# File header
Name: %{name}  
Version: %{version}  # Software version, which is the same as the upstream community version
Release: 1 # Release number of the software package. The number is incremented by 1 when a small patch is installed on the software package.
Summary: xxxx # Summary of the software package
License: GPLv2+  # Protocol
URL: www.foo.org  # Home page of the software
Source0: www.xxx%{name}-%{version}.tar.gz  # Address of the software package's source code. Most of the packages are the .tar.gz packages.
BuildArch:noarch  # The packaged files do not depend on any architecture (such as the shell script and data file). If there is support for specific architectures, they will not be written and will be automatically detected and obtained.

Patch0:

BuildRequires:    # List of dependency packages required for building the software package
Requires:    # List of dependency packages required for installing the software package. rpmbuild automatically detects dependencies, so they do not need to be written.

%description

# Preprocessing phase: Prepare for packaging, decompress the source package, and copy the source package from the SOURCE directory to the BUILD directory.
%prep
%setup -q  # Decompression
%autosetup  # Install a patch after decompression. (Select one out of two options.)

# Build phase: Use make and make install for C language-related operations, and use pybuild for Python-related operations.
%build
%configure
make %{?_smp_mflags}

# Installation phase: Read files in the %{build} directory and install them in the %{buildroot} directory.
%install
rm -rf %{buildroot}
make install DESTDIR=%{buildroot}

%clean
rm -rf %{buildroot}

# File definition phase: Describe the files and directories in the %{buildroot} directory to be packaged into the RPM package. Do not enter absolute paths, instead use macros or variables to represent relative paths. (The packaging content needs to be specified.)
%files
%defattr(-,root,root,-)   # %defattr (<file permission>, <user>, <user group>, <directory permission>) is used to set permissions for all files (644) and folders (755).
%attr(0644, root, root) FOO.BAR   # %attr(mode, user, group) is used to implement fine-grained permission control on files.
%doc

# Log modification phase
%changelog

Summary:            A program that ejects removable media using software control
Name:               eject
Version:            2.1.5
Release:            21%{?dist}
License:            GPLv2+
Group:              System Environment/Base
Source:             %{name}-%{version}.tar.gz  # Source file. %{name} and %{version} are preset macros that reference the content of the name and version fields. Using this method is more convenient than setting a fixed name and version during software package upgrade.
Patch1:             eject-2.1.1-verbose.patch
Patch2:             eject-timeout.patch
Patch3:             eject-2.1.5-opendevice.patch
Patch4:             eject-2.1.5-spaces.patch
Patch5:             eject-2.1.5-lock.patch
Patch6:             eject-2.1.5-umount.patch
URL:                http://www.pobox.com/~tranter
ExcludeArch:        s390 s390x   # Architectures on which build is not performed
BuildRequires:      gettext   # Dependency build
BuildRequires:      libtool

%description
The eject program allows the user to eject removable media (typically
CD-ROMs, floppy disks or Iomega Jaz or Zip disks) using software
control. Eject can also control some multi-disk CD changers and even
some devices' auto-eject features.

Install eject if you'd like to eject removable media using software
control.

%prep
%autosetup -n %{name}  # Patches are installed by default during file copying.

%build
%configure
make %{?_smp_mflags}

%install
%make_install

install -m 755 -d %{buildroot}/%{_sbindir}   
ln -s ../bin/eject %{buildroot}/%{_sbindir}

%find_lang %{name}

%files -f %{name}.lang   # Package all binary files.
%doc README TODO COPYING ChangeLog   # Copy the .doc files in the build directory to the buildroot directory, and then package and compress them into an RPM package.
%{_bindir}/*   # Preset macro, which packages all binary files in /usr/dir.
%{_sbindir}/*  
%{_mandir}/man1/*

%changelog
* Tue Feb 08 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.1.5-21
- Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild

* Fri Jul 02 2010 Kamil Dudka <kdudka@redhat.com> 2.1.5-20
- handle multi-partition devices with spaces in mount points properly (#608502)

rpm -E "macro"
Example:
[root@localhost rpmbuild]# rpm -E "{_bindir}"
/usr/bin