spec: Unify with RHEL8 packaging changes

* Use published qemu-slof archives
* Use the release date name as the package version
* Different install location depending on fedora vs RHEL
* A few other misc tweaks

Patch from mrezanin

Signed-off-by: Cole Robinson <crobinso@redhat.com>

.gitignore

@@ -1 +1 @@
-/SLOF-*.tar.gz
+/qemu-slof-*.tar.gz

SLOF.spec

@@ -1,31 +1,27 @@
-%global gittagdate 20200327
 %global gittagdate 20200717
+%global gittagcommit e18ddad8
 
 # Disable debuginfo because it is of no use to us.
 %global debug_package %{nil}
 
 %if 0%{?fedora:1}
 %define cross 1
+%define targetdir qemu
+%else
+%define targetdir qemu-kvm
 %endif
 
 %global gittag qemu-slof-%{gittagdate}
 
 Name:           SLOF
-Version:        0.1.git%{gittagdate}
-Release:        2%{?dist}
+Version:        %{gittagdate}
+Release:        3.git%{gittagcommit}%{?dist}
 Summary:        Slimline Open Firmware
 
 License:        BSD
 URL:            http://www.openfirmware.info/SLOF
 
-
-# There are no upstream tarballs.  To prepare a tarball, do:
-#
-# git clone git://github.com/aik/SLOF.git
-# cd SLOF
-# git archive -o ../SLOF-{gittagdate}.tar.gz \
-#     --prefix=SLOF-{gittagdate}/ {gittag}
-Source0:        SLOF-%{gittagdate}.tar.gz
+Source0:        https://github.com/aik/SLOF/archive/qemu-slof-%{gittagdate}.tar.gz
 
 
 %if 0%{?cross:1}
@@ -33,6 +29,7 @@ BuildArch:      noarch
 BuildRequires:  gcc-powerpc64-linux-gnu
 %else
 ExclusiveArch:  ppc64le
+BuildArch: noarch
 %endif
 
 BuildRequires:  make
@@ -41,7 +38,6 @@ BuildRequires:  perl-interpreter
 BuildRequires:  perl(Getopt::Std)
 BuildRequires:  perl(Data::Dumper)
 
-
 %description
 Slimline Open Firmware (SLOF) is initialization and boot source code
 based on the IEEE-1275 (Open Firmware) standard, developed by
@@ -56,26 +52,35 @@ separately.  It is a dependency of qemu-system-ppc64.
 
 
 %prep
-%setup -q -n SLOF-%{gittagdate}
+%setup -q -n SLOF-qemu-slof-%{gittagdate}
 %autopatch -p1
 
 %build
 %if 0%{?cross:1}
 export CROSS="powerpc64-linux-gnu-"
+%else
+export CROSS=""
 %endif
+
+%if 0%{?rhel:1}
+# Workaround for problems on the TPS machines.  They have a
+# environment variable called "RELEASE" which somehow confuses the
+# SLOF Makefiles which also use a variable named RELEASE.
+unset RELEASE
+%endif
+
 make qemu %{?_smp_mflags} V=2
 
-
 %install
-mkdir -p %{buildroot}%{_datadir}/qemu
-cp -a boot_rom.bin %{buildroot}%{_datadir}/qemu/slof.bin
+mkdir -p %{buildroot}%{_datadir}/%{targetdir}
+install -c -m 0644 boot_rom.bin %{buildroot}%{_datadir}/%{targetdir}/slof.bin
 
 
 %files
 %doc LICENSE
 %doc README
-%dir %{_datadir}/qemu
-%{_datadir}/qemu/slof.bin
+%dir %{_datadir}/%{targetdir}
+%{_datadir}/%{targetdir}/slof.bin
 
 
 %changelog

sources

@@ -1 +1 @@
-SHA512 (SLOF-20200717.tar.gz) = f0d18ab68c02748e8893b1a8cc21d478d59a9e17aba392907e72155885158046ed2fa3591f37abcba27597c68ad00865923108f85904dad8d73273a62aca2a56
+SHA512 (qemu-slof-20200717.tar.gz) = 8292a8f524d767971340cf3871f2bd880bc4f75c96f78dd39f076be1475512e11a08a634fccb0d4f0a1c2ad2c3272ef2d7046907ece3f5cbf8d36c41e09c516c