99 lines
3.1 KiB
CMake
99 lines
3.1 KiB
CMake
# - Find the Pthreads library
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# This module searches for the Pthreads library (including the
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# pthreads-win32 port).
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#
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# This module defines these variables:
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#
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# PTHREADS_FOUND
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# True if the Pthreads library was found
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# PTHREADS_LIBRARY
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# The location of the Pthreads library
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# PTHREADS_INCLUDE_DIR
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# The include path of the Pthreads library
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# PTHREADS_DEFINITIONS
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# Preprocessor definitions to define
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#
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# This module responds to the PTHREADS_EXCEPTION_SCHEME
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# variable on Win32 to allow the user to control the
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# library linked against. The Pthreads-win32 port
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# provides the ability to link against a version of the
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# library with exception handling. IT IS NOT RECOMMENDED
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# THAT YOU USE THIS because most POSIX thread implementations
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# do not support stack unwinding.
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#
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# PTHREADS_EXCEPTION_SCHEME
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# C = no exceptions (default)
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# (NOTE: This is the default scheme on most POSIX thread
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# implementations and what you should probably be using)
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# CE = C++ Exception Handling
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# SE = Structure Exception Handling (MSVC only)
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#
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#
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# Define a default exception scheme to link against
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# and validate user choice.
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#
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IF(NOT DEFINED PTHREADS_EXCEPTION_SCHEME)
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# Assign default if needed
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SET(PTHREADS_EXCEPTION_SCHEME "C")
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ELSE(NOT DEFINED PTHREADS_EXCEPTION_SCHEME)
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# Validate
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IF(NOT PTHREADS_EXCEPTION_SCHEME STREQUAL "C" AND
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NOT PTHREADS_EXCEPTION_SCHEME STREQUAL "CE" AND
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NOT PTHREADS_EXCEPTION_SCHEME STREQUAL "SE")
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MESSAGE(FATAL_ERROR "See documentation for FindPthreads.cmake, only C, CE, and SE modes are allowed")
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ENDIF(NOT PTHREADS_EXCEPTION_SCHEME STREQUAL "C" AND
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NOT PTHREADS_EXCEPTION_SCHEME STREQUAL "CE" AND
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NOT PTHREADS_EXCEPTION_SCHEME STREQUAL "SE")
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IF(NOT MSVC AND PTHREADS_EXCEPTION_SCHEME STREQUAL "SE")
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MESSAGE(FATAL_ERROR "Structured Exception Handling is only allowed for MSVC")
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ENDIF(NOT MSVC AND PTHREADS_EXCEPTION_SCHEME STREQUAL "SE")
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ENDIF(NOT DEFINED PTHREADS_EXCEPTION_SCHEME)
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#
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# Find the header file
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#
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FIND_PATH(PTHREADS_INCLUDE_DIR pthread.h)
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#
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# Find the library
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#
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SET(names)
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IF(MSVC)
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SET(names
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pthreadV${PTHREADS_EXCEPTION_SCHEME}2
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pthread
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)
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ELSEIF(MINGW)
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SET(names
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pthreadG${PTHREADS_EXCEPTION_SCHEME}2
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pthread
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)
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ELSE(MSVC) # Unix / Cygwin / Apple
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SET(names pthread)
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ENDIF(MSVC)
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FIND_LIBRARY(PTHREADS_LIBRARY ${names}
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DOC "The Portable Threads Library")
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IF(PTHREADS_INCLUDE_DIR AND PTHREADS_LIBRARY)
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SET(PTHREADS_FOUND true)
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SET(PTHREADS_DEFINITIONS -DHAVE_PTHREAD_H)
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SET(PTHREADS_INCLUDE_DIRS ${PTHREADS_INCLUDE_DIR})
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SET(PTHREADS_LIBRARIES ${PTHREADS_LIBRARY})
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ENDIF(PTHREADS_INCLUDE_DIR AND PTHREADS_LIBRARY)
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IF(PTHREADS_FOUND)
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IF(NOT PTHREADS_FIND_QUIETLY)
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MESSAGE(STATUS "Found Pthreads: ${PTHREADS_LIBRARY}")
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ENDIF(NOT PTHREADS_FIND_QUIETLY)
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ELSE(PTHREADS_FOUND)
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IF(PTHREADS_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR "Could not find the Pthreads Library")
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ENDIF(PTHREADS_FIND_REQUIRED)
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ENDIF(PTHREADS_FOUND)
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