chore(build): improve as dependency (#206)

Author: sleepdefic1t

cmake/External.cmake

@@ -4,7 +4,7 @@
 # ------------------------------------------------------------------------------
 
 # Copy the configuration
-configure_file(${CMAKE_SOURCE_DIR}/cmake/extern/ArduinoJson.txt.in
+configure_file(${CMAKE_INSTALL_PREFIX}/cmake/extern/ArduinoJson.txt.in
                ${EXTERNAL_LIBRARY_DIR}/arduinojson/CMakeLists.txt)
 
 # Configure the Cmake build
@@ -38,7 +38,7 @@ include_directories(${ARDUINO_JSON_SOURCE_DIR})
 # ------------------------------------------------------------------------------
 
 # Copy the configuration
-configure_file(${CMAKE_SOURCE_DIR}/cmake/extern/BCL.txt.in
+configure_file(${CMAKE_INSTALL_PREFIX}/cmake/extern/BCL.txt.in
                ${EXTERNAL_LIBRARY_DIR}/bcl/CMakeLists.txt)
 
 # Configure the Cmake build
@@ -81,7 +81,7 @@ include_directories(${EXTERNAL_LIBRARY_DIR}/bcl/src/src)
 # ------------------------------------------------------------------------------
 
 # Copy the configuration
-configure_file(${CMAKE_SOURCE_DIR}/cmake/extern/BIP66.txt.in
+configure_file(${CMAKE_INSTALL_PREFIX}/cmake/extern/BIP66.txt.in
                ${EXTERNAL_LIBRARY_DIR}/bip66/CMakeLists.txt)
 
 # Configure the Cmake build
@@ -115,7 +115,7 @@ include_directories(${EXTERNAL_LIBRARY_DIR}/bip66/src/)
 # ------------------------------------------------------------------------------
 
 # Copy the configuration
-configure_file(${CMAKE_SOURCE_DIR}/cmake/extern/uECC.txt.in
+configure_file(${CMAKE_INSTALL_PREFIX}/cmake/extern/uECC.txt.in
                ${EXTERNAL_LIBRARY_DIR}/uecc/CMakeLists.txt)
 
 # Configure the Cmake build
@@ -158,4 +158,8 @@ set(EXTERNAL_LIBRARY_SOURCE
     ${UECC_SOURCE}
     CACHE INTERNAL "External Lib Binary Files")
 
+set(EXTERNAL_LIBRARY_INCLUDE
+    ${ARDUINO_JSON_SOURCE_DIR}
+    CACHE INTERNAL "External Lib Include Dirs")
+
 # ------------------------------------------------------------------------------

src/CMakeLists.txt

@@ -7,7 +7,7 @@ project(ark_cpp_crypto C CXX)
 # External Libraries
 # ------------------------------------------------------------------------------
 
-include(${CMAKE_SOURCE_DIR}/cmake/External.cmake)
+include(${CMAKE_INSTALL_PREFIX}/cmake/External.cmake)
 
 # ------------------------------------------------------------------------------
 
@@ -128,6 +128,7 @@ add_library(${PROJECT_NAME} STATIC
 # ------------------------------------------------------------------------------
 
 set(ARK_CPP_CRYPTO_INCLUDE_DIRS
+    ${EXTERNAL_LIBRARY_INCLUDE}
     ${PROJECT_SOURCE_DIR}
     ${PROJECT_SOURCE_DIR}/include/cpp-crypto
     ${PROJECT_SOURCE_DIR}/lib/