Switch to implementation that is backwards compatible to older RPM

- Change control macro for in-source/out-of-source to %__cmake_in_source_build

cmake.spec

@@ -67,7 +67,7 @@
 
 Name:           %{orig_name}%{?name_suffix}
 Version:        %{major_version}.%{minor_version}.0
-Release:        0.6%{?relsuf}%{?dist}
+Release:        0.7%{?relsuf}%{?dist}
 Summary:        Cross-platform make system
 
 # most sources are BSD
@@ -503,6 +503,10 @@ mv -f Modules/FindLibArchive.disabled Modules/FindLibArchive.cmake
 
 
 %changelog
+* Fri Jul 03 2020 Neal Gompa <ngompa13@gmail.com> - 3.18.0-0.7.rc2
+- Switch to implementation that is backwards compatible to older RPM
+- Change control macro for in-source/out-of-source to %%__cmake_in_source_build
+
 * Fri Jul 03 2020 Igor Raits <ignatenkobrain@fedoraproject.org> - 3.18.0-0.6.rc2
 - Add out-of-source builds controlled by a macro (%%__cmake_out_of_source_build)
 

macros.cmake

@@ -7,8 +7,7 @@
 %_cmake_version @@CMAKE_VERSION@@
 %__cmake /usr/bin/cmake
 %__ctest /usr/bin/ctest
-%__cmake_out_of_source_build 0
-%__cmake_builddir %[%{?__cmake_out_of_source_build} ? "%{_vpath_builddir}" : "."]
+%__cmake_builddir %{!?__cmake_in_source_build:"%{_vpath_builddir}"}%{?__cmake_in_source_build:"."}
 
 # - Set default compile flags
 # - CMAKE_*_FLAGS_RELEASE are added *after* the *FLAGS environment variables