diff --git a/libunwind/cmake/config-ix.cmake b/libunwind/cmake/config-ix.cmake
--- a/libunwind/cmake/config-ix.cmake
+++ b/libunwind/cmake/config-ix.cmake
@@ -16,6 +16,25 @@
   endif ()
 endif()
 
+# The compiler driver may be implicitly trying to link against libunwind,
+# which obviously might not work when building libunwind itself. Try to
+# check if -unwindlib=none is supported, and use that if possible.
+#
+# However, a plain check_c_compiler_flag(-unwindlib=none) would also fail, as
+# the tested flag is only added to the compilation command (letting the
+# compiler error out if it is unsupported), but not included in the linking
+# command (which still fails due to implicitly trying to link against the
+# possibly missing libunwind). Therefore, we must add it directly to
+# CMAKE_REQUIRED_FLAGS (which is included both when compiling and linking),
+# then do a dummy test with check_c_compiler_flag, and revert the change to
+# CMAKE_REQUIRED_FLAGS if it didn't work out.
+set(CMAKE_REQUIRED_FLAGS_ORIG "${CMAKE_REQUIRED_FLAGS}")
+set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -unwindlib=none")
+check_c_compiler_flag("" LIBUNWIND_SUPPORTS_UNWINDLIB_NONE_FLAG)
+if (NOT LIBUNWIND_SUPPORTS_UNWINDLIB_NONE_FLAG)
+  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_ORIG}")
+endif()
+
 # libunwind is using -nostdlib++ at the link step when available,
 # otherwise -nodefaultlibs is used. We want all our checks to also
 # use one of these options, otherwise we may end up with an inconsistency between
diff --git a/libunwind/src/CMakeLists.txt b/libunwind/src/CMakeLists.txt
--- a/libunwind/src/CMakeLists.txt
+++ b/libunwind/src/CMakeLists.txt
@@ -83,6 +83,7 @@
 endif()
 
 # Setup flags.
+add_link_flags_if(LIBUNWIND_SUPPORTS_UNWINDLIB_NONE_FLAG -unwindlib=none)
 if (LIBUNWIND_SUPPORTS_NOSTDLIBXX_FLAG)
   add_link_flags_if_supported(-nostdlib++)
 else()