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# - Find LTTng
# Find the Linux Trace Toolkit - next generation with associated includes path.
# See http://lttng.org/
#
# This module accepts the following optional variables:
# LTTNG_PATH_HINT = A hint on LTTNG install path.
#
# This module defines the following variables:
# LTTNG_FOUND = Was LTTng found or not?
# LTTNG_EXECUTABLE = The path to lttng command
# LTTNG_LIBRARIES = The list of libraries to link to when using LTTng
# LTTNG_INCLUDE_DIR = The path to LTTng include directory
#
# On can set LTTNG_PATH_HINT before using find_package(LTTng) and the
# module with use the PATH as a hint to find LTTng.
#
# The hint can be given on the command line too:
# cmake -DLTTNG_PATH_HINT=/DATA/ERIC/LTTng /path/to/source
find_package(PkgConfig)
pkg_check_modules(PC_LTTNG QUIET lttng-ust)
find_path(LTTNG_INCLUDE_DIR
NAMES lttng/tracepoint.h
HINTS ${PC_LTTNG_INCLUDEDIR} ${PC_LTTNG_INCLUDE_DIRS}
PATH_SUFFIXES include
DOC "The LTTng include headers")
find_path(LTTNG_LIBRARY_DIR
NAMES liblttng-ust.so
HINTS ${PC_LTTNG_LIBDIR} ${PC_LTTNG_LIBRARY_DIRS}
DOC "The LTTng libraries")
find_library(LTTNG_UST_LIBRARY lttng-ust PATHS ${LTTNG_LIBRARY_DIR})
find_library(URCU_LIBRARY urcu-bp PATHS ${LTTNG_LIBRARY_DIR})
find_library(UUID_LIBRARY uuid)
set(LTTNG_LIBRARIES ${LTTNG_UST_LIBRARY} ${URCU_LIBRARY} ${UUID_LIBRARY})
message(STATUS "Looking for lttng executable...")
set(LTTNG_NAMES "lttng;lttng-ctl")
# FIND_PROGRAM twice using NO_DEFAULT_PATH on first shot
find_program(LTTNG_EXECUTABLE
NAMES ${LTTNG_NAMES}
PATHS ${LTTNG_PATH_HINT}/bin
NO_DEFAULT_PATH
DOC "The LTTNG command line tool")
find_program(LTTNG_PROGRAM
NAMES ${LTTNG_NAMES}
PATHS ${LTTNG_PATH_HINT}/bin
DOC "The LTTNG command line tool")
# handle the QUIETLY and REQUIRED arguments and set LTTNG_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LTTNG DEFAULT_MSG LTTNG_INCLUDE_DIR LTTNG_LIBRARY_DIR)
if (NOT LTTNG_FOUND)
if (LTTng_FIND_REQUIRED)
message(FATAL_ERROR "LTTng not found")
endif ()
endif ()
mark_as_advanced(LTTNG_INCLUDE_DIR)
mark_as_advanced(LTTNG_LIBRARY_DIR)
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