Fix builds for EPEL-8

Signed-off-by: Jonathan Dieter <jdieter@gmail.com>

duperemove.spec

@@ -1,6 +1,6 @@
 Name:           duperemove
 Version:        0.11.1
-Release:        1%{?dist}
+Release:        1%{?dist}.1
 Summary:        Tools for deduping file systems
 License:        GPLv2
 URL:            https://github.com/markfasheh/%{name}
@@ -12,8 +12,8 @@ BuildRequires:  libgcrypt-devel
 BuildRequires:  xxhash-devel
 BuildRequires:  libatomic
 BuildRequires:  gcc
-# Enable devtoolset so we get libatomic in EPEL
-%if 0%{?rhel} == 7
+# Enable devtoolset so we get libatomic in EPEL-7
+%if 0%{?el7}
 BuildRequires:  devtoolset-7-toolchain, devtoolset-7-libatomic-devel
 %endif
 
@@ -32,7 +32,7 @@ rm -f xxhash.c xxhash.h
 
 %build
 %set_build_flags
-%if 0%{?rhel}
+%if 0%{?el7}
 . /opt/rh/devtoolset-7/enable
 %endif
 %make_build
@@ -53,6 +53,9 @@ rm -f xxhash.c xxhash.h
 %{_sbindir}/show-shared-extents
 
 %changelog
+* Tue Dec 10 2019 Jonathan Dieter <jdieter@gmail.com> - 0.11.1-1.1
+- Fix build for EPEL-8
+
 * Sun Dec 08 2019 Jonathan Dieter <jdieter@gmail.com> - 0.11.1-1
 - New release