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9db3116226
Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block. This is no longer the preferred style.
Run the following shell code:
for c in else endif endforeach endfunction endmacro endwhile; do
echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
167 lines
5.8 KiB
CMake
167 lines
5.8 KiB
CMake
# - This module determines the thread library of the system.
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# The following variables are set
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# CMAKE_THREAD_LIBS_INIT - the thread library
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# CMAKE_USE_SPROC_INIT - are we using sproc?
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# CMAKE_USE_WIN32_THREADS_INIT - using WIN32 threads?
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# CMAKE_USE_PTHREADS_INIT - are we using pthreads
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# CMAKE_HP_PTHREADS_INIT - are we using hp pthreads
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# For systems with multiple thread libraries, caller can set
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# CMAKE_THREAD_PREFER_PTHREAD
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#=============================================================================
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# Copyright 2002-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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include (CheckIncludeFiles)
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include (CheckLibraryExists)
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include (CheckSymbolExists)
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set(Threads_FOUND FALSE)
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# Do we have sproc?
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if(CMAKE_SYSTEM MATCHES IRIX AND NOT CMAKE_THREAD_PREFER_PTHREAD)
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CHECK_INCLUDE_FILES("sys/types.h;sys/prctl.h" CMAKE_HAVE_SPROC_H)
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endif()
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if(CMAKE_HAVE_SPROC_H AND NOT CMAKE_THREAD_PREFER_PTHREAD)
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# We have sproc
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set(CMAKE_USE_SPROC_INIT 1)
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else()
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# Do we have pthreads?
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CHECK_INCLUDE_FILES("pthread.h" CMAKE_HAVE_PTHREAD_H)
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if(CMAKE_HAVE_PTHREAD_H)
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#
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# We have pthread.h
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# Let's check for the library now.
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#
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set(CMAKE_HAVE_THREADS_LIBRARY)
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if(NOT THREADS_HAVE_PTHREAD_ARG)
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# Check if pthread functions are in normal C library
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CHECK_SYMBOL_EXISTS(pthread_create pthread.h CMAKE_HAVE_LIBC_CREATE)
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if(CMAKE_HAVE_LIBC_CREATE)
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set(CMAKE_THREAD_LIBS_INIT "")
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set(CMAKE_HAVE_THREADS_LIBRARY 1)
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set(Threads_FOUND TRUE)
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endif()
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if(NOT CMAKE_HAVE_THREADS_LIBRARY)
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# Do we have -lpthreads
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CHECK_LIBRARY_EXISTS(pthreads pthread_create "" CMAKE_HAVE_PTHREADS_CREATE)
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if(CMAKE_HAVE_PTHREADS_CREATE)
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set(CMAKE_THREAD_LIBS_INIT "-lpthreads")
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set(CMAKE_HAVE_THREADS_LIBRARY 1)
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set(Threads_FOUND TRUE)
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endif()
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# Ok, how about -lpthread
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CHECK_LIBRARY_EXISTS(pthread pthread_create "" CMAKE_HAVE_PTHREAD_CREATE)
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if(CMAKE_HAVE_PTHREAD_CREATE)
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set(CMAKE_THREAD_LIBS_INIT "-lpthread")
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set(CMAKE_HAVE_THREADS_LIBRARY 1)
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set(Threads_FOUND TRUE)
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endif()
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if(CMAKE_SYSTEM MATCHES "SunOS.*")
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# On sun also check for -lthread
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CHECK_LIBRARY_EXISTS(thread thr_create "" CMAKE_HAVE_THR_CREATE)
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if(CMAKE_HAVE_THR_CREATE)
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set(CMAKE_THREAD_LIBS_INIT "-lthread")
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set(CMAKE_HAVE_THREADS_LIBRARY 1)
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set(Threads_FOUND TRUE)
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endif()
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endif()
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endif()
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endif()
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if(NOT CMAKE_HAVE_THREADS_LIBRARY)
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# If we did not found -lpthread, -lpthread, or -lthread, look for -pthread
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if("THREADS_HAVE_PTHREAD_ARG" MATCHES "^THREADS_HAVE_PTHREAD_ARG")
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message(STATUS "Check if compiler accepts -pthread")
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try_run(THREADS_PTHREAD_ARG THREADS_HAVE_PTHREAD_ARG
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${CMAKE_BINARY_DIR}
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${CMAKE_ROOT}/Modules/CheckForPthreads.c
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CMAKE_FLAGS -DLINK_LIBRARIES:STRING=-pthread
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COMPILE_OUTPUT_VARIABLE OUTPUT)
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if(THREADS_HAVE_PTHREAD_ARG)
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if(THREADS_PTHREAD_ARG MATCHES "^2$")
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set(Threads_FOUND TRUE)
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message(STATUS "Check if compiler accepts -pthread - yes")
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else()
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message(STATUS "Check if compiler accepts -pthread - no")
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file(APPEND
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if compiler accepts -pthread returned ${THREADS_PTHREAD_ARG} instead of 2. The compiler had the following output:\n${OUTPUT}\n\n")
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endif()
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else()
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message(STATUS "Check if compiler accepts -pthread - no")
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file(APPEND
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if compiler accepts -pthread failed with the following output:\n${OUTPUT}\n\n")
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endif()
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endif()
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if(THREADS_HAVE_PTHREAD_ARG)
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set(Threads_FOUND TRUE)
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set(CMAKE_THREAD_LIBS_INIT "-pthread")
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endif()
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endif()
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endif()
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endif()
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if(CMAKE_THREAD_LIBS_INIT OR CMAKE_HAVE_LIBC_CREATE)
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set(CMAKE_USE_PTHREADS_INIT 1)
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set(Threads_FOUND TRUE)
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endif()
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if(CMAKE_SYSTEM MATCHES "Windows")
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set(CMAKE_USE_WIN32_THREADS_INIT 1)
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set(Threads_FOUND TRUE)
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endif()
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if(CMAKE_USE_PTHREADS_INIT)
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if(CMAKE_SYSTEM MATCHES "HP-UX-*")
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# Use libcma if it exists and can be used. It provides more
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# symbols than the plain pthread library. CMA threads
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# have actually been deprecated:
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# http://docs.hp.com/en/B3920-90091/ch12s03.html#d0e11395
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# http://docs.hp.com/en/947/d8.html
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# but we need to maintain compatibility here.
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# The CMAKE_HP_PTHREADS setting actually indicates whether CMA threads
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# are available.
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CHECK_LIBRARY_EXISTS(cma pthread_attr_create "" CMAKE_HAVE_HP_CMA)
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if(CMAKE_HAVE_HP_CMA)
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set(CMAKE_THREAD_LIBS_INIT "-lcma")
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set(CMAKE_HP_PTHREADS_INIT 1)
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set(Threads_FOUND TRUE)
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endif()
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set(CMAKE_USE_PTHREADS_INIT 1)
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endif()
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if(CMAKE_SYSTEM MATCHES "OSF1-V*")
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set(CMAKE_USE_PTHREADS_INIT 0)
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set(CMAKE_THREAD_LIBS_INIT )
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endif()
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if(CMAKE_SYSTEM MATCHES "CYGWIN_NT*")
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set(CMAKE_USE_PTHREADS_INIT 1)
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set(Threads_FOUND TRUE)
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set(CMAKE_THREAD_LIBS_INIT )
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set(CMAKE_USE_WIN32_THREADS_INIT 0)
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endif()
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endif()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(Threads DEFAULT_MSG Threads_FOUND)
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