%-> Hi,
%->
%-> I want to compile an optimal RH installation
%-> for my system by compiling the source rpms
%-> for RH 6.2 on my 6.1 system and upgrading
%-> the system using these newly compiled
%-> rpms.
%-> Can anyone tell me what the command is
%-> to compile a SRPM so that i end up with
%-> a rpm-file ready for installation?
%->
%-> Thanks,
%-> J.
Are you after a Pentium III or similar optimised installation? It's tempting
to reply to this in OpenBSD style with 'man rpm', but I'll do some
copy-and-paste from that man page as well ;-)
BUILD OPTIONS
The general form of an rpm build command is
rpm -[b|t]O [build-options] <package_spec>+
The argument used is -b if a spec file is being used to
build the package and -t if RPM should look inside of a
gzipped (or compressed) tar file for the spec file to use.
After the first argument, the next argument (O) specifies
the stages of building and packaging to be done and is one
of:
-bp Executes the "%prep" stage from the spec file.
Normally this involves unpacking the sources and
applying any patches.
-bl Do a "list check". The "%files" section from the
spec file is macro expanded, and checks are made to
verify that each file exists.
-bc Do the "%build" stage from the spec file (after
doing the prep stage). This generally involves the
equivalent of a "make".
-bi Do the "%install" stage from the spec file (after
doing the prep and build stages). This generally
involves the equivalent of a "make install".
-bb Build a binary package (after doing the prep,
build, and install stages).
-bs
equivalent of a "make".
-bi Do the "%install" stage from the spec file (after
doing the prep and build stages). This generally
involves the equivalent of a "make install".
-bb Build a binary package (after doing the prep,
build, and install stages).
-bs Build just the source package (after doing the
prep, build, and install stages).
--timecheck
Set the "timecheck" age (0 to disable). This value
can also be configured by defining the macro
"_timecheck". The timecheck value expresses, in
seconds, the maximum age of a file being packaged.
Warnings will be printed for all files beyond the
timecheck age.
--clean
Remove the build tree after the packages are made.
--rmsource
Remove the sources and spec file after the build
(may also be used standalone, eg. "rpm --rmsource
foo.spec").
--test Do not execute any build stages. Useful for test-
ing out spec files.
--sign Embed a PGP signature in the package. This signa-
ture can be used to verify the integrity and the
origin of the package. See the section on PGP SIG-
NATURES for configuration details.
--buildroot <dir>
When building the package, override the BuildRoot
tag with directory <dir>.
--target <platform>
When building the package, interpret <platform> as
arch-vendor-os and set the macros _target, _tar-
get_arch and _target_os accordingly.
--buildarch <arch>
When building the package, set the architecture to
<arch>. This option has been obsoleted by --target
in RPM 3.0.
--buildos <os>
When building the package, set the architecture to
<os>. This option has been obsoleted by --target in
RPM 3.0.
REBUILD AND RECOMPILE OPTIONS
There are two other ways to invoke building with rpm:
rpm --recompile <source_package_file>+
rpm --rebuild <source_package_file>+
When invoked this way, rpm installs the named source pack-
age, and does a prep, compile and install. In addition,
--rebuild builds a new binary package. When the build has
completed, the build directory is removed (as in --clean)
and the the sources and spec file for the package are
removed.
Having perused the above, you need to do to do two things:
1. Install GCC 2.95.2 (search rpmfind.net for it, or get the tarball from
http://gcc.gnu.org/ . GCC 2.95.2 is able to produce Pentium III-optimised
binaries, unlike the older version of GCC that ships with RH6.1 (AFAIK).
2. Edit /usr/lib/rpm/rpmrc and add e.g:
optflags:
i386 -O6 -mpentiumpro -march=i686 -ffastmath -fstrict-aliasing -fexpensive-o
ptimizations -fomit-frame-pointer -fno-strength-reduce
These work well for me.
Not everything will compile OK, so expect to spend many an hour trying to
figure out why... ;-)
I've succesfully recompiled the 2.2.14 kernel, glibc, xf86 4.0 and KDE with
the above tweaks. Faster? Well... perhaps a bit.
Cheers,
-- Juha
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
