Squashed 'third_party/eigen/' content from commit 61d72f6

Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/bench/btl/cmake/FindCBLAS.cmake b/bench/btl/cmake/FindCBLAS.cmake
new file mode 100644
index 0000000..554f029
--- /dev/null
+++ b/bench/btl/cmake/FindCBLAS.cmake
@@ -0,0 +1,34 @@
+# include(FindLibraryWithDebug)
+
+if (CBLAS_INCLUDES AND CBLAS_LIBRARIES)
+  set(CBLAS_FIND_QUIETLY TRUE)
+endif (CBLAS_INCLUDES AND CBLAS_LIBRARIES)
+
+find_path(CBLAS_INCLUDES
+  NAMES
+  cblas.h
+  PATHS
+  $ENV{CBLASDIR}/include
+  ${INCLUDE_INSTALL_DIR}
+)
+
+find_library(CBLAS_LIBRARIES
+  cblas
+  PATHS
+  $ENV{CBLASDIR}/lib
+  ${LIB_INSTALL_DIR}
+)
+
+find_file(CBLAS_LIBRARIES
+  libcblas.so.3
+  PATHS
+  /usr/lib
+  $ENV{CBLASDIR}/lib
+  ${LIB_INSTALL_DIR}
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(CBLAS DEFAULT_MSG
+                                  CBLAS_INCLUDES CBLAS_LIBRARIES)
+
+mark_as_advanced(CBLAS_INCLUDES CBLAS_LIBRARIES)