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| author | Brad King <brad.king@kitware.com> | 2022-08-08 12:41:57 -0400 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2022-08-08 12:41:57 -0400 |
| commit | 720396378890ee93158343ff3d681423bf0bdd4a (patch) | |
| tree | 102781ea7e5f3beceb24016ea18b48f95f301bcb | |
| parent | 4be24f031a4829db75b85062cc67125035d8831e (diff) | |
| download | cmake-720396378890ee93158343ff3d681423bf0bdd4a.tar.gz | |
FindThreads: Skip check for -pthread flag when targeting the MSVC ABI
Since commit 3257c34073 (FindThreads: avoid failing in AIX when using
-D_XOPEN_SOURCE=500, 2022-04-30, v3.24.0-rc1~197^2) we no longer check
for `pthreads.h` before checking for the `-pthread` flag. Compilers
targeting the MSVC ABI do not have such a flag, so avoid performing the
check unnecessarily.
Fixes: #23829
| -rw-r--r-- | Modules/FindThreads.cmake | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Modules/FindThreads.cmake b/Modules/FindThreads.cmake index a2304c2eb1..a675fd6755 100644 --- a/Modules/FindThreads.cmake +++ b/Modules/FindThreads.cmake @@ -122,7 +122,11 @@ endmacro() macro(_threads_check_flag_pthread) if(NOT Threads_FOUND) # If we did not find -lpthreads, -lpthread, or -lthread, look for -pthread - if(NOT DEFINED THREADS_HAVE_PTHREAD_ARG) + # except on compilers known to not have it. + if(MSVC) + # Compilers targeting the MSVC ABI do not have a -pthread flag. + set(THREADS_HAVE_PTHREAD_ARG FALSE) + elseif(NOT DEFINED THREADS_HAVE_PTHREAD_ARG) message(CHECK_START "Check if compiler accepts -pthread") if(CMAKE_C_COMPILER_LOADED) set(_threads_src ${CMAKE_CURRENT_LIST_DIR}/CheckForPthreads.c) |