mirror of
https://github.com/ceph/ceph
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112 lines
4.0 KiB
CMake
112 lines
4.0 KiB
CMake
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#.rst:
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# FindLTTngUST
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# ------------
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#
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# This module finds the `LTTng-UST <http://lttng.org/>`__ library.
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#
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# Imported target
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# ^^^^^^^^^^^^^^^
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#
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# This module defines the following :prop_tgt:`IMPORTED` target:
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#
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# ``LTTng::UST``
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# The LTTng-UST library, if found
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#
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# Result variables
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# ^^^^^^^^^^^^^^^^
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#
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# This module sets the following
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#
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# ``LTTNGUST_FOUND``
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# ``TRUE`` if system has LTTng-UST
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# ``LTTNGUST_INCLUDE_DIRS``
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# The LTTng-UST include directories
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# ``LTTNGUST_LIBRARIES``
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# The libraries needed to use LTTng-UST
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# ``LTTNGUST_VERSION_STRING``
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# The LTTng-UST version
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# ``LTTNGUST_HAS_TRACEF``
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# ``TRUE`` if the ``tracef()`` API is available in the system's LTTng-UST
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# ``LTTNGUST_HAS_TRACELOG``
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# ``TRUE`` if the ``tracelog()`` API is available in the system's LTTng-UST
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#=============================================================================
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# Copyright 2016 Kitware, Inc.
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# Copyright 2016 Philippe Proulx <pproulx@efficios.com>
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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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find_path(LTTNGUST_INCLUDE_DIRS NAMES lttng/tracepoint.h)
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find_library(LTTNGUST_LIBRARIES NAMES lttng-ust)
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if(LTTNGUST_INCLUDE_DIRS AND LTTNGUST_LIBRARIES)
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# find tracef() and tracelog() support
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set(LTTNGUST_HAS_TRACEF 0)
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set(LTTNGUST_HAS_TRACELOG 0)
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if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracef.h")
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set(LTTNGUST_HAS_TRACEF TRUE)
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endif()
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if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracelog.h")
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set(LTTNGUST_HAS_TRACELOG TRUE)
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endif()
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# get version
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set(lttngust_version_file "${LTTNGUST_INCLUDE_DIRS}/lttng/ust-version.h")
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if(EXISTS "${lttngust_version_file}")
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file(STRINGS "${lttngust_version_file}" lttngust_version_major_string
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REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MAJOR_VERSION[\t ]+[0-9]+[\t ]*$")
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file(STRINGS "${lttngust_version_file}" lttngust_version_minor_string
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REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MINOR_VERSION[\t ]+[0-9]+[\t ]*$")
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file(STRINGS "${lttngust_version_file}" lttngust_version_patch_string
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REGEX "^[\t ]*#define[\t ]+LTTNG_UST_PATCHLEVEL_VERSION[\t ]+[0-9]+[\t ]*$")
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string(REGEX REPLACE ".*([0-9]+).*" "\\1"
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lttngust_v_major "${lttngust_version_major_string}")
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string(REGEX REPLACE ".*([0-9]+).*" "\\1"
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lttngust_v_minor "${lttngust_version_minor_string}")
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string(REGEX REPLACE ".*([0-9]+).*" "\\1"
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lttngust_v_patch "${lttngust_version_patch_string}")
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set(LTTNGUST_VERSION_STRING
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"${lttngust_v_major}.${lttngust_v_minor}.${lttngust_v_patch}")
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unset(lttngust_version_major_string)
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unset(lttngust_version_minor_string)
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unset(lttngust_version_patch_string)
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unset(lttngust_v_major)
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unset(lttngust_v_minor)
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unset(lttngust_v_patch)
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endif()
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unset(lttngust_version_file)
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if(NOT TARGET LTTng::UST)
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add_library(LTTng::UST UNKNOWN IMPORTED)
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set_target_properties(LTTng::UST PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${LTTNGUST_INCLUDE_DIRS}"
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INTERFACE_LINK_LIBRARIES ${CMAKE_DL_LIBS}
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${LTTNGUST_LIBRARIES}")
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endif()
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# add libdl to required libraries
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set(LTTNGUST_LIBRARIES ${LTTNGUST_LIBRARIES} ${CMAKE_DL_LIBS})
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endif()
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# handle the QUIETLY and REQUIRED arguments and set LTTNGUST_FOUND to
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# TRUE if all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(LTTngUST FOUND_VAR LTTNGUST_FOUND
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REQUIRED_VARS LTTNGUST_LIBRARIES
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LTTNGUST_INCLUDE_DIRS
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VERSION_VAR LTTNGUST_VERSION_STRING)
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mark_as_advanced(LTTNGUST_LIBRARIES LTTNGUST_INCLUDE_DIRS)
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