Use %setup to unpack tarballs.

cppad.spec

@@ -13,7 +13,7 @@
 # https://fedoraproject.org/wiki/Packaging:Versioning
 Name: cppad
 Version: %{yyyymmdd}.5
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: C++ Algorithmic Differentiation (AD), %{name}-devel and %{name}-doc
 
 License: EPL-2.0 or GPLv2+
@@ -62,27 +62,18 @@ of %{name}-devel in
 The documentation, for the most recent version of %{name}, can be found at
      http://coin-or.github.io/CppAD
 
-# -----------------------------------------------------------------------------
-# The user can compile with or without debugging using this library,
-# because the prep seciton ensures CPPAD_DEBUG_AND_RELEASE is defined.
-# The cppad_lib library has gotten larger, so we include a debug version.
-%debug_package
-
 # -----------------------------------------------------------------------------
 # prep
 # -----------------------------------------------------------------------------
 %prep
 #
-# This source code tarball creates CppAD-%%{version}
-rm -rf CppAD-%{version}
-tar -xzf %{_topdir}/SOURCES/%{version}.tar.gz
-#
-# This documentation tarball creates CppAD-%%{yyymmdd}.doc
-rm -rf CppAD-%{yyyymmdd}.doc
-tar -xzf %{_topdir}/SOURCES/%{yyyymmdd}.doc.tar.gz
+# Create an empty directory named cppad-%%{version}, 
+# changed into that directory and unpack Source0 and Source1.
+%setup -q -c -a 0 -a 1
 #
 # move the documentaion to the build directory
 mv CppAD-%{yyyymmdd}.doc/doc CppAD-%{version}/doc
+#
 mv CppAD-%{version}/COPYING  COPYING
 mv CppAD-%{version}/uw_copy_040507.html uw_copy_040507.html
 # ----------------------------------------------------------------------------
@@ -183,9 +174,17 @@ cppad_cxx_flags='-Wall -pedantic-errors -std=c++11 -Wshadow -Wconversion'
 # use the installed include files to compile and run the tests
 %check
 make %{?_smp_mflags} check
-
+# ----------------------------------------------------------------------------
+# %%clean
+# Use %%clean with no arguments to surpress the cleanup of BUILDROOT 
+# This enables one to check that the necessary files are installed.
 # ----------------------------------------------------------------------------
 %changelog
+* Sun Mar 07 2021 Brad Bell <bradbell at seanet dot com> - 20210000.5-2
+- Remove %%debug_package (not necessary to create debug info).
+- Use %%setup to unpack tarballs (sets premissions properly).
+- Add comments about using %%clean to check BUILDROOT.
+
 * Sun Feb 28 2021 Brad Bell <bradbell at seanet dot com> - 20210000.5-1
 - Advance to upstream source 20210000.5
 - Remove patches that are no longer necessary.