diff --git a/cmake/FindLibIcal.cmake b/cmake/FindLibIcal.cmake
--- a/cmake/FindLibIcal.cmake
+++ b/cmake/FindLibIcal.cmake
@@ -4,8 +4,6 @@
 #  LibIcal_INCLUDE_DIRS - the Libical include directories
 #  LibIcal_LIBRARIES - The libraries needed to use Libical
 #  LibIcal_VERSION = The value of ICAL_VERSION defined in ical.h
-#  LibIcal_MAJOR_VERSION = The library major version number
-#  LibIcal_MINOR_VERSION = The library minor version number
 
 # Copyright (c) 2008,2010 Allen Winter <winter@kde.org>
 #
@@ -16,88 +14,80 @@
   set(LibIcal_FIND_VERSION "0.33")
 endif()
 
-if(WIN32)
-  file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _program_FILES_DIR)
-endif()
+find_package(PkgConfig QUIET)
 
-#set the root from the LibIcal_BASE environment
-file(TO_CMAKE_PATH "$ENV{LibIcal_BASE}" libical_root)
+pkg_check_modules(LibIcal libical>=${LibIcal_FIND_VERSION})
 
-#override the root from LibIcal_BASE defined to cmake
-if(DEFINED LibIcal_BASE)
-  file(TO_CMAKE_PATH "${LibIcal_BASE}" libical_root)
+if(NOT LibIcal_INCLUDE_DIRS)
+   set(LibIcal_INCLUDE_DIRS ${LibIcal_INCLUDEDIR})
 endif()
 
-find_path(LibIcal_INCLUDE_DIRS
-  NAMES libical/ical.h
-  HINTS ${libical_root}/include ${_program_FILES_DIR}/libical/include
-)
-
-find_library(LibIcal_LIBRARY
-  NAMES ical libical
-  HINTS
-    ${libical_root}/lib64 ${_program_FILES_DIR}/libical/lib64
-    ${libical_root}/lib ${_program_FILES_DIR}/libical/lib
-)
-
-find_library(LibIcalss_LIBRARY
-  NAMES icalss libicalss
-  HINTS
-    ${libical_root}/lib64 ${_program_FILES_DIR}/libical/lib64
-    ${libical_root}/lib ${_program_FILES_DIR}/libical/lib
-)
-
-set(LibIcal_LIBRARIES ${LibIcal_LIBRARY} ${LibIcalss_LIBRARY})
-
-if(LibIcal_INCLUDE_DIRS AND LibIcal_LIBRARIES)
-  set(FIND_LibIcal_VERSION_SOURCE
-    "#include <libical/ical.h>\n int main()\n {\n printf(\"%s\",ICAL_VERSION);return 1;\n }\n"
-  )
-  set(FIND_LibIcal_VERSION_SOURCE_FILE ${CMAKE_BINARY_DIR}/CMakeTmp/FindLIBICAL.cxx)
-  file(WRITE "${FIND_LibIcal_VERSION_SOURCE_FILE}" "${FIND_LibIcal_VERSION_SOURCE}")
-
-  set(FIND_LibIcal_VERSION_ADD_INCLUDES
-    "-DINCLUDE_DIRECTORIES:STRING=${LibIcal_INCLUDE_DIRS}")
-
-  if(NOT CMAKE_CROSSCOMPILING)
-  try_run(RUN_RESULT COMPILE_RESULT
-    ${CMAKE_BINARY_DIR}
-    ${FIND_LibIcal_VERSION_SOURCE_FILE}
-    CMAKE_FLAGS "${FIND_LibIcal_VERSION_ADD_INCLUDES}"
-    COMPILE_OUTPUT_VARIABLE FIND_LibIcal_Compile_Output
-    RUN_OUTPUT_VARIABLE LibIcal_VERSION)
-  endif()
-
-  if(COMPILE_RESULT AND RUN_RESULT EQUAL 1 AND NOT CMAKE_CROSSCOMPILING)
-    message(STATUS "Found Libical version ${LibIcal_VERSION}")
-    if(${LibIcal_VERSION} VERSION_LESS ${LibIcal_FIND_VERSION})
-      message(STATUS "LibIcal version ${LibIcal_VERSION} is too old. At least version ${LibIcal_FIND_VERSION} is needed.")
-      set(LibIcal_INCLUDE_DIRS "")
-      set(LibIcal_LIBRARIES "")
-    endif()
-    if(NOT LibIcal_VERSION VERSION_LESS 0.46)
-      set(USE_ICAL_0_46 TRUE)
-    endif()
-    if(NOT LibIcal_VERSION VERSION_LESS 1.00)
-      set(USE_ICAL_1_0 TRUE)
-    endif()
-
-  else()
-    if(NOT CMAKE_CROSSCOMPILING)
-      if(NOT COMPILE_RESULT)
-        message(FATAL_ERROR "Unable to compile the libical version detection program: ${FIND_LibIcal_Compile_Output}")
-      else()
-        message(FATAL_ERROR "Unable to run the libical version detection program: it returned ${RUN_RESULT}.")
-      endif()
-    endif()
-  endif()
-
-  #compute the major and minor version numbers
-  if(NOT CMAKE_CROSSCOMPILING)
-    string(REGEX REPLACE "\\..*$" "" LibIcal_MAJOR_VERSION ${LibIcal_VERSION})
-    string(REGEX REPLACE "^.*\\." "" LibIcal_MINOR_VERSION ${LibIcal_VERSION})
-  endif()
-
+if(NOT LibIcal_VERSION)
+   file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _program_FILES_DIR)
+   #set the root from the LibIcal_BASE environment
+   file(TO_CMAKE_PATH "$ENV{LibIcal_BASE}" libical_root)
+
+   #override the root from LibIcal_BASE defined to cmake
+   if(DEFINED LibIcal_BASE)
+     file(TO_CMAKE_PATH "${LibIcal_BASE}" libical_root)
+   endif()
+
+   find_path(LibIcal_INCLUDE_DIRS
+     NAMES libical/ical.h
+     HINTS ${libical_root}/include ${_program_FILES_DIR}/libical/include
+   )
+
+   find_library(LibIcal_LIBRARY
+     NAMES ical libical
+     HINTS
+       ${libical_root}/lib64 ${_program_FILES_DIR}/libical/lib64
+       ${libical_root}/lib ${_program_FILES_DIR}/libical/lib
+   )
+
+   find_library(LibIcalss_LIBRARY
+     NAMES icalss libicalss
+     HINTS
+       ${libical_root}/lib64 ${_program_FILES_DIR}/libical/lib64
+       ${libical_root}/lib ${_program_FILES_DIR}/libical/lib
+   )
+
+   set(LibIcal_LIBRARIES ${LibIcal_LIBRARY} ${LibIcalss_LIBRARY})
+
+   if(LibIcal_INCLUDE_DIRS AND LibIcal_LIBRARIES)
+     set(FIND_LibIcal_VERSION_SOURCE
+       "#include <libical/ical.h>\n int main()\n {\n printf(\"%s\",ICAL_VERSION);return 1;\n }\n"
+     )
+     set(FIND_LibIcal_VERSION_SOURCE_FILE ${CMAKE_BINARY_DIR}/CMakeTmp/FindLIBICAL.cxx)
+     file(WRITE "${FIND_LibIcal_VERSION_SOURCE_FILE}" "${FIND_LibIcal_VERSION_SOURCE}")
+
+     set(FIND_LibIcal_VERSION_ADD_INCLUDES
+       "-DINCLUDE_DIRECTORIES:STRING=${LibIcal_INCLUDE_DIRS}")
+
+     if(NOT CMAKE_CROSSCOMPILING)
+     try_run(RUN_RESULT COMPILE_RESULT
+       ${CMAKE_BINARY_DIR}
+       ${FIND_LibIcal_VERSION_SOURCE_FILE}
+       CMAKE_FLAGS "${FIND_LibIcal_VERSION_ADD_INCLUDES}"
+       COMPILE_OUTPUT_VARIABLE FIND_LibIcal_Compile_Output
+       RUN_OUTPUT_VARIABLE LibIcal_VERSION)
+     endif()
+
+     if(COMPILE_RESULT AND RUN_RESULT EQUAL 1 AND NOT CMAKE_CROSSCOMPILING)
+       if(${LibIcal_VERSION} VERSION_LESS ${LibIcal_FIND_VERSION})
+         message(STATUS "LibIcal version ${LibIcal_VERSION} is too old. At least version ${LibIcal_FIND_VERSION} is needed.")
+         set(LibIcal_INCLUDE_DIRS "")
+         set(LibIcal_LIBRARIES "")
+       endif()
+     else()
+       if(NOT CMAKE_CROSSCOMPILING)
+         if(NOT COMPILE_RESULT)
+           message(FATAL_ERROR "Unable to compile the libical version detection program: ${FIND_LibIcal_Compile_Output}")
+         else()
+           message(FATAL_ERROR "Unable to run the libical version detection program: it returned ${RUN_RESULT}.")
+         endif()
+       endif()
+     endif()
+   endif()
 endif()
 
 include(FindPackageHandleStandardArgs)
@@ -107,6 +97,16 @@
     REQUIRED_VARS LibIcal_LIBRARIES LibIcal_INCLUDE_DIRS
     VERSION_VAR LibIcal_VERSION
 )
+if(LibIcal_FOUND)
+  message(STATUS "Found Libical version ${LibIcal_VERSION}")
+  if(NOT LibIcal_VERSION VERSION_LESS 0.46)
+     set(USE_ICAL_0_46 TRUE)
+  endif()
+  if(NOT LibIcal_VERSION VERSION_LESS 1.00)
+     set(USE_ICAL_1_0 TRUE)
+  endif()
+endif()
+
 if(LibIcal_FOUND AND NOT TARGET LibIcal)
     add_library(LibIcal INTERFACE IMPORTED)
     set_target_properties(LibIcal PROPERTIES