projects / lttng-ust.git / blame
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|---|---|---|
| c2da416a SB |
1 | #.rst: |
| 2 | # FindLTTngUST | |
| 3 | # ------------ | |
| 4 | # | |
| 5 | # This module finds the `LTTng-UST <http://lttng.org/>`__ library. | |
| 6 | # | |
| 7 | # Imported target | |
| 8 | # ^^^^^^^^^^^^^^^ | |
| 9 | # | |
| 10 | # This module defines the following :prop_tgt:`IMPORTED` target: | |
| 11 | # | |
| 12 | # ``LTTng::UST`` | |
| 13 | # The LTTng-UST library, if found | |
| 14 | # | |
| 15 | # Result variables | |
| 16 | # ^^^^^^^^^^^^^^^^ | |
| 17 | # | |
| 18 | # This module sets the following | |
| 19 | # | |
| 20 | # ``LTTNGUST_FOUND`` | |
| 21 | # ``TRUE`` if system has LTTng-UST | |
| 22 | # ``LTTNGUST_INCLUDE_DIRS`` | |
| 23 | # The LTTng-UST include directories | |
| 24 | # ``LTTNGUST_LIBRARIES`` | |
| 25 | # The libraries needed to use LTTng-UST | |
| 26 | # ``LTTNGUST_VERSION_STRING`` | |
| 27 | # The LTTng-UST version | |
| 28 | # ``LTTNGUST_HAS_TRACEF`` | |
| 29 | # ``TRUE`` if the ``tracef()`` API is available in the system's LTTng-UST | |
| 30 | # ``LTTNGUST_HAS_TRACELOG`` | |
| 31 | # ``TRUE`` if the ``tracelog()`` API is available in the system's LTTng-UST | |
| 32 | ||
| 33 | #============================================================================= | |
| 34 | # Copyright 2016 Kitware, Inc. | |
| 35 | # Copyright 2016 Philippe Proulx <pproulx@efficios.com> | |
| 36 | # | |
| 37 | # Distributed under the OSI-approved BSD License (the "License"); | |
| 38 | # see accompanying file Copyright.txt for details. | |
| 39 | # | |
| 40 | # This software is distributed WITHOUT ANY WARRANTY; without even the | |
| 41 | # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| 42 | # See the License for more information. | |
| 43 | #============================================================================= | |
| 44 | # (To distribute this file outside of CMake, substitute the full | |
| 45 | # License text for the above reference.) | |
| 46 | ||
| 47 | find_path(LTTNGUST_INCLUDE_DIRS NAMES lttng/tracepoint.h) | |
| 988e748c JR |
48 | # Must also check for the path of generated header files since out-of-tree |
| 49 | # build is a possibility (Yocto). | |
| 50 | find_path(LTTNGUST_INCLUDE_DIRS_GENERATED NAMES lttng/ust-config.h) | |
| c2da416a SB |
51 | find_library(LTTNGUST_LIBRARIES NAMES lttng-ust) |
| 52 | ||
| 988e748c | 53 | if(LTTNGUST_INCLUDE_DIRS AND LTTNGUST_INCLUDE_DIRS_GENERATED AND LTTNGUST_LIBRARIES) |
| c2da416a SB |
54 | # find tracef() and tracelog() support |
| 55 | set(LTTNGUST_HAS_TRACEF 0) | |
| 56 | set(LTTNGUST_HAS_TRACELOG 0) | |
| 57 | ||
| 58 | if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracef.h") | |
| 59 | set(LTTNGUST_HAS_TRACEF TRUE) | |
| 60 | endif() | |
| 61 | ||
| 62 | if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracelog.h") | |
| 63 | set(LTTNGUST_HAS_TRACELOG TRUE) | |
| 64 | endif() | |
| 65 | ||
| 66 | # get version | |
| 988e748c | 67 | set(lttngust_version_file "${LTTNGUST_INCLUDE_DIRS_GENERATED}/lttng/ust-version.h") |
| c2da416a SB |
68 | |
| 69 | if(EXISTS "${lttngust_version_file}") | |
| 70 | file(STRINGS "${lttngust_version_file}" lttngust_version_major_string | |
| 71 | REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MAJOR_VERSION[\t ]+[0-9]+[\t ]*$") | |
| 72 | file(STRINGS "${lttngust_version_file}" lttngust_version_minor_string | |
| 73 | REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MINOR_VERSION[\t ]+[0-9]+[\t ]*$") | |
| 74 | file(STRINGS "${lttngust_version_file}" lttngust_version_patch_string | |
| 75 | REGEX "^[\t ]*#define[\t ]+LTTNG_UST_PATCHLEVEL_VERSION[\t ]+[0-9]+[\t ]*$") | |
| 76 | string(REGEX REPLACE ".*([0-9]+).*" "\\1" | |
| 77 | lttngust_v_major "${lttngust_version_major_string}") | |
| 78 | string(REGEX REPLACE ".*([0-9]+).*" "\\1" | |
| 79 | lttngust_v_minor "${lttngust_version_minor_string}") | |
| 80 | string(REGEX REPLACE ".*([0-9]+).*" "\\1" | |
| 81 | lttngust_v_patch "${lttngust_version_patch_string}") | |
| 82 | set(LTTNGUST_VERSION_STRING | |
| 83 | "${lttngust_v_major}.${lttngust_v_minor}.${lttngust_v_patch}") | |
| 84 | unset(lttngust_version_major_string) | |
| 85 | unset(lttngust_version_minor_string) | |
| 86 | unset(lttngust_version_patch_string) | |
| 87 | unset(lttngust_v_major) | |
| 88 | unset(lttngust_v_minor) | |
| 89 | unset(lttngust_v_patch) | |
| 988e748c JR |
90 | else() |
| 91 | message(FATAL_ERROR "Missing version header") | |
| c2da416a SB |
92 | endif() |
| 93 | ||
| 94 | unset(lttngust_version_file) | |
| 95 | ||
| 96 | if(NOT TARGET LTTng::UST) | |
| 97 | add_library(LTTng::UST UNKNOWN IMPORTED) | |
| 98 | set_target_properties(LTTng::UST PROPERTIES | |
| 988e748c | 99 | INTERFACE_INCLUDE_DIRECTORIES "${LTTNGUST_INCLUDE_DIRS};${LTTNGUST_INCLUDE_DIRS_GENERATED}" |
| c2da416a SB |
100 | INTERFACE_LINK_LIBRARIES ${CMAKE_DL_LIBS} |
| 101 | IMPORTED_LINK_INTERFACE_LANGUAGES "C" | |
| 102 | IMPORTED_LOCATION "${LTTNGUST_LIBRARIES}") | |
| 103 | endif() | |
| 104 | ||
| 105 | # add libdl to required libraries | |
| 106 | set(LTTNGUST_LIBRARIES ${LTTNGUST_LIBRARIES} ${CMAKE_DL_LIBS}) | |
| 107 | endif() | |
| 108 | ||
| 109 | # handle the QUIETLY and REQUIRED arguments and set LTTNGUST_FOUND to | |
| 110 | # TRUE if all listed variables are TRUE | |
| 111 | include(FindPackageHandleStandardArgs) | |
| 112 | find_package_handle_standard_args(LTTngUST FOUND_VAR LTTNGUST_FOUND | |
| 113 | REQUIRED_VARS LTTNGUST_LIBRARIES | |
| 114 | LTTNGUST_INCLUDE_DIRS | |
| 115 | VERSION_VAR LTTNGUST_VERSION_STRING) | |
| 116 | mark_as_advanced(LTTNGUST_LIBRARIES LTTNGUST_INCLUDE_DIRS) |