diff --git a/CMakeLists.txt b/CMakeLists.txt
index 708dd22..287ac51 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,12 @@ cmake_minimum_required(VERSION 3.21)
 
 project(libweaver VERSION 1.0 LANGUAGES CXX)
 
-option(LIBWEAVER_BUILD_APP "Enable building Qt app" ON)
+set(LIBWEAVER_BUILD_APP_DEFAULT ON)
+if(DOS OR EMSCRIPTEN)
+    set(LIBWEAVER_BUILD_APP_DEFAULT OFF)
+endif()
+
+option(LIBWEAVER_BUILD_APP "Enable building Qt app" ${LIBWEAVER_BUILD_APP_DEFAULT})
 option(LIBWEAVER_INSTALL "Enable libweaver install targets" "${PROJECT_IS_TOP_LEVEL}")
 
 include(CMakePackageConfigHelpers)
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index b62ddd4..1dc15c5 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -19,7 +19,12 @@ set(LIBWEAVER_SOURCES
   sitypes.cpp
 )
 
-add_library(libweaver SHARED
+set(MAYBE_SHARED SHARED)
+if(DOS OR EMSCRIPTEN)
+    set(MAYBE_SHARED)
+endif()
+
+add_library(libweaver ${MAYBE_SHARED}
   ${LIBWEAVER_SOURCES}
   ${LIBWEAVER_HEADERS}
 )