cmake: avoid poll() on macOS

... like we do in configure builds. Since poll() on macOS is not
reliable enough.

Reported-by: marc-groundctl
Fixes #7595
Closes #7619

diff --git a/CMake/OtherTests.cmake b/CMake/OtherTests.cmake
index 7f369938f91f21af6068efc7540ad4a85c37d60c..5cddf4afa9b04540ceec0652a3f80094c9e76db4 100644 (file)
--- a/CMake/OtherTests.cmake
+++ b/CMake/OtherTests.cmake
@@ -237,6 +237,9 @@ endif()
 unset(CMAKE_TRY_COMPILE_TARGET_TYPE)
 
 if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+  if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+  # only try this on non-macOS
+
   # if not cross-compilation...
   include(CheckCSourceRuns)
   set(CMAKE_REQUIRED_FLAGS "")
@@ -279,5 +282,6 @@ if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
         }
         return 0;
     }" HAVE_POLL_FINE)
+  endif()
 endif()