backports lwtnn to 80x

eigen.spec

@@ -1,4 +1,5 @@
 ### RPM external eigen 3.2.2
+## INITENV +PATH PKG_CONFIG_PATH %{i}/share/pkgconfig
 ## NOCOMPILER
 %define tag 87b069eefbf748ee3aba16fe5f84b4ccd6227082
 %define branch cms/3.2.2

lwtnn.spec

@@ -9,7 +9,6 @@ Patch0: lwtnn-1.0-boost-fix
 
 %build
 
-export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$EIGEN_ROOT/share/pkgconfig
 export BOOST_ROOT
 make all
 

py2-pkgconfig-toolfile.spec

@@ -0,0 +1,24 @@
+### RPM external py2-pkgconfig-toolfile 1.0
+Requires: py2-pkgconfig
+%prep
+
+%build
+
+%install
+
+mkdir -p %i/etc/scram.d
+cat << \EOF_TOOLFILE >%i/etc/scram.d/py2-pkgconfig.xml
+<tool name="py2-pkgconfig" version="@TOOL_VERSION@">
+  <client>
+    <environment name="PY2_PKGCONFIG_BASE" default="@TOOL_ROOT@"/>
+  </client>
+  <runtime name="PYTHONPATH" value="$PY2_PKGCONFIG_BASE/lib/python@PYTHONV@/site-packages" type="path"/>
+  <use name="python"/>
+</tool>
+EOF_TOOLFILE
+
+export PYTHONV=$(echo $PYTHON_VERSION | cut -f1,2 -d.)
+
+## IMPORT scram-tools-post
+
+