mirror of
https://github.com/reactos/CMake.git
synced 2024-11-25 12:40:06 +00:00
b04650e163
Instead of directly passing $ENV{SOMEVAR} to a find_* call pass in ENV SOMEVAR.
This will make sure the paths will get correctly handled through different
platforms, especially on Windows.
Also fixes one place where paths with windows delimiters (\) were hardcoded to
use forward slashes.
81 lines
2.6 KiB
CMake
81 lines
2.6 KiB
CMake
# This module searches giflib and defines
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# GIF_LIBRARIES - libraries to link to in order to use GIF
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# GIF_FOUND, if false, do not try to link
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# GIF_INCLUDE_DIR, where to find the headers
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# GIF_VERSION, reports either version 4 or 3 (for everything before version 4)
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#
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# The minimum required version of giflib can be specified using the
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# standard syntax, e.g. find_package(GIF 4)
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#
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# $GIF_DIR is an environment variable that would
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# correspond to the ./configure --prefix=$GIF_DIR
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#=============================================================================
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# Copyright 2007-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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# Created by Eric Wing.
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# Modifications by Alexander Neundorf
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find_path(GIF_INCLUDE_DIR gif_lib.h
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HINTS
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ENV GIF_DIR
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PATH_SUFFIXES include
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PATHS
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~/Library/Frameworks
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/usr/freeware
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)
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# the gif library can have many names :-/
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set(POTENTIAL_GIF_LIBS gif libgif ungif libungif giflib giflib4)
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find_library(GIF_LIBRARY
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NAMES ${POTENTIAL_GIF_LIBS}
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HINTS
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ENV GIF_DIR
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PATH_SUFFIXES lib64 lib
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PATHS
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~/Library/Frameworks
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/usr/freeware
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)
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# see readme.txt
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set(GIF_LIBRARIES ${GIF_LIBRARY})
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# Very basic version detection.
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# The GIF_LIB_VERSION string in gif_lib.h seems to be unreliable, since it seems
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# to be always " Version 2.0, " in versions 3.x of giflib.
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# In version 4 the member UserData was added to GifFileType, so we check for this
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# one.
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# http://giflib.sourcearchive.com/documentation/4.1.4/files.html
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if(GIF_INCLUDE_DIR)
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include(CMakePushCheckState)
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include(CheckStructHasMember)
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CMAKE_PUSH_CHECK_STATE()
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set(GIF_VERSION 3)
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set(CMAKE_REQUIRED_INCLUDES "${GIF_INCLUDE_DIR}")
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CHECK_STRUCT_HAS_MEMBER(GifFileType UserData gif_lib.h GIF_GifFileType_UserData )
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if(GIF_GifFileType_UserData)
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set(GIF_VERSION 4)
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endif()
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CMAKE_POP_CHECK_STATE()
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endif()
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# handle the QUIETLY and REQUIRED arguments and set GIF_FOUND to TRUE if
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# all listed variables are TRUE
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(GIF REQUIRED_VARS GIF_LIBRARY GIF_INCLUDE_DIR
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VERSION_VAR GIF_VERSION )
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mark_as_advanced(GIF_INCLUDE_DIR GIF_LIBRARY)
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