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FindSDL2_image.cmake
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FindSDL2_image.cmake
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# Copyright 2019 Amine Ben Hassouna <amine.benhassouna@gmail.com>
# Copyright 2000-2019 Kitware, Inc. and Contributors
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of Kitware, Inc. nor the names of Contributors
# may be used to endorse or promote products derived from this
# software without specific prior written permission.
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#[=======================================================================[.rst:
FindSDL2_image
--------------
Locate SDL2_image library
This module defines the following 'IMPORTED' target:
::
SDL2::Image
The SDL2_image library, if found.
Have SDL2::Core as a link dependency.
This module will set the following variables in your project:
::
SDL2_IMAGE_LIBRARIES, the name of the library to link against
SDL2_IMAGE_INCLUDE_DIRS, where to find the headers
SDL2_IMAGE_FOUND, if false, do not try to link against
SDL2_IMAGE_VERSION_STRING - human-readable string containing the
version of SDL2_image
This module responds to the following cache variables:
::
SDL2_IMAGE_PATH
Set a custom SDL2_image Library path (default: empty)
SDL2_IMAGE_NO_DEFAULT_PATH
Disable search SDL2_image Library in default path.
If SDL2_IMAGE_PATH (default: ON)
Else (default: OFF)
SDL2_IMAGE_INCLUDE_DIR
SDL2_image headers path.
SDL2_IMAGE_LIBRARY
SDL2_image Library (.dll, .so, .a, etc) path.
Additional Note: If you see an empty SDL2_IMAGE_LIBRARY in your project
configuration, it means CMake did not find your SDL2_image library
(SDL2_image.dll, libsdl2_image.so, etc). Set SDL2_IMAGE_LIBRARY to point
to your SDL2_image library, and configure again. This value is used to
generate the final SDL2_IMAGE_LIBRARIES variable and the SDL2::Image target,
but when this value is unset, SDL2_IMAGE_LIBRARIES and SDL2::Image does not
get created.
$SDL2IMAGEDIR is an environment variable that would correspond to the
./configure --prefix=$SDL2IMAGEDIR used in building SDL2_image.
$SDL2DIR is an environment variable that would correspond to the
./configure --prefix=$SDL2DIR used in building SDL2.
Created by Amine Ben Hassouna:
Adapt FindSDL_image.cmake to SDL2_image (FindSDL2_image.cmake).
Add cache variables for more flexibility:
SDL2_IMAGE_PATH, SDL2_IMAGE_NO_DEFAULT_PATH (for details, see doc above).
Add SDL2 as a required dependency.
Modernize the FindSDL2_image.cmake module by creating a specific target:
SDL2::Image (for details, see doc above).
Original FindSDL_image.cmake module:
Created by Eric Wing. This was influenced by the FindSDL.cmake
module, but with modifications to recognize OS X frameworks and
additional Unix paths (FreeBSD, etc).
#]=======================================================================]
# SDL2 Library required
find_package(SDL2 QUIET)
if(NOT SDL2_FOUND)
set(SDL2_IMAGE_SDL2_NOT_FOUND "Could NOT find SDL2 (SDL2 is required by SDL2_image).")
if(SDL2_image_FIND_REQUIRED)
message(FATAL_ERROR ${SDL2_IMAGE_SDL2_NOT_FOUND})
else()
if(NOT SDL2_image_FIND_QUIETLY)
message(STATUS ${SDL2_IMAGE_SDL2_NOT_FOUND})
endif()
return()
endif()
unset(SDL2_IMAGE_SDL2_NOT_FOUND)
endif()
# Define options for searching SDL2_image Library in a custom path
set(SDL2_IMAGE_PATH "" CACHE STRING "Custom SDL2_image Library path")
set(_SDL2_IMAGE_NO_DEFAULT_PATH OFF)
if(SDL2_IMAGE_PATH)
set(_SDL2_IMAGE_NO_DEFAULT_PATH ON)
endif()
set(SDL2_IMAGE_NO_DEFAULT_PATH ${_SDL2_IMAGE_NO_DEFAULT_PATH}
CACHE BOOL "Disable search SDL2_image Library in default path")
unset(_SDL2_IMAGE_NO_DEFAULT_PATH)
set(SDL2_IMAGE_NO_DEFAULT_PATH_CMD)
if(SDL2_IMAGE_NO_DEFAULT_PATH)
set(SDL2_IMAGE_NO_DEFAULT_PATH_CMD NO_DEFAULT_PATH)
endif()
# Search for the SDL2_image include directory
find_path(SDL2_IMAGE_INCLUDE_DIR SDL_image.h
HINTS
ENV SDL2IMAGEDIR
ENV SDL2DIR
${SDL2_IMAGE_NO_DEFAULT_PATH_CMD}
PATH_SUFFIXES SDL2
# path suffixes to search inside ENV{SDL2DIR}
# and ENV{SDL2IMAGEDIR}
include/SDL2 include
PATHS ${SDL2_IMAGE_PATH}
DOC "Where the SDL2_image headers can be found"
)
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(VC_LIB_PATH_SUFFIX lib/x64)
else()
set(VC_LIB_PATH_SUFFIX lib/x86)
endif()
# Search for the SDL2_image library
find_library(SDL2_IMAGE_LIBRARY
NAMES SDL2_image
HINTS
ENV SDL2IMAGEDIR
ENV SDL2DIR
${SDL2_IMAGE_NO_DEFAULT_PATH_CMD}
PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
PATHS ${SDL2_IMAGE_PATH}
DOC "Where the SDL2_image Library can be found"
)
# Read SDL2_image version
if(SDL2_IMAGE_INCLUDE_DIR AND EXISTS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h")
file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h" SDL2_IMAGE_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_IMAGE_MAJOR_VERSION[ \t]+[0-9]+$")
file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h" SDL2_IMAGE_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_IMAGE_MINOR_VERSION[ \t]+[0-9]+$")
file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h" SDL2_IMAGE_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_IMAGE_PATCHLEVEL[ \t]+[0-9]+$")
string(REGEX REPLACE "^#define[ \t]+SDL_IMAGE_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_MAJOR "${SDL2_IMAGE_VERSION_MAJOR_LINE}")
string(REGEX REPLACE "^#define[ \t]+SDL_IMAGE_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_MINOR "${SDL2_IMAGE_VERSION_MINOR_LINE}")
string(REGEX REPLACE "^#define[ \t]+SDL_IMAGE_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_PATCH "${SDL2_IMAGE_VERSION_PATCH_LINE}")
set(SDL2_IMAGE_VERSION_STRING ${SDL2_IMAGE_VERSION_MAJOR}.${SDL2_IMAGE_VERSION_MINOR}.${SDL2_IMAGE_VERSION_PATCH})
unset(SDL2_IMAGE_VERSION_MAJOR_LINE)
unset(SDL2_IMAGE_VERSION_MINOR_LINE)
unset(SDL2_IMAGE_VERSION_PATCH_LINE)
unset(SDL2_IMAGE_VERSION_MAJOR)
unset(SDL2_IMAGE_VERSION_MINOR)
unset(SDL2_IMAGE_VERSION_PATCH)
endif()
set(SDL2_IMAGE_LIBRARIES ${SDL2_IMAGE_LIBRARY})
set(SDL2_IMAGE_INCLUDE_DIRS ${SDL2_IMAGE_INCLUDE_DIR})
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_image
REQUIRED_VARS SDL2_IMAGE_LIBRARIES SDL2_IMAGE_INCLUDE_DIRS
VERSION_VAR SDL2_IMAGE_VERSION_STRING)
mark_as_advanced(SDL2_IMAGE_PATH
SDL2_IMAGE_NO_DEFAULT_PATH
SDL2_IMAGE_LIBRARY
SDL2_IMAGE_INCLUDE_DIR)
if(SDL2_IMAGE_FOUND)
# SDL2::Image target
if(SDL2_IMAGE_LIBRARY AND NOT TARGET SDL2::Image)
add_library(SDL2::Image UNKNOWN IMPORTED)
set_target_properties(SDL2::Image PROPERTIES
IMPORTED_LOCATION "${SDL2_IMAGE_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${SDL2_IMAGE_INCLUDE_DIR}"
INTERFACE_LINK_LIBRARIES SDL2::Core)
endif()
endif()