diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb3766fd7..9cfdace58 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,6 +56,7 @@ option(YOSYS_WITHOUT_EDITLINE "Disable editline integration" OFF)
 option(YOSYS_WITHOUT_SLANG "Disable Slang integration" OFF)
 option(YOSYS_WITHOUT_TCL "Disable Tcl integration" OFF)
 option(YOSYS_WITH_PYTHON "Enable Python integration" OFF)
+option(YOSYS_WITH_PKG_DEPS "Disable bundled/vendored dependencies" OFF)
 
 set(YOSYS_VERIFIC_DIR "" CACHE FILEPATH "Path to the Verific source code (empty to disable)")
 set(YOSYS_VERIFIC_COMPONENTS "" CACHE STRING
diff --git a/libs/CMakeLists.txt b/libs/CMakeLists.txt
index 5ea08ef9d..fd82239ec 100644
--- a/libs/CMakeLists.txt
+++ b/libs/CMakeLists.txt
@@ -7,50 +7,52 @@ add_subdirectory(json11)
 add_subdirectory(minisat)
 add_subdirectory(sha1)
 add_subdirectory(subcircuit)
-block()
-    set(BUILD_SHARED_LIBS OFF)
-    include(FetchContent)
-    set(FETCHCONTENT_FULLY_DISCONNECTED ON)
+if (NOT YOSYS_WITH_PKG_DEPS)
+    block()
+        set(BUILD_SHARED_LIBS OFF)
+        include(FetchContent)
+        set(FETCHCONTENT_FULLY_DISCONNECTED ON)
 
-    option(FMT_INSTALL OFF)
-    FetchContent_Declare(
-        fmt
-        EXCLUDE_FROM_ALL
-        SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/fmt
-    )
-    FetchContent_MakeAvailable(fmt)
+        option(FMT_INSTALL OFF)
+        FetchContent_Declare(
+            fmt
+            EXCLUDE_FROM_ALL
+            SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/fmt
+        )
+        FetchContent_MakeAvailable(fmt)
 
-    FetchContent_Declare(
-        tomlplusplus
-        EXCLUDE_FROM_ALL
-        SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/tomlplusplus
-    )
-    FetchContent_MakeAvailable(tomlplusplus)
+        FetchContent_Declare(
+            tomlplusplus
+            EXCLUDE_FROM_ALL
+            SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/tomlplusplus
+        )
+        FetchContent_MakeAvailable(tomlplusplus)
 
-    FetchContent_Declare(
-        boost_regex
-        EXCLUDE_FROM_ALL
-        SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/boost_regex
-        SOURCE_SUBDIR _no_build_
-    )
-    FetchContent_MakeAvailable(boost_regex)
+        FetchContent_Declare(
+            boost_regex
+            EXCLUDE_FROM_ALL
+            SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/boost_regex
+            SOURCE_SUBDIR _no_build_
+        )
+        FetchContent_MakeAvailable(boost_regex)
 
-    if (NOT YOSYS_WITHOUT_SLANG)
-        set(SLANG_USE_MIMALLOC OFF)
-        add_subdirectory(slang)
-        # Headers autodetect based on <boost/config.hpp> but when version
-        # does exist but does not match requirements it becomes problematic
-        if(NOT Boost_FOUND)
-            target_compile_definitions(slang_slang PRIVATE BOOST_REGEX_STANDALONE)
+        if (NOT YOSYS_WITHOUT_SLANG)
+            set(SLANG_USE_MIMALLOC OFF)
+            add_subdirectory(slang)
+            # Headers autodetect based on <boost/config.hpp> but when version
+            # does exist but does not match requirements it becomes problematic
+            if(NOT Boost_FOUND)
+                target_compile_definitions(slang_slang PRIVATE BOOST_REGEX_STANDALONE)
+            endif()
+            if (SLANG_INCLUDE_TOOLS)
+                # Temporary to prevent build issues
+                set_target_properties(slang_tidy_obj_lib PROPERTIES YOSYS_IS_ABC ON)
+
+                install(TARGETS slang_driver RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+                install(TARGETS slang_hier RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+                install(TARGETS slang_reflect RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+                install(TARGETS slang_tidy RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+            endif()
         endif()
-        if (SLANG_INCLUDE_TOOLS)
-            # Temporary to prevent build issues
-            set_target_properties(slang_tidy_obj_lib PROPERTIES YOSYS_IS_ABC ON)
-
-            install(TARGETS slang_driver RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-            install(TARGETS slang_hier RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-            install(TARGETS slang_reflect RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-            install(TARGETS slang_tidy RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-        endif()
-    endif()
-endblock()
+    endblock()
+endif()