r8518 - in trunk/BOOK: . chapter01 prologue

[Sukucorp Sukucorp]

On Fri, Apr 11, 2008 at 4:30 PM, Dan Nicholson <dbn.lists at gmail.com> wrote:
>
>  yacc (bison) - Definitely needed since we patch the bash parse.y file
>  in Ch. 5 and yacc will need to be rerun. Could add bison to Ch. 5
>  before bash, but IMO it's easier for the host to just install bison.

I don't remember if bash calls bison or yacc. If it is the former, we
don't need to check yacc -> bison symlink.

>  awk - Definitely needed by the glibc build, and gawk in particular due
>  to use of some non-portable features.

glibc needs gawk but it doesn't need awk -> symlink.

>  bash - Not needed for actual building, but glibc's ldd and tzselect
>  need either bash or ksh to work. The values will be substituted at
>  configure time. I don't know what happens without them, and it's
>  probably not that important in Ch. 5 if those utilities aren't there.
>  However, we create the LFS user with /bin/bash as the login shell, and
>  this can't be substituted as is because we set up the environment
>  through the bash initialization files.

Ditto. bash has to be installed but need not be the default shell.

Randy echoed my thoughts in a much better manner. We should not check
for something if the result of the check does not make any difference
in the build.

-- 
Tushar Teredesai
 mailto:tushar at linuxfromscratch.org
 http://www.linuxfromscratch.org/~tushar/