8. Multi-architectural RPM Building

RPM can now be used to build packages for the Intel i386, the Digital Alpha running Linux, and the Sparc (and others). There are several features that make building packages on all platforms easy. The first of these is the "optflags" directive in the /etc/rpmrc. It can be used to set flags used when building software to architecture specific values. Another feature is the "arch" macros in the spec file. They can be used to do different things depending on the architecture you are building on. Another feature is the "Exclude" directive in the header.

8.1. Sample spec File

The following is part of the spec file for the "fileutils" package. It is setup to build on both the Alpha and the Intel.

Summary: GNU File Utilities
Name: fileutils
Version: 3.16
Release: 1
Copyright: GPL
Group: Utilities/File
Source0: prep.ai.mit.edu:/pub/gnu/fileutils-3.16.tar.gz
Source1: DIR_COLORS
Patch: fileutils-3.16-mktime.patch

%description
These are the GNU file management utilities.  It includes programs
to copy, move, list, etc, files.

The ls program in this package now incorporates color ls!

%prep
%setup

%ifarch alpha
%patch -p1
autoconf
%endif
%build
configure --prefix=/usr --exec-prefix=/
make CFLAGS="$RPM_OPT_FLAGS" LDFLAGS=-s

%install
rm -f /usr/info/fileutils*
make install
gzip -9nf /usr/info/fileutils*

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