--- ./CMakeLists.txt.orig
+++ ./CMakeLists.txt
@@ -81,24 +81,12 @@
   endif()
 endfunction(checkout_submodule)
 
-checkout_submodule(3rdparty/concurrentqueue)
-checkout_submodule(3rdparty/cxxopts)
-checkout_submodule(3rdparty/kissfft)
+find_package(cxxopts)
+find_package(kissfft)
 
-option(KISSFFT_PKGCONFIG "" OFF)
-option(KISSFFT_STATIC "" ON)
-option(KISSFFT_TEST "" OFF)
-option(KISSFFT_TOOLS "" OFF)
-option(KISSFFT_USE_ALLOCA "" OFF)
-add_subdirectory(3rdparty/kissfft)
-target_compile_options(kissfft
-  PRIVATE -w
-  )
+include_directories(/usr/include/kissfft)
 
 target_include_directories(signal-estimator SYSTEM
-  PRIVATE 3rdparty/concurrentqueue
-  PRIVATE 3rdparty/cxxopts/include
-  PRIVATE 3rdparty/kissfft
   PRIVATE src/cli
   )
 
@@ -106,7 +94,7 @@
 target_link_libraries(signal-estimator
   asound
   m
-  kissfft
+  kissfft-float
   ${CMAKE_THREAD_LIBS_INIT}
   )
 
@@ -167,7 +155,7 @@
     ${QWT_LIBRARY}
     Qt5::Core
     Qt5::Widgets
-    kissfft
+    kissfft-float
     )
 
   install(