Commit 68b06b05 authored by Ben Boeckel's avatar Ben Boeckel

FindFreetype: backport from CMake, but with local changes

parent 39d59b18
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# XXX: Copied from CMake, but includes vtkDetectLibraryType.
# See https://gitlab.kitware.com/cmake/cmake/issues/18564
#[=======================================================================[.rst:
FindFreetype
------------
Find the FreeType font renderer includes and library.
Imported Targets
^^^^^^^^^^^^^^^^
This module defines the following :prop_tgt:`IMPORTED` target:
``Freetype::Freetype``
The Freetype ``freetype`` library, if found
Result Variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``FREETYPE_FOUND``
true if the Freetype headers and libraries were found
``FREETYPE_INCLUDE_DIRS``
directories containing the Freetype headers. This is the
concatenation of the variables:
``FREETYPE_INCLUDE_DIR_ft2build``
directory holding the main Freetype API configuration header
``FREETYPE_INCLUDE_DIR_freetype2``
directory holding Freetype public headers
``FREETYPE_LIBRARIES``
the library to link against
``FREETYPE_VERSION_STRING``
the version of freetype found (since CMake 2.8.8)
Hints
^^^^^
The user may set the environment variable ``FREETYPE_DIR`` to the root
directory of a Freetype installation.
#]=======================================================================]
# Created by Eric Wing.
# Modifications by Alexander Neundorf.
# This file has been renamed to "FindFreetype.cmake" instead of the correct
# "FindFreeType.cmake" in order to be compatible with the one from KDE4, Alex.
# 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.
set(FREETYPE_FIND_ARGS
HINTS
ENV FREETYPE_DIR
PATHS
ENV GTKMM_BASEPATH
[HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]
[HKEY_LOCAL_MACHINE\\SOFTWARE\\gtkmm\\2.4;Path]
)
find_path(
FREETYPE_INCLUDE_DIR_ft2build
ft2build.h
${FREETYPE_FIND_ARGS}
PATH_SUFFIXES
include/freetype2
include
freetype2
)
find_path(
FREETYPE_INCLUDE_DIR_freetype2
NAMES
freetype/config/ftheader.h
config/ftheader.h
${FREETYPE_FIND_ARGS}
PATH_SUFFIXES
include/freetype2
include
freetype2
)
if(NOT FREETYPE_LIBRARY)
find_library(FREETYPE_LIBRARY_RELEASE
NAMES
freetype
libfreetype
freetype219
${FREETYPE_FIND_ARGS}
PATH_SUFFIXES
lib
)
find_library(FREETYPE_LIBRARY_DEBUG
NAMES
freetyped
libfreetyped
freetype219d
${FREETYPE_FIND_ARGS}
PATH_SUFFIXES
lib
)
include(SelectLibraryConfigurations)
select_library_configurations(FREETYPE)
else()
# on Windows, ensure paths are in canonical format (forward slahes):
file(TO_CMAKE_PATH "${FREETYPE_LIBRARY}" FREETYPE_LIBRARY)
endif()
unset(FREETYPE_FIND_ARGS)
# 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}")
list(REMOVE_DUPLICATES FREETYPE_INCLUDE_DIRS)
endif()
set(FREETYPE_LIBRARIES "${FREETYPE_LIBRARY}")
if(EXISTS "${FREETYPE_INCLUDE_DIR_freetype2}/freetype/freetype.h")
set(FREETYPE_H "${FREETYPE_INCLUDE_DIR_freetype2}/freetype/freetype.h")
elseif(EXISTS "${FREETYPE_INCLUDE_DIR_freetype2}/freetype.h")
set(FREETYPE_H "${FREETYPE_INCLUDE_DIR_freetype2}/freetype.h")
endif()
if(FREETYPE_INCLUDE_DIR_freetype2 AND FREETYPE_H)
file(STRINGS "${FREETYPE_H}" freetype_version_str
REGEX "^#[\t ]*define[\t ]+FREETYPE_(MAJOR|MINOR|PATCH)[\t ]+[0-9]+$")
unset(FREETYPE_VERSION_STRING)
foreach(VPART MAJOR MINOR PATCH)
foreach(VLINE ${freetype_version_str})
if(VLINE MATCHES "^#[\t ]*define[\t ]+FREETYPE_${VPART}[\t ]+([0-9]+)$")
set(FREETYPE_VERSION_PART "${CMAKE_MATCH_1}")
if(FREETYPE_VERSION_STRING)
string(APPEND FREETYPE_VERSION_STRING ".${FREETYPE_VERSION_PART}")
else()
set(FREETYPE_VERSION_STRING "${FREETYPE_VERSION_PART}")
endif()
unset(FREETYPE_VERSION_PART)
endif()
endforeach()
endforeach()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
Freetype
REQUIRED_VARS
FREETYPE_LIBRARY
FREETYPE_INCLUDE_DIRS
VERSION_VAR
FREETYPE_VERSION_STRING
)
mark_as_advanced(
FREETYPE_INCLUDE_DIR_freetype2
FREETYPE_INCLUDE_DIR_ft2build
)
if(Freetype_FOUND)
if(NOT TARGET Freetype::Freetype)
include(vtkDetectLibraryType)
vtk_detect_library_type(freetype_library_type
PATH "${FREETYPE_LIBRARY_RELEASE}")
add_library(Freetype::Freetype "${freetype_library_type}" IMPORTED)
unset(freetype_library_type)
set_target_properties(Freetype::Freetype PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${FREETYPE_INCLUDE_DIRS}")
if(FREETYPE_LIBRARY_RELEASE)
set_property(TARGET Freetype::Freetype APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(Freetype::Freetype PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C"
IMPORTED_LOCATION_RELEASE "${FREETYPE_LIBRARY_RELEASE}")
endif()
if(FREETYPE_LIBRARY_DEBUG)
set_property(TARGET Freetype::Freetype APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(Freetype::Freetype PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "C"
IMPORTED_LOCATION_DEBUG "${FREETYPE_LIBRARY_DEBUG}")
endif()
if(NOT FREETYPE_LIBRARY_RELEASE AND NOT FREETYPE_LIBRARY_DEBUG)
set_target_properties(Freetype::Freetype PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${FREETYPE_LIBRARY}")
endif()
endif()
endif()
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