Support `suitesparse` path suffix on Windows for SuiteSparse and CXSparse

Change-Id: Iaf9b75dc1cb7da5d305ee3fac9a8c28b3d0a2346

cmake/FindCXSparse.cmake

diff --git a/cmake/FindCXSparse.cmake b/cmake/FindCXSparse.cmake
index 798809c..3f4b015 100644
--- a/cmake/FindCXSparse.cmake
+++ b/cmake/FindCXSparse.cmake
@@ -129,22 +129,22 @@
   /usr/local/homebrew/include # Mac OS X
   /opt/local/var/macports/software # Mac OS X.
   /opt/local/include
-  /usr/local/include/suitesparse # Linux.
-  /usr/include/suitesparse # Linux.
   /usr/include)
 list(APPEND CXSPARSE_CHECK_LIBRARY_DIRS
   /usr/local/lib
   /usr/local/homebrew/lib # Mac OS X.
   /opt/local/lib
-  /usr/local/lib/suitesparse # Linux.
-  /usr/lib/suitesparse # Linux.
   /usr/lib)
+# Additional suffixes to try appending to each search path.
+list(APPEND CXSPARSE_CHECK_PATH_SUFFIXES
+  suitesparse) # Linux/Windows
 
 # Search supplied hint directories first if supplied.
 find_path(CXSPARSE_INCLUDE_DIR
   NAMES cs.h
   HINTS ${CXSPARSE_INCLUDE_DIR_HINTS}
-  PATHS ${CXSPARSE_CHECK_INCLUDE_DIRS})
+  PATHS ${CXSPARSE_CHECK_INCLUDE_DIRS}
+  PATH_SUFFIXES ${CXSPARSE_CHECK_PATH_SUFFIXES})
 if (NOT CXSPARSE_INCLUDE_DIR OR
     NOT EXISTS ${CXSPARSE_INCLUDE_DIR})
   cxsparse_report_not_found(
@@ -155,7 +155,8 @@
 
 find_library(CXSPARSE_LIBRARY NAMES cxsparse
   HINTS ${CXSPARSE_LIBRARY_DIR_HINTS}
-  PATHS ${CXSPARSE_CHECK_LIBRARY_DIRS})
+  PATHS ${CXSPARSE_CHECK_LIBRARY_DIRS}
+  PATH_SUFFIXES ${CXSPARSE_CHECK_PATH_SUFFIXES})
 if (NOT CXSPARSE_LIBRARY OR
     NOT EXISTS ${CXSPARSE_LIBRARY})
   cxsparse_report_not_found(

cmake/FindSuiteSparse.cmake

diff --git a/cmake/FindSuiteSparse.cmake b/cmake/FindSuiteSparse.cmake
index 53cd9e4..ede687a 100644
--- a/cmake/FindSuiteSparse.cmake
+++ b/cmake/FindSuiteSparse.cmake
@@ -180,17 +180,16 @@
   /opt/local/include/ufsparse # Mac OS X
   /usr/local/homebrew/include # Mac OS X
   /usr/local/include
-  /usr/local/include/suitesparse
-  /usr/include/suitesparse # Ubuntu
   /usr/include)
 list(APPEND SUITESPARSE_CHECK_LIBRARY_DIRS
   /opt/local/lib
   /opt/local/lib/ufsparse # Mac OS X
   /usr/local/homebrew/lib # Mac OS X
   /usr/local/lib
-  /usr/local/lib/suitesparse
-  /usr/lib/suitesparse # Ubuntu
   /usr/lib)
+# Additional suffixes to try appending to each search path.
+list(APPEND SUITESPARSE_CHECK_PATH_SUFFIXES
+  suitesparse) # Windows/Ubuntu
 
 # Wrappers to find_path/library that pass the SuiteSparse search hints/paths.
 #
@@ -213,7 +212,8 @@
     find_path(${COMPONENT}_INCLUDE_DIR
       NAMES ${SUITESPARSE_FIND_${COMPONENT}_FILES}
       HINTS ${SUITESPARSE_INCLUDE_DIR_HINTS}
-      PATHS ${SUITESPARSE_CHECK_INCLUDE_DIRS})
+      PATHS ${SUITESPARSE_CHECK_INCLUDE_DIRS}
+      PATH_SUFFIXES ${SUITESPARSE_CHECK_PATH_SUFFIXES})
     if (${COMPONENT}_INCLUDE_DIR)
       message(STATUS "Found ${COMPONENT} headers in: "
         "${${COMPONENT}_INCLUDE_DIR}")
@@ -235,7 +235,8 @@
     find_library(${COMPONENT}_LIBRARY
       NAMES ${SUITESPARSE_FIND_${COMPONENT}_LIBRARIES}
       HINTS ${SUITESPARSE_LIBRARY_DIR_HINTS}
-      PATHS ${SUITESPARSE_CHECK_LIBRARY_DIRS})
+      PATHS ${SUITESPARSE_CHECK_LIBRARY_DIRS}
+      PATH_SUFFIXES ${SUITESPARSE_CHECK_PATH_SUFFIXES})
     if (${COMPONENT}_LIBRARY)
       message(STATUS "Found ${COMPONENT} library: ${${COMPONENT}_LIBRARY}")
       mark_as_advanced(${COMPONENT}_LIBRARY)