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| author | Rolf Eike Beer <eike@sf-mail.de> | 2011-04-25 15:33:15 (GMT) |
|---|---|---|
| committer | David Cole <david.cole@kitware.com> | 2011-08-20 18:36:34 (GMT) |
| commit | fd61be71401ef9e0a241562fc31539273084deff (patch) | |
| tree | 2f3936c15fca973db1cc22e32e4c41b32b0c6837 /Modules/FindThreads.cmake | |
| parent | 7dcbb663157858fe4fc73adce4ad23ffd370bb2e (diff) | |
| download | CMake-fd61be71401ef9e0a241562fc31539273084deff.zip CMake-fd61be71401ef9e0a241562fc31539273084deff.tar.gz CMake-fd61be71401ef9e0a241562fc31539273084deff.tar.bz2 | |
FindThreads: Try pthreads with no special option first (#11333)
QNX has the phtread stuff in the standard library. The best way would
IMHO be to check if a program that uses pthread_* can be successfully
linked without specifying any linker option before trying out the
different flags.
Diffstat (limited to 'Modules/FindThreads.cmake')
| -rw-r--r-- | Modules/FindThreads.cmake | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/Modules/FindThreads.cmake b/Modules/FindThreads.cmake index a6c2df8..21614fb 100644 --- a/Modules/FindThreads.cmake +++ b/Modules/FindThreads.cmake @@ -23,6 +23,7 @@ INCLUDE (CheckIncludeFiles) INCLUDE (CheckLibraryExists) +INCLUDE (CheckSymbolExists) SET(Threads_FOUND FALSE) # Do we have sproc? @@ -44,33 +45,41 @@ ELSE() # 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") + # Check if pthread functions are in normal C library + CHECK_SYMBOL_EXISTS(pthread_create pthread.h CMAKE_HAVE_LIBC_CREATE) + IF(CMAKE_HAVE_LIBC_CREATE) + SET(CMAKE_THREAD_LIBS_INIT "") 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(NOT CMAKE_HAVE_THREADS_LIBRARY) + # 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() - 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") + # 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(CMAKE_HAVE_THREADS_LIBRARY 1) SET(Threads_FOUND TRUE) ENDIF() - ENDIF(CMAKE_SYSTEM MATCHES "SunOS.*") + 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 CMAKE_HAVE_THREADS_LIBRARY) ENDIF(NOT THREADS_HAVE_PTHREAD_ARG) IF(NOT CMAKE_HAVE_THREADS_LIBRARY) @@ -111,7 +120,7 @@ ELSE() ENDIF(CMAKE_HAVE_PTHREAD_H) ENDIF() -IF(CMAKE_THREAD_LIBS_INIT) +IF(CMAKE_THREAD_LIBS_INIT OR CMAKE_HAVE_LIBC_CREATE) SET(CMAKE_USE_PTHREADS_INIT 1) SET(Threads_FOUND TRUE) ENDIF() |