Yet another how do I build an SRPM thread...

Okay, I can use rpmbuild --help ... and I'm fairly confident that I can figure out how to unpack an SRPM, or simply build straight from one. What I can't seem to locate is a clear reference that explains all the options for rpmmacros or rpmrc files. I want to play around with rebuilding Fedora from source using very specific optimizations (I have to use the i686 variant on a Phenom II X4 because x86_64 doesn't work with some Wine stuff I want to run) so I at least want to squeeze whatever I can out of it.... That, and it's fun for me.

So, if it's easier for someone to answer: What file(s) would I modify to force a specific set of CFLAGS and CXXFLAGS on the rpmbuild process or where can I find documentation that would explain it to me (at least somewhat clearly, like, with examples..)?

Another question... assuming I get the packages that I want built I will probably just rebuild my entire local mirror worth of SRPMs. These would be called something like <package>-<version>.tei.i686. How would I go about making yum prefer those versions over versions offered by other repos? So if I were to use 'su -c yum install foo', how would I insure that it uses foo-1.1.tei.i686.rpm instead of foo-1.1.i686.rpm assuming both are available in visible repositories? Would I just have to disable all the other repos or what?

Versions : Example grub-0.97-66.fc14.src.rpm : 0.97 is the "major" version number.
66 is "minor" = build version. "66" can be changed in the file 'grub.spec',
thus indicating a later build : The command 'rpm -Uvh <package', that yum uses,
should the upgrade the package.
Say you are using 'minor's starting with 500, no Fedora package would ever
come close to that with a later build number.

About CFLAGS : Please look into the spec file. Example, a random grub :

CFLAGS="-Os -g -fno-strict-aliasing -Wall -Werror -Wno-shadow"
if [ "$GCCVERS" == "4" ]; then
	CFLAGS="$CFLAGS -Wno-pointer-sign"
fi
%ifarch x86_64
CFLAGS="$CFLAGS -static" 
%endif
export CFLAGS
%configure --sbindir=/sbin --disable-auto-linux-mem-opt
make

And the rpm account : "Setting up an unpreviledged rpmbuild account in /home/<name>/":
http://www.linuxquestions.org/questi...1-a-766486/#13
→ post # 13.

Sorry if this seems obvious, but it is where I picked up most of my rpm knowledge. For more in depth documentation on rpm, I would take a look at the links on www.rpm.org. I found the Maximum RPM and Fedora RPM Guide most helpful. They also have a community of users using their mailing lists and you might even try the irc channel.

What you will probably end up doing with yum is building a local repository and then creating a repo file for it. There are then two options for determining which repository takes preference. You could enable or disable the ones you want and don't want. Another option is a package called yum-priorities.