Minor spec fixes

- Adjustments to build on EPEL 8 with RHEL 8.4+
- Minor cleanup of Source0 and use newer autosetup macro

kokkos.spec

@@ -1,3 +1,6 @@
+# Needed for EPEL8
+%undefine __cmake_in_source_build
+
 Name:           kokkos
 Version:        3.4.00
 %global         sover 3.4
@@ -8,10 +11,10 @@ ExcludeArch: i686 armv7hl
 
 License:        BSD
 URL:            https://github.com/kokkos/kokkos
-Source0:        https://github.com/kokkos/kokkos/archive/%{version}.tar.gz#/%{name}-%{version}.tar.gz
+Source0:        %{url}/archive/%{version}/%{name}-%{version}.tar.gz
 
 BuildRequires:  gcc-c++
-BuildRequires:  cmake3 >= 3.0
+BuildRequires:  cmake >= 3.16
 BuildRequires:  hwloc-devel
 
 %global kokkos_desc \
@@ -35,10 +38,10 @@ Requires:       hwloc-devel
 This package contains the development files of %{name}.
 
 %prep
-%setup -q
+%autosetup -p1
 
 %build
-%{cmake3} \
+%cmake \
   -DKokkos_ENABLE_TESTS=On \
 %ifarch ppc64le
   -DKokkos_ARCH_POWER8=ON \
@@ -50,17 +53,17 @@ This package contains the development files of %{name}.
   -DKokkos_ENABLE_SERIAL=ON \
   -DKokkos_ENABLE_HWLOC=ON \
   %{nil}
-%cmake3_build
+%cmake_build
 
 %install
-%cmake3_install
+%cmake_install
 
 %check
 # https://github.com/kokkos/kokkos/issues/2959 - unstable test
 %ifarch s390x
 %global testargs --exclude-regex KokkosCore_UnitTest_StackTraceTest
 %endif
-%ctest3 %{?testargs}
+%ctest %{?testargs}
 
 %files
 %doc README.md