Update CURL install directory

cmake/modules/BuildCURL.cmake

@@ -1,33 +1,35 @@
+set(CURL_INSTALL_DIR ${CMAKE_THIRD_PARTY_DIR})
+
 if(WIN32)
   ExternalProject_Add(
     curl
     GIT_REPOSITORY https://github.com/curl/curl.git
     GIT_TAG curl-7_59_0
-    CMAKE_ARGS -DBUILD_TESTING=OFF -DHTTP_ONLY=ON
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${CURL_INSTALL_DIR} -DBUILD_TESTING=OFF -DHTTP_ONLY=ON
+    INSTALL_DIR ${CURL_INSTALL_DIR}
   )
 else()
   ExternalProject_Add(
     curl
     GIT_REPOSITORY https://github.com/curl/curl.git
     GIT_TAG curl-7_59_0
-    CMAKE_ARGS -DBUILD_TESTING=OFF -DHTTP_ONLY=ON
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${CURL_INSTALL_DIR} -DBUILD_TESTING=OFF -DHTTP_ONLY=ON
+    INSTALL_DIR ${CURL_INSTALL_DIR}
   )
 endif()
 
 ExternalProject_Get_Property(
   curl
-  binary_dir
+  install_dir
 )
 
-set(CURL_INCLUDE_DIRS "${source_dir}/include")
+set(CURL_INCLUDE_DIRS "${install_dir}/include")
 
 if(WIN32)
-  set(CURL_LIBRARIES "${binary_dir}/${CMAKE_BUILD_TYPE}/libcurl.lib")
-  set(CURL_INSTALL_LIBS "${binary_dir}/${CMAKE_BUILD_TYPE}/libcurl.dll")
+  set(CURL_LIBRARIES "${install_dir}/${CMAKE_BUILD_TYPE}/libcurl.lib")
+  set(CURL_INSTALL_LIBS "${install_dir}/${CMAKE_BUILD_TYPE}/libcurl.dll")
 else()
-  set(CURL_LIBRARIES "${binary_dir}/libcurl.so")
-  set(CURL_INSTALL_LIBS "${binary_dir}/libcurl.so")
+  set(CURL_LIBRARIES "${install_dir}/lib/libcurl.so")
+  set(CURL_INSTALL_LIBS "${install_dir}/lib/libcurl.so")
 endif()
 
-install_external_library(curl ${CURL_INSTALL_LIBS})
-