diff --git a/cmake/json.cmake b/cmake/json.cmake
index 6b3bd7d784..b1ee1cfd73 100644
--- a/cmake/json.cmake
+++ b/cmake/json.cmake
@@ -17,6 +17,9 @@ if (JSONCPP_FOUND)
     set(JSON_CPP_LINK_TYPE PUBLIC)
     set(PDAL_HAVE_JSONCPP 1)
 else()
+    unset(JSONCPP_INCLUDE_DIR CACHE)
+    unset(JSONCPP_LIBRARY CACHE)
+    unset(JSONCPP_ROOT_DIR CACHE)
     set(PDAL_JSONCPP_LIB_NAME pdal_jsoncpp)
     set(PDAL_JSONCPP_INCLUDE_DIR ${PDAL_VENDOR_DIR}/jsoncpp/dist)
     set(PDAL_JSONCPP_SRC ${PDAL_JSONCPP_INCLUDE_DIR}/jsoncpp.cpp)
diff --git a/cmake/modules/FindMatlab.cmake b/cmake/modules/FindMatlab.cmake
index 13ffcc90cf..dfa1fd201b 100644
--- a/cmake/modules/FindMatlab.cmake
+++ b/cmake/modules/FindMatlab.cmake
@@ -13,11 +13,11 @@
 set(MATLAB_FOUND 0)
 
 
-set(MATLAB_EXTERN_DIR ${MATLAB_ROOT}/extern/include)
+set(MATLAB_EXTERN_DIR $ENV{MATLAB_ROOT}/extern/include)
 if (APPLE)
-    set(MATLAB_LIB_DIR ${MATLAB_ROOT}/bin/maci64)
+    set(MATLAB_LIB_DIR $ENV{MATLAB_ROOT}/bin/maci64)
 elseif (UNIX)
-    set(MATLAB_LIB_DIR ${MATLAB_ROOT}/bin/glnxa64)
+    set(MATLAB_LIB_DIR $ENV{MATLAB_ROOT}/bin/glnxa64)
 endif()
 
 message(STATUS ${MATLAB_LIB_DIR})
@@ -30,7 +30,11 @@ find_library(MATLAB_MX_LIBRARY
     mx
     ${MATLAB_LIB_DIR}
     )
-find_path(MATHALB_INCLUDE_DIR
+find_library(MATLAB_ENG_LIBRARY
+    eng
+    ${MATLAB_LIB_DIR}
+    )
+find_path(MATLAB_INCLUDE_DIR
     "mat.h"
     ${MATLAB_EXTERN_DIR}
     )
@@ -41,7 +45,6 @@ set(MATLAB_LIBRARIES
     )
 mark_as_advanced(MATLAB_LIBRARIES)
 
-
 if (MATLAB_MAT_LIBRARIES AND MATLAB_INCLUDE_DIR)
     set(MATLAB_FOUND 1)
 endif()
diff --git a/plugins/matlab/CMakeLists.txt b/plugins/matlab/CMakeLists.txt
index 644a3b996a..db18166932 100644
--- a/plugins/matlab/CMakeLists.txt
+++ b/plugins/matlab/CMakeLists.txt
@@ -2,6 +2,11 @@
 
 include(${PDAL_CMAKE_DIR}/matlab.cmake)
 
+#set(CMAKE_SKIP_RPATH true)
+#if (LINUX)
+
+#endif()
+
 PDAL_ADD_PLUGIN(libname_writer writer matlab
     FILES
         ./filters/Script.cpp
@@ -32,38 +37,60 @@ PDAL_ADD_PLUGIN(matlab_libname filter matlab
         ${MATLAB_ENG_LIBRARY} ${MATLAB_MX_LIBRARY} ${MATLAB_MAT_LIBRARY}
     )
 target_include_directories(${matlab_libname} PRIVATE
-    ${MATLAB_INCLUDE_DIR} )
+    ${MATLAB_INCLUDE_DIR}
+    ${PDAL_JSONCPP_INCLUDE_DIR} )
 
 if (WITH_TESTS)
     PDAL_ADD_TEST(pdal_io_matlab_writer_test
         FILES
             test/MatlabWriterTest.cpp
         LINK_WITH
-           ${MATLAB_MX_LIBRARY} ${MATLAB_MAT_LIBRARY} ${libname_writer}
+           ${libname_writer}
     )
     target_include_directories(pdal_io_matlab_writer_test PRIVATE
         ${PDAL_IO_DIR}
         ${MATLAB_INCLUDE_DIR})
+    set_target_properties(pdal_io_matlab_writer_test
+        PROPERTIES
+        INSTALL_RPATH "${CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES}:${MATLAB_LIB_DIR}"
+        BUILD_WITH_INSTALL_RPATH true
+    )
 
 
     PDAL_ADD_TEST(pdal_io_matlab_reader_test
         FILES
             test/MatlabReaderTest.cpp
         LINK_WITH
-           ${MATLAB_MX_LIBRARY} ${MATLAB_MAT_LIBRARY} ${libname_reader}
+           ${libname_reader}
     )
     target_include_directories(pdal_io_matlab_reader_test PRIVATE
         ${PDAL_IO_DIR}
         ${MATLAB_INCLUDE_DIR})
+    set_target_properties(pdal_io_matlab_reader_test
+        PROPERTIES
+        INSTALL_RPATH "${CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES}:${MATLAB_LIB_DIR}"
+        BUILD_WITH_INSTALL_RPATH true
+    )
 
     PDAL_ADD_TEST(pdal_filters_matlab_test
         FILES
             ./filters/Script.cpp
             ./filters/Environment.cpp
             ./test/MatlabFilterTest.cpp
-        LINK_WITH ${MATLAB_ENG_LIBRARY} ${MATLAB_MX_LIBRARY} ${MATLAB_MAT_LIBRARY}
-)
+        LINK_WITH
+            ${MATLAB_ENG_LIBRARY}
+            ${MATLAB_MX_LIBRARY}
+            ${MATLAB_MAT_LIBRARY}
+    )
+    set_target_properties(pdal_filters_matlab_test
+        PROPERTIES
+        INSTALL_RPATH "${CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES}:${MATLAB_LIB_DIR}:${CMAKE_LIBRARY_OUTPUT_DIRECTORY}"
+        BUILD_WITH_INSTALL_RPATH true
+    )
+]]
     target_include_directories(pdal_filters_matlab_test PRIVATE
-        ${ROOT_DIR} ${MATLAB_INCLUDE_DIR})
+        ${ROOT_DIR}
+        ${MATLAB_INCLUDE_DIR}
+        ${PDAL_JSONCPP_INCLUDE_DIR} )
 endif()