endif()
#--------------------------------------------------------------------------------------------------
-### Initialize of CONTEXT THREADS
-
-set(HAVE_THREAD_CONTEXTS 0)
-if(CMAKE_USE_PTHREADS_INIT)
- ### Test that we have a way to create semaphores
-
- set(HAVE_SEM_OPEN 0)
- CHECK_LIBRARY_EXISTS(pthread sem_open "" HAVE_SEM_OPEN_LIB)
- if(HAVE_SEM_OPEN_LIB)
- try_run(semopen_retval semopen_compilable
- ${CMAKE_BINARY_DIR}
- ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_sem_open.c
- LINK_LIBRARIES pthread
- COMPILE_OUTPUT_VARIABLE semopen_compilmsg
- RUN_OUTPUT_VARIABLE semopen_runmsg)
-
- if(semopen_compilable)
- if(NOT semopen_retval) # error if not 0
- message(STATUS "sem_open is compilable and executable")
- set(HAVE_SEM_OPEN 1)
- else()
- message(STATUS "Warning: sem_open seems compilable but not executable")
- message(STATUS "Compilation output: ${semopen_compilmsg}")
- message(STATUS "Execution output: ${semopen_runmsg}")
- message(STATUS "Exit value: ${semopen_retval}")
- endif()
- else()
- message(STATUS "Warning: sem_open not compilable")
- message(STATUS "Compilation output: ${semopen_compilmsg}")
- endif()
- unset(semopen_compilable)
- unset(semopen_retval)
- unset(semopen_runmsg)
- unset(semopen_compilmsg)
- endif()
-
- set(HAVE_SEM_INIT 0)
- if(NOT APPLE) # OS X El Capitan deprecates this function
- CHECK_LIBRARY_EXISTS(pthread sem_init "" HAVE_SEM_INIT_LIB)
- endif()
- if(HAVE_SEM_INIT_LIB)
- try_run(seminit_retval seminit_compilable
- ${CMAKE_BINARY_DIR}
- ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_sem_init.c
- LINK_LIBRARIES pthread
- COMPILE_OUTPUT_VARIABLE seminit_compilmsg
- RUN_OUTPUT_VARIABLE seminit_runmsg)
-
- if(seminit_compilable)
- if(NOT seminit_retval) # error if not 0
- message(STATUS "sem_init is compilable and executable")
- set(HAVE_SEM_INIT 1)
- else()
- message(STATUS "Warning: sem_init seems compilable but not executable")
- message(STATUS "Compilation output: ${seminit_compilmsg}")
- message(STATUS "Execution output: ${seminit_runmsg}")
- message(STATUS "Exit value: ${seminit_retval}")
- endif()
- else()
- message(STATUS "Warning: sem_init not compilable")
- message(STATUS "Compilation output: ${seminit_compilmsg}")
- endif()
- unset(seminit_compilable)
- unset(seminit_retval)
- unset(seminit_runmsg)
- unset(seminit_compilmsg)
- endif()
-
- if(NOT HAVE_SEM_OPEN AND NOT HAVE_SEM_INIT)
- message(FATAL_ERROR "Semaphores are not usable (failed to use both sem_open and sem_init), but they are mandatory to threads (you may need to mount /dev).")
- endif()
-
- set(HAVE_THREAD_CONTEXTS 1)
- message(STATUS "Support for thread context factory ok.")
-endif()
+### Check what context backends are available
set(HAVE_UCONTEXT_CONTEXTS 0)
if(NOT HAVE_UCONTEXT_H)
