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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,255 @@ | ||
| # Updated FindThreads.cmake that supports pthread-win32 | ||
| # Downloaded from http://www.vtk.org/Bug/bug_view_advanced_page.php?bug_id=6399 | ||
|
|
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| # - This module determines the thread library of the system. | ||
| # | ||
| # The following variables are set | ||
| # CMAKE_THREAD_LIBS_INIT - the thread library | ||
| # CMAKE_USE_SPROC_INIT - are we using sproc? | ||
| # CMAKE_USE_WIN32_THREADS_INIT - using WIN32 threads? | ||
| # CMAKE_USE_PTHREADS_INIT - are we using pthreads | ||
| # CMAKE_HP_PTHREADS_INIT - are we using hp pthreads | ||
| # | ||
| # If use of pthreads-win32 is desired, the following variables | ||
| # can be set. | ||
| # | ||
| # THREADS_USE_PTHREADS_WIN32 - | ||
| # Setting this to true searches for the pthreads-win32 | ||
| # port (since CMake 2.8.0) | ||
| # | ||
| # THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME | ||
| # C = no exceptions (default) | ||
| # (NOTE: This is the default scheme on most POSIX thread | ||
| # implementations and what you should probably be using) | ||
| # CE = C++ Exception Handling | ||
| # SE = Structure Exception Handling (MSVC only) | ||
| # (NOTE: Changing this option from the default may affect | ||
| # the portability of your application. See pthreads-win32 | ||
| # documentation for more details.) | ||
| # | ||
| #====================================================== | ||
| # Example usage where threading library | ||
| # is provided by the system: | ||
| # | ||
| # find_package(Threads REQUIRED) | ||
| # add_executable(foo foo.cc) | ||
| # target_link_libraries(foo ${CMAKE_THREAD_LIBS_INIT}) | ||
| # | ||
| # Example usage if pthreads-win32 is desired on Windows | ||
| # or a system provided thread library: | ||
| # | ||
| # set(THREADS_USE_PTHREADS_WIN32 true) | ||
| # find_package(Threads REQUIRED) | ||
| # include_directories(${THREADS_PTHREADS_INCLUDE_DIR}) | ||
| # | ||
| # add_executable(foo foo.cc) | ||
| # target_link_libraries(foo ${CMAKE_THREAD_LIBS_INIT}) | ||
| # | ||
|
|
||
| INCLUDE (CheckIncludeFiles) | ||
| INCLUDE (CheckLibraryExists) | ||
| SET(Threads_FOUND FALSE) | ||
|
|
||
| IF(WIN32 AND NOT CYGWIN AND THREADS_USE_PTHREADS_WIN32) | ||
| SET(_Threads_ptwin32 true) | ||
| ENDIF() | ||
|
|
||
| # Do we have sproc? | ||
| IF(CMAKE_SYSTEM MATCHES IRIX) | ||
| CHECK_INCLUDE_FILES("sys/types.h;sys/prctl.h" CMAKE_HAVE_SPROC_H) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_HAVE_SPROC_H) | ||
| # We have sproc | ||
| SET(CMAKE_USE_SPROC_INIT 1) | ||
|
|
||
| ELSEIF(_Threads_ptwin32) | ||
|
|
||
| IF(NOT DEFINED THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME) | ||
| # Assign the default scheme | ||
| SET(THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME "C") | ||
| ELSE() | ||
| # Validate the scheme specified by the user | ||
| IF(NOT THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME STREQUAL "C" AND | ||
| NOT THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME STREQUAL "CE" AND | ||
| NOT THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME STREQUAL "SE") | ||
| MESSAGE(FATAL_ERROR "See documentation for FindPthreads.cmake, only C, CE, and SE modes are allowed") | ||
| ENDIF() | ||
| IF(NOT MSVC AND THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME STREQUAL "SE") | ||
| MESSAGE(FATAL_ERROR "Structured Exception Handling is only allowed for MSVC") | ||
| ENDIF(NOT MSVC AND THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME STREQUAL "SE") | ||
| ENDIF() | ||
|
|
||
| FIND_PATH(THREADS_PTHREADS_INCLUDE_DIR pthread.h) | ||
|
|
||
| # Determine the library filename | ||
| IF(MSVC) | ||
| SET(_Threads_pthreads_libname | ||
| pthreadV${THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME}2) | ||
| ELSEIF(MINGW) | ||
| SET(_Threads_pthreads_libname | ||
| pthreadG${THREADS_PTHREADS_WIN32_EXCEPTION_SCHEME}2) | ||
| ELSE() | ||
| MESSAGE(FATAL_ERROR "This should never happen") | ||
| ENDIF() | ||
|
|
||
| # Use the include path to help find the library if possible | ||
| SET(_Threads_lib_paths "") | ||
| IF(THREADS_PTHREADS_INCLUDE_DIR) | ||
| GET_FILENAME_COMPONENT(_Threads_root_dir | ||
| ${THREADS_PTHREADS_INCLUDE_DIR} PATH) | ||
| SET(_Threads_lib_paths ${_Threads_root_dir}/lib) | ||
| ENDIF() | ||
| FIND_LIBRARY(THREADS_PTHREADS_WIN32_LIBRARY | ||
| NAMES ${_Threads_pthreads_libname} | ||
| PATHS ${_Threads_lib_paths} | ||
| DOC "The Portable Threads Library for Win32" | ||
| NO_SYSTEM_PATH | ||
| ) | ||
|
|
||
| IF(THREADS_PTHREADS_INCLUDE_DIR AND THREADS_PTHREADS_WIN32_LIBRARY) | ||
| MARK_AS_ADVANCED(THREADS_PTHREADS_INCLUDE_DIR) | ||
| SET(CMAKE_THREAD_LIBS_INIT ${THREADS_PTHREADS_WIN32_LIBRARY}) | ||
| SET(CMAKE_HAVE_THREADS_LIBRARY 1) | ||
| SET(Threads_FOUND TRUE) | ||
| ENDIF() | ||
|
|
||
| MARK_AS_ADVANCED(THREADS_PTHREADS_WIN32_LIBRARY) | ||
|
|
||
| ELSE() | ||
| # Do we have pthreads? | ||
| CHECK_INCLUDE_FILES("pthread.h" CMAKE_HAVE_PTHREAD_H) | ||
| IF(CMAKE_HAVE_PTHREAD_H) | ||
|
|
||
| # | ||
| # We have pthread.h | ||
| # Let's check for the library now. | ||
| # | ||
| SET(CMAKE_HAVE_THREADS_LIBRARY) | ||
| IF(NOT THREADS_HAVE_PTHREAD_ARG) | ||
|
|
||
| # Do we have -lpthreads | ||
| CHECK_LIBRARY_EXISTS(pthreads pthread_create "" CMAKE_HAVE_PTHREADS_CREATE) | ||
| IF(CMAKE_HAVE_PTHREADS_CREATE) | ||
| SET(CMAKE_THREAD_LIBS_INIT "-lpthreads") | ||
| SET(CMAKE_HAVE_THREADS_LIBRARY 1) | ||
| SET(Threads_FOUND TRUE) | ||
| ENDIF() | ||
|
|
||
| # Ok, how about -lpthread | ||
| CHECK_LIBRARY_EXISTS(pthread pthread_create "" CMAKE_HAVE_PTHREAD_CREATE) | ||
| IF(CMAKE_HAVE_PTHREAD_CREATE) | ||
| SET(CMAKE_THREAD_LIBS_INIT "-lpthread") | ||
| SET(Threads_FOUND TRUE) | ||
| SET(CMAKE_HAVE_THREADS_LIBRARY 1) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_SYSTEM MATCHES "SunOS.*") | ||
| # On sun also check for -lthread | ||
| CHECK_LIBRARY_EXISTS(thread thr_create "" CMAKE_HAVE_THR_CREATE) | ||
| IF(CMAKE_HAVE_THR_CREATE) | ||
| SET(CMAKE_THREAD_LIBS_INIT "-lthread") | ||
| SET(CMAKE_HAVE_THREADS_LIBRARY 1) | ||
| SET(Threads_FOUND TRUE) | ||
| ENDIF() | ||
| ENDIF(CMAKE_SYSTEM MATCHES "SunOS.*") | ||
|
|
||
| ENDIF(NOT THREADS_HAVE_PTHREAD_ARG) | ||
|
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||
| IF(NOT CMAKE_HAVE_THREADS_LIBRARY) | ||
| # If we did not found -lpthread, -lpthread, or -lthread, look for -pthread | ||
| IF("THREADS_HAVE_PTHREAD_ARG" MATCHES "^THREADS_HAVE_PTHREAD_ARG") | ||
| MESSAGE(STATUS "Check if compiler accepts -pthread") | ||
| TRY_RUN(THREADS_PTHREAD_ARG THREADS_HAVE_PTHREAD_ARG | ||
| ${CMAKE_BINARY_DIR} | ||
| ${CMAKE_ROOT}/Modules/CheckForPthreads.c | ||
| CMAKE_FLAGS -DLINK_LIBRARIES:STRING=-pthread | ||
| COMPILE_OUTPUT_VARIABLE OUTPUT) | ||
|
|
||
| IF(THREADS_HAVE_PTHREAD_ARG) | ||
| IF(THREADS_PTHREAD_ARG MATCHES "^2$") | ||
| SET(Threads_FOUND TRUE) | ||
| MESSAGE(STATUS "Check if compiler accepts -pthread - yes") | ||
| ELSE() | ||
| MESSAGE(STATUS "Check if compiler accepts -pthread - no") | ||
| FILE(APPEND | ||
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log | ||
| "Determining if compiler accepts -pthread returned ${THREADS_PTHREAD_ARG} instead of 2. The compiler had the following output:\n${OUTPUT}\n\n") | ||
| ENDIF() | ||
| ELSE() | ||
| MESSAGE(STATUS "Check if compiler accepts -pthread - no") | ||
| FILE(APPEND | ||
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log | ||
| "Determining if compiler accepts -pthread failed with the following output:\n${OUTPUT}\n\n") | ||
| ENDIF() | ||
|
|
||
| ENDIF("THREADS_HAVE_PTHREAD_ARG" MATCHES "^THREADS_HAVE_PTHREAD_ARG") | ||
|
|
||
| IF(THREADS_HAVE_PTHREAD_ARG) | ||
| SET(Threads_FOUND TRUE) | ||
| SET(CMAKE_THREAD_LIBS_INIT "-pthread") | ||
| ENDIF() | ||
|
|
||
| ENDIF(NOT CMAKE_HAVE_THREADS_LIBRARY) | ||
| ENDIF(CMAKE_HAVE_PTHREAD_H) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_THREAD_LIBS_INIT) | ||
| SET(CMAKE_USE_PTHREADS_INIT 1) | ||
| SET(Threads_FOUND TRUE) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_SYSTEM MATCHES "Windows" | ||
| AND NOT THREADS_USE_PTHREADS_WIN32) | ||
| SET(CMAKE_USE_WIN32_THREADS_INIT 1) | ||
| SET(Threads_FOUND TRUE) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_USE_PTHREADS_INIT) | ||
| IF(CMAKE_SYSTEM MATCHES "HP-UX-*") | ||
| # Use libcma if it exists and can be used. It provides more | ||
| # symbols than the plain pthread library. CMA threads | ||
| # have actually been deprecated: | ||
| # http://docs.hp.com/en/B3920-90091/ch12s03.html#d0e11395 | ||
| # http://docs.hp.com/en/947/d8.html | ||
| # but we need to maintain compatibility here. | ||
| # The CMAKE_HP_PTHREADS setting actually indicates whether CMA threads | ||
| # are available. | ||
| CHECK_LIBRARY_EXISTS(cma pthread_attr_create "" CMAKE_HAVE_HP_CMA) | ||
| IF(CMAKE_HAVE_HP_CMA) | ||
| SET(CMAKE_THREAD_LIBS_INIT "-lcma") | ||
| SET(CMAKE_HP_PTHREADS_INIT 1) | ||
| SET(Threads_FOUND TRUE) | ||
| ENDIF(CMAKE_HAVE_HP_CMA) | ||
| SET(CMAKE_USE_PTHREADS_INIT 1) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_SYSTEM MATCHES "OSF1-V*") | ||
| SET(CMAKE_USE_PTHREADS_INIT 0) | ||
| SET(CMAKE_THREAD_LIBS_INIT ) | ||
| ENDIF() | ||
|
|
||
| IF(CMAKE_SYSTEM MATCHES "CYGWIN_NT*") | ||
| SET(CMAKE_USE_PTHREADS_INIT 1) | ||
| SET(Threads_FOUND TRUE) | ||
| SET(CMAKE_THREAD_LIBS_INIT ) | ||
| SET(CMAKE_USE_WIN32_THREADS_INIT 0) | ||
| ENDIF() | ||
| ENDIF(CMAKE_USE_PTHREADS_INIT) | ||
|
|
||
| INCLUDE(FindPackageHandleStandardArgs) | ||
| IF(_Threads_ptwin32) | ||
| FIND_PACKAGE_HANDLE_STANDARD_ARGS(Threads DEFAULT_MSG | ||
| THREADS_PTHREADS_WIN32_LIBRARY THREADS_PTHREADS_INCLUDE_DIR) | ||
| ELSE() | ||
| FIND_PACKAGE_HANDLE_STANDARD_ARGS(Threads DEFAULT_MSG Threads_FOUND) | ||
| ENDIF() | ||
|
|
||
| if(THREADS_FOUND AND NOT TARGET Threads::Threads) | ||
| add_library(Threads::Threads INTERFACE IMPORTED) | ||
|
|
||
| if(CMAKE_THREAD_LIBS_INIT) | ||
| set_property(TARGET Threads::Threads PROPERTY INTERFACE_LINK_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}") | ||
| set_property(TARGET Threads::Threads PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${THREADS_PTHREADS_INCLUDE_DIR}") | ||
| endif() | ||
| endif() |
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