[lldb/CMake] Initialize LLDB_ENABLE_POSIX based on the UNIX variable.
diff --git a/lldb/cmake/modules/LLDBGenerateConfig.cmake b/lldb/cmake/modules/LLDBGenerateConfig.cmake
index bee17b5..0d3a7fd 100644
--- a/lldb/cmake/modules/LLDBGenerateConfig.cmake
+++ b/lldb/cmake/modules/LLDBGenerateConfig.cmake
@@ -24,7 +24,11 @@
# so that the check isn't duplicated, but we translate them into the LLDB names
# so that I don't have to change all the uses at the moment.
set(LLDB_ENABLE_TERMIOS ${HAVE_TERMIOS_H})
-set(LLDB_ENABLE_POSIX NOT UNIX)
+if (UNIX)
+ set(LLDB_ENABLE_POSIX ON)
+else()
+ set(LLDB_ENABLE_POSIX OFF)
+endif()
if(NOT LLDB_CONFIG_HEADER_INPUT)
set(LLDB_CONFIG_HEADER_INPUT ${LLDB_INCLUDE_ROOT}/lldb/Host/Config.h.cmake)