Description of problem:
It's very easy to get a bit more out of the existing R source by adding some more config options.  First, instruct the build to use the system blas.  Less duplication, possibly better implementation.

Second, use LTO.  This compiler feature seems stable not and it does indeed lead to small performance gains.  Not too much but it's measurable.

Version-Release number of selected component (if applicable):
R-3.0.2-1

How reproducible:
N/A

Steps to Reproduce:
1.look at .spec file
2.
3.

Actual results:
Add the patch below.

Expected results:


Additional info:

Use this patch:
--- R.spec-save 2013-12-03 19:30:07.000000000 -0500
+++ R.spec      2013-12-03 19:53:27.000000000 -0500
@@ -303,10 +303,12 @@
 ( %configure \
     --with-system-zlib --with-system-bzlib --with-system-pcre \
     --with-lapack \
+    --with-blas \
     --with-tcl-config=%{_libdir}/tclConfig.sh \
     --with-tk-config=%{_libdir}/tkConfig.sh \
     --enable-R-shlib \
     --enable-prebuilt-html \
+    --enable-lto \
     rdocdir=%{?_pkgdocdir}%{!?_pkgdocdir:%{_docdir}/%{name}-%{version}} \
     rincludedir=%{_includedir}/R \
     rsharedir=%{_datadir}/R) \