diff --git a/CMakeLists.txt b/CMakeLists.txt
index a00acd63..dad694a5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -686,9 +686,6 @@ if (NOT HAVE_SSL_DANE_ENABLE)
   target_include_directories(getdns_objects PRIVATE src/ssl_dane)
   set(USE_DANESSL 1)
 endif ()
-if (Libidn_FOUND)
-  target_include_directories(getdns_objects PRIVATE ${LIBIDN_INCLUDE_DIR})
-endif ()
 if (Libidn2_FOUND)
   target_include_directories(getdns_objects PRIVATE ${LIBIDN2_INCLUDE_DIR})
 endif ()
@@ -722,9 +719,6 @@ if (ENABLE_STATIC)
   if (Libunbound_FOUND)
     target_link_libraries(getdns PUBLIC Libunbound::Libunbound)
   endif ()
-  if (Libidn_FOUND)
-    target_link_libraries(getdns PUBLIC Libidn::Libidn)
-  endif ()
   if (Libidn2_FOUND)
     target_link_libraries(getdns PUBLIC Libidn2::Libidn2)
   endif ()
@@ -754,9 +748,6 @@ if (ENABLE_SHARED)
   if (Libunbound_FOUND)
     target_link_libraries(getdns_shared PUBLIC Libunbound::Libunbound)
   endif ()
-  if (Libidn_FOUND)
-    target_link_libraries(getdns_shared PUBLIC Libidn::Libidn)
-  endif ()
   if (Libidn2_FOUND)
     target_link_libraries(getdns_shared PUBLIC Libidn2::Libidn2)
   endif ()
diff --git a/cmake/modules/FindCheck.cmake b/cmake/modules/FindCheck.cmake
index 81872b8b..ff404c14 100644
--- a/cmake/modules/FindCheck.cmake
+++ b/cmake/modules/FindCheck.cmake
@@ -28,71 +28,87 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(CHECK_INCLUDE_DIR check.h
-  HINTS
-  "${CHECK_DIR}"
-  "${CHECK_DIR}/include"
-  )
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+    pkg_check_modules(PkgCheck IMPORTED_TARGET GLOBAL check)
+endif ()
 
-# Check for PIC and non-PIC libraries. If PIC present, use that
-# in preference (as per Debian check.pc).
-find_library(CHECK_LIBRARY NAMES check_pic libcheck_pic
-  HINTS
-  "${CHECK_DIR}"
-  "${CHECK_DIR}/lib"
-  )
+if (PkgCheck_FOUND)
+  set(CHECK_INCLUDE_DIR ${PkgCheck_INCLUDE_DIRS} CACHE FILEPATH "check include path")
+  set(CHECK_LIBRARIES ${PkgCheck_LIBRARIES} CACHE STRING "check libraries")
+  set(CHECK_VERSION ${PkgCheck_VERSION})
+  add_library(Check::Check ALIAS PkgConfig::PkgCheck)
+  set(Check_FOUND ON)
+else ()
+  find_path(CHECK_INCLUDE_DIR check.h
+    HINTS
+    "${CHECK_DIR}"
+    "${CHECK_DIR}/include"
+    )
 
-if (NOT CHECK_LIBRARY)
-  find_library(CHECK_LIBRARY NAMES check libcheck
+  # Check for PIC and non-PIC libraries. If PIC present, use that
+  # in preference (as per Debian check.pc).
+  find_library(CHECK_LIBRARY NAMES check_pic libcheck_pic
     HINTS
     "${CHECK_DIR}"
     "${CHECK_DIR}/lib"
     )
-endif ()
 
-set(CHECK_LIBRARIES "")
-
-# Check may need the math, subunit and rt libraries on Unix
-if (UNIX)
-  find_library(CHECK_MATH_LIBRARY m)
-  find_library(CHECK_RT_LIBRARY rt)
-  find_library(CHECK_SUBUNIT_LIBRARY subunit)
-
-  if (CHECK_MATH_LIBRARY)
-    list(APPEND CHECK_LIBRARIES "${CHECK_MATH_LIBRARY}")
-  endif ()
-  if (CHECK_RT_LIBRARY)
-    list(APPEND CHECK_LIBRARIES "${CHECK_RT_LIBRARY}")
-  endif ()
-  if (CHECK_SUBUNIT_LIBRARY)
-    list(APPEND CHECK_LIBRARIES "${CHECK_SUBUNIT_LIBRARY}")
-  endif ()
-endif()
-
-if (CHECK_INCLUDE_DIR AND CHECK_LIBRARY)
-  if (NOT TARGET Check::Check)
-    add_library(Check::Check UNKNOWN IMPORTED)
-    set_target_properties(Check::Check PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${CHECK_INCLUDE_DIR}"
-      INTERFACE_LINK_LIBRARIES "${CHECK_LIBRARIES}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${CHECK_LIBRARY}"
+  if (NOT CHECK_LIBRARY)
+    find_library(CHECK_LIBRARY NAMES check libcheck
+      HINTS
+      "${CHECK_DIR}"
+      "${CHECK_DIR}/lib"
       )
   endif ()
 
-  if (NOT CHECK_VERSION AND CHECK_INCLUDE_DIR AND EXISTS "${CHECK_INCLUDE_DIR}/check.h")
-    file(STRINGS "${CHECK_INCLUDE_DIR}/check.h" CHECK_H REGEX "^#define CHECK_M[A-Z]+_VERSION")
-    string(REGEX REPLACE "^.*\(([0-9]+)\).*\(([0-9]+)\).*\(([0-9]+)\).*$" "\\1.\\2.\\3" CHECK_VERSION "${CHECK_H}")
-  endif ()
+  set(_CHECK_LIBARIES "")
+
+  # Check may need the math, subunit and rt libraries on Unix
+  if (UNIX)
+    find_library(CHECK_MATH_LIBRARY m)
+    find_library(CHECK_RT_LIBRARY rt)
+    find_library(CHECK_SUBUNIT_LIBRARY subunit)
+
+    if (CHECK_MATH_LIBRARY)
+      list(APPEND _CHECK_LIBARIES "${CHECK_MATH_LIBRARY}")
+    endif ()
+    if (CHECK_RT_LIBRARY)
+      list(APPEND _CHECK_LIBARIES "${CHECK_RT_LIBRARY}")
+    endif ()
+    if (CHECK_SUBUNIT_LIBRARY)
+      list(APPEND _CHECK_LIBARIES "${CHECK_SUBUNIT_LIBRARY}")
+    endif ()
+  endif()
+
+  set(CHECK_LIBRARIES ${_CHECK_LIBARIES} ${CHECK_LIBRARY} CACHE STRING "check libraries")
+
+  if (CHECK_INCLUDE_DIR AND CHECK_LIBRARY)
+    if (NOT TARGET Check::Check)
+      add_library(Check::Check UNKNOWN IMPORTED)
+      set_target_properties(Check::Check PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${CHECK_INCLUDE_DIR}"
+        INTERFACE_LINK_LIBRARIES "${CHECK_LIBRARIES}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${CHECK_LIBRARY}"
+        )
+    endif ()
+
+    if (NOT CHECK_VERSION AND CHECK_INCLUDE_DIR AND EXISTS "${CHECK_INCLUDE_DIR}/check.h")
+      file(STRINGS "${CHECK_INCLUDE_DIR}/check.h" CHECK_H REGEX "^#define CHECK_M[A-Z]+_VERSION")
+      string(REGEX REPLACE "^.*\(([0-9]+)\).*\(([0-9]+)\).*\(([0-9]+)\).*$" "\\1.\\2.\\3" CHECK_VERSION "${CHECK_H}")
+    endif ()
+  endif()
+
+  list(APPEND CHECK_LIBRARIES "${CHECK_LIBRARY}")
+
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(Check
+    REQUIRED_VARS CHECK_LIBRARIES CHECK_INCLUDE_DIR
+    VERSION_VAR CHECK_VERSION
+    )
+
 endif()
 
-list(APPEND CHECK_LIBRARIES "${CHECK_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Check
-  REQUIRED_VARS CHECK_LIBRARIES CHECK_INCLUDE_DIR
-  VERSION_VAR CHECK_VERSION
-  )
-
 mark_as_advanced(CHECK_INCLUDE_DIR CHECK_LIBRARIES CHECK_LIBRARY
   CHECK_MATH_LIBRARY CHECK_RT_LIBRARY CHECK_SUBUNIT_LIBRARY)
diff --git a/cmake/modules/FindGnuTLS.cmake b/cmake/modules/FindGnuTLS.cmake
index 961aa088..7df6ab17 100644
--- a/cmake/modules/FindGnuTLS.cmake
+++ b/cmake/modules/FindGnuTLS.cmake
@@ -30,56 +30,72 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(GNUTLS_INCLUDE_DIR gnutls/gnutls.h
-  HINTS
-  "${GNUTLS_DIR}"
-  "${GNUTLS_DIR}/include"
-)
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+  pkg_check_modules(PkgGnuTLS IMPORTED_TARGET GLOBAL QUIET gnutls)
+  pkg_check_modules(PkgGnuTLSDane IMPORTED_TARGET GLOBAL QUIET gnutls-dane)
+endif ()
 
-find_library(GNUTLS_LIBRARY NAMES gnutls libgnutls
-  HINTS
-  "${GNUTLS_DIR}"
-  "${GNUTLS_DIR}/lib"
-)
-
-find_library(GNUTLS_DANE_LIBRARY NAMES gnutls-dane libgnutls-dane
-  HINTS
-  "${GNUTLS_DIR}"
-  "${GNUTLS_DIR}/lib"
-)
-
-set(GNUTLS_LIBRARIES "")
-
-if (GNUTLS_INCLUDE_DIR AND GNUTLS_LIBRARY AND GNUTLS_DANE_LIBRARY)
-  if (NOT TARGET GnuTLS::GnuTLS)
-    add_library(GnuTLS::GnuTLS UNKNOWN IMPORTED)
-    set_target_properties(GnuTLS::GnuTLS PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${GNUTLS_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${GNUTLS_LIBRARY}"
-      )
-  endif ()
-  if (NOT TARGET GnuTLS::Dane)
-    add_library(GnuTLS::Dane UNKNOWN IMPORTED)
-    set_target_properties(GnuTLS::Dane PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${GNUTLS_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${GNUTLS_DANE_LIBRARY}"
-      )
-  endif ()
-
-  if (NOT GNUTLS_VERSION AND GNUTLS_INCLUDE_DIR)
-    file(STRINGS "${GNUTLS_INCLUDE_DIR}/gnutls/gnutls.h" GNUTLS_VER_H REGEX "^#define GNUTLS_VERSION_(MAJOR|MINOR|PATCH) ")
-    string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*_PATCH ([0-9]+).*$" "\\1.\\2.\\3c" GNUTLS_VERSION "${GNUTLS_VER_H}")
-  endif ()
-endif()
-
-list(APPEND GNUTLS_LIBRARIES "${GNUTLS_LIBRARY}" "${GNUTLS_DANE_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(GnuTLS
-  REQUIRED_VARS GNUTLS_LIBRARIES GNUTLS_INCLUDE_DIR
-  VERSION_VAR GNUTLS_VERSION
+if (PkgGnuTLS_FOUND AND PkgGnuTLSDane_FOUND)
+  set(GNUTLS_INCLUDE_DIR ${PkgGnuTLS_INCLUDE_DIRS} $PkgGnuTLSDane_INCLUDE_DIRS} CACHE FILEPATH "GnuTLS include path")
+  set(NETTLE_LIBRARIES ${PkgGnuTLS_LIBRARIES} ${PkgGnuTLSDane_LIBRARIES} CACHE STRING "GnuTLS libraries")
+  set(NETTLE_VERSION ${PkgGnuTLS_VERSION})
+  add_library(GnuTLS::GnuTLS ALIAS PkgConfig::PkgGnuTLS)
+  add_library(GnuTLS::Dane ALIAS PkgConfig::PkgGnuTLSDane)
+  set(GnuTLS_FOUND ON)
+else ()
+  find_path(GNUTLS_INCLUDE_DIR gnutls/gnutls.h
+    HINTS
+    "${GNUTLS_DIR}"
+    "${GNUTLS_DIR}/include"
   )
+  
+  find_library(GNUTLS_LIBRARY NAMES gnutls libgnutls
+    HINTS
+    "${GNUTLS_DIR}"
+    "${GNUTLS_DIR}/lib"
+  )
+  
+  find_library(GNUTLS_DANE_LIBRARY NAMES gnutls-dane libgnutls-dane
+    HINTS
+    "${GNUTLS_DIR}"
+    "${GNUTLS_DIR}/lib"
+  )
+  
+  set(_GNUTLS_LIBRARIES "")
+  
+  if (GNUTLS_INCLUDE_DIR AND GNUTLS_LIBRARY AND GNUTLS_DANE_LIBRARY)
+    if (NOT TARGET GnuTLS::GnuTLS)
+      add_library(GnuTLS::GnuTLS UNKNOWN IMPORTED)
+      set_target_properties(GnuTLS::GnuTLS PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${GNUTLS_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${GNUTLS_LIBRARY}"
+        )
+    endif ()
+    if (NOT TARGET GnuTLS::Dane)
+      add_library(GnuTLS::Dane UNKNOWN IMPORTED)
+      set_target_properties(GnuTLS::Dane PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${GNUTLS_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${GNUTLS_DANE_LIBRARY}"
+        )
+    endif ()
+  
+    if (NOT GNUTLS_VERSION AND GNUTLS_INCLUDE_DIR)
+      file(STRINGS "${GNUTLS_INCLUDE_DIR}/gnutls/gnutls.h" GNUTLS_VER_H REGEX "^#define GNUTLS_VERSION_(MAJOR|MINOR|PATCH) ")
+      string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*_PATCH ([0-9]+).*$" "\\1.\\2.\\3c" GNUTLS_VERSION "${GNUTLS_VER_H}")
+    endif ()
+  endif ()
+  
+  list(APPEND _GNUTLS_LIBRARIES "${GNUTLS_LIBRARY}" "${GNUTLS_DANE_LIBRARY}")
+  set(GNUTLS_LIBRARIES ${_GNUTLS_LIBRARIES} CACHE STRING "GnuTLS libraries")
+
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(GnuTLS
+    REQUIRED_VARS GNUTLS_LIBRARIES GNUTLS_INCLUDE_DIR
+    VERSION_VAR GNUTLS_VERSION
+    )
+endif ()
 
 mark_as_advanced(GNUTLS_INCLUDE_DIR GNUTLS_LIBRARIES GNUTLS_LIBRARY GNUTLS_DANE_LIBRARY)
diff --git a/cmake/modules/FindLibevent2.cmake b/cmake/modules/FindLibevent2.cmake
index 9b9f2bb4..b84dfa59 100644
--- a/cmake/modules/FindLibevent2.cmake
+++ b/cmake/modules/FindLibevent2.cmake
@@ -28,42 +28,51 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(LIBEVENT2_INCLUDE_DIR event2/event.h
-  HINTS
-  "${LIBEVENT2_DIR}"
-  "${LIBEVENT2_DIR}/include"
-)
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+    pkg_check_modules(PkgLibevent IMPORTED_TARGET GLOBAL QUIET libevent>=2)
+endif ()
 
-find_library(LIBEVENT2_LIBRARY NAMES event_core libevent_core
-  HINTS
-  "${LIBEVENT2_DIR}"
-  "${LIBEVENT2_DIR}/lib"
-)
-
-set(LIBEVENT2_LIBRARIES "")
-
-if (LIBEVENT2_INCLUDE_DIR AND LIBEVENT2_LIBRARY)
-  if (NOT TARGET Libevent2::Libevent_core)
-    add_library(Libevent2::Libevent_core UNKNOWN IMPORTED)
-    set_target_properties(Libevent2::Libevent_core PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${LIBEVENT2_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${LIBEVENT2_LIBRARY}"
-      )
-  endif ()
-
-  if (NOT LIBEVENT2_VERSION AND LIBEVENT2_INCLUDE_DIR AND EXISTS "${LIBEVENT2_INCLUDE_DIR}/event2/event.h")
-    file(STRINGS "${LIBEVENT2_INCLUDE_DIR}/event2/event-config.h" LIBEVENT2_H REGEX "^#define _?EVENT_+VERSION ")
-    string(REGEX REPLACE "^.*EVENT_+VERSION \"([^\"]+)\".*$" "\\1" LIBEVENT2_VERSION "${LIBEVENT2_H}")
-  endif ()
-endif()
-
-list(APPEND LIBEVENT2_LIBRARIES "${LIBEVENT2_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Libevent2
-  REQUIRED_VARS LIBEVENT2_LIBRARIES LIBEVENT2_INCLUDE_DIR
-  VERSION_VAR LIBEVENT2_VERSION
+if (PkgLibevent_FOUND)
+  set(LIBEVENT2_INCLUDE_DIR ${PkgLibevent_INCLUDE_DIRS} CACHE FILEPATH "libevent2 include path")
+  set(LIBEVENT2_LIBRARIES ${PkgLibevent_LIBRARIES} CACHE STRING "libevent2 libraries")
+  set(LIBEVENT2_VERSION ${PkgLibevent_VERSION})
+  add_library(Libevent2::Libevent_core ALIAS PkgConfig::PkgLibevent)
+  set(Libevent2_FOUND ON)
+else ()
+  find_path(LIBEVENT2_INCLUDE_DIR event2/event.h
+    HINTS
+    "${LIBEVENT2_DIR}"
+    "${LIBEVENT2_DIR}/include"
   )
+  
+  find_library(LIBEVENT2_LIBRARIES NAMES event_core libevent_core
+    HINTS
+    "${LIBEVENT2_DIR}"
+    "${LIBEVENT2_DIR}/lib"
+  )
+  
+  if (LIBEVENT2_INCLUDE_DIR AND LIBEVENT2_LIBRARIES)
+    if (NOT TARGET Libevent2::Libevent_core)
+      add_library(Libevent2::Libevent_core UNKNOWN IMPORTED)
+      set_target_properties(Libevent2::Libevent_core PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBEVENT2_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${LIBEVENT2_LIBRARIES}"
+        )
+    endif ()
+  
+    if (NOT LIBEVENT2_VERSION AND LIBEVENT2_INCLUDE_DIR AND EXISTS "${LIBEVENT2_INCLUDE_DIR}/event2/event.h")
+      file(STRINGS "${LIBEVENT2_INCLUDE_DIR}/event2/event-config.h" LIBEVENT2_H REGEX "^#define _?EVENT_+VERSION ")
+      string(REGEX REPLACE "^.*EVENT_+VERSION \"([^\"]+)\".*$" "\\1" LIBEVENT2_VERSION "${LIBEVENT2_H}")
+    endif ()
+  endif ()
 
-mark_as_advanced(LIBEVENT2_INCLUDE_DIR LIBEVENT2_LIBRARIES LIBEVENT2_LIBRARY)
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(Libevent2
+    REQUIRED_VARS LIBEVENT2_LIBRARIES LIBEVENT2_INCLUDE_DIR
+    VERSION_VAR LIBEVENT2_VERSION
+  )
+endif ()
+
+mark_as_advanced(LIBEVENT2_INCLUDE_DIR LIBEVENT2_LIBRARIES)
diff --git a/cmake/modules/FindLibidn2.cmake b/cmake/modules/FindLibidn2.cmake
index 0ddcbc28..2c295437 100644
--- a/cmake/modules/FindLibidn2.cmake
+++ b/cmake/modules/FindLibidn2.cmake
@@ -28,42 +28,50 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(LIBIDN2_INCLUDE_DIR idn2.h
-  HINTS
-  "${LIBIDN2_DIR}"
-  "${LIBIDN2_DIR}/include"
-)
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+    pkg_check_modules(PkgLibIdn2 IMPORTED_TARGET GLOBAL libidn2)
+endif ()
 
-find_library(LIBIDN2_LIBRARY NAMES idn2 libidn2
-  HINTS
-  "${LIBIDN2_DIR}"
-  "${LIBIDN2_DIR}/lib"
-)
-
-set(LIBIDN2_LIBRARIES "")
-
-if (LIBIDN2_INCLUDE_DIR AND LIBIDN2_LIBRARY)
-  if (NOT TARGET Libidn2::Libidn2)
-    add_library(Libidn2::Libidn2 UNKNOWN IMPORTED)
-    set_target_properties(Libidn2::Libidn2 PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${LIBIDN2_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${LIBIDN2_LIBRARY}"
-      )
-  endif ()
-
-  if (NOT LIBIDN2_VERSION AND LIBIDN2_INCLUDE_DIR AND EXISTS "${LIBIDN2_INCLUDE_DIR}/idn2.h")
-    file(STRINGS "${LIBIDN2_INCLUDE_DIR}/idn2.h" LIBIDN2_H REGEX "^[ \t]*#[ \t]*define[ \t]+IDN2_VERSION[ \t]")
-    string(REGEX REPLACE "^.*IDN2_VERSION[ \t]+\"([0-9.]+)\".*$" "\\1" LIBIDN2_VERSION "${LIBIDN2_H}")
-  endif ()
-endif()
-
-list(APPEND LIBIDN2_LIBRARIES "${LIBIDN2_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Libidn2
-  REQUIRED_VARS LIBIDN2_LIBRARIES LIBIDN2_INCLUDE_DIR
-  VERSION_VAR LIBIDN2_VERSION
+if (PkgLibIdn2_FOUND)
+  set(LIBIDN2_INCLUDE_DIR ${PkgLibIdn2_INCLUDE_DIRS} CACHE FILEPATH "libidn2 include path")
+  set(LIBIDN2_LIBRARIES ${PkgLibIdn2_LIBRARIES} CACHE STRING "libidn2 libraries")
+  set(LIBIDN2_VERSION ${PkgLibIdn2_VERSION})
+  add_library(Libidn2::Libidn2 ALIAS PkgConfig::PkgLibIdn2)
+  set(Libidn2_FOUND ON)
+else ()
+  find_path(LIBIDN2_INCLUDE_DIR idn2.h
+    HINTS
+      "${LIBIDN2_DIR}"
+      "${LIBIDN2_DIR}/include"
   )
 
-mark_as_advanced(LIBIDN2_INCLUDE_DIR LIBIDN2_LIBRARIES LIBIDN2_LIBRARY)
+  find_library(LIBIDN2_LIBRARIES NAMES idn2 libidn2
+    HINTS
+      "${LIBIDN2_DIR}"
+      "${LIBIDN2_DIR}/lib"
+  )
+
+  if (LIBIDN2_INCLUDE_DIR AND LIBIDN2_LIBRARIES)
+    if (NOT TARGET Libidn2::Libidn2)
+      add_library(Libidn2::Libidn2 UNKNOWN IMPORTED)
+      set_target_properties(Libidn2::Libidn2 PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBIDN2_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${LIBIDN2_LIBRARIES}"
+      )
+    endif ()
+
+    if (NOT LIBIDN2_VERSION AND LIBIDN2_INCLUDE_DIR AND EXISTS "${LIBIDN2_INCLUDE_DIR}/idn2.h")
+      file(STRINGS "${LIBIDN2_INCLUDE_DIR}/idn2.h" LIBIDN2_H REGEX "^[ \t]*#[ \t]*define[ \t]+IDN2_VERSION[ \t]")
+      string(REGEX REPLACE "^.*IDN2_VERSION[ \t]+\"([0-9.]+)\".*$" "\\1" LIBIDN2_VERSION "${LIBIDN2_H}")
+    endif ()
+  endif ()
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(Libidn2
+    REQUIRED_VARS LIBIDN2_LIBRARIES LIBIDN2_INCLUDE_DIR
+    VERSION_VAR LIBIDN2_VERSION
+  )
+endif ()
+
+mark_as_advanced(LIBIDN2_INCLUDE_DIR LIBIDN2_LIBRARIES)
diff --git a/cmake/modules/FindLibunbound.cmake b/cmake/modules/FindLibunbound.cmake
index bdef88be..10d9a7e1 100644
--- a/cmake/modules/FindLibunbound.cmake
+++ b/cmake/modules/FindLibunbound.cmake
@@ -28,63 +28,77 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(LIBUNBOUND_INCLUDE_DIR unbound.h
-  HINTS
-  "${LIBUNBOUND_DIR}"
-  "${LIBUNBOUND_DIR}/include"
-)
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+  pkg_check_modules(PkgLibunbound IMPORTED_TARGET GLOBAL QUIET libunbound)
+endif ()
 
-find_library(LIBUNBOUND_LIBRARY NAMES unbound
-  HINTS
-  "${LIBUNBOUND_DIR}"
-  "${LIBUNBOUND_DIR}/lib"
-)
-
-set(LIBUNBOUND_LIBRARIES "")
-
-if (UNIX)
-  find_package(Threads REQUIRED)
-  find_package(OpenSSL REQUIRED)
-
-  list(APPEND LIBUNBOUND_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
-  list(APPEND LIBUNBOUND_LIBRARIES "${OPENSSL_LIBRARIES}")
-endif()
-
-if (LIBUNBOUND_INCLUDE_DIR AND LIBUNBOUND_LIBRARY)
-  if (NOT TARGET Libunbound::Libunbound)
-    add_library(Libunbound::Libunbound UNKNOWN IMPORTED)
-    set_target_properties(Libunbound::Libunbound PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${LIBUNBOUND_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${LIBUNBOUND_LIBRARY}"
-      )
-
-    if(UNIX AND TARGET Threads::Threads)
-      set_property(TARGET Libunbound::Libunbound APPEND PROPERTY
-        INTERFACE_LINK_LIBRARIES Threads::Threads)
-    endif ()
-    if(UNIX AND TARGET OpenSSL::SSL)
-      set_property(TARGET Libunbound::Libunbound APPEND PROPERTY
-        INTERFACE_LINK_LIBRARIES OpenSSL::SSL)
-    endif ()
-    if(UNIX AND TARGET OpenSSL::Crypto)
-      set_property(TARGET Libunbound::Libunbound APPEND PROPERTY
-        INTERFACE_LINK_LIBRARIES OpenSSL::Crypto)
-    endif ()
-  endif ()
-
-  if (NOT LIBUNBOUND_VERSION AND LIBUNBOUND_INCLUDE_DIR AND EXISTS "${LIBUNBOUND_INCLUDE_DIR}/unbound.h")
-    file(STRINGS "${LIBUNBOUND_INCLUDE_DIR}/unbound.h" LIBUNBOUND_H REGEX "^#define UNBOUND_VERSION_M[A-Z]+")
-    string(REGEX REPLACE "^.*MAJOR ([0-9]+).*MINOR ([0-9]+).*MICRO ([0-9]+).*$" "\\1.\\2.\\3" LIBUNBOUND_VERSION "${LIBUNBOUND_H}")
-  endif ()
-endif()
-
-list(APPEND LIBUNBOUND_LIBRARIES "${LIBUNBOUND_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Libunbound
-  REQUIRED_VARS LIBUNBOUND_LIBRARIES LIBUNBOUND_INCLUDE_DIR
-  VERSION_VAR LIBUNBOUND_VERSION
+if (PkgLibunbound_FOUND)
+  set(LIBUNBOUND_INCLUDE_DIR ${PkgLibunbound_INCLUDE_DIRS} CACHE FILEPATH "libunbound include path")
+  set(LIBUNBOUND_LIBRARIES ${PkgLibunbound_LIBRARIES} CACHE STRING "libunbound libraries")
+  set(LIBUNBOUND_VERSION ${PkgLibunbound_VERSION})
+  add_library(Libunbound::Libunbound ALIAS PkgConfig::PkgLibunbound)
+  set(Libunbound_FOUND ON)
+else ()
+  find_path(LIBUNBOUND_INCLUDE_DIR unbound.h
+    HINTS
+    "${LIBUNBOUND_DIR}"
+    "${LIBUNBOUND_DIR}/include"
   )
+  
+  find_library(LIBUNBOUND_LIBRARY NAMES unbound
+    HINTS
+    "${LIBUNBOUND_DIR}"
+    "${LIBUNBOUND_DIR}/lib"
+  )
+  
+  set(_LIBUNBOUND_LIBRARIES "")
+  
+  if (UNIX)
+    find_package(Threads REQUIRED)
+    find_package(OpenSSL REQUIRED)
+  
+    list(APPEND _LIBUNBOUND_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
+    list(APPEND _LIBUNBOUND_LIBRARIES "${OPENSSL_LIBRARIES}")
+  endif()
+  
+  if (LIBUNBOUND_INCLUDE_DIR AND LIBUNBOUND_LIBRARY)
+    if (NOT TARGET Libunbound::Libunbound)
+      add_library(Libunbound::Libunbound UNKNOWN IMPORTED)
+      set_target_properties(Libunbound::Libunbound PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBUNBOUND_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${LIBUNBOUND_LIBRARY}"
+        )
+  
+      if(UNIX AND TARGET Threads::Threads)
+        set_property(TARGET Libunbound::Libunbound APPEND PROPERTY
+          INTERFACE_LINK_LIBRARIES Threads::Threads)
+      endif ()
+      if(UNIX AND TARGET OpenSSL::SSL)
+        set_property(TARGET Libunbound::Libunbound APPEND PROPERTY
+          INTERFACE_LINK_LIBRARIES OpenSSL::SSL)
+      endif ()
+      if(UNIX AND TARGET OpenSSL::Crypto)
+        set_property(TARGET Libunbound::Libunbound APPEND PROPERTY
+          INTERFACE_LINK_LIBRARIES OpenSSL::Crypto)
+      endif ()
+    endif ()
+  
+    if (NOT LIBUNBOUND_VERSION AND LIBUNBOUND_INCLUDE_DIR AND EXISTS "${LIBUNBOUND_INCLUDE_DIR}/unbound.h")
+      file(STRINGS "${LIBUNBOUND_INCLUDE_DIR}/unbound.h" LIBUNBOUND_H REGEX "^#define UNBOUND_VERSION_M[A-Z]+")
+      string(REGEX REPLACE "^.*MAJOR ([0-9]+).*MINOR ([0-9]+).*MICRO ([0-9]+).*$" "\\1.\\2.\\3" LIBUNBOUND_VERSION "${LIBUNBOUND_H}")
+    endif ()
+  endif ()
+  
+  list(APPEND _LIBUNBOUND_LIBRARIES "${LIBUNBOUND_LIBRARY}")
+  set(LIBUNBOUND_LIBRARIES ${_LIBUNBOUND_LIBRARIES} CACHE STRING "libunbound libraries")
+
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(Libunbound
+    REQUIRED_VARS LIBUNBOUND_LIBRARIES LIBUNBOUND_INCLUDE_DIR
+    VERSION_VAR LIBUNBOUND_VERSION
+    )
+endif ()
 
 mark_as_advanced(LIBUNBOUND_INCLUDE_DIR LIBUNBOUND_LIBRARIES LIBUNBOUND_LIBRARY)
diff --git a/cmake/modules/FindLibuv.cmake b/cmake/modules/FindLibuv.cmake
index 749697aa..e9ed8e66 100644
--- a/cmake/modules/FindLibuv.cmake
+++ b/cmake/modules/FindLibuv.cmake
@@ -28,46 +28,55 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(LIBUV_INCLUDE_DIR uv.h
-  HINTS
-  "${LIBUV_DIR}"
-  "${LIBUV_DIR}/include"
-)
+find_package(PkgConfig QUIET)
+if (PKG_CONFIG_FOUND)
+  pkg_check_modules(PkgLibuv IMPORTED_TARGET GLOBAL libuv)
+endif ()
 
-find_library(LIBUV_LIBRARY NAMES uv libuv
-  HINTS
-  "${LIBUV_DIR}"
-  "${LIBUV_DIR}/lib"
-)
-
-set(LIBUV_LIBRARIES "")
-
-if (LIBUV_INCLUDE_DIR AND LIBUV_LIBRARY)
-  if (NOT TARGET Libuv::Libuv)
-    add_library(Libuv::Libuv UNKNOWN IMPORTED)
-    set_target_properties(Libuv::Libuv PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${LIBUV_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${LIBUV_LIBRARY}"
-      )
-  endif ()
-
-  if (NOT LIBUV_VERSION AND LIBUV_INCLUDE_DIR)
-    if (EXISTS "${LIBUV_INCLUDE_DIR}/uv-version.h")
-      file(STRINGS "${LIBUV_INCLUDE_DIR}/uv-version.h" LIBUV_VER_H REGEX "^#define UV_VERSION_(MAJOR|MINOR|PATCH) ")
-    elseif (EXISTS "${LIBUV_INCLUDE_DIR}/uv/version.h")
-      file(STRINGS "${LIBUV_INCLUDE_DIR}/uv/version.h" LIBUV_VER_H REGEX "^#define UV_VERSION_(MAJOR|MINOR|PATCH) ")
-    endif ()
-    string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*_PATCH ([0-9]+).*$" "\\1.\\2.\\3" LIBUV_VERSION "${LIBUV_VER_H}")
-  endif ()
-endif()
-
-list(APPEND LIBUV_LIBRARIES "${LIBUV_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Libuv
-  REQUIRED_VARS LIBUV_LIBRARIES LIBUV_INCLUDE_DIR
-  VERSION_VAR LIBUV_VERSION
+if (PkgLibuv_FOUND)
+  set(LIBUV_INCLUDE_DIR ${PkgLibuv_INCLUDE_DIRS} CACHE FILEPATH "libuv include path")
+  set(LIBUV_LIBRARIES ${PkgLibuv_LIBRARIES} CACHE STRING "libuv libraries")
+  set(LIBUV_VERSION ${PkgLibuv_VERSION})
+  add_library(Libuv::Libuv ALIAS PkgConfig::PkgLibuv)
+  set(Libuv_FOUND ON)
+else ()
+  find_path(LIBUV_INCLUDE_DIR uv.h
+    HINTS
+    "${LIBUV_DIR}"
+    "${LIBUV_DIR}/include"
   )
+  
+  find_library(LIBUV_LIBRARIES NAMES uv libuv
+    HINTS
+    "${LIBUV_DIR}"
+    "${LIBUV_DIR}/lib"
+  )
+  
+  if (LIBUV_INCLUDE_DIR AND LIBUV_LIBRARY)
+    if (NOT TARGET Libuv::Libuv)
+      add_library(Libuv::Libuv UNKNOWN IMPORTED)
+      set_target_properties(Libuv::Libuv PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBUV_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${LIBUV_LIBRARIES}"
+        )
+    endif ()
+  
+    if (NOT LIBUV_VERSION AND LIBUV_INCLUDE_DIR)
+      if (EXISTS "${LIBUV_INCLUDE_DIR}/uv-version.h")
+        file(STRINGS "${LIBUV_INCLUDE_DIR}/uv-version.h" LIBUV_VER_H REGEX "^#define UV_VERSION_(MAJOR|MINOR|PATCH) ")
+      elseif (EXISTS "${LIBUV_INCLUDE_DIR}/uv/version.h")
+        file(STRINGS "${LIBUV_INCLUDE_DIR}/uv/version.h" LIBUV_VER_H REGEX "^#define UV_VERSION_(MAJOR|MINOR|PATCH) ")
+      endif ()
+      string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*_PATCH ([0-9]+).*$" "\\1.\\2.\\3" LIBUV_VERSION "${LIBUV_VER_H}")
+    endif ()
+  endif ()
 
-mark_as_advanced(LIBUV_INCLUDE_DIR LIBUV_LIBRARIES LIBUV_LIBRARY)
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(Libuv
+    REQUIRED_VARS LIBUV_LIBRARIES LIBUV_INCLUDE_DIR
+    VERSION_VAR LIBUV_VERSION
+  )
+endif ()
+
+mark_as_advanced(LIBUV_INCLUDE_DIR LIBUV_LIBRARIES)
diff --git a/cmake/modules/FindNettle.cmake b/cmake/modules/FindNettle.cmake
index 3303b4b5..c88b05a9 100644
--- a/cmake/modules/FindNettle.cmake
+++ b/cmake/modules/FindNettle.cmake
@@ -30,66 +30,82 @@ This module will set the following variables in your project:
 
 #]=======================================================================]
 
-find_path(NETTLE_INCLUDE_DIR nettle/version.h
-  HINTS
-  "${NETTLE_DIR}"
-  "${NETTLE_DIR}/include"
-)
-
-find_library(NETTLE_LIBRARY NAMES nettle libnettle
-  HINTS
-  "${NETTLE_DIR}"
-  "${NETTLE_DIR}/lib"
-)
-
-find_library(HOGWEED_LIBRARY NAMES hogweed libhogweed
-  HINTS
-  "${NETTLE_DIR}"
-  "${NETTLE_DIR}/lib"
-)
-
-set(NETTLE_LIBRARIES "")
-
-# May need gmp library on Unix.
-if (UNIX)
-  find_library(NETTLE_GMP_LIBRARY gmp)
-
-  if (NETTLE_GMP_LIBRARY)
-    list(APPEND NETTLE_LIBRARIES "${NETTLE_GMP_LIBRARY}")
-  endif ()
-endif ()
-
-if (NETTLE_INCLUDE_DIR AND NETTLE_LIBRARY AND HOGWEED_LIBRARY)
-  if (NOT TARGET Nettle::Nettle)
-    add_library(Nettle::Nettle UNKNOWN IMPORTED)
-    set_target_properties(Nettle::Nettle PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${NETTLE_INCLUDE_DIR}"
-      INTERFACE_LINK_LIBRARIES "${NETTLE_LIBRARIES}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${NETTLE_LIBRARY}"
-      )
-  endif ()
-  if (NOT TARGET Nettle::Hogweed)
-    add_library(Nettle::Hogweed UNKNOWN IMPORTED)
-    set_target_properties(Nettle::Hogweed PROPERTIES
-      INTERFACE_INCLUDE_DIRECTORIES "${NETTLE_INCLUDE_DIR}"
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${HOGWEED_LIBRARY}"
-      )
-  endif ()
-
-  if (NOT NETTLE_VERSION AND NETTLE_INCLUDE_DIR)
-    file(STRINGS "${NETTLE_INCLUDE_DIR}/nettle/version.h" NETTLE_VER_H REGEX "^#define NETTLE_VERSION_(MAJOR|MINOR) ")
-    string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*$" "\\1.\\2" NETTLE_VERSION "${NETTLE_VER_H}")
-  endif ()
+find_package(PkgConfig QUIET)
+if(PKG_CONFIG_FOUND)
+  pkg_check_modules(PkgNettle IMPORTED_TARGET GLOBAL nettle)
+  pkg_check_modules(PkgHogweed IMPORTED_TARGET GLOBAL QUIET hogweed)
 endif()
 
-list(APPEND NETTLE_LIBRARIES "${NETTLE_LIBRARY}" "${HOGWEED_LIBRARY}")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Nettle
-  REQUIRED_VARS NETTLE_LIBRARIES NETTLE_INCLUDE_DIR
-  VERSION_VAR NETTLE_VERSION
+if(PkgNettle_FOUND AND PkHogweed_FOUND)
+  set(NETTLE_INCLUDE_DIR ${PkgNettle_INCLUDE_DIRS} ${PkgHogweed_INCLUDE_DIRS} CACHE FILEPATH "Nettle include path")
+  set(NETTLE_LIBRARIES ${PkgNettle_LIBRARIES} ${PkgHogweed_LIBRARIES} CACHE STRING "Nettle libraries")
+  set(NETTLE_VERSION ${PkgNettle_VERSION})
+  add_library(Nettle::Nettle ALIAS PkgConfig::PkgNettle)
+  add_library(Nettle::Hogweed ALIAS PkgConfig::PkgHogweed)
+  set(Nettle_FOUND ON)
+else()
+  find_path(NETTLE_INCLUDE_DIR nettle/version.h
+    HINTS
+    "${NETTLE_DIR}"
+    "${NETTLE_DIR}/include"
+  )
+  
+  find_library(NETTLE_LIBRARY NAMES nettle libnettle
+    HINTS
+    "${NETTLE_DIR}"
+    "${NETTLE_DIR}/lib"
+  )
+  
+  find_library(HOGWEED_LIBRARY NAMES hogweed libhogweed
+    HINTS
+    "${NETTLE_DIR}"
+    "${NETTLE_DIR}/lib"
   )
 
-mark_as_advanced(NETTLE_INCLUDE_DIR NETTLE_LIBRARIES NETTLE_LIBRARY HOGWEED_LIBRARY)
+  set(_NETTLE_LIBRARIES ${NETTLE_LIBRARY} ${HOGWEED_LIBRARY})
+  
+  # May need gmp library on Unix.
+  if (UNIX)
+    find_library(NETTLE_GMP_LIBRARY gmp)
+  endif ()
+  if (NETTLE_GMP_LIBRARY)
+    list(APPEND _NETTLE_LIBRARIES "${NETTLE_GMP_LIBRARY}")
+ endif ()
+  set(NETTLE_LIBRARIES ${_NETTLE_LIBRARIES} CACHE STRING "nettle libraries")
+
+  
+  if (NETTLE_INCLUDE_DIR AND NETTLE_LIBRARY AND HOGWEED_LIBRARY)
+    if (NOT TARGET Nettle::Nettle)
+      add_library(Nettle::Nettle UNKNOWN IMPORTED)
+      set_target_properties(Nettle::Nettle PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${NETTLE_INCLUDE_DIR}"
+        INTERFACE_LINK_LIBRARIES "${NETTLE_LIBRARIES}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${NETTLE_LIBRARY}"
+        )
+    endif ()
+    if (NOT TARGET Nettle::Hogweed)
+      add_library(Nettle::Hogweed UNKNOWN IMPORTED)
+      set_target_properties(Nettle::Hogweed PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${NETTLE_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+        IMPORTED_LOCATION "${HOGWEED_LIBRARY}"
+        )
+    endif ()
+  
+    if (NOT NETTLE_VERSION AND NETTLE_INCLUDE_DIR)
+      file(STRINGS "${NETTLE_INCLUDE_DIR}/nettle/version.h" NETTLE_VER_H REGEX "^#define NETTLE_VERSION_(MAJOR|MINOR) ")
+      string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*$" "\\1.\\2" NETTLE_VERSION "${NETTLE_VER_H}")
+    endif ()
+  endif()
+  
+  list(APPEND NETTLE_LIBRARIES "${NETTLE_LIBRARY}" "${HOGWEED_LIBRARY}")
+
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(Nettle
+    REQUIRED_VARS NETTLE_LIBRARIES NETTLE_INCLUDE_DIR
+    VERSION_VAR NETTLE_VERSION
+  )
+endif()
+
+mark_as_advanced(NETTLE_INCLUDE_DIR NETTLE_LIBRARIES NETTLE_LIBRARY HOGWEED_LIBRARY NETTLE_GMP_LIBRARY)