Morning Everyone:
I've been playing around with rebuilding RPMS for the past 2 weeks. Some
have gone smoothly, with absolutely no warnings, errors, etc. I'm trying
to optimize these and compile them as i686 instead of i386 binaries. The
steps I've done so far are this:
1) Gone into the file /usr/lib/rpm/rpmrc and modified the line:
optflags: i386 -O2 -m486 -fno-strength-reduce
with:
optflags: -O3 -mpentiumpro -DCPU=i686 -fno-strength-reduce
-fexpensive-optimizations -ffast-math -funroll-loops
-fomit-frame-pointer
This is all on one line, btw. Just broken up here for clarity.
2) Downloaded the srpms for all of the packages in the 6.1
distribution.
3) Doing one at a time, I install the source by doing:
rpm -i filename-version.src.rpm
4) Then, in the /usr/src/redhat/SPECS directory I type:
rpm -ba --target i686 filename.spec
Now, like I said, some of these build just fine. I see all of the
messages scroll past, and that it's compiling this file or that, and then
at the end, I will usually see something like this (this happened to be
on a rebuild of dhcp I was doing):
Finding Provides: (using /usr/lib/rpm/find-provides)...
Finding Requires: (using /usr/lib/rpm/find-requires)...
PreReq: /bin/sh
Requires: ld-linux.so.2 libc.so.6 /bin/sh
libc.so.6(GLIBC_2.0) libc.so.6(GLIBC_2.1)
Obsoletes: dhcpd
Wrote: /usr/src/redhat/SRPMS/dhcp-2.0-3.src.rpm
Wrote: /usr/src/redhat/RPMS/i686/dhcp-2.0-3.i686.rpm
Executing: %clean
+ umask 022
+ cd /usr/src/redhat/BUILD
+ cd dhcp-2.0
+ rm -rf /var/tmp/dhcp-root
+ exit 0
Sure enough, if I go into /usr/src/redhat/RPMS/i686, the new binary is
there. If I get to this point, can I assume that the binary rebuilt
properly, or is there something else that I need to check. Secondly, is
this package really optimized, or do I need to do something to the .tar.gz
source code to really optimize it, IE. use pmake or egcs?
In other instances, I have gotten a message that says something similare
to this when I try to rebuild:
# rpm -ba --target i686 filename.spec
Building target platforms: i686
Building for target i686
Architecture is not included: i686
#
What I've done in this case is go into the spec file, and change the line
that says:
ExclusiveArch: i386 sparc sparc64
to:
ExclusiveArch: i386 i486 i586 i686 sparc sparc64
In most cases, this allows it to rebuild fine.
However, I've run into about 15 RPMS so far that I haven't been able to
rebuild. Take anonftp for one. Here is what the whole output from
the rebuild process shows:
/usr/src/redhat/SPECS: rpm -ba --target i686 anonftp.spec
Building target platforms: i686
Building for target i686
Executing: %prep
+ umask 022
+ cd /usr/src/redhat/BUILD
+ rm -rf /var/tmp/anonftp-root
+ exit 0
Executing: %install
+ umask 022
+ cd /usr/src/redhat/BUILD
+ rm -rf /var/tmp/anonftp-root
+ mkdir -p /var/tmp/anonftp-root/home/ftp
+ mkdir -p /var/tmp/anonftp-root/home/ftp/pub
+ mkdir -p /var/tmp/anonftp-root/home/ftp/etc
+ mkdir -p /var/tmp/anonftp-root/home/ftp/bin
+ mkdir -p /var/tmp/anonftp-root/home/ftp/lib
+ cat
+ cat
+ cp -fd /etc/ld.so.cache /var/tmp/anonftp-root/home/ftp/etc
+ cp -fd /lib/libc.so.6.1 /lib/libc-2.1.1.so
/var/tmp/anonftp-root/home/ftp/lib
cp: /lib/libc.so.6.1: No such file or directory
cp: /lib/libc-2.1.1.so: No such file or directory
Bad exit status from /var/tmp/rpm-tmp.77624 (%install)
Am I incorrect in assuming that if I have every package installed on my
machine from a CD based 6.1 distribution, all libraries, everything, that
I should be able to rebuild packages just like Red Hat builds them? Does
Red Hat have some different machine set up with extra libraries on that
they build all of these packages on? In the previous example, I see the
two lines at then end that say those files (libraries I'm assuming) can't
be copied, and sure enough, they aren't there. So if Red Hat is using
what I am, why would it build for them and not the end user?
Anyone who has experience in building these packages, I would really be
interested in setting up a friendship with and discussing more about this
topic. I've bought the book Maximum RPM, and understand some of what is
going on. I'd really like to rebuild my 6.1 distribution with .i686
binaries instead of the standard .i386. I know Mandrake uses .i586, but
when asking around, haven't run into a lot of people who are using it.
Thanks.
- Mike
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