Fix out-of-source build on F33 (bug #1863317)

cereal.spec

@@ -6,7 +6,7 @@
 
 Name:           cereal
 Version:        1.3.0
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        A header-only C++11 serialization library
 License:        BSD
 Url:            http://uscilab.github.io/cereal/
@@ -14,7 +14,7 @@ Source0:        https://github.com/USCiLab/cereal/archive/v%{version}.tar.gz#/%{
 
 BuildRequires:  gcc-c++
 BuildRequires:  boost-devel
-BuildRequires:  cmake3 >= 3.0
+BuildRequires:  cmake >= 3.0
 
 %description
 cereal is a header-only C++11 serialization library. cereal takes arbitrary
@@ -40,16 +40,14 @@ This package contains development headers and libraries for the cereal library
 %setup -q
 
 %build
-mkdir %{_target_platform}
-pushd %{_target_platform}
-%{cmake3} .. -DSKIP_PORTABILITY_TEST=ON -DWITH_WERROR=OFF
-%make_build
+%{cmake} .. -DSKIP_PORTABILITY_TEST=ON -DWITH_WERROR=OFF
+%cmake_build
 
 %install
-%make_install -C %{_target_platform}
+%cmake_install
 
 %check
-make -C %{_target_platform} test
+%ctest
 
 %files devel
 %doc README.md
@@ -59,6 +57,9 @@ make -C %{_target_platform} test
 %{_datadir}/cmake/%{name}
 
 %changelog
+* Mon Aug 03 2020 Christoph Junghans <junghans@votca.org> - 1.3.0-5
+- Fix out-of-source build on F33 (bug #1863317)
+
 * Sat Aug 01 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.0-4
 - Second attempt - Rebuilt for
   https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild