Building without bootstrapping

[Kai Ruottu]

Paul Brook wrote:
>> How can I get the build scripts to use the precompiled gcc throughout
>> the build process ?
>>     
>
> Short answer is you can't. The newly build gcc is always used to build the 
> target libraries.
>   
 Nice statement but what does this really mean?

 Does this for instance mean that: "The newly build gcc is always used 
to build the
target C libraries ?  A native GCC builder now expecting those 
'/usr/lib/*crt*.o'
startups, '/lib/libc.so.6', '/lib/ld-linux.so.2', '/usr/libc.a' etc. 
"target libraries" being
rebuilt with the new "better" GCC  to be "smaller and quicker" ?

 Even some fanatic "people should always rebuild the target C library 
from its
pristine (FSF) sources"-guys have publicly given statements like "nobody 
should
consider replacing the native runtime target libraries with something 
built oneself!".
So maybe in a native GCC build it is not expected that people really 
would rebuild
"the target libraries" with the new GCC...

 Meanwhile with a crosscompiler this thing seems to be totally on the 
contrary, even
in cases where the target C library with those runtime libraries exists, 
still everyone
should replace it with a self-made C library.  Nowadays there even 
aren't any
instructions available for producing a crosscompiler with an existing 
target C library!