedora 5
 > We want to move to GCC version 4.1.1 on Fedora 6 or Centos
 >  
 > I looked for any binary compatible statement between 3.x and 4.y but I
 > didn't find any.
 > A found some Q&A that are somewhat ambiguous 
 >  
 > Can you direct me to (or send me) a formal statement ?

The issue here is the C++ library.  The compilers should generate
binary-compatible code, but the programs will probably be linked
against different C++ libraries.

Have a look at /usr/lib/libstdc++.so on your old system: it's a
symbolic link to a library with a version name.  Now have a look at
/usr/lib/libstdc++.so on the new system.

Andrew.

References:
- RE: GCC Compatibility in C++
  - From: Shlomit Morad

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