Replacing hard names with macros, returning macro prever and commenting its definition in spec file

log4cplus.spec

@@ -1,13 +1,13 @@
-%global prever rc3
+#%%global prever rc3
 
 Name: log4cplus
 Version: 1.2.0
-Release: 1%{?dist}
+Release: 1.0%{?prever:.%{prever}}%{?dist}
 Summary: Logging Framework for C++
 
 License: ASL 2.0
 URL: http://sourceforge.net/projects/log4cplus
-Source0: http://downloads.sourceforge.net/log4cplus/log4cplus-%{version}.tar.xz
+Source0: http://downloads.sourceforge.net/%{name}/%{name}-%{version}%{?prever:-%{prever}}.tar.xz
 Group: System Environment/Libraries
 
 %description
@@ -18,14 +18,14 @@ modeled after the Java log4j API.
 %package devel
 Summary: Development files for log4cplus C++ logging framework
 Group: Development/Libraries
-Requires: log4cplus = %{version}-%{release}
+Requires: %{name} = %{version}-%{release}
 
 %description devel
 This package contains headers and libraries needed to develop applications
 using log4cplus logging framework.
 
 %prep
-%setup -q -n log4cplus-%{version}
+%setup -q %{?prever:-n %{name}-%{version}-%{prever}}
 
 %build
 export CFLAGS=$RPM_OPT_FLAGS