Index: cfe/trunk/test/Analysis/checker-plugins.c
===================================================================
--- cfe/trunk/test/Analysis/checker-plugins.c
+++ cfe/trunk/test/Analysis/checker-plugins.c
@@ -1,9 +1,9 @@
+// REQUIRES: plugins
+
 // RUN: %clang_analyze_cc1 -verify %s \
 // RUN:   -load %llvmshlibdir/SampleAnalyzerPlugin%pluginext \
 // RUN:   -analyzer-checker='example.MainCallChecker'
 
-// REQUIRES: plugins
-
 // Test that the MainCallChecker example analyzer plugin loads and runs.
 
 int main();
Index: cfe/trunk/test/CMakeLists.txt
===================================================================
--- cfe/trunk/test/CMakeLists.txt
+++ cfe/trunk/test/CMakeLists.txt
@@ -24,7 +24,8 @@
   CLANG_ENABLE_STATIC_ANALYZER
   ENABLE_BACKTRACES
   HAVE_LIBZ
-  LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
+  LLVM_ENABLE_PER_TARGET_RUNTIME_DIR
+  LLVM_ENABLE_PLUGINS)
 
 configure_lit_site_cfg(
   ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.py.in
Index: cfe/trunk/test/lit.cfg.py
===================================================================
--- cfe/trunk/test/lit.cfg.py
+++ cfe/trunk/test/lit.cfg.py
@@ -85,13 +85,7 @@
                              os.path.join(config.clang_tools_dir, 'hmaptool'))))
 
 # Plugins (loadable modules)
-# TODO: This should be supplied by Makefile or autoconf.
-if sys.platform in ['win32', 'cygwin']:
-    has_plugins = config.enable_shared
-else:
-    has_plugins = True
-
-if has_plugins and config.llvm_plugin_ext:
+if config.has_plugins and config.llvm_plugin_ext:
     config.available_features.add('plugins')
 
 # Set available features we allow tests to conditionalize on.
Index: cfe/trunk/test/lit.site.cfg.py.in
===================================================================
--- cfe/trunk/test/lit.site.cfg.py.in
+++ cfe/trunk/test/lit.site.cfg.py.in
@@ -27,6 +27,7 @@
 config.host_arch = "@HOST_ARCH@"
 config.python_executable = "@PYTHON_EXECUTABLE@"
 config.use_z3_solver = lit_config.params.get('USE_Z3_SOLVER', "@USE_Z3_SOLVER@")
+config.has_plugins = @LLVM_ENABLE_PLUGINS@
 
 # Support substitution of the tools and libs dirs with user parameters. This is
 # used when we can't determine the tool dir at configuration time.
Index: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
===================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
@@ -920,14 +920,10 @@
 
 # Plugin support
 # FIXME: Make this configurable.
-if(WIN32 OR CYGWIN)
-  if(BUILD_SHARED_LIBS OR LLVM_BUILD_LLVM_DYLIB)
-    set(LLVM_ENABLE_PLUGINS ON)
-  else()
-    set(LLVM_ENABLE_PLUGINS OFF)
-  endif()
-else()
+if(BUILD_SHARED_LIBS OR LLVM_BUILD_LLVM_DYLIB)
   set(LLVM_ENABLE_PLUGINS ON)
+else()
+  set(LLVM_ENABLE_PLUGINS OFF)
 endif()
 
 # By default we should enable LLVM_ENABLE_IDE only for multi-configuration