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104 lines
3.4 KiB
104 lines
3.4 KiB
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindOpenThreads
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---------------
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OpenThreads is a C++ based threading library. Its largest userbase
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seems to OpenSceneGraph so you might notice I accept OSGDIR as an
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environment path. I consider this part of the Findosg* suite used to
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find OpenSceneGraph components. Each component is separate and you
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must opt in to each module.
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Locate OpenThreads This module defines OPENTHREADS_LIBRARY
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OPENTHREADS_FOUND, if false, do not try to link to OpenThreads
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OPENTHREADS_INCLUDE_DIR, where to find the headers
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$OPENTHREADS_DIR is an environment variable that would correspond to
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the ./configure --prefix=$OPENTHREADS_DIR used in building osg.
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[CMake 2.8.10]: The CMake variables OPENTHREADS_DIR or OSG_DIR can now
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be used as well to influence detection, instead of needing to specify
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an environment variable.
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Created by Eric Wing.
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#]=======================================================================]
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# Header files are presumed to be included like
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# #include <OpenThreads/Thread>
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# To make it easier for one-step automated configuration/builds,
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# we leverage environmental paths. This is preferable
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# to the -DVAR=value switches because it insulates the
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# users from changes we may make in this script.
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# It also offers a little more flexibility than setting
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# the CMAKE_*_PATH since we can target specific components.
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# However, the default CMake behavior will search system paths
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# before anything else. This is problematic in the cases
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# where you have an older (stable) version installed, but
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# are trying to build a newer version.
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# CMake doesn't offer a nice way to globally control this behavior
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# so we have to do a nasty "double FIND_" in this module.
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# The first FIND disables the CMAKE_ search paths and only checks
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# the environmental paths.
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# If nothing is found, then the second find will search the
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# standard install paths.
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# Explicit -DVAR=value arguments should still be able to override everything.
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include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
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find_path(OPENTHREADS_INCLUDE_DIR OpenThreads/Thread
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HINTS
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ENV OPENTHREADS_INCLUDE_DIR
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ENV OPENTHREADS_DIR
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ENV OSG_INCLUDE_DIR
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ENV OSG_DIR
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ENV OSGDIR
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ENV OpenThreads_ROOT
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ENV OSG_ROOT
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${OPENTHREADS_DIR}
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${OSG_DIR}
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PATH_SUFFIXES include
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)
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find_library(OPENTHREADS_LIBRARY_RELEASE
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NAMES OpenThreads OpenThreadsWin32
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HINTS
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ENV OPENTHREADS_LIBRARY_DIR
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ENV OPENTHREADS_DIR
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ENV OSG_LIBRARY_DIR
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ENV OSG_DIR
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ENV OSGDIR
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ENV OpenThreads_ROOT
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ENV OSG_ROOT
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${OPENTHREADS_DIR}
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${OSG_DIR}
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PATH_SUFFIXES lib
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)
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find_library(OPENTHREADS_LIBRARY_DEBUG
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NAMES OpenThreadsd OpenThreadsWin32d
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HINTS
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ENV OPENTHREADS_DEBUG_LIBRARY_DIR
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ENV OPENTHREADS_LIBRARY_DIR
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ENV OPENTHREADS_DIR
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ENV OSG_LIBRARY_DIR
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ENV OSG_DIR
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ENV OSGDIR
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ENV OpenThreads_ROOT
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ENV OSG_ROOT
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${OPENTHREADS_DIR}
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${OSG_DIR}
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PATH_SUFFIXES lib
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)
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select_library_configurations(OPENTHREADS)
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenThreads DEFAULT_MSG
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OPENTHREADS_LIBRARY OPENTHREADS_INCLUDE_DIR)
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