diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a9b79b3..4e92c721 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,16 @@
 cmake_minimum_required(VERSION 3.14.0)
 project(crypto C)
 
+#
+# CUSTOM PATH Definiton
+#
+set(SA_CUSTOM_PATH_DEFAULT "../../sa/custom")
+set(KEY_CUSTOM_PATH_DEFAULT "../../key/custom")
+set(MC_CUSTOM_PATH_DEFAULT "../../mc/custom")
+set(CRYPTO_CUSTOM_PATH_DEFAULT "../../crypto/custom")
+
+
+
 #
 # Define Build Flags
 # The default value is captured in line, change with flag `-DXYZ=1`
@@ -27,14 +37,19 @@ option(CODECOV "Code Coverage" OFF)
 option(CRYPTO_LIBGCRYPT "Cryptography Module - Libgcrypt" ON)
 option(CRYPTO_KMC "Cryptography Module - KMC" OFF)
 option(CRYPTO_WOLFSSL "Cryptography Module - WolfSSL" OFF)
+option(CRYPTO_CUSTOM "Cryptography Module - CUSTOM" OFF)
+option(CRYPTO_CUSTOM_PATH "Cryptography Module - CUSTOM PATH" OFF)
 option(DEBUG "Debug" OFF)
 option(KEY_CUSTOM "Key Module - Custom" OFF)
+option(KEY_CUSTOM_PATH "Custom Key Path" OFF)
 option(KEY_INTERNAL "Key Module - Internal" ON)
 option(KEY_KMC "Key Module - KMC" OFF)
 option(MC_CUSTOM "Monitoring and Control - Custom" OFF)
+option(MC_CUSTOM_PATH "Custom Monitoring and Control path" OFF)
 option(MC_DISABLED "Monitoring and Control - Disabled" OFF)
 option(MC_INTERNAL "Monitoring and Control - Internal" ON)
 option(SA_CUSTOM "Security Association - Custom" OFF)
+option(SA_CUSTOM_PATH "Custion Security Association Path" OFF)
 option(SA_INTERNAL "Security Association - Internal" ON)
 option(SA_MARIADB "Security Association - MariaDB" OFF)
 option(SUPPORT "Support" OFF)
@@ -46,6 +61,39 @@ OPTION(KMC_MDB_RH "KMC-MDB-RedHat-Integration-Testing" OFF) #Disabled by default
 OPTION(KMC_MDB_DB "KMC-MDB-Debian-Integration-Testing" OFF) #Disabled by default, enable with: -DKMC_MDB_DB=ON
 OPTION(KMC_CFFI_EXCLUDE "KMC-Exclude-Problematic-CFFI-Code" OFF) #Disabled by default, enable with: -DKMC_CFFI_EXCLUDE=ON
 
+
+#
+# Custom Module Paths
+#
+if(KEY_CUSTOM)
+    if(NOT DEFINED ${KEY_CUSTOM_PATH})
+        set(KEY_CUSTOM_PATH ${KEY_CUSTOM_PATH_DEFAULT})
+    endif()
+    message(STATUS "KEY_CUSTOM being utilized.  Path set to: ${KEY_CUSTOM_PATH}")
+endif()
+
+if(MC_CUSTOM)
+    if(NOT DEFINED ${KEY_CUSTOM_PATH})
+        set(MC_CUSTOM_PATH ${MC_CUSTOM_PATH_DEFAULT})
+    endif()
+    message(STATUS "MC_CUSTOM being utilized.  Path set to: ${MC_CUSTOM_PATH}")
+endif()
+
+if(SA_CUSTOM)
+    if(NOT DEFINED ${SA_CUSTOM_PATH})
+        set(SA_CUSTOM_PATH ${SA_CUSTOM_PATH_DEFAULT})
+    endif()
+    message(STATUS "SA_CUSTOM being utilized.  Path set to: ${SA_CUSTOM_PATH}")
+endif()
+
+if(CRYPTO_CUSTOM)
+    if(NOT DEFINED ${CRYPTO_CUSTOM_PATH})
+        set(CRYPTO_CUSTOM_PATH ${CRYPTO_CUSTOM_PATH_DEFAULT})
+    endif()
+    message(STATUS "CRYPTO_CUSTOM being utilized.  Path set to: ${CRYPTO_CUSTOM_PATH}")
+endif()
+
+
 #
 # Build Flag Logic
 #
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 48249225..26e32e0c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -19,6 +19,14 @@ include_directories(../include)
 
 aux_source_directory(core LIB_SRC_FILES)
 
+if(CRYPTO_CUSTOM)
+    aux_source_directory(CRYPTO_CUSTOM_PATH CRYPTO_FILES)
+    list(APPEND LIB_SRC_FILES ${CRYPTO_FILES})
+else()
+    aux_source_directory(crypto/custom_stub CRYPTO_FILES)
+    list(APPEND LIB_SRC_FILES ${CRYPTO_FILES})
+endif()
+
 if(CRYPTO_LIBGCRYPT)
     aux_source_directory(crypto/libgcrypt LIBGCRYPT_FILES)
     list(APPEND LIB_SRC_FILES ${LIBGCRYPT_FILES})
@@ -45,7 +53,7 @@ endif()
 
 if(KEY_CUSTOM)
     # Assumes CryptoLib is a Git submodule to project and custom directories and definitions exist at top level
-    aux_source_directory(../../key/custom KEY_CUSTOM_FILES)
+    aux_source_directory(KEY_CUSTOM_PATH KEY_CUSTOM_FILES)
     list(APPEND LIB_SRC_FILES ${KEY_CUSTOM_FILES})
 else()
     aux_source_directory(key/custom_stub KEY_CUSTOM_FILES)
@@ -70,7 +78,7 @@ endif()
 
 if(MC_CUSTOM)
     # Assumes CryptoLib is a Git submodule to project and custom directories and definitions exist at top level
-    aux_source_directory(../../mc/custom MC_CUSTOM_FILES)
+    aux_source_directory(MC_CUSTOM_PATH MC_CUSTOM_FILES)
     list(APPEND LIB_SRC_FILES ${MC_CUSTOM_FILES})
 else()
     aux_source_directory(mc/custom_stub MC_CUSTOM_FILES)
@@ -95,7 +103,7 @@ endif()
 
 if(SA_CUSTOM)
     # Assumes CryptoLib is a Git submodule to project and custom directories and definitions exist at top level
-    aux_source_directory(../../sa/custom SA_CUSTOM_FILES)
+    aux_source_directory(SA_CUSTOM_PATH SA_CUSTOM_FILES)
     list(APPEND LIB_SRC_FILES ${SA_CUSTOM_FILES})
 else()
     aux_source_directory(sa/custom_stub SA_CUSTOM_FILES)