diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 654bebd..5264bfc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,27 +17,16 @@ endif()
 # ==============================================================================
 # OpenMVG build options
 # ==============================================================================
-option(OpenMVG_BUILD_SHARED "Build OpenMVG shared libs" OFF)
-option(OpenMVG_BUILD_TESTS "Build OpenMVG tests" OFF)
-option(OpenMVG_BUILD_DOC "Build OpenMVG documentation" ON)
-option(OpenMVG_BUILD_EXAMPLES "Build OpenMVG samples applications." ON)
-option(OpenMVG_BUILD_OPENGL_EXAMPLES "Build OpenMVG openGL examples" OFF)
-option(OpenMVG_BUILD_SOFTWARES "Build OpenMVG softwares" ON)
-option(OpenMVG_BUILD_GUI_SOFTWARES "Build OpenMVG GUI softwares (QT5)" ON)
-option(OpenMVG_BUILD_COVERAGE "Enable code coverage generation (gcc only)" OFF)
-option(OpenMVG_USE_OPENMP "Enable OpenMP parallelization" ON)
 # ==============================================================================
 # Opencv is not used by openMVG but some samples show how to use openCV
 #  and openMVG simultaneously
 # ==============================================================================
-option(OpenMVG_USE_OPENCV "Build or not opencv+openMVG samples programs" OFF)
 
 # ==============================================================================
 # Since OpenCV 3, SIFT is no longer in the default modules. See
 # https://github.com/itseez/opencv_contrib for more informations.
 # Enable this to be able to use OpenCV SIFT in main_ComputeFeatures_OpenCV.
 # ==============================================================================
-option(OpenMVG_USE_OCVSIFT "Add or not OpenCV SIFT in available features" OFF)
 
 # ==============================================================================
 # OpenMVG version
@@ -85,15 +74,6 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   register_definitions(-DOPENMVG_STD_UNORDERED_MAP)
 endif()
 
-# ==============================================================================
-# Check that submodule have been initialized and updated
-# ==============================================================================
-if (NOT EXISTS ${PROJECT_SOURCE_DIR}/dependencies/cereal/include)
-  message(FATAL_ERROR
-    "\n submodule(s) are missing, please update your repository:\n"
-    "  > git submodule update -i\n")
-endif()
-
 # ==============================================================================
 # Additional cmake find modules
 # ==============================================================================
@@ -129,7 +109,6 @@ if (OpenMVG_USE_OPENMP)
   find_package(OpenMP)
   if (OPENMP_FOUND)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
-    option(OpenMVG_USE_OPENMP "Use OpenMP for parallelization" ON)
     register_definitions(-DOPENMVG_USE_OPENMP)
     if (NOT MSVC)
       if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
@@ -140,11 +119,6 @@ if (OpenMVG_USE_OPENMP)
       endif()
     endif (NOT MSVC)
   endif (OPENMP_FOUND)
-else (OpenMVG_USE_OPENMP)
-    option(OpenMVG_USE_OPENMP "Use OpenMP for parallelization" OFF)
-    include(UpdateCacheVariable)
-    UPDATE_CACHE_VARIABLE(OpenMVG_USE_OPENMP OFF)
-    remove_definitions(-DOPENMVG_USE_OPENMP)
 endif (OpenMVG_USE_OPENMP)
 
 # ==============================================================================
@@ -183,14 +157,6 @@ if (OpenMVG_BUILD_OPENGL_EXAMPLES)
   set_property(TARGET glfw PROPERTY FOLDER OpenMVG/3rdParty/glfw)
 endif (OpenMVG_BUILD_OPENGL_EXAMPLES)
 
-# Dependencies install rules
-install(
-  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/
-  DESTINATION include/openMVG_dependencies
-  COMPONENT headers
-  FILES_MATCHING PATTERN "*.hpp" PATTERN "*.h"
-)
-
 # ==============================================================================
 # --END-- SUBMODULE CONFIGURATION
 # ==============================================================================
@@ -226,14 +192,8 @@ ENDMACRO(UNIT_TEST)
 # - external by default
 # - internal if cereal not found
 # ==============================================================================
-find_package(cereal QUIET CONFIG)
-if (NOT cereal_FOUND)
-  set(CEREAL_INCLUDE_DIRS
-    ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/cereal/include)
-  set(OpenMVG_USE_INTERNAL_CEREAL ON)
-else()
-  get_target_property(CEREAL_INCLUDE_DIRS cereal INTERFACE_INCLUDE_DIRECTORIES)
-endif()
+find_package(cereal REQUIRED CONFIG)
+get_target_property(CEREAL_INCLUDE_DIRS cereal INTERFACE_INCLUDE_DIRECTORIES)
 
 # ==============================================================================
 # Eigen
@@ -242,14 +202,8 @@ endif()
 # - external if EIGEN_INCLUDE_DIR_HINTS is defined
 # - internal if Eigen not found
 # ==============================================================================
-find_package(eigen3 QUIET)
-if (NOT eigen3_FOUND)
-  set(EIGEN_INCLUDE_DIR_HINTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/eigen)
-  set(OpenMVG_USE_INTERNAL_EIGEN ON)
-  find_package(Eigen QUIET)
-else()
-  set(EIGEN_INCLUDE_DIRS ${EIGEN3_INCLUDE_DIR})
-endif()
+find_package(eigen3 REQUIRED)
+set(EIGEN_INCLUDE_DIRS ${EIGEN3_INCLUDE_DIR})
 
 # ==============================================================================
 # Ceres
@@ -257,17 +211,7 @@ endif()
 # - external by default if CERES_DIR_HINTS or find_package found a valid Ceres
 # - internal if ceres not found (ceres-solver+cxsparse+miniglog)
 # ==============================================================================
-find_package(Ceres QUIET HINTS ${CERES_DIR_HINTS})
-if (NOT Ceres_FOUND)
-  set(OpenMVG_USE_INTERNAL_CERES ON)
-  set(CERES_INCLUDE_DIRS
-    ${CMAKE_CURRENT_SOURCE_DIR}/third_party/ceres-solver/include
-    ${CMAKE_CURRENT_SOURCE_DIR}/third_party/ceres-solver/internal/ceres/miniglog
-    ${PROJECT_BINARY_DIR}/third_party/ceres-solver/config)
-    FILE(READ "${CMAKE_CURRENT_SOURCE_DIR}/third_party/ceres-solver/VERSION" CERES_CONFIG)
-    STRING(REGEX REPLACE "version ([0-9.]+).*" "\\1" CERES_VERSION ${CERES_CONFIG})
-  set(CERES_LIBRARIES openMVG_ceres)
-endif()
+find_package(Ceres REQUIRED)
 
 # ==============================================================================
 # Flann
@@ -275,14 +219,7 @@ endif()
 # - internal by default (flann),
 # - external if FLANN_INCLUDE_DIR_HINTS and a valid Flann setup is found
 # ==============================================================================
-if (NOT DEFINED FLANN_INCLUDE_DIR_HINTS)
-  set(FLANN_INCLUDE_DIR_HINTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/flann/src/cpp)
-  set(OpenMVG_USE_INTERNAL_FLANN ON)
-endif()
-find_package(Flann QUIET)
-if (NOT FLANN_FOUND OR OpenMVG_USE_INTERNAL_FLANN)
-  set(FLANN_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/flann/src/cpp)
-endif()
+find_package(flann REQUIRED)
 
 # ==============================================================================
 # CoinUtils
@@ -290,15 +227,7 @@ endif()
 # - internal by default (CoinUtils),
 # - external if COINUTILS_INCLUDE_DIR_HINTS and a valid CoinUtils setup is found
 # ==============================================================================
-if (NOT DEFINED COINUTILS_INCLUDE_DIR_HINTS)
-  set(COINUTILS_INCLUDE_DIR_HINTS ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/CoinUtils/src/)
-  set(OpenMVG_USE_INTERNAL_COINUTILS ON)
-endif()
-find_package(CoinUtils QUIET)
-if (NOT COINUTILS_FOUND OR OpenMVG_USE_INTERNAL_COINUTILS)
-  set(COINUTILS_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/CoinUtils/src/)
-  set(COINUTILS_LIBRARY lib_CoinUtils)
-endif()
+find_package(CoinUtils REQUIRED)
 
 ## ==============================================================================
 ## Clp
@@ -306,17 +235,7 @@ endif()
 ## - internal by default (Clp),
 ## - external if CLP_INCLUDE_DIR_HINTS and a valid Clp setup is found
 ## ==============================================================================
-if (NOT DEFINED CLP_INCLUDE_DIR_HINTS)
-  set(CLP_INCLUDE_DIR_HINTS ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/Clp/src/)
-  set(OpenMVG_USE_INTERNAL_CLP ON)
-endif()
-find_package(Clp QUIET)
-if (NOT CLP_FOUND OR OpenMVG_USE_INTERNAL_CLP)
-  set(CLP_INCLUDE_DIRS
-     ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/Clp/src/
-     ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/Clp/src/OsiClp/)
-  set(CLP_LIBRARIES lib_clp lib_OsiClpSolver)
-endif()
+find_package(Clp REQUIRED)
 
 # ==============================================================================
 # Osi
@@ -324,15 +243,7 @@ endif()
 # - internal by default (Osi),
 # - external if OSI_INCLUDE_DIR_HINTS and a valid Osi setup is found
 # ==============================================================================
-if (NOT DEFINED OSI_INCLUDE_DIR_HINTS)
-  set(OSI_INCLUDE_DIR_HINTS ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/Osi/src/)
-  set(OpenMVG_USE_INTERNAL_OSI ON)
-endif()
-find_package(Osi QUIET)
-if (NOT OSI_FOUND OR OpenMVG_USE_INTERNAL_OSI)
-  set(OSI_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/dependencies/osi_clp/Osi/src/Osi/)
-  set(OSI_LIBRARY lib_Osi)
-endif()
+find_package(Osi REQUIRED)
 
 # ==============================================================================
 # Internal CLP/OSI/COINUTILS libraries:
@@ -351,17 +262,7 @@ endif()
 # - internal by default (Lemon),
 # - external if LEMON_INCLUDE_DIR_HINTS and a valid Lemon setup is found
 # ==============================================================================
-if (NOT DEFINED LEMON_INCLUDE_DIR_HINTS)
-  set(LEMON_INCLUDE_DIR_HINTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/lemon)
-  set(OpenMVG_USE_INTERNAL_LEMON ON)
-endif()
-find_package(Lemon QUIET)
-if (NOT LEMON_FOUND OR OpenMVG_USE_INTERNAL_LEMON)
-  set(LEMON_INCLUDE_DIRS
-    ${CMAKE_CURRENT_SOURCE_DIR}/third_party/lemon
-    ${PROJECT_BINARY_DIR}/third_party/lemon)
-  set(LEMON_LIBRARY openMVG_lemon)
-endif()
+find_package(Lemon REQUIRED)
 
 # ==============================================================================
 # OpenCV
@@ -369,12 +270,7 @@ endif()
 # - only external and enabled only if OpenMVG_USE_OPENCV is set to ON
 # ==============================================================================
 if (OpenMVG_USE_OPENCV)
-  find_package( OpenCV QUIET )
-  if (NOT OpenCV_FOUND OR OpenCV_VERSION VERSION_LESS "3.0.0")
-    message(STATUS "OpenCV was not found (note that OpenCV version >= 3.0.0 is required). -> Disabling OpenCV support.")
-    UPDATE_CACHE_VARIABLE(OpenMVG_USE_OPENCV OFF)
-    UPDATE_CACHE_VARIABLE(OpenMVG_USE_OCVSIFT OFF)
-  endif()
+  find_package( OpenCV REQUIRED )
 endif()
 
 
@@ -469,67 +365,67 @@ message("** Use OpenCV SIFT features: " ${OpenMVG_USE_OCVSIFT})
 
 message("\n")
 
-if (DEFINED OpenMVG_USE_INTERNAL_CEREAL)
+if (OpenMVG_USE_INTERNAL_CEREAL)
   message(STATUS "CEREAL: (internal)")
 else()
   message(STATUS "CEREAL: (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_EIGEN)
+if (OpenMVG_USE_INTERNAL_EIGEN)
   message(STATUS "EIGEN: " ${EIGEN_VERSION} " (internal)")
 else()
   message(STATUS "EIGEN: " ${EIGEN_VERSION} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_CERES)
+if (OpenMVG_USE_INTERNAL_CERES)
   message(STATUS "CERES: " ${CERES_VERSION} " (internal)")
 else()
   message(STATUS "CERES: " ${CERES_VERSION} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_FLANN)
+if (OpenMVG_USE_INTERNAL_FLANN)
   message(STATUS "FLANN: " ${FLANN_VERSION} " (internal)")
 else()
   message(STATUS "FLANN: " ${FLANN_VERSION} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_TIFF)
+if (OpenMVG_USE_INTERNAL_TIFF)
   message(STATUS "LIBTIFF: " ${TIFF_VERSION_STRING} " (internal)")
 else()
   message(STATUS "LIBTIFF: " ${TIFF_VERSION_STRING} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_PNG)
+if (OpenMVG_USE_INTERNAL_PNG)
   message(STATUS "LIBPNG: " ${PNG_VERSION_STRING} " (internal)")
 else()
   message(STATUS "LIBPNG: " ${PNG_VERSION_STRING} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_JPEG)
+if (OpenMVG_USE_INTERNAL_JPEG)
   message(STATUS "LIBJPEG (internal)")
 else()
   message(STATUS "LIBJPEG (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_CLP)
+if (OpenMVG_USE_INTERNAL_CLP)
   message(STATUS "CLP: " ${CLP_VERSION} " (internal)")
 else()
   message(STATUS "CLP: " ${CLP_VERSION} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_COINUTILS)
+if (OpenMVG_USE_INTERNAL_COINUTILS)
   message(STATUS "COINUTILS: " ${COINUTILS_VERSION} " (internal)")
 else()
   message(STATUS "COINUTILS: " ${COINUTILS_VERSION} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_OSI)
+if (OpenMVG_USE_INTERNAL_OSI)
   message(STATUS "OSI: " ${OSI_VERSION} " (internal)")
 else()
   message(STATUS "OSI: " ${OSI_VERSION} " (external)")
 endif()
 
-if (DEFINED OpenMVG_USE_INTERNAL_LEMON)
+if (OpenMVG_USE_INTERNAL_LEMON)
   message(STATUS "LEMON: " ${LEMON_VERSION} " (internal)")
 else()
   message(STATUS "LEMON: " ${LEMON_VERSION} " (external)")
diff --git a/src/cmakeFindModules/FindClp.cmake b/src/cmakeFindModules/FindClp.cmake
index c997b87..74c3aae 100644
--- a/src/cmakeFindModules/FindClp.cmake
+++ b/src/cmakeFindModules/FindClp.cmake
@@ -51,8 +51,8 @@ IF(EXISTS "${CLP_DIR}" AND NOT "${CLP_DIR}" STREQUAL "")
         SET(CLP_INCLUDE_DIR ${CLP_DIR})
 
         FIND_LIBRARY(CLP_LIBRARY NAMES Clp)
-        FIND_LIBRARY(CLPSOLVER_LIBRARY NAMES ClpSolver)
-        FIND_LIBRARY(OSICLP_LIBRARY NAMES OsiClp)
+        FIND_LIBRARY(CLPSOLVER_LIBRARY NAMES ClpSolver Clp)
+        FIND_LIBRARY(OSICLP_LIBRARY NAMES OsiClp Clp)
 
         # locate Clp libraries
         IF(DEFINED CLP_LIBRARY AND DEFINED CLPSOLVER_LIBRARY AND DEFINED OSICLP_LIBRARY)
diff --git a/src/openMVG/linearProgramming/CMakeLists.txt b/src/openMVG/linearProgramming/CMakeLists.txt
index cc5212f..acc57dd 100644
--- a/src/openMVG/linearProgramming/CMakeLists.txt
+++ b/src/openMVG/linearProgramming/CMakeLists.txt
@@ -15,16 +15,12 @@ target_link_libraries(openMVG_linearProgramming
   PUBLIC
     openMVG_numeric
   PRIVATE
-    ${CLP_LIBRARIES}     # clp + solver wrapper
-    ${COINUTILS_LIBRARY} # container tools
-    ${OSI_LIBRARY}       # generic LP
+    Coin::Clp       # clp + solver wrapper
+    Coin::CoinUtils # container tools
+    Coin::Osi       # generic LP
 )
 
 target_include_directories(openMVG_linearProgramming
-  PRIVATE
-    ${CLP_INCLUDE_DIRS}
-    ${COINUTILS_INCLUDE_DIRS}
-    ${OSI_INCLUDE_DIRS}
   PUBLIC
     $<INSTALL_INTERFACE:include>
 )
diff --git a/src/openMVG/matching/CMakeLists.txt b/src/openMVG/matching/CMakeLists.txt
index 80b1fe6..a091b47 100644
--- a/src/openMVG/matching/CMakeLists.txt
+++ b/src/openMVG/matching/CMakeLists.txt
@@ -18,6 +18,7 @@ list(REMOVE_ITEM matching_files_cpp ${REMOVEFILESUNITTEST})
 
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
+find_package(flann REQUIRED)
 
 set_source_files_properties(${matching_files_cpp} PROPERTIES LANGUAGE CXX)
 add_library(openMVG_matching
@@ -38,10 +39,10 @@ target_link_libraries(openMVG_matching
     openMVG_features
     Threads::Threads
 )
-if (NOT DEFINED OpenMVG_USE_INTERNAL_FLANN)
+if (NOT OpenMVG_USE_INTERNAL_FLANN)
 target_link_libraries(openMVG_matching
   PUBLIC
-    ${FLANN_LIBRARIES}
+    flann::flann
 )
 endif()
 set_target_properties(openMVG_matching PROPERTIES SOVERSION ${OPENMVG_VERSION_MAJOR} VERSION "${OPENMVG_VERSION_MAJOR}.${OPENMVG_VERSION_MINOR}")
diff --git a/src/third_party/CMakeLists.txt b/src/third_party/CMakeLists.txt
index 816a941..f0b7145 100644
--- a/src/third_party/CMakeLists.txt
+++ b/src/third_party/CMakeLists.txt
@@ -18,7 +18,7 @@ add_subdirectory(stlplus3)
 set(STLPLUS_LIBRARY openMVG_stlplus PARENT_SCOPE)
 
 # Add graph library
-if(DEFINED OpenMVG_USE_INTERNAL_LEMON)
+if(OpenMVG_USE_INTERNAL_LEMON)
   add_subdirectory(lemon)
   set_property(TARGET openMVG_lemon PROPERTY FOLDER OpenMVG/3rdParty/lemon)
   set_property(TARGET check PROPERTY FOLDER OpenMVG/3rdParty/lemon)
@@ -68,7 +68,7 @@ endif (NOT TIFF_FOUND)
 add_subdirectory(vectorGraphics)
 
 # Add ceres-solver (A Nonlinear Least Squares Minimizer)
-if (DEFINED OpenMVG_USE_INTERNAL_CERES)
+if (OpenMVG_USE_INTERNAL_CERES)
   add_subdirectory(cxsparse)
   add_subdirectory(ceres-solver)
   set_property(TARGET openMVG_cxsparse PROPERTY FOLDER OpenMVG/3rdParty/ceres)
@@ -76,7 +76,7 @@ if (DEFINED OpenMVG_USE_INTERNAL_CERES)
 endif()
 
 # Add an Approximate Nearest Neighbor library
-if (DEFINED OpenMVG_USE_INTERNAL_FLANN)
+if (OpenMVG_USE_INTERNAL_FLANN)
   set(FLANN_INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/include/openMVG/third_party/flann/src/cpp)
   add_subdirectory(flann)
 endif()
@@ -90,7 +90,7 @@ add_subdirectory(fast)
 ##
 # Install Header only libraries if necessary
 ##
-if (DEFINED OpenMVG_USE_INTERNAL_EIGEN)
+if (OpenMVG_USE_INTERNAL_EIGEN)
   #Configure Eigen install
   set(EIGEN_INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/include/openMVG/third_party/eigen)
   add_subdirectory(eigen)