link to system botan
--
diff --git a/libraries/botan/CMakeLists.txt b/libraries/botan/CMakeLists.txt
index 4836a38..97ad24a 100644
--- a/libraries/botan/CMakeLists.txt
+++ b/libraries/botan/CMakeLists.txt
@@ -18,7 +18,9 @@ target_link_libraries(botan PUBLIC Qt5::Core)
 target_include_directories(botan PUBLIC ${CMAKE_CURRENT_LIST_DIR})
 
 if(BUILD_WITH_SYSTEM_BOTAN)
-    find_package(Botan2 REQUIRED)
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(Botan2 REQUIRED botan-2 IMPORTED_TARGET)
+    add_library(Botan2::Botan2 ALIAS PkgConfig::Botan2)
     if(NOT TARGET Botan2::Botan2)
         message(FATAL_ERROR "Could not find system Botan 2 library using PkgConfig")
     endif()