Supports building gtest as a DLL (by Vlad Losev).

git-svn-id: http://googletest.googlecode.com/svn/trunk@388 861a406c-534a-0410-8894-cb66d6ee9925

14 files changed, 180 insertions, 110 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa16fa0..0cdb2e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,10 +54,10 @@ endif()
 #
 # Defines the gtest & gtest_main libraries.  User tests should link
 # with one of them.
-
-function(cxx_library name cxx_flags)
+function(cxx_library_with_type name type cxx_flags)
+  # type can be either STATIC or SHARED to denote a static or shared library.
   # ARGN refers to additional arguments after 'cxx_flags'.
-  add_library(${name} STATIC ${ARGN})
+  add_library(${name} ${type} ${ARGN})
   set_target_properties(${name}
     PROPERTIES
     COMPILE_FLAGS "${cxx_flags}")
@@ -66,8 +66,22 @@ function(cxx_library name cxx_flags)
     endif()
 endfunction()
 
-cxx_library(gtest "${cxx_default}" src/gtest-all.cc)
-cxx_library(gtest_main "${cxx_default}" src/gtest_main.cc)
+function(cxx_static_library name cxx_flags)
+  cxx_library_with_type(${name} STATIC "${cxx_flags}" ${ARGN})
+endfunction()
+
+function(cxx_shared_library name cxx_flags)
+  cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
+endfunction()
+
+function(cxx_library name cxx_flags)
+  # TODO(vladl@google.com): Make static/shared a user option.
+  cxx_static_library(${name} "${cxx_flags}" ${ARGN})
+endfunction()
+
+# Static versions of Google Test libraries.
+cxx_static_library(gtest "${cxx_default}" src/gtest-all.cc)
+cxx_static_library(gtest_main "${cxx_default}" src/gtest_main.cc)
 target_link_libraries(gtest_main gtest)
 
 ########################################################################
@@ -85,16 +99,22 @@ option(build_gtest_samples "Build gtest's sample programs." OFF)
 # creates a named target that depends on the given lib and is built
 # from the given source files.  dir/name.cc is implicitly included in
 # the source file list.
-function(cxx_executable name dir lib)
+function(cxx_executable_with_flags name dir cxx_flags lib)
   add_executable(${name}
     ${dir}/${name}.cc
     ${ARGN})
-  set_target_properties(${name}
-    PROPERTIES
-    COMPILE_FLAGS "${cxx_default}")
+  if (cxx_flags)
+    set_target_properties(${name}
+      PROPERTIES
+      COMPILE_FLAGS "${cxx_flags}")
+  endif()
   target_link_libraries(${name} ${lib})
 endfunction()
 
+function(cxx_executable name dir lib)
+  cxx_executable_with_flags(${name} ${dir} "${cxx_default}" ${lib} ${ARGN})
+endfunction()
+
 if (build_gtest_samples)
   cxx_executable(sample1_unittest samples gtest_main samples/sample1.cc)
   cxx_executable(sample2_unittest samples gtest_main samples/sample2.cc)
@@ -207,6 +227,25 @@ if (build_all_gtest_tests)
   cxx_test_with_flags(gtest_no_rtti_unittest "${cxx_no_rtti}"
     gtest_main_no_rtti test/gtest_unittest.cc)
 
+  set(cxx_use_shared_gtest "${cxx_default} -DGTEST_LINKED_AS_SHARED_LIBRARY=1")
+  set(cxx_build_shared_gtest "${cxx_default} -DGTEST_CREATE_SHARED_LIBRARY=1")
+  if (MSVC)
+    # Disables the "class 'X' needs to have dll-interface to be used
+    # by clients of class 'Y'" warning. This particularly concerns generic
+    # classes like vector that MS doesn't mark as exported.
+    set(cxx_use_shared_gtest "${cxx_use_shared_gtest} -wd4251")
+    set(cxx_build_shared_gtest "${cxx_build_shared_gtest} -wd4251")
+  endif()
+
+  cxx_shared_library(gtest_dll "${cxx_build_shared_gtest}"
+    src/gtest-all.cc)
+
+  # TODO(vladl): This and the next tests may not run in the hermetic
+  # environment on Windows. Re-evaluate and possibly make them
+  # platform-conditional after implementing hermetic builds.
+  cxx_test_with_flags(gtest_dll_test_ "${cxx_use_shared_gtest}"
+    gtest_dll test/gtest_dll_test_.cc)
+
   if (NOT(MSVC AND (MSVC_VERSION EQUAL 1600)))
     # The C++ Standard specifies tuple_element<int, class>.
     # Yet MSVC 10's <utility> declares tuple_element<size_t, class>.
diff --git a/include/gtest/gtest-death-test.h b/include/gtest/gtest-death-test.h
index fdb497f..121dc1f 100644
--- a/include/gtest/gtest-death-test.h
+++ b/include/gtest/gtest-death-test.h
@@ -176,7 +176,7 @@ GTEST_DECLARE_string_(death_test_style);
 // Two predicate classes that can be used in {ASSERT,EXPECT}_EXIT*:
 
 // Tests that an exit code describes a normal exit with a given exit code.
-class ExitedWithCode {
+class GTEST_API_ ExitedWithCode {
  public:
   explicit ExitedWithCode(int exit_code);
   bool operator()(int exit_status) const;
@@ -190,7 +190,7 @@ class ExitedWithCode {
 #if !GTEST_OS_WINDOWS
 // Tests that an exit code describes an exit due to termination by a
 // given signal.
-class KilledBySignal {
+class GTEST_API_ KilledBySignal {
  public:
   explicit KilledBySignal(int signum);
   bool operator()(int exit_status) const;
diff --git a/include/gtest/gtest-message.h b/include/gtest/gtest-message.h
index 711ef2f..f135b69 100644
--- a/include/gtest/gtest-message.h
+++ b/include/gtest/gtest-message.h
@@ -79,7 +79,7 @@ namespace testing {
 // latter (it causes an access violation if you do).  The Message
 // class hides this difference by treating a NULL char pointer as
 // "(null)".
-class Message {
+class GTEST_API_ Message {
  private:
   // The type of basic IO manipulators (endl, ends, and flush) for
   // narrow streams.
diff --git a/include/gtest/gtest-spi.h b/include/gtest/gtest-spi.h
index 2953411..c41da48 100644
--- a/include/gtest/gtest-spi.h
+++ b/include/gtest/gtest-spi.h
@@ -48,7 +48,7 @@ namespace testing {
 // generated in the same thread that created this object or it can intercept
 // all generated failures. The scope of this mock object can be controlled with
 // the second argument to the two arguments constructor.
-class ScopedFakeTestPartResultReporter
+class GTEST_API_ ScopedFakeTestPartResultReporter
     : public TestPartResultReporterInterface {
  public:
   // The two possible mocking modes of this object.
@@ -93,7 +93,7 @@ namespace internal {
 // TestPartResultArray contains exactly one failure that has the given
 // type and contains the given substring.  If that's not the case, a
 // non-fatal failure will be generated.
-class SingleFailureChecker {
+class GTEST_API_ SingleFailureChecker {
  public:
   // The constructor remembers the arguments.
   SingleFailureChecker(const TestPartResultArray* results,
diff --git a/include/gtest/gtest-test-part.h b/include/gtest/gtest-test-part.h
index dd27160..f714759 100644
--- a/include/gtest/gtest-test-part.h
+++ b/include/gtest/gtest-test-part.h
@@ -44,7 +44,7 @@ namespace testing {
 // assertion or an explicit FAIL(), ADD_FAILURE(), or SUCCESS()).
 //
 // Don't inherit from TestPartResult as its destructor is not virtual.
-class TestPartResult {
+class GTEST_API_ TestPartResult {
  public:
   // The possible outcomes of a test part (i.e. an assertion or an
   // explicit SUCCEED(), FAIL(), or ADD_FAILURE()).
@@ -120,7 +120,7 @@ std::ostream& operator<<(std::ostream& os, const TestPartResult& result);
 //
 // Don't inherit from TestPartResultArray as its destructor is not
 // virtual.
-class TestPartResultArray {
+class GTEST_API_ TestPartResultArray {
  public:
   TestPartResultArray() {}
 
@@ -155,7 +155,8 @@ namespace internal {
 // reported, it only delegates the reporting to the former result reporter.
 // The original result reporter is restored in the destructor.
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-class HasNewFatalFailureHelper : public TestPartResultReporterInterface {
+class GTEST_API_ HasNewFatalFailureHelper
+    : public TestPartResultReporterInterface {
  public:
   HasNewFatalFailureHelper();
   virtual ~HasNewFatalFailureHelper();
diff --git a/include/gtest/gtest.h b/include/gtest/gtest.h
index c6f82e7..446f028 100644
--- a/include/gtest/gtest.h
+++ b/include/gtest/gtest.h
@@ -251,7 +251,7 @@ String StreamableToString(const T& streamable) {
 //   Expected: Foo() is even
 //     Actual: it's 5
 //
-class AssertionResult {
+class GTEST_API_ AssertionResult {
  public:
   // Copy constructor.
   // Used in EXPECT_TRUE/FALSE(assertion_result).
@@ -306,14 +306,14 @@ AssertionResult& AssertionResult::operator<<(const T& value) {
 }
 
 // Makes a successful assertion result.
-AssertionResult AssertionSuccess();
+GTEST_API_ AssertionResult AssertionSuccess();
 
 // Makes a failed assertion result.
-AssertionResult AssertionFailure();
+GTEST_API_ AssertionResult AssertionFailure();
 
 // Makes a failed assertion result with the given failure message.
 // Deprecated; use AssertionFailure() << msg.
-AssertionResult AssertionFailure(const Message& msg);
+GTEST_API_ AssertionResult AssertionFailure(const Message& msg);
 
 // The abstract class that all tests inherit from.
 //
@@ -338,7 +338,7 @@ AssertionResult AssertionFailure(const Message& msg);
 //   TEST_F(FooTest, Baz) { ... }
 //
 // Test is not copyable.
-class Test {
+class GTEST_API_ Test {
  public:
   friend class internal::TestInfoImpl;
 
@@ -486,7 +486,7 @@ class TestProperty {
 // the Test.
 //
 // TestResult is not copyable.
-class TestResult {
+class GTEST_API_ TestResult {
  public:
   // Creates an empty TestResult.
   TestResult();
@@ -604,7 +604,7 @@ class TestResult {
 // The constructor of TestInfo registers itself with the UnitTest
 // singleton such that the RUN_ALL_TESTS() macro knows which tests to
 // run.
-class TestInfo {
+class GTEST_API_ TestInfo {
  public:
   // Destructs a TestInfo object.  This function is not virtual, so
   // don't inherit from TestInfo.
@@ -686,7 +686,7 @@ class TestInfo {
 // A test case, which consists of a vector of TestInfos.
 //
 // TestCase is not copyable.
-class TestCase {
+class GTEST_API_ TestCase {
  public:
   // Creates a TestCase with the given name.
   //
@@ -924,7 +924,7 @@ class EmptyTestEventListener : public TestEventListener {
 };
 
 // TestEventListeners lets users add listeners to track events in Google Test.
-class TestEventListeners {
+class GTEST_API_ TestEventListeners {
  public:
   TestEventListeners();
   ~TestEventListeners();
@@ -1011,7 +1011,7 @@ class TestEventListeners {
 //
 // This class is thread-safe as long as the methods are called
 // according to their specification.
-class UnitTest {
+class GTEST_API_ UnitTest {
  public:
   // Gets the singleton UnitTest object.  The first time this method
   // is called, a UnitTest object is constructed and returned.
@@ -1198,34 +1198,34 @@ inline Environment* AddGlobalTestEnvironment(Environment* env) {
 // updated.
 //
 // Calling the function for the second time has no user-visible effect.
-void InitGoogleTest(int* argc, char** argv);
+GTEST_API_ void InitGoogleTest(int* argc, char** argv);
 
 // This overloaded version can be used in Windows programs compiled in
 // UNICODE mode.
-void InitGoogleTest(int* argc, wchar_t** argv);
+GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);
 
 namespace internal {
 
 // These overloaded versions handle ::std::string and ::std::wstring.
-inline String FormatForFailureMessage(const ::std::string& str) {
+GTEST_API_ inline String FormatForFailureMessage(const ::std::string& str) {
   return (Message() << '"' << str << '"').GetString();
 }
 
 #if GTEST_HAS_STD_WSTRING
-inline String FormatForFailureMessage(const ::std::wstring& wstr) {
+GTEST_API_ inline String FormatForFailureMessage(const ::std::wstring& wstr) {
   return (Message() << "L\"" << wstr << '"').GetString();
 }
 #endif  // GTEST_HAS_STD_WSTRING
 
 // These overloaded versions handle ::string and ::wstring.
 #if GTEST_HAS_GLOBAL_STRING
-inline String FormatForFailureMessage(const ::string& str) {
+GTEST_API_ inline String FormatForFailureMessage(const ::string& str) {
   return (Message() << '"' << str << '"').GetString();
 }
 #endif  // GTEST_HAS_GLOBAL_STRING
 
 #if GTEST_HAS_GLOBAL_WSTRING
-inline String FormatForFailureMessage(const ::wstring& wstr) {
+GTEST_API_ inline String FormatForFailureMessage(const ::wstring& wstr) {
   return (Message() << "L\"" << wstr << '"').GetString();
 }
 #endif  // GTEST_HAS_GLOBAL_WSTRING
@@ -1391,51 +1391,51 @@ GTEST_IMPL_CMP_HELPER_(GT, > )
 // The helper function for {ASSERT|EXPECT}_STREQ.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult CmpHelperSTREQ(const char* expected_expression,
-                               const char* actual_expression,
-                               const char* expected,
-                               const char* actual);
+GTEST_API_ AssertionResult CmpHelperSTREQ(const char* expected_expression,
+                                          const char* actual_expression,
+                                          const char* expected,
+                                          const char* actual);
 
 // The helper function for {ASSERT|EXPECT}_STRCASEEQ.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult CmpHelperSTRCASEEQ(const char* expected_expression,
-                                   const char* actual_expression,
-                                   const char* expected,
-                                   const char* actual);
+GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char* expected_expression,
+                                              const char* actual_expression,
+                                              const char* expected,
+                                              const char* actual);
 
 // The helper function for {ASSERT|EXPECT}_STRNE.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult CmpHelperSTRNE(const char* s1_expression,
-                               const char* s2_expression,
-                               const char* s1,
-                               const char* s2);
+GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
+                                          const char* s2_expression,
+                                          const char* s1,
+                                          const char* s2);
 
 // The helper function for {ASSERT|EXPECT}_STRCASENE.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
-                                   const char* s2_expression,
-                                   const char* s1,
-                                   const char* s2);
+GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
+                                              const char* s2_expression,
+                                              const char* s1,
+                                              const char* s2);
 
 
 // Helper function for *_STREQ on wide strings.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult CmpHelperSTREQ(const char* expected_expression,
-                               const char* actual_expression,
-                               const wchar_t* expected,
-                               const wchar_t* actual);
+GTEST_API_ AssertionResult CmpHelperSTREQ(const char* expected_expression,
+                                          const char* actual_expression,
+                                          const wchar_t* expected,
+                                          const wchar_t* actual);
 
 // Helper function for *_STRNE on wide strings.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult CmpHelperSTRNE(const char* s1_expression,
-                               const char* s2_expression,
-                               const wchar_t* s1,
-                               const wchar_t* s2);
+GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
+                                          const char* s2_expression,
+                                          const wchar_t* s1,
+                                          const wchar_t* s2);
 
 }  // namespace internal
 
@@ -1513,16 +1513,16 @@ AssertionResult CmpHelperFloatingPointEQ(const char* expected_expression,
 // Helper function for implementing ASSERT_NEAR.
 //
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-AssertionResult DoubleNearPredFormat(const char* expr1,
-                                     const char* expr2,
-                                     const char* abs_error_expr,
-                                     double val1,
-                                     double val2,
-                                     double abs_error);
+GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
+                                                const char* expr2,
+                                                const char* abs_error_expr,
+                                                double val1,
+                                                double val2,
+                                                double abs_error);
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 // A class that enables one to stream messages to assertion macros
-class AssertHelper {
+class GTEST_API_ AssertHelper {
  public:
   // Constructor.
   AssertHelper(TestPartResult::Type type,
@@ -1853,10 +1853,10 @@ const T* TestWithParam<T>::parameter_ = NULL;
 
 // Asserts that val1 is less than, or almost equal to, val2.  Fails
 // otherwise.  In particular, it fails if either val1 or val2 is NaN.
-AssertionResult FloatLE(const char* expr1, const char* expr2,
-                        float val1, float val2);
-AssertionResult DoubleLE(const char* expr1, const char* expr2,
-                         double val1, double val2);
+GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
+                                   float val1, float val2);
+GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
+                                    double val1, double val2);
 
 
 #if GTEST_OS_WINDOWS
diff --git a/include/gtest/internal/gtest-death-test-internal.h b/include/gtest/internal/gtest-death-test-internal.h
index e98650e..e433084 100644
--- a/include/gtest/internal/gtest-death-test-internal.h
+++ b/include/gtest/internal/gtest-death-test-internal.h
@@ -64,7 +64,7 @@ const char kInternalRunDeathTestFlag[] = "internal_run_death_test";
 //               by wait(2)
 // exit code:    The integer code passed to exit(3), _exit(2), or
 //               returned from main()
-class DeathTest {
+class GTEST_API_ DeathTest {
  public:
   // Create returns false if there was an error determining the
   // appropriate action to take for the current death test; for example,
@@ -147,7 +147,7 @@ class DefaultDeathTestFactory : public DeathTestFactory {
 
 // Returns true if exit_status describes a process that was terminated
 // by a signal, or exited normally with a nonzero exit code.
-bool ExitedUnsuccessfully(int exit_status);
+GTEST_API_ bool ExitedUnsuccessfully(int exit_status);
 
 // This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
 // ASSERT_EXIT*, and EXPECT_EXIT*.
diff --git a/include/gtest/internal/gtest-internal.h b/include/gtest/internal/gtest-internal.h
index a7858f9..7bc35e2 100644
--- a/include/gtest/internal/gtest-internal.h
+++ b/include/gtest/internal/gtest-internal.h
@@ -161,7 +161,7 @@ String AppendUserMessage(const String& gtest_msg,
                          const Message& user_msg);
 
 // A helper class for creating scoped traces in user programs.
-class ScopedTrace {
+class GTEST_API_ ScopedTrace {
  public:
   // The c'tor pushes the given source file location and message onto
   // a trace stack maintained by Google Test.
@@ -240,8 +240,8 @@ inline String FormatForFailureMessage(T* pointer) {
 #endif  // GTEST_NEEDS_IS_POINTER_
 
 // These overloaded versions handle narrow and wide characters.
-String FormatForFailureMessage(char ch);
-String FormatForFailureMessage(wchar_t wchar);
+GTEST_API_ String FormatForFailureMessage(char ch);
+GTEST_API_ String FormatForFailureMessage(wchar_t wchar);
 
 // When this operand is a const char* or char*, and the other operand
 // is a ::std::string or ::string, we print this operand as a C string
@@ -287,17 +287,18 @@ GTEST_FORMAT_IMPL_(::wstring, String::ShowWideCStringQuoted)
 // The ignoring_case parameter is true iff the assertion is a
 // *_STRCASEEQ*.  When it's true, the string " (ignoring case)" will
 // be inserted into the message.
-AssertionResult EqFailure(const char* expected_expression,
-                          const char* actual_expression,
-                          const String& expected_value,
-                          const String& actual_value,
-                          bool ignoring_case);
+GTEST_API_ AssertionResult EqFailure(const char* expected_expression,
+                                     const char* actual_expression,
+                                     const String& expected_value,
+                                     const String& actual_value,
+                                     bool ignoring_case);
 
 // Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
-String GetBoolAssertionFailureMessage(const AssertionResult& assertion_result,
-                                      const char* expression_text,
-                                      const char* actual_predicate_value,
-                                      const char* expected_predicate_value);
+GTEST_API_ String GetBoolAssertionFailureMessage(
+    const AssertionResult& assertion_result,
+    const char* expression_text,
+    const char* actual_predicate_value,
+    const char* expected_predicate_value);
 
 // This template class represents an IEEE floating-point number
 // (either single-precision or double-precision, depending on the
@@ -517,7 +518,7 @@ TypeId GetTypeId() {
 // ::testing::Test, as the latter may give the wrong result due to a
 // suspected linker bug when compiling Google Test as a Mac OS X
 // framework.
-TypeId GetTestTypeId();
+GTEST_API_ TypeId GetTestTypeId();
 
 // Defines the abstract factory interface that creates instances
 // of a Test object.
@@ -550,8 +551,10 @@ class TestFactoryImpl : public TestFactoryBase {
 // {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}
 // We pass a long instead of HRESULT to avoid causing an
 // include dependency for the HRESULT type.
-AssertionResult IsHRESULTSuccess(const char* expr, long hr);  // NOLINT
-AssertionResult IsHRESULTFailure(const char* expr, long hr);  // NOLINT
+GTEST_API_ AssertionResult IsHRESULTSuccess(const char* expr,
+                                            long hr);  // NOLINT
+GTEST_API_ AssertionResult IsHRESULTFailure(const char* expr,
+                                            long hr);  // NOLINT
 
 #endif  // GTEST_OS_WINDOWS
 
@@ -590,7 +593,7 @@ typedef void (*TearDownTestCaseFunc)();
 //   factory:          pointer to the factory that creates a test object.
 //                     The newly created TestInfo instance will assume
 //                     ownership of the factory object.
-TestInfo* MakeAndRegisterTestInfo(
+GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
     const char* test_case_name, const char* name,
     const char* test_case_comment, const char* comment,
     TypeId fixture_class_id,
@@ -606,7 +609,7 @@ bool SkipPrefix(const char* prefix, const char** pstr);
 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
 
 // State of the definition of a type-parameterized test case.
-class TypedTestCasePState {
+class GTEST_API_ TypedTestCasePState {
  public:
   TypedTestCasePState() : registered_(false) {}
 
@@ -753,7 +756,7 @@ String GetCurrentOsStackTraceExceptTop(UnitTest* unit_test, int skip_count);
 // condition.
 
 // Always returns true.
-bool AlwaysTrue();
+GTEST_API_ bool AlwaysTrue();
 
 // Always returns false.
 inline bool AlwaysFalse() { return !AlwaysTrue(); }
diff --git a/include/gtest/internal/gtest-linked_ptr.h b/include/gtest/internal/gtest-linked_ptr.h
index 5304bcc..540ef4c 100644
--- a/include/gtest/internal/gtest-linked_ptr.h
+++ b/include/gtest/internal/gtest-linked_ptr.h
@@ -77,7 +77,7 @@ namespace testing {
 namespace internal {
 
 // Protects copying of all linked_ptr objects.
-GTEST_DECLARE_STATIC_MUTEX_(g_linked_ptr_mutex);
+GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_linked_ptr_mutex);
 
 // This is used internally by all instances of linked_ptr<>.  It needs to be
 // a non-template class because different types of linked_ptr<> can refer to
diff --git a/include/gtest/internal/gtest-param-util.h b/include/gtest/internal/gtest-param-util.h
index 8dec853..546a6ea 100644
--- a/include/gtest/internal/gtest-param-util.h
+++ b/include/gtest/internal/gtest-param-util.h
@@ -60,8 +60,8 @@ namespace internal {
 // fixture class for the same test case. This may happen when
 // TEST_P macro is used to define two tests with the same name
 // but in different namespaces.
-void ReportInvalidTestCaseType(const char* test_case_name,
-                               const char* file, int line);
+GTEST_API_ void ReportInvalidTestCaseType(const char* test_case_name,
+                                          const char* file, int line);
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 //
diff --git a/include/gtest/internal/gtest-port.h b/include/gtest/internal/gtest-port.h
index 4cf9663..0a372f6 100644
--- a/include/gtest/internal/gtest-port.h
+++ b/include/gtest/internal/gtest-port.h
@@ -66,6 +66,13 @@
 //                              Test's own tr1 tuple implementation should be
 //                              used.  Unused when the user sets
 //                              GTEST_HAS_TR1_TUPLE to 0.
+//   GTEST_LINKED_AS_SHARED_LIBRARY
+//                            - Define to 1 when compiling tests that use
+//                              Google Test as a shared library (known as
+//                              DLL on Windows).
+//   GTEST_CREATE_SHARED_LIBRARY
+//                            - Define to 1 when compiling Google Test itself
+//                              as a shared library.
 
 // This header defines the following utilities:
 //
@@ -558,6 +565,20 @@
 
 #endif  // GTEST_HAS_SEH
 
+#ifdef _MSC_VER
+
+#if GTEST_LINKED_AS_SHARED_LIBRARY
+#define GTEST_API_ __declspec(dllimport)
+#elif GTEST_CREATE_SHARED_LIBRARY
+#define GTEST_API_ __declspec(dllexport)
+#endif
+
+#endif  // _MSC_VER
+
+#ifndef GTEST_API_
+#define GTEST_API_
+#endif
+
 namespace testing {
 
 class Message;
@@ -570,7 +591,7 @@ typedef ::std::stringstream StrStream;
 
 // A helper for suppressing warnings on constant condition.  It just
 // returns 'condition'.
-bool IsTrue(bool condition);
+GTEST_API_ bool IsTrue(bool condition);
 
 // Defines scoped_ptr.
 
@@ -612,7 +633,7 @@ class scoped_ptr {
 
 // A simple C++ wrapper for <regex.h>.  It uses the POSIX Enxtended
 // Regular Expression syntax.
-class RE {
+class GTEST_API_ RE {
  public:
   // Constructs an RE from a string.
   RE(const ::std::string& regex) { Init(regex.c_str()); }  // NOLINT
@@ -688,7 +709,7 @@ enum GTestLogSeverity {
 // Formats log entry severity, provides a stream object for streaming the
 // log message, and terminates the message with a newline when going out of
 // scope.
-class GTestLog {
+class GTEST_API_ GTestLog {
  public:
   GTestLog(GTestLogSeverity severity, const char* file, int line);
 
@@ -1330,19 +1351,19 @@ typedef TypeWithSize<8>::Int TimeInMillis;  // Represents time in milliseconds.
 #define GTEST_FLAG(name) FLAGS_gtest_##name
 
 // Macros for declaring flags.
-#define GTEST_DECLARE_bool_(name) extern bool GTEST_FLAG(name)
+#define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
 #define GTEST_DECLARE_int32_(name) \
-    extern ::testing::internal::Int32 GTEST_FLAG(name)
+    GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
 #define GTEST_DECLARE_string_(name) \
-    extern ::testing::internal::String GTEST_FLAG(name)
+    GTEST_API_ extern ::testing::internal::String GTEST_FLAG(name)
 
 // Macros for defining flags.
 #define GTEST_DEFINE_bool_(name, default_val, doc) \
-    bool GTEST_FLAG(name) = (default_val)
+    GTEST_API_ bool GTEST_FLAG(name) = (default_val)
 #define GTEST_DEFINE_int32_(name, default_val, doc) \
-    ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
+    GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
 #define GTEST_DEFINE_string_(name, default_val, doc) \
-    ::testing::internal::String GTEST_FLAG(name) = (default_val)
+    GTEST_API_ ::testing::internal::String GTEST_FLAG(name) = (default_val)
 
 // Parses 'str' for a 32-bit signed integer.  If successful, writes the result
 // to *value and returns true; otherwise leaves *value unchanged and returns
diff --git a/include/gtest/internal/gtest-string.h b/include/gtest/internal/gtest-string.h
index 280645e..d1d0297 100644
--- a/include/gtest/internal/gtest-string.h
+++ b/include/gtest/internal/gtest-string.h
@@ -73,7 +73,7 @@ namespace internal {
 //
 // In order to make the representation efficient, the d'tor of String
 // is not virtual.  Therefore DO NOT INHERIT FROM String.
-class String {
+class GTEST_API_ String {
  public:
   // Static utility methods
 
@@ -326,7 +326,7 @@ inline ::std::ostream& operator<<(::std::ostream& os, const String& str) {
 
 // Gets the content of the StrStream's buffer as a String.  Each '\0'
 // character in the buffer is replaced with "\\0".
-String StrStreamToString(StrStream* stream);
+GTEST_API_ String StrStreamToString(StrStream* stream);
 
 // Converts a streamable value to a String.  A NULL pointer is
 // converted to "(null)".  When the input value is a ::string,
diff --git a/src/gtest_main.cc b/src/gtest_main.cc
index d20c02f..6d4d22d 100644
--- a/src/gtest_main.cc
+++ b/src/gtest_main.cc
@@ -31,7 +31,7 @@
 
 #include <gtest/gtest.h>
 
-int main(int argc, char **argv) {
+GTEST_API_ int main(int argc, char **argv) {
   std::cout << "Running main() from gtest_main.cc\n";
 
   testing::InitGoogleTest(&argc, argv);
diff --git a/test/gtest_dll_test_.cc b/test/gtest_dll_test_.cc
index 3fb6181..3bb3c76 100644
--- a/test/gtest_dll_test_.cc
+++ b/test/gtest_dll_test_.cc
@@ -29,21 +29,24 @@
 // Author: vladl@google.com (Vlad Losev)
 //
 // Tests for Google Test itself.  This verifies that Google Test can be
-// linked into an executable successfully when built as a DLL on Windows.
-// The test is not meant to check the success of test assertions employed in
-// it. It only checks that constructs in them can be successfully linked.
+// linked into an executable successfully when built as a shared library (a
+// DLL on Windows).  The test is not meant to check the success of test
+// assertions employed in it.  It only checks that constructs in them can be
+// successfully linked.
 //
 // If you add new features to Google Test's documented interface, you need to
 // add tests exercising them to this file.
 //
 // If you start having 'unresolved external symbol' linker errors in this file
-// after the changes you have made, re-generate src/gtest.def by running
-// scripts/generate_gtest_def.py.
+// after the changes you have made, you have to modify your source code to
+// export the new symbols.
 
 #include <gtest/gtest.h>
 #include <gtest/gtest-spi.h>
 
+#if GTEST_OS_WINDOWS
 #include <windows.h>
+#endif
 #include <vector>
 
 using ::std::vector;
@@ -297,18 +300,20 @@ TEST(FloatingPointComparisonAssertionTest, LinksSuccessfully) {
   EXPECT_PRED_FORMAT2(::testing::DoubleLE, 0.0, 0.001);
 }
 
+#if GTEST_OS_WINDOWS
 // Tests linking of HRESULT assertions.
 TEST(HresultAssertionTest, LinksSuccessfully) {
   EXPECT_HRESULT_SUCCEEDED(S_OK);
   EXPECT_HRESULT_FAILED(E_FAIL);
 }
+#endif  // GTEST_OS_WINDOWS
 
 #if GTEST_HAS_EXCEPTIONS
 // Tests linking of exception assertions.
 TEST(ExceptionAssertionTest, LinksSuccessfully) {
   EXPECT_THROW(throw 1, int);
   EXPECT_ANY_THROW(throw 1);
-  EXPECT_NO_THROW(int x = 1);
+  EXPECT_NO_THROW(std::vector<int> v);
 }
 #endif  // GTEST_HAS_EXCEPTIONS
 
@@ -498,6 +503,7 @@ int main(int argc, char **argv) {
   listener = listeners.default_result_printer();
   listener = listeners.default_xml_generator();
 
-  RUN_ALL_TESTS();
+  int ret_val = RUN_ALL_TESTS();
+  static_cast<void>(ret_val);
   return  0;
 }