blob: 117ded76d67227d8c6c68356c5ac36767d8d0814 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
#.rst:
# FindGIF
# -------
#
#
#
# This module searches giflib and defines GIF_LIBRARIES - libraries to
# link to in order to use GIF GIF_FOUND, if false, do not try to link
# GIF_INCLUDE_DIR, where to find the headers GIF_VERSION, reports either
# version 4 or 3 (for everything before version 4)
#
# The minimum required version of giflib can be specified using the
# standard syntax, e.g. find_package(GIF 4)
#
# $GIF_DIR is an environment variable that would correspond to the
# ./configure --prefix=$GIF_DIR
#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# Created by Eric Wing.
# Modifications by Alexander Neundorf
find_path(GIF_INCLUDE_DIR gif_lib.h
HINTS
ENV GIF_DIR
PATH_SUFFIXES include
PATHS
~/Library/Frameworks
/usr/freeware
)
# the gif library can have many names :-/
set(POTENTIAL_GIF_LIBS gif libgif ungif libungif giflib giflib4)
find_library(GIF_LIBRARY
NAMES ${POTENTIAL_GIF_LIBS}
HINTS
ENV GIF_DIR
PATH_SUFFIXES lib
PATHS
~/Library/Frameworks
/usr/freeware
)
# see readme.txt
set(GIF_LIBRARIES ${GIF_LIBRARY})
# Very basic version detection.
# The GIF_LIB_VERSION string in gif_lib.h seems to be unreliable, since it seems
# to be always " Version 2.0, " in versions 3.x of giflib.
# In version 4 the member UserData was added to GifFileType, so we check for this
# one.
# http://giflib.sourcearchive.com/documentation/4.1.4/files.html
if(GIF_INCLUDE_DIR)
include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
include(${CMAKE_CURRENT_LIST_DIR}/CheckStructHasMember.cmake)
CMAKE_PUSH_CHECK_STATE()
set(GIF_VERSION 3)
set(CMAKE_REQUIRED_INCLUDES "${GIF_INCLUDE_DIR}")
CHECK_STRUCT_HAS_MEMBER(GifFileType UserData gif_lib.h GIF_GifFileType_UserData )
if(GIF_GifFileType_UserData)
set(GIF_VERSION 4)
endif()
CMAKE_POP_CHECK_STATE()
endif()
# handle the QUIETLY and REQUIRED arguments and set GIF_FOUND to TRUE if
# all listed variables are TRUE
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GIF REQUIRED_VARS GIF_LIBRARY GIF_INCLUDE_DIR
VERSION_VAR GIF_VERSION )
mark_as_advanced(GIF_INCLUDE_DIR GIF_LIBRARY)
|
