diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2fad3268a..a835b21f6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1192,7 +1192,9 @@ endif()
 # gflags - https://github.com/gflags/gflags
 ################################################################################
 set(LOCAL_GFLAGS FALSE)
-find_package(GFLAGS)
+if(NOT ENABLE_OWN_GLOG)
+    find_package(GFLAGS)
+endif()
 set_package_properties(GFLAGS PROPERTIES
     PURPOSE "Used for commandline flags management."
     TYPE REQUIRED
@@ -2076,20 +2078,20 @@ if(NOT MATIO_FOUND OR MATIO_VERSION_STRING VERSION_LESS ${GNSSSDR_MATIO_MIN_VERS
                     UPDATE_COMMAND ${CMAKE_BINARY_DIR}/thirdparty/matio/matio-${GNSSSDR_MATIO_LOCAL_VERSION}/autogen.sh
                     CONFIGURE_COMMAND ${CMAKE_BINARY_DIR}/thirdparty/matio/matio-${GNSSSDR_MATIO_LOCAL_VERSION}/configure --with-hdf5=${HDF5_BASE_DIR} --with-zlib=${ZLIB_BASE_DIR} --with-default-file-ver=7.3 --enable-mat73=yes --prefix=<INSTALL_DIR>
                     BUILD_COMMAND ${MATIO_MAKE_PROGRAM}
-                    BUILD_BYPRODUCTS ${CMAKE_BINARY_DIR}/matio/lib/${CMAKE_FIND_LIBRARY_PREFIXES}matio${CMAKE_SHARED_LIBRARY_SUFFIX}
+                    BUILD_BYPRODUCTS ${CMAKE_BINARY_DIR}/matio/lib/${CMAKE_FIND_LIBRARY_PREFIXES}matio${CMAKE_STATIC_LIBRARY_SUFFIX}
                 )
             endif()
             set(MATIO_LOCAL TRUE)
             if(NOT TARGET Matio::matio)
                 file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/matio/include)
                 file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/matio/lib)
-                add_library(Matio::matio SHARED IMPORTED)
+                add_library(Matio::matio STATIC IMPORTED)
                 add_dependencies(Matio::matio matio-${GNSSSDR_MATIO_LOCAL_VERSION})
                 set_target_properties(Matio::matio PROPERTIES
                     IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
-                    IMPORTED_LOCATION "${CMAKE_BINARY_DIR}/matio/lib/${CMAKE_FIND_LIBRARY_PREFIXES}matio${CMAKE_SHARED_LIBRARY_SUFFIX}"
+                    IMPORTED_LOCATION "${CMAKE_BINARY_DIR}/matio/lib/${CMAKE_FIND_LIBRARY_PREFIXES}matio${CMAKE_STATIC_LIBRARY_SUFFIX}"
                     INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_BINARY_DIR}/matio/include
-                    INTERFACE_LINK_LIBRARIES ${CMAKE_BINARY_DIR}/matio/lib/${CMAKE_FIND_LIBRARY_PREFIXES}matio${CMAKE_SHARED_LIBRARY_SUFFIX}
+                    INTERFACE_LINK_LIBRARIES "${CMAKE_BINARY_DIR}/matio/lib/${CMAKE_FIND_LIBRARY_PREFIXES}matio${CMAKE_STATIC_LIBRARY_SUFFIX};${HDF5_LIBRARIES}"
                 )
             endif()
         else()
diff --git a/docs/changelog.md b/docs/changelog.md
index 501abd6d6..f2b6b62c0 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -15,6 +15,12 @@ SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc
 - Faster `SignalConditioner` block when its implementation is set to
   `Pass_Through`.
 
+### Improvements in Portability:
+
+- Fixed `-DENABLE_OWN_GLOG=ON` building option when gflags is installed and it
+  is older than v2.1.2 (_e.g._, in CentOS 7).
+- Fixed static linking of the matio library when downloaded and built by CMake.
+
 ### Improvements in Usability:
 
 - Fixed a bug when enabling pseudorange carrier smoothing in other bands than