how to build multi arch libstdc++

Jonathan Wakely
Sat Sep 7 08:52:00 GMT 2013

On 7 September 2013 05:11, Zhang hw wrote:
> Hello , everybody!
> I have compiled and installed a gcc-4.8.1 with configure
> --build=x86_64-redhat-linux-gnu.There is a app need 32bit libstdc++
> now , but there is nothing in "lib" directory , how to build and
> install it?

x86_64-*-linux-gnu always builds a multilib compiler unless you use

> I have compiled with xxx/libstdc++-v3/configure
> --target=i686-redhat-linux-gnu and returned success , but after
> installed it , I've got only the libraries in directory "lib64" ,
> there was nothing in "lib" directory?

That doesn't make sense, i686-*-linux-gnu is a 32-bit non-multilib target.

> Can I compile and install a 32bit libstdc++ with parameters changing
> for configure and make install? Or , shall I build a cross compiler
> first?

As I said, just build on x86_64 without --disable-multilib

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