- Merged with upstream version
[rtl-433.git] / cmake / Modules / FindThreads.cmake
diff --git a/cmake/Modules/FindThreads.cmake b/cmake/Modules/FindThreads.cmake
deleted file mode 100644 (file)
index 8028b15..0000000
+++ /dev/null
@@ -1,246 +0,0 @@
-# Updated FindThreads.cmake that supports pthread-win32
-# Downloaded from http://www.vtk.org/Bug/bug_view_advanced_page.php?bug_id=6399
-
-# - 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)
-
-    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()