[Rpm-maint] Fwd: Looking for documentation on rpm macros and some suggestions

[Ritesh Sood]

I had sent the following mail to rpm-list at lists.rpm.org, but haven't  
received a response. Perhaps rpm-maint is a more appropriate forum for  
my queries.

> Hi all,
>
> I'm not a regular rpm builder, but have the need to build some at  
> the moment. I've been successful in building the few rpm's  that I  
> need and now want to fine tune the process.
>
> Please take a look at my .rpmmacros below. In particular, the  
> addition to the %configure macro in the last line (which is more  
> like what I want to do, but I'm not sure of the syntax):
>
> ----------- start .rpmmacros ------------------------
> %packager	Ritesh Sood <riteshsood at gmail.com>
> %vendor       	Dept. of ECE, UC Davis (Internal Use)
>
> %_topdir       	%(echo $HOME)/ECESysAdmin/Syslog-ng/RPM-Build
>
> %configure \
>  CFLAGS="${CFLAGS:-%optflags}" ; export CFLAGS ; \
>  CXXFLAGS="${CXXFLAGS:-%optflags}" ; export CXXFLAGS ; \
>  ./configure --host=%{_host} --build=%{_build} \\\
>        ... (original code from /usr/lib/rpm/macros) ...
> 	%{?pkg_config_flags}
> ----------- end .rpmmacros ------------------------
>
> The idea being that if I want to build the package ``pcre-ece" which  
> requires configure time flags, the spec file would be something like
>
> ----------- start pcre-ece.spec ------------------------
> %define name 		pcre-ece
> %define orig_name	pcre
> %define version 	7.8
> %define release 	1
>
> %define _prefix 	/usr/local
> %define _docdir 	%{_datadir}/doc/%{orig_name}
> %define pkg_config_flags       --enable-unicode-properties --enable- 
> pcregrep-libz --enable-pcregrep-libbz2
> 						--disable-pcretest-libreadline
>
> Summary: 	Perl-compatible regular expression library
> Name: 		%{name}
> Version: 	%{version}
> Release: 	%{release}
> Source: 	%{orig_name}-%{version}.tar.bz2
> URL: 		http://www.pcre.org/
> License: 	BSD
> Group: 		System Environment/Libraries
> BuildRoot: 	%{_builddir}/%{orig_name}-root
> Prereq: 	/sbin/ldconfig
> BuildPrereq: 	sed
> .
> .
> .
> ----------- end pcre-ece.spec ------------------------
>
> Coming back to ``%{?pkg_config_flags}" in .rpmmacros above, if the  
> spec file defines ``pkg_config_flags", then it would be appended to  
> the default expansion of the ``configure" macro; if not, nothing  
> would be appended. The ``?" in the above is a conjectured syntax to  
> achieve what i've stated above.
>
> I'm not able to find good documentation on the syntax and rules of  
> these macros (i'm familiar with those of ``make"). Neither at
>    	http://rpm.org/wiki/Docs#PackagerDocumentation
> nor in the books
> 	http://www.rpm.org/max-rpm-snapshot/
> 	http://docs.fedoraproject.org/drafts/rpm-guide-en/
> Any help in finding documentation is much appreciated.
>
> Secondly, it would be good to have the facility to append per- 
> package flags to other macros. I found the following in one of Suse  
> linux's RPM spec file
> ----------- start code ------------------------
> %build
> %{expand: %%define optflags %{optflags} -fPIC}
> ----------- end code ------------------------
> So just to add the ``-fPIC" flag, poor guy has to jump through all  
> those hoops. How about something like the following appearing in the  
> ``configure" macro instead:
> ----------- start code ------------------------
> CFLAGS="${CFLAGS:-%optflags:-%{?pkg_cflags}}" ; export CFLAGS ; \
> CXXFLAGS="${CXXFLAGS:-%optflags:-%{?pkg_cxxflags}}" ; export  
> CXXFLAGS ; \
> ----------- end code ------------------------
> and while we're at it, might as well add
> ----------- start code ------------------------
> LDFLAGS="${LDFLAGS:-%{?pkg_ldflags}}" ; export LDFLAGS ; \
> ----------- end code ------------------------
> Again, the syntax is my guess as to what it might look like, but you  
> get the idea.
>
>
> Looking forward to feedback on the above suggestions.
>
> Ritesh
>

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