use custom module for Freetype2 detection

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

CMakeLists.txt

@@ -316,6 +316,9 @@ set_package_properties(ALSA PROPERTIES
     TYPE RECOMMENDED
 )
 
+# old versions of CMake ship bogus module, always use the custom one
+cmake_policy(PUSH)
+cmake_policy(SET CMP0017 OLD)
 find_package(Freetype)
 set_package_properties(Freetype PROPERTIES
     PURPOSE "Required for fonts configuration support"
@@ -323,6 +326,7 @@ set_package_properties(Freetype PROPERTIES
     URL "http://www.freetype.org"
     TYPE RECOMMENDED
 )
+cmake_policy(POP)
 
 find_package(Fontconfig)
 set_package_properties(Fontconfig PROPERTIES

cmake/modules/FindFreetype.cmake

@@ -0,0 +1,51 @@
+# - Try to find Freetype2
+# Once done this will define
+#
+#  FREETYPE_FOUND - system has Freetype2
+#  FREETYPE_INCLUDES - the Freetype2 include directory
+#  FREETYPE_LIBRARIES - The libraries needed to use Freetype2
+#
+# Copyright (c) 2015, Ivailo Monev, <xakepa10@gmail.com>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+
+if(FREETYPE_INCLUDES AND FREETYPE_LIBRARIES)
+    set(FREETYPE_FIND_QUIETLY TRUE)
+endif()
+
+if(NOT WIN32)
+    include(FindPkgConfig)
+    pkg_check_modules(PC_FREETYPE QUIET freetype2)
+endif()
+
+find_path(FREETYPE_INCLUDES
+    NAMES
+    freetype.h
+    PATH_SUFFIXES freetype2
+    HINTS
+    $ENV{FREETYPEDIR}/include
+    ${PC_FREETYPE_INCLUDEDIR}
+    /usr/include
+    /usr/local/include
+    ${INCLUDE_INSTALL_DIR}
+)
+
+find_library(FREETYPE_LIBRARIES
+    freetype
+    HINTS
+    $ENV{FREETYPEDIR}/lib
+    ${PC_FREETYPE_LIBDIR}
+    /usr/lib
+    /usr/local/lib
+    ${LIB_INSTALL_DIR}
+)
+
+# CMake still refers to its Freetype module, make it happy
+if(FREETYPE_INCLUDES)
+    set(FREETYPE_INCLUDE_DIRS ${FREETYPE_INCLUDES})
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Freetype2 DEFAULT_MSG FREETYPE_INCLUDES FREETYPE_LIBRARIES)
+
+mark_as_advanced(FREETYPE_INCLUDES FREETYPE_LIBRARIES)