Support automatically doing out of tree builds if cmake is configured as such

kf5.spec

@@ -1,6 +1,6 @@
 Name:    kf5
 Version: 5.71.0
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Filesystem and RPM macros for KDE Frameworks 5
 License: BSD
 URL:     http://www.kde.org
@@ -80,6 +80,9 @@ sed -i \
 
 
 %changelog
+* Fri Jul 03 2020 Neal Gompa <ngompa13@gmail.com> - 5.71.0-2
+- Support automatically doing out of tree builds if cmake is configured as such
+
 * Tue Jun 16 2020 Rex Dieter <rdieter@fedoraproject.org> - 5.71.0-1
 - 5.71.0
 

macros.kf5

@@ -23,6 +23,8 @@
   FFLAGS="${FFLAGS:-%optflags%{?_fmoddir: -I%_fmoddir}}" ; export FFLAGS ; \
   %{?__global_ldflags:LDFLAGS="${LDFLAGS:-%__global_ldflags}" ; export LDFLAGS ;} \
   %{?fedora:%{__cmake}}%{?rhel:%{__cmake3}} \\\
+    %{?__cmake_builddir:-S "%{_vpath_srcdir}"} \\\
+    %{?__cmake_builddir:-B "%{__cmake_builddir}"} \\\
     -DCMAKE_C_FLAGS_RELEASE:STRING="-DNDEBUG" \\\
     -DCMAKE_CXX_FLAGS_RELEASE:STRING="-DNDEBUG" \\\
     -DCMAKE_Fortran_FLAGS_RELEASE:STRING="-DNDEBUG" \\\