diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6879c4c..aa4167a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -324,13 +324,18 @@ else()
   if (TARGET flann::flann)
     set(FLANN_LIBRARIES "flann::flann;flann::flann_cpp")
   else()
-    find_package(Flann QUIET)
+    set(FLANN_LIBRARIES "flann::flann_s;flann::flann_cpp_s")
   endif()
+  set(FLANN_FOUND TRUE)
 endif()
 if (NOT FLANN_FOUND OR OpenMVG_USE_INTERNAL_FLANN)
   set(FLANN_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/flann/src/cpp)
 endif()
 
+# Used together in openMVG/LinearProgramming
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(OSI_CLP_COIN  osi-clp clp osi coinutils  REQUIRED)
+if(0)
 # ==============================================================================
 # CoinUtils
 # ==============================================================================
@@ -391,6 +396,7 @@ if (OpenMVG_USE_INTERNAL_OSI AND OpenMVG_USE_INTERNAL_CLP AND OpenMVG_USE_INTERN
   set_property(TARGET lib_Osi PROPERTY FOLDER OpenMVG/3rdParty/lib_Osi)
   set_property(TARGET lib_OsiClpSolver PROPERTY FOLDER OpenMVG/3rdParty/lib_OsiClpSolver)
 endif()
+endif()
 
 # ==============================================================================
 # Lemon
@@ -402,7 +408,7 @@ 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)
+find_package(LEMON REQUIRED)
 if (NOT LEMON_FOUND OR OpenMVG_USE_INTERNAL_LEMON)
   set(LEMON_INCLUDE_DIRS
     ${CMAKE_CURRENT_SOURCE_DIR}/third_party/lemon
diff --git a/src/cmakeFindModules/OpenMVGConfig.cmake.in b/src/cmakeFindModules/OpenMVGConfig.cmake.in
index 5a788b5..7a0afdb 100644
--- a/src/cmakeFindModules/OpenMVGConfig.cmake.in
+++ b/src/cmakeFindModules/OpenMVGConfig.cmake.in
@@ -61,7 +61,7 @@ set(CMAKE_MODULE_PATH ${CURRENT_CONFIG_INSTALL_DIR})
 
 # Build the absolute root install directory as a relative path
 get_filename_component(CURRENT_ROOT_INSTALL_DIR
-  ${CMAKE_MODULE_PATH}/../../../ ABSOLUTE)
+  "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE)
 if (NOT EXISTS ${CURRENT_ROOT_INSTALL_DIR})
   OPENMVG_REPORT_NOT_FOUND(
     "OpenMVG install root: ${CURRENT_ROOT_INSTALL_DIR}, "
@@ -88,11 +88,14 @@ set(OpenMVG_USE_OPENMP "@OpenMVG_USE_OPENMP@")
 
 # Find transitive dependencies if required
 include(CMakeFindDependencyMacro)
+find_dependency(flann CONFIG)
+find_dependency(Ceres CONFIG)
+find_dependency(vlfeat CONFIG)
 if (OpenMVG_USE_OPENMP)
-  find_dependency(OpenMP REQUIRED)
+  find_dependency(OpenMP)
 endif()
 if (NOT OpenMVG_USE_INTERNAL_CEREAL)
-  find_dependency(cereal REQUIRED)
+  find_dependency(cereal CONFIG)
 endif()
 
 # Import exported OpenMVG targets
diff --git a/src/nonFree/sift/CMakeLists.txt b/src/nonFree/sift/CMakeLists.txt
index 402a2d8..b2912ea 100644
--- a/src/nonFree/sift/CMakeLists.txt
+++ b/src/nonFree/sift/CMakeLists.txt
@@ -25,7 +25,9 @@ set(FEATS
   vl/mathop.c
   vl/random.c)
 set_source_files_properties(${FEATS} PROPERTIES LANGUAGE C)
-add_library(vlsift ${FEATS})
+find_package(vlfeat CONFIG REQUIRED)
+add_library(vlsift INTERFACE)
+target_link_libraries(vlsift INTERFACE unofficial::vlfeat::vl)
 install(TARGETS vlsift DESTINATION lib EXPORT openMVG-targets)
 set_property(TARGET vlsift PROPERTY FOLDER OpenMVG/nonFree)
 install(
diff --git a/src/nonFree/sift/SIFT_describer.hpp b/src/nonFree/sift/SIFT_describer.hpp
index cd800b0..9586d9b 100644
--- a/src/nonFree/sift/SIFT_describer.hpp
+++ b/src/nonFree/sift/SIFT_describer.hpp
@@ -18,7 +18,7 @@
 #include <numeric>
 
 extern "C" {
-#include "nonFree/sift/vl/sift.h"
+#include <vl/sift.h>
 }
 
 namespace openMVG {
diff --git a/src/openMVG/exif/sensor_width_database/CMakeLists.txt b/src/openMVG/exif/sensor_width_database/CMakeLists.txt
index 33d9f16..58b4761 100644
--- a/src/openMVG/exif/sensor_width_database/CMakeLists.txt
+++ b/src/openMVG/exif/sensor_width_database/CMakeLists.txt
@@ -2,4 +2,4 @@
 UNIT_TEST(openMVG ParseDatabase "openMVG_testing;${STLPLUS_LIBRARY}")
 
 # Installation rules
-install(FILES sensor_width_camera_database.txt DESTINATION  ${CMAKE_INSTALL_LIBDIR}/openMVG)
+install(FILES sensor_width_camera_database.txt DESTINATION share/openmvg)
diff --git a/src/openMVG/features/CMakeLists.txt b/src/openMVG/features/CMakeLists.txt
index 7100ab0..2af4528 100644
--- a/src/openMVG/features/CMakeLists.txt
+++ b/src/openMVG/features/CMakeLists.txt
@@ -24,14 +24,13 @@ if (CMAKE_CXX_FLAGS)
 endif()
 target_include_directories(openMVG_features
   PUBLIC
-    $<BUILD_INTERFACE:${EIGEN_INCLUDE_DIRS}>
     $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}>
     $<INSTALL_INTERFACE:include>
     $<INSTALL_INTERFACE:include/openMVG>
 )
 target_link_libraries(openMVG_features
   PRIVATE openMVG_fast ${STLPLUS_LIBRARY}
-  PUBLIC ${OPENMVG_LIBRARY_DEPENDENCIES} ${cereal_TARGET})
+  PUBLIC ${OPENMVG_LIBRARY_DEPENDENCIES} ${cereal_TARGET} Eigen3::Eigen)
 if (MSVC)
   set_target_properties(openMVG_features PROPERTIES COMPILE_FLAGS "/bigobj")
   target_compile_options(openMVG_features PUBLIC "-D_USE_MATH_DEFINES")
diff --git a/src/openMVG/image/image_converter.hpp b/src/openMVG/image/image_converter.hpp
index 94b4000..750708e 100644
--- a/src/openMVG/image/image_converter.hpp
+++ b/src/openMVG/image/image_converter.hpp
@@ -9,6 +9,8 @@
 #ifndef OPENMVG_IMAGE_IMAGE_CONVERTER_HPP
 #define OPENMVG_IMAGE_IMAGE_CONVERTER_HPP
 
+#include <cassert>
+
 #include "openMVG/image/image_container.hpp"
 #include "openMVG/image/pixel_types.hpp"
 
diff --git a/src/openMVG/linearProgramming/CMakeLists.txt b/src/openMVG/linearProgramming/CMakeLists.txt
index 4532161..20b9331 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
+    ${OSI_CLP_COIN_LINK_LIBRARIES}
 )
 
 target_include_directories(openMVG_linearProgramming
   PRIVATE
-    ${CLP_INCLUDE_DIRS}
-    ${COINUTILS_INCLUDE_DIRS}
-    ${OSI_INCLUDE_DIRS}
+    ${OSI_CLP_COIN_INCLUDE_DIRS}
   PUBLIC
     $<INSTALL_INTERFACE:include>
 )
diff --git a/src/openMVG/matching/kvld/algorithm.h b/src/openMVG/matching/kvld/algorithm.h
index c3fc3c6..765e5a4 100644
--- a/src/openMVG/matching/kvld/algorithm.h
+++ b/src/openMVG/matching/kvld/algorithm.h
@@ -10,6 +10,7 @@
 #define OPENMVG_MATCHING_KVLD_ALGORITHM_H
 
 #include <algorithm>
+#include <cassert>
 #include <cmath>
 #include <fstream>
 #include "openMVG/image/image_container.hpp"
diff --git a/src/openMVG/multiview/rotation_averaging_l1.cpp b/src/openMVG/multiview/rotation_averaging_l1.cpp
index 7151bd5..dc738e7 100644
--- a/src/openMVG/multiview/rotation_averaging_l1.cpp
+++ b/src/openMVG/multiview/rotation_averaging_l1.cpp
@@ -191,7 +191,7 @@ unsigned int FilterRelativeRotations(
     const Matrix3x3& Rj = Rs[relR.j];
     const Matrix3x3& Rij = relR.Rij;
     const Mat3 eRij(Rj.transpose()*Rij*Ri);
-    const openMVG::Vec3 erij;
+    const openMVG::Vec3 erij{};
     ceres::RotationMatrixToAngleAxis((const double*)eRij.data(), (double*)erij.data());
     errors[r] = (float)erij.norm();
   }
@@ -371,7 +371,7 @@ inline void FillErrorMatrix(
     const Matrix3x3& Rj = Rs[relR.j];
     const Matrix3x3& Rij = relR.Rij;
     const Mat3 eRij(Rj.transpose()*Rij*Ri);
-    const openMVG::Vec3 erij;
+    const openMVG::Vec3 erij{};
     ceres::RotationMatrixToAngleAxis((const double*)eRij.data(), (double*)erij.data());
     b.block<3,1>(3*r,0) = erij;
   }
@@ -389,7 +389,7 @@ inline void CorrectMatrix(
     Matrix3x3& Ri = Rs[r];
     const uint32_t i = (r<nMainViewID ? r : r-1);
     const openMVG::Vec3 eRid = openMVG::Vec3(x.block<3,1>(3*i,0));
-    const Mat3 eRi;
+    const Mat3 eRi{};
     ceres::AngleAxisToRotationMatrix((const double*)eRid.data(), (double*)eRi.data());
     Ri = Ri*eRi;
   }
diff --git a/src/openMVG/multiview/solver_fundamental_kernel.cpp b/src/openMVG/multiview/solver_fundamental_kernel.cpp
index 2ffd45a..bbf74b4 100644
--- a/src/openMVG/multiview/solver_fundamental_kernel.cpp
+++ b/src/openMVG/multiview/solver_fundamental_kernel.cpp
@@ -110,7 +110,7 @@ void EightPointSolver::Solve
                          x2.colwise().homogeneous(),
                          &epipolar_constraint);
   // Find the F matrice in the nullspace of epipolar_constraint.
-  Eigen::SelfAdjointEigenSolver<Mat9> solver
+  Eigen::SelfAdjointEigenSolver<Eigen::Matrix<double, 9, 9>> solver
     (epipolar_constraint.transpose() * epipolar_constraint);
   f = solver.eigenvectors().leftCols<1>();
 
diff --git a/src/openMVG/numeric/CMakeLists.txt b/src/openMVG/numeric/CMakeLists.txt
index 1407bdd..a754a46 100644
--- a/src/openMVG/numeric/CMakeLists.txt
+++ b/src/openMVG/numeric/CMakeLists.txt
@@ -22,7 +22,6 @@ if (CMAKE_CXX_FLAGS)
 endif()
 target_include_directories(openMVG_numeric
   PUBLIC
-    $<BUILD_INTERFACE:${EIGEN_INCLUDE_DIRS}>
     $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}>
     $<INSTALL_INTERFACE:include>
 )
@@ -30,8 +29,7 @@ if (DEFINED OpenMVG_USE_INTERNAL_EIGEN)
   target_include_directories(openMVG_numeric PUBLIC
     $<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include/openMVG/third_party/eigen/>)
 else()
-  target_include_directories(openMVG_numeric PUBLIC
-    $<INSTALL_INTERFACE:${EIGEN_INCLUDE_DIRS}>)
+  target_link_libraries(openMVG_numeric PUBLIC Eigen3::Eigen)
 endif()
 
 if (MSVC)
diff --git a/src/openMVG/numeric/eigen_alias_definition.hpp b/src/openMVG/numeric/eigen_alias_definition.hpp
index cd8e398..7470272 100644
--- a/src/openMVG/numeric/eigen_alias_definition.hpp
+++ b/src/openMVG/numeric/eigen_alias_definition.hpp
@@ -21,6 +21,7 @@
 #include <initializer_list>
 #include <memory>
 #include <vector>
+#include <cassert>
 
 // Extend EIGEN_DEFINE_STL_VECTOR_SPECIALIZATION with initializer list support.
 #define EIGEN_DEFINE_STL_VECTOR_SPECIALIZATION_INITIALIZER_LIST(...)       \
diff --git a/src/openMVG/system/CMakeLists.txt b/src/openMVG/system/CMakeLists.txt
index 5ed532b..a7b5d07 100644
--- a/src/openMVG/system/CMakeLists.txt
+++ b/src/openMVG/system/CMakeLists.txt
@@ -9,7 +9,6 @@ set_property(TARGET openMVG_system PROPERTY FOLDER OpenMVG/OpenMVG)
 install(TARGETS openMVG_system DESTINATION ${CMAKE_INSTALL_LIBDIR} EXPORT openMVG-targets)
 
 add_library(openMVG_progress_test INTERFACE)
-target_link_libraries(openMVG_progress_test INTERFACE ${OPENMVG_LIBRARY_DEPENDENCIES})
-target_include_directories(openMVG_progress_test INTERFACE ${EIGEN_INCLUDE_DIRS})
+target_link_libraries(openMVG_progress_test INTERFACE ${OPENMVG_LIBRARY_DEPENDENCIES} Eigen3::Eigen)
 
 UNIT_TEST(openMVG progress "openMVG_system;openMVG_progress_test;openMVG_testing")
diff --git a/src/software/SfM/CMakeLists.txt b/src/software/SfM/CMakeLists.txt
index 893abd3..430d8a4 100644
--- a/src/software/SfM/CMakeLists.txt
+++ b/src/software/SfM/CMakeLists.txt
@@ -222,8 +222,8 @@ target_link_libraries(openMVG_main_PointsFiltering
     openMVG_system
     openMVG_sfm
     ${STLPLUS_LIBRARY}
+    Eigen3::Eigen
 )
-target_include_directories(openMVG_main_PointsFiltering PRIVATE ${EIGEN_INCLUDE_DIRS})
 
 add_executable(openMVG_main_ChangeLocalOrigin main_ChangeLocalOrigin.cpp)
 target_link_libraries(openMVG_main_ChangeLocalOrigin
diff --git a/src/software/SfM/clustering/domSetLibrary/CMakeLists.txt b/src/software/SfM/clustering/domSetLibrary/CMakeLists.txt
index 41e8e06..013f9c7 100644
--- a/src/software/SfM/clustering/domSetLibrary/CMakeLists.txt
+++ b/src/software/SfM/clustering/domSetLibrary/CMakeLists.txt
@@ -1,4 +1,4 @@
 add_library( domset STATIC domset.cc domset.h types.h )
-target_include_directories(domset PUBLIC ${EIGEN_INCLUDE_DIRS})
+target_link_libraries(domset PUBLIC Eigen3::Eigen)
 target_link_libraries(domset PRIVATE openMVG_matching)
 set_property(TARGET domset PROPERTY FOLDER OpenMVG/software/clustering)
diff --git a/src/testing/CMakeLists.txt b/src/testing/CMakeLists.txt
index b4fe7ae..efbf7cc 100644
--- a/src/testing/CMakeLists.txt
+++ b/src/testing/CMakeLists.txt
@@ -1,3 +1,3 @@
 add_library(openMVG_testing INTERFACE)
-target_include_directories(openMVG_testing INTERFACE ${CMAKE_SOURCE_DIR};${EIGEN_INCLUDE_DIRS})
-target_link_libraries(openMVG_testing INTERFACE openMVG_numeric)
+target_include_directories(openMVG_testing INTERFACE ${CMAKE_SOURCE_DIR})
+target_link_libraries(openMVG_testing INTERFACE openMVG_numeric Eigen3::Eigen)