diff options
| -rw-r--r-- | Modules/FindThreads.cmake | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/Modules/FindThreads.cmake b/Modules/FindThreads.cmake index a2f3fa3..919392a 100644 --- a/Modules/FindThreads.cmake +++ b/Modules/FindThreads.cmake @@ -118,18 +118,8 @@ if(CMAKE_HAVE_PTHREAD_H) set(CMAKE_HAVE_THREADS_LIBRARY) if(NOT THREADS_HAVE_PTHREAD_ARG) # Check if pthread functions are in normal C library. - # If the pthread functions already exist in C library, we could just use - # them instead of linking to the additional pthread library. We could - # try to check any pthread symbol name, but here is an exception. If we - # use clang asan build, we will find the pthread_create() symbol in the - # libc(libasan). However, it doesn't have the full pthread implementation. - # So, we can't assume that we have the pthread implementation in libc - # using the pthread_create() checking here. Then, we turn to check the - # pthread_kill() symbol instead. It is in the "signal.h" header, but - # the purpose of this check is to verify that the pthread API works with - # pure libc, so verify that "pthread.h" can be included too. - CHECK_SYMBOL_EXISTS(pthread_kill "signal.h;pthread.h" CMAKE_HAVE_LIBC_PTHREAD_KILL) - if(CMAKE_HAVE_LIBC_PTHREAD_KILL) + 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) @@ -154,7 +144,7 @@ if(CMAKE_HAVE_PTHREAD_H) _check_pthreads_flag() endif() -if(CMAKE_THREAD_LIBS_INIT OR CMAKE_HAVE_LIBC_PTHREAD_KILL) +if(CMAKE_THREAD_LIBS_INIT OR CMAKE_HAVE_LIBC_CREATE) set(CMAKE_USE_PTHREADS_INIT 1) set(Threads_FOUND TRUE) endif() |