diff options
| -rw-r--r-- | Modules/FindThreads.cmake | 78 |
1 files changed, 42 insertions, 36 deletions
diff --git a/Modules/FindThreads.cmake b/Modules/FindThreads.cmake index 8be6613..aac9c0e 100644 --- a/Modules/FindThreads.cmake +++ b/Modules/FindThreads.cmake @@ -22,6 +22,7 @@ #============================================================================= # Copyright 2002-2009 Kitware, Inc. +# Copyright 2011-2014 Rolf Eike Beer <eike@sf-mail.de> # # Distributed under the OSI-approved BSD License (the "License"); # see accompanying file Copyright.txt for details. @@ -48,7 +49,7 @@ endif() # Internal helper macro. # Do NOT even think about using it outside of this file! macro(_check_threads_lib LIBNAME FUNCNAME VARNAME) - if(NOT CMAKE_HAVE_THREADS_LIBRARY) + if(NOT Threads_FOUND) CHECK_LIBRARY_EXISTS(${LIBNAME} ${FUNCNAME} "" ${VARNAME}) if(${VARNAME}) set(CMAKE_THREAD_LIBS_INIT "-l${LIBNAME}") @@ -58,6 +59,45 @@ macro(_check_threads_lib LIBNAME FUNCNAME VARNAME) endif () endmacro() +# Internal helper macro. +# Do NOT even think about using it outside of this file! +macro(_check_pthreads_flag) + if(NOT Threads_FOUND) + # If we did not found -lpthread, -lpthread, or -lthread, look for -pthread + if(NOT DEFINED THREADS_HAVE_PTHREAD_ARG) + message(STATUS "Check if compiler accepts -pthread") + try_run(THREADS_PTHREAD_ARG THREADS_HAVE_PTHREAD_ARG + ${CMAKE_BINARY_DIR} + ${CMAKE_CURRENT_LIST_DIR}/CheckForPthreads.c + CMAKE_FLAGS -DLINK_LIBRARIES:STRING=-pthread + COMPILE_OUTPUT_VARIABLE OUTPUT) + + if(THREADS_HAVE_PTHREAD_ARG) + if(THREADS_PTHREAD_ARG STREQUAL "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${OUTPUT}\n\n") + endif() + + endif() + + if(THREADS_HAVE_PTHREAD_ARG) + set(Threads_FOUND TRUE) + set(CMAKE_THREAD_LIBS_INIT "-pthread") + endif() + endif() +endmacro() + if(CMAKE_HAVE_SPROC_H AND NOT CMAKE_THREAD_PREFER_PTHREAD) # We have sproc set(CMAKE_USE_SPROC_INIT 1) @@ -89,41 +129,7 @@ else() endif() endif() - if(NOT CMAKE_HAVE_THREADS_LIBRARY) - # If we did not found -lpthread, -lpthread, or -lthread, look for -pthread - if("x${THREADS_HAVE_PTHREAD_ARG}" STREQUAL "x") - message(STATUS "Check if compiler accepts -pthread") - try_run(THREADS_PTHREAD_ARG THREADS_HAVE_PTHREAD_ARG - ${CMAKE_BINARY_DIR} - ${CMAKE_CURRENT_LIST_DIR}/CheckForPthreads.c - CMAKE_FLAGS -DLINK_LIBRARIES:STRING=-pthread - COMPILE_OUTPUT_VARIABLE OUTPUT) - - if(THREADS_HAVE_PTHREAD_ARG) - if(THREADS_PTHREAD_ARG STREQUAL "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() - - if(THREADS_HAVE_PTHREAD_ARG) - set(Threads_FOUND TRUE) - set(CMAKE_THREAD_LIBS_INIT "-pthread") - endif() - - endif() + _check_pthreads_flag() endif() endif() |