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

Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/cmake/FindSuperLU.cmake b/cmake/FindSuperLU.cmake
new file mode 100644
index 0000000..8a3df36
--- /dev/null
+++ b/cmake/FindSuperLU.cmake
@@ -0,0 +1,26 @@
+
+# Umfpack lib usually requires linking to a blas library.
+# It is up to the user of this module to find a BLAS and link to it.
+
+if (SUPERLU_INCLUDES AND SUPERLU_LIBRARIES)
+  set(SUPERLU_FIND_QUIETLY TRUE)
+endif (SUPERLU_INCLUDES AND SUPERLU_LIBRARIES)
+
+find_path(SUPERLU_INCLUDES
+  NAMES
+  supermatrix.h
+  PATHS
+  $ENV{SUPERLUDIR}
+  ${INCLUDE_INSTALL_DIR}
+  PATH_SUFFIXES
+  superlu
+  SRC
+)
+
+find_library(SUPERLU_LIBRARIES superlu PATHS $ENV{SUPERLUDIR} ${LIB_INSTALL_DIR} PATH_SUFFIXES lib)
+  
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(SUPERLU DEFAULT_MSG
+                                  SUPERLU_INCLUDES SUPERLU_LIBRARIES)
+
+mark_as_advanced(SUPERLU_INCLUDES SUPERLU_LIBRARIES)