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a2706c7e16
* Findlttng-ust.cmake: detect lttng-gen-tp, and make it a required var
* Findlttng-ust.cmake: fix the detection of lttng
* src/tracing/CMakeLists.txt:
- do not put the generated header files into ${CMAKE_SOURCE_DIR}/src/tracing,
instead we should put the generated files into ${PROJECT_BINARY_DIR}/include.
- do not compile the tracing library using the .c files in the repo,
instead, we should generate them at compile time using lttng-gen-tp,
and compile the genererated .c files.
* CMakeLists.txt: make the lttng-use package REQUIRED if WITH_LTTNG=ON
* src/CMakeLists.txt: let librados depend on librados-tp if LTTNG is
enabled: librados includes tracing/librados.h. the same applies to
librbd, libos and libosd. cmake could deduce the dependencies if we
add the lttng header files under include/tracing into the
corresponding target, as the lttng header files are already listed
as OUTPUT and GENERATED files, but this requires us to put all the
involved targets in the same CMakeLists.txt. in this case, three
CMakeLists.txts are impacted. so we create a new target for each
lttng header, and let the impacted target depend on it.
Signed-off-by: Kefu Chai <kchai@redhat.com>
72 lines
2.5 KiB
CMake
72 lines
2.5 KiB
CMake
# - Find LTTng
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# Find the Linux Trace Toolkit - next generation with associated includes path.
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# See http://lttng.org/
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#
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# This module accepts the following optional variables:
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# LTTNG_PATH_HINT = A hint on LTTNG install path.
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#
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# This module defines the following variables:
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# LTTNG_FOUND = Was LTTng found or not?
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# LTTNG_EXECUTABLE = The path to lttng command
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# LTTNG_LIBRARIES = The list of libraries to link to when using LTTng
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# LTTNG_INCLUDE_DIR = The path to LTTng include directory
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#
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# On can set LTTNG_PATH_HINT before using find_package(LTTng) and the
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# module with use the PATH as a hint to find LTTng.
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#
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# The hint can be given on the command line too:
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# cmake -DLTTNG_PATH_HINT=/DATA/ERIC/LTTng /path/to/source
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if(LTTNG_PATH_HINT)
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message(STATUS "FindLTTng: using PATH HINT: ${LTTNG_PATH_HINT}")
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else()
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set(LTTNG_PATH_HINT)
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endif()
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#One can add his/her own builtin PATH.
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#FILE(TO_CMAKE_PATH "/DATA/ERIC/LTTng" MYPATH)
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#list(APPEND LTTNG_PATH_HINT ${MYPATH})
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find_path(LTTNG_INCLUDE_DIR
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NAMES lttng/tracepoint.h
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PATHS ${LTTNG_PATH_HINT}
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PATH_SUFFIXES include
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DOC "The LTTng include headers")
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find_path(LTTNG_LIBRARY_DIR
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NAMES liblttng-ust.so
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PATHS ${LTTNG_PATH_HINT}
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PATH_SUFFIXES lib lib64
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DOC "The LTTng libraries")
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find_library(LTTNG_UST_LIBRARY lttng-ust PATHS ${LTTNG_LIBRARY_DIR})
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find_library(URCU_LIBRARY urcu-bp PATHS ${LTTNG_LIBRARY_DIR})
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find_library(UUID_LIBRARY uuid)
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set(LTTNG_LIBRARIES ${LTTNG_UST_LIBRARY} ${URCU_LIBRARY} ${UUID_LIBRARY})
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message(STATUS "Looking for lttng executable...")
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set(LTTNG_NAMES "lttng;lttng-ctl")
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# FIND_PROGRAM twice using NO_DEFAULT_PATH on first shot
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find_program(LTTNG_EXECUTABLE
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NAMES ${LTTNG_NAMES}
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PATHS ${LTTNG_PATH_HINT}/bin
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NO_DEFAULT_PATH
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DOC "The LTTNG command line tool")
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find_program(LTTNG_EXECUTABLE
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NAMES ${LTTNG_NAMES}
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PATHS ${LTTNG_PATH_HINT}/bin
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DOC "The LTTNG command line tool")
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find_program(LTTNG_GEN_TP NAMES lttng-gen-tp
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DOC "The lttng-gen-tp command line tool")
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# handle the QUIETLY and REQUIRED arguments and set PRELUDE_FOUND to TRUE if
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# all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(LTTNG
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REQUIRED_VARS LTTNG_INCLUDE_DIR LTTNG_LIBRARY_DIR LTTNG_GEN_TP)
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# VERSION FPHSA options not handled by CMake version < 2.8.2)
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# VERSION_VAR)
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mark_as_advanced(LTTNG_INCLUDE_DIR)
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mark_as_advanced(LTTNG_LIBRARY_DIR)
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