diff --git a/cmake/Modules/GrccCompile.cmake b/cmake/Modules/GrccCompile.cmake
index 4a917c5..a33969a 100644
--- a/cmake/Modules/GrccCompile.cmake
+++ b/cmake/Modules/GrccCompile.cmake
@@ -30,11 +30,19 @@
     )
 string(REPLACE ";" ":" PYTHONPATH "${PYTHONPATH}")
 
+if(UNIX)
+  set(LD_PATH_VAR "LD_LIBRARY_PATH")
+  if(APPLE)
+    set(LD_PATH_VAR "DYLD_LIBRARY_PATH")
+  endif()
+  set(LD_PATH ${CMAKE_BINARY_DIR}/lib)
+endif(UNIX)
+
 macro(GRCC_COMPILE file_name)
     if(${CMAKE_VERSION} VERSION_LESS "3.2.0") #use wrapper script to set the environment on systems without cmake 3.2
         ADD_CUSTOM_COMMAND(
             OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${file_name}
-            COMMAND /bin/sh ${CMAKE_SOURCE_DIR}/cmake/Modules/GrccCompileWrapper.sh "${PYTHONPATH}" "${CMAKE_SOURCE_DIR}/grc" "${PC_GNURADIO_RUNTIME_PREFIX}/${GR_RUNTIME_DIR}/grcc -d ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${file_name}.grc"
+            COMMAND /bin/sh ${CMAKE_SOURCE_DIR}/cmake/Modules/GrccCompileWrapper.sh "${PYTHONPATH}" ${LD_PATH_VAR} ${LD_PATH} "${CMAKE_SOURCE_DIR}/grc" "${PC_GNURADIO_RUNTIME_PREFIX}/${GR_RUNTIME_DIR}/grcc -d ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${file_name}.grc"
             COMMAND "${CMAKE_COMMAND}" -E rename ${CMAKE_CURRENT_BINARY_DIR}/${file_name}.py ${CMAKE_CURRENT_BINARY_DIR}/${file_name}
             DEPENDS ${file_name}.grc
         )
@@ -42,7 +50,7 @@
         ADD_CUSTOM_COMMAND(
             OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${file_name}
             COMMAND "${CMAKE_COMMAND}"
-                -E env PYTHONPATH="${PYTHONPATH}" GRC_BLOCKS_PATH=${CMAKE_SOURCE_DIR}/grc
+                -E env PYTHONPATH="${PYTHONPATH}" ${LD_PATH_VAR}="${LD_PATH}" GRC_BLOCKS_PATH=${CMAKE_SOURCE_DIR}/grc
                 ${PC_GNURADIO_RUNTIME_PREFIX}/${GR_RUNTIME_DIR}/grcc -d ${CMAKE_CURRENT_BINARY_DIR}
                 ${CMAKE_CURRENT_SOURCE_DIR}/${file_name}.grc
             COMMAND "${CMAKE_COMMAND}" -E rename ${CMAKE_CURRENT_BINARY_DIR}/${file_name}.py ${CMAKE_CURRENT_BINARY_DIR}/${file_name}
diff --git a/cmake/Modules/GrccCompileWrapper.sh b/cmake/Modules/GrccCompileWrapper.sh
index 6c7f60f..e1fb199 100644
--- a/cmake/Modules/GrccCompileWrapper.sh
+++ b/cmake/Modules/GrccCompileWrapper.sh
@@ -1,3 +1,4 @@
 export PYTHONPATH="$1"
 export GRC_BLOCKS_PATH="$2"
-eval "$3"
+export $3="$4"
+eval "$5"