2 files changed, 13 insertions, 3 deletions
diff --git a/ports/boost-system/portfile.cmake b/ports/boost-system/portfile.cmake
index bf6f9ed98..e26a02be7 100644
--- a/ports/boost-system/portfile.cmake
+++ b/ports/boost-system/portfile.cmake
@@ -10,7 +10,10 @@ vcpkg_from_github(
     HEAD_REF master
 )
 
-include(${CURRENT_INSTALLED_DIR}/share/boost-build/boost-modular-build.cmake)
+if(NOT DEFINED CURRENT_HOST_INSTALLED_DIR)
+    message(FATAL_ERROR "boost-system requires a newer version of vcpkg in order to build.")
+endif()
+include(${CURRENT_HOST_INSTALLED_DIR}/share/boost-build/boost-modular-build.cmake)
 boost_modular_build(SOURCE_PATH ${SOURCE_PATH})
 include(${CURRENT_INSTALLED_DIR}/share/boost-vcpkg-helpers/boost-modular-headers.cmake)
 boost_modular_headers(SOURCE_PATH ${SOURCE_PATH})
diff --git a/ports/boost-system/vcpkg.json b/ports/boost-system/vcpkg.json
index df0fe9d46..f311f0c8b 100644
--- a/ports/boost-system/vcpkg.json
+++ b/ports/boost-system/vcpkg.json
@@ -1,13 +1,20 @@
 {
   "name": "boost-system",
   "version-string": "1.75.0",
+  "port-version": 1,
   "description": "Boost system module",
   "homepage": "https://github.com/boostorg/system",
   "dependencies": [
-    "boost-build",
+    {
+      "name": "boost-build",
+      "host": true
+    },
     "boost-config",
     "boost-integer",
-    "boost-modular-build-helper",
+    {
+      "name": "boost-modular-build-helper",
+      "host": true
+    },
     "boost-vcpkg-helpers",
     "boost-winapi"
   ]