| # - 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 |
| |
| INCLUDE (CheckIncludeFiles) |
| INCLUDE (CheckLibraryExists) |
| |
| # Do we have sproc? |
| IF(CMAKE_SYSTEM MATCHES IRIX) |
| CHECK_INCLUDE_FILES("sys/types.h;sys/prctl.h" CMAKE_HAVE_SPROC_H) |
| ENDIF(CMAKE_SYSTEM MATCHES IRIX) |
| |
| IF(CMAKE_HAVE_SPROC_H) |
| # We have sproc |
| SET(CMAKE_USE_SPROC_INIT 1) |
| ELSE(CMAKE_HAVE_SPROC_H) |
| # 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) |
| ENDIF(CMAKE_HAVE_PTHREADS_CREATE) |
| # 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(CMAKE_HAVE_THREADS_LIBRARY 1) |
| ENDIF(CMAKE_HAVE_PTHREAD_CREATE) |
| 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) |
| ENDIF(CMAKE_HAVE_THR_CREATE) |
| ENDIF(CMAKE_SYSTEM MATCHES "SunOS.*") |
| ENDIF(NOT THREADS_HAVE_PTHREAD_ARG) |
| |
| 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} |
| ${CMAKE_ROOT}/Modules/CheckForPthreads.c |
| CMAKE_FLAGS -DLINK_LIBRARIES:STRING=-pthread |
| COMPILE_OUTPUT_VARIABLE OUTPUT) |
| IF(THREADS_HAVE_PTHREAD_ARG) |
| IF(THREADS_PTHREAD_ARG MATCHES "^2$") |
| MESSAGE(STATUS "Check if compiler accepts -pthread - yes") |
| ELSE(THREADS_PTHREAD_ARG MATCHES "^2$") |
| 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(THREADS_PTHREAD_ARG MATCHES "^2$") |
| ELSE(THREADS_HAVE_PTHREAD_ARG) |
| 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(THREADS_HAVE_PTHREAD_ARG) |
| ENDIF("THREADS_HAVE_PTHREAD_ARG" MATCHES "^THREADS_HAVE_PTHREAD_ARG") |
| IF(THREADS_HAVE_PTHREAD_ARG) |
| SET(CMAKE_THREAD_LIBS_INIT "-pthread") |
| ENDIF(THREADS_HAVE_PTHREAD_ARG) |
| ENDIF(NOT CMAKE_HAVE_THREADS_LIBRARY) |
| ENDIF(CMAKE_HAVE_PTHREAD_H) |
| ENDIF(CMAKE_HAVE_SPROC_H) |
| |
| IF(CMAKE_THREAD_LIBS_INIT) |
| SET(CMAKE_USE_PTHREADS_INIT 1) |
| ENDIF(CMAKE_THREAD_LIBS_INIT) |
| |
| IF(CMAKE_SYSTEM MATCHES "Windows") |
| SET(CMAKE_USE_WIN32_THREADS_INIT 1) |
| ENDIF(CMAKE_SYSTEM MATCHES "Windows") |
| |
| 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) |
| ENDIF(CMAKE_HAVE_HP_CMA) |
| SET(CMAKE_USE_PTHREADS_INIT 1) |
| ENDIF(CMAKE_SYSTEM MATCHES "HP-UX-*") |
| |
| IF(CMAKE_SYSTEM MATCHES "OSF1-V*") |
| SET(CMAKE_USE_PTHREADS_INIT 0) |
| SET(CMAKE_THREAD_LIBS_INIT ) |
| ENDIF(CMAKE_SYSTEM MATCHES "OSF1-V*") |
| |
| IF(CMAKE_SYSTEM MATCHES "CYGWIN_NT*") |
| SET(CMAKE_USE_PTHREADS_INIT 1) |
| SET(CMAKE_THREAD_LIBS_INIT ) |
| SET(CMAKE_USE_WIN32_THREADS_INIT 0) |
| ENDIF(CMAKE_SYSTEM MATCHES "CYGWIN_NT*") |
| ENDIF(CMAKE_USE_PTHREADS_INIT) |
| |
