[llvm-commits] [PATCH] Fix CMake check for pthread_mutex_lock

[Brad Smith]

On Sat, Aug 18, 2012 at 03:03:37AM -0400, Brad Smith wrote:
> The attached diff for the CMake build infrastructure fixes
> the check for pthead_mutex_lock. CMake is attempting to build
> a binary to check for the existence of the symbol but not
> linking in libpthread.
> 
> /usr/bin/cc   -O2 -pipe        CMakeFiles/cmTryCompileExec2801244708.dir/CheckSymbolExists.c.o  -o cmTryCompileExec2801244708  -lm -Wl,-rpath-link,/usr/X11R6/lib:/us
> r/local/lib
> CMakeFiles/cmTryCompileExec2801244708.dir/CheckSymbolExists.c.o(.text+0x6): In function `main':
> : undefined reference to `pthread_mutex_lock'
> collect2: ld returned 1 exit status
 
ping.

> Index: cmake/config-ix.cmake
> ===================================================================
> --- cmake/config-ix.cmake	(revision 161828)
> +++ cmake/config-ix.cmake	(working copy)
> @@ -87,6 +87,7 @@
>    check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
>    check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
>    check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
> +  check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
>    check_library_exists(dl dlopen "" HAVE_LIBDL)
>  endif()
>  
> @@ -134,9 +135,6 @@
>  check_symbol_exists(strcmp string.h HAVE_STRCMP)
>  check_symbol_exists(strdup string.h HAVE_STRDUP)
>  check_symbol_exists(strrchr string.h HAVE_STRRCHR)
> -if( NOT PURE_WINDOWS )
> -  check_symbol_exists(pthread_mutex_lock pthread.h HAVE_PTHREAD_MUTEX_LOCK)
> -endif()
>  check_symbol_exists(sbrk unistd.h HAVE_SBRK)
>  check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48)
>  if( HAVE_RAND48_SRAND48 )

> _______________________________________________
> llvm-commits mailing list
> llvm-commits at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.