cmake: add <pthread.h> only for non-win32

Fixes: b2b4b4d74e78a3e4fe7a74224d1e6aada5bde351 ("cmake: add <pthread.h>
into CMAKE_REQUIRED_INCLUDES for sizeof(pthread_t)")

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 275c8e99ccb63bccef7869e095a5224dd8cffd04..22c13eac48504dcd6e80531b4e50bf0ab664c9df 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -476,7 +476,9 @@ else()
 endif()
 
 if (NOT EVENT__DISABLE_THREAD_SUPPORT)
-    list(APPEND CMAKE_EXTRA_INCLUDE_FILES pthread.h)
+    if (NOT WIN32)
+        list(APPEND CMAKE_EXTRA_INCLUDE_FILES pthread.h)
+    endif()
     CHECK_TYPE_SIZE(pthread_t EVENT__SIZEOF_PTHREAD_T)
 endif()