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Re: glibc's use of gnu_indirect_function feature - is it backwardscompatible?
On 8/15/2011 8:10 PM, Bryan Ischo wrote:
> Thank you for sticking with this topic and continuing to offer
> advice. You are absolutely right; I learned after thinking that I
> had succeeded that any program that I attempted to run that was
> linked with/against my new gcc/glibc/binutils toolchain required
> using the dynamic loader built as part of that toolchain.
>
> As an alternative to requiring the upgrade of the loader to use the
> new toolchain, I am exploring just statically linking the toolchain
> so that running the toolchain does not require a new loader. A side
> benefit is that the toochain should be easily relocatable, if my
> understanding of the search paths involved is correct.
>
> Of course anything built using the toolchain will require the new
> loader but since the environment in which the cross-compiled programs
> will be run is easily upgraded to the new loader, this should be
> easy.
I would personally avoid linking statically.
Install the new libraries to /opt/sysroot/, and build your applications
with -Wl,--dynamic-linker=/opt/sysroot/lib/ld.so.1 and the appropriate
-Wl,-rpath=....
Cheers,
Carlos.