Re: Fixincludes

[Jeremy Huntwork <jhuntwork at lightcubesolutions dot com>]

On 6/2/12 5:34 PM, Eric Botcazou wrote:
> What are you after, exactly?  Even on modern OSes, there might be glitches or
> small incompatibilities that woud need to be fixed in order for GCC to work
> properly, and fixincludes is the tried and proven tool to do that.  It is
> designed to modify only what needs to be modified, but bugs cannot of course
> be ruled out like in any other piece of code.

There have been discussions about the need (or lack of) for this script 
to run on the Linux From Scratch development list. In LFS gcc is 
bootstrapped in a very confined chroot environment where the only 
headers available are the Linux headers and those from glibc. What is in 
question is whether it is better in our very minimal build environment 
to let the script run or disable it.

Up until very recently it was disabled, in part because we wanted to 
ensure that nothing from the original host system leaked into the chroot 
system. But given that we have limited the ability of the host system to 
leak in via other means (i.e., sysroot and our 3 stage build) recently 
we removed the command that disabled it.

After reading up further, it appears that the possibility exists that 
the script may 'fix' things in the libc headers that we don't want or 
need 'fixed'. I'm trying to ascertain what things the script in 
particular is 'fixing' and which way is more technically sound in our 
build scenario.

Thanks again,

JH