RE: Relationship between libstdc++ and libsupc++

["Ramadass, Ramanathan" <Ramanathan dot Ramadass at spirentcom dot com>]

So both the libstdc++ & libsupc++ should be built when i build gcc? In my case no libraries are built maybe because i give the --with-libs option (i am building a cross from i686-pc-linux-gnu to i386-elf) and gmake target as "all-gcc". Other then libgcc no libraries are installed. After building and installing gcc i run gmake with target "all-target-libstdc++-v3" when it fails. The failure happens at;

checking whether the C compiler ( /mnt/home/rramadass/gnu/gccobj/gcc/xgcc -B/mnt/home/rramadass/gnu/gccobj/gcc/ -B/mnt/home/rramadass/gnu/gcc/i386-elf/bin/ -B/mnt/home/rramadass/gnu/gcc/i386-elf/lib/ -isystem /mnt/home/rramadass/gnu/gcc/i386-elf/include -O2 -g -O2 ) works... no
configure: error: installation or configuration problem: C compiler cannot create executables.
gmake: *** [configure-target-libiberty] Error 1

"all-target-libstdc++=v3" depends on "all-target-libiberty" which is dependant on "configure-target-libiberty". So how can i build libstdc++? Also since i need only libsupc++ is there a simple way to bypass all these and build libsupc++ only?

Thanks
Ram

-----Original Message-----
From: Phil Edwards [mailto:phil@jaj.com]
Sent: Wednesday, November 12, 2003 3:04 PM
To: Ramadass, Ramanathan
Cc: libstdc++@gcc.gnu.org
Subject: Re: Relationship between libstdc++ and libsupc++


On Wed, Nov 12, 2003 at 12:27:58PM -0800, Ramadass, Ramanathan wrote:
> Hi,
> 
> I have a few newbie questions. 
> 
> 1. For my project i am replacing libstdc++ with a 3rd party standard C++
> library. As i understand the language support routines in libstdc++ have
> been collected into libsupc++. Is this correct? Can i assume there is no
> compiler/language specific magic in libstdc++?

For the most part, this is correct.


> 2. For my tests i want to build gcc 3.3.2, libstdc++ and libsupc++(for
> --target=i386-elf). While i have built gcc, the instructions for building
> libstdc++ are somewhat confusing to me. The gcc tar ball contains a
> subdirectory named libstdc++. Am i to build this directory? The libstdc++
> installation page says i am to delete this and replace it with the
> separate libstdc++ tar ball that i can obtain from ftp.gnu.org (latest i
> can see libstdc++.2.90.8.tar.gz). However a README in that directory says
> one should use the libstdc++ that is packaged with gcc tar ball(from 3.0
> onwards). How do i proceed? Also do i need to configure gcc and libstdc++
> with their respective configure scripts separately(since libstdc++ is
> contained under gcc)?

Those instructions are for the old v2.  The source directory is named
libstdc++-v3.  The old directory was named libstdc++, and it should not
be included in 3.x releases.

The library in libstdc++-v3 will be built and configured along with gcc,
at the same time and using the same options.

-- 
Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it.
    - Brian W. Kernighan