CMake/Modules/FindFreetype.cmake

# - Locate FreeType library
# This module defines
#  FREETYPE_LIBRARIES, the library to link against
#  FREETYPE_FOUND, if false, do not try to link to FREETYPE
#  FREETYPE_INCLUDE_DIRS, where to find headers.
#  This is the concatenation of the paths:
#  FREETYPE_INCLUDE_DIR_ft2build
#  FREETYPE_INCLUDE_DIR_freetype2
#
# $FREETYPE_DIR is an environment variable that would
# correspond to the ./configure --prefix=$FREETYPE_DIR
# used in building FREETYPE.
# Created by Eric Wing. 

# Ugh, FreeType seems to use some #include trickery which 
# makes this harder than it should be. It looks like they
# put ft2build.h in a common/easier-to-find location which
# then contains a #include to a more specific header in a 
# more specific location (#include <freetype/config/ftheader.h>).
# Then from there, they need to set a bunch of #define's 
# so you can do something like:
# #include FT_FREETYPE_H
# Unfortunately, using CMake's mechanisms like INCLUDE_DIRECTORIES()
# wants explicit full paths and this trickery doesn't work too well.
# I'm going to attempt to cut out the middleman and hope 
# everything still works.
FIND_PATH(FREETYPE_INCLUDE_DIR_ft2build ft2build.h 
  $ENV{FREETYPE_DIR}
  NO_DEFAULT_PATH
  PATH_SUFFIXES include    
)
FIND_PATH(FREETYPE_INCLUDE_DIR_ft2build ft2build.h 
  PATHS ${CMAKE_PREFIX_PATH}/include # Unofficial: We are proposing this.
  NO_DEFAULT_PATH
)

FIND_PATH(FREETYPE_INCLUDE_DIR_ft2build ft2build.h 
  PATHS
  /usr/local/X11R6/include
  /usr/local/X11/include
  /usr/X11/include
  /sw/include
  /opt/local/include
  /usr/freeware/include
)

FIND_PATH(FREETYPE_INCLUDE_DIR_freetype2 freetype/config/ftheader.h 
  $ENV{FREETYPE_DIR}/include/freetype2
  NO_DEFAULT_PATH
)
FIND_PATH(FREETYPE_INCLUDE_DIR_freetype2 freetype/config/ftheader.h 
  PATHS ${CMAKE_PREFIX_PATH}/include # Unofficial: We are proposing this.
  NO_DEFAULT_PATH
  PATH_SUFFIXES freetype2
)
FIND_PATH(FREETYPE_INCLUDE_DIR_freetype2 freetype/config/ftheader.h 
  /usr/local/X11R6/include
  /usr/local/X11/include
  /usr/X11/include
  /sw/include
  /opt/local/include
  /usr/freeware/include
  PATH_SUFFIXES freetype2
)

FIND_LIBRARY(FREETYPE_LIBRARY
  NAMES freetype libfreetype freetype219
  PATHS
  $ENV{FREETYPE_DIR}
  NO_DEFAULT_PATH
  PATH_SUFFIXES lib64 lib 
)
FIND_LIBRARY(FREETYPE_LIBRARY
  NAMES freetype libfreetype freetype219
  PATHS ${CMAKE_PREFIX_PATH} # Unofficial: We are proposing this.
  NO_DEFAULT_PATH
  PATH_SUFFIXES lib64 lib 
)
FIND_LIBRARY(FREETYPE_LIBRARY
  NAMES freetype libfreetype freetype219
  PATHS
  /usr/local
  /usr
  /usr/local/X11R6
  /usr/local/X11
  /usr/X11R6
  /usr/X11
  /sw
  /opt/local
  /opt/csw
  /opt
  /usr/freeware
  PATH_SUFFIXES lib64 lib
)

# set the user variables
IF(FREETYPE_INCLUDE_DIR_ft2build AND FREETYPE_INCLUDE_DIR_freetype2)
  SET(FREETYPE_INCLUDE_DIRS "${FREETYPE_INCLUDE_DIR_ft2build};${FREETYPE_INCLUDE_DIR_freetype2}")
ENDIF(FREETYPE_INCLUDE_DIR_ft2build AND FREETYPE_INCLUDE_DIR_freetype2)
SET(FREETYPE_LIBRARIES "${FREETYPE_LIBRARY}")

# handle the QUIETLY and REQUIRED arguments and set PERLLIBS_FOUND to TRUE if 
# all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Freetype  DEFAULT_MSG  FREETYPE_LIBRARY  FREETYPE_INCLUDE_DIRS)


MARK_AS_ADVANCED(FREETYPE_LIBRARY FREETYPE_INCLUDE_DIR_freetype2 FREETYPE_INCLUDE_DIR_ft2build)