Support win32 long path for cross compiled build

Author: liujisi

src/google/protobuf/compiler/command_line_interface.cc

@@ -100,7 +100,7 @@ namespace compiler {
 #endif
 
 namespace {
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::access;

src/google/protobuf/compiler/command_line_interface_unittest.cc

@@ -70,7 +70,7 @@ namespace google {
 namespace protobuf {
 namespace compiler {
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::access;

src/google/protobuf/compiler/importer.cc

@@ -65,7 +65,7 @@ namespace google {
 namespace protobuf {
 namespace compiler {
 
-#ifdef _MSC_VER
+#ifdef _WIN32
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::access;

src/google/protobuf/compiler/objectivec/objectivec_helpers.cc

@@ -50,11 +50,6 @@
 #include <google/protobuf/stubs/io_win32.h>
 #include <google/protobuf/stubs/strutil.h>
 
-#if defined(_MSC_VER)
-// DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
-// them like we do below.
-using google::protobuf::internal::win32::open;
-#endif
 
 // NOTE: src/google/protobuf/compiler/plugin.cc makes use of cerr for some
 // error cases, so it seems to be ok to use as a back door for errors.
@@ -64,6 +59,16 @@ namespace protobuf {
 namespace compiler {
 namespace objectivec {
 
+// <io.h> is transitively included in this file. Import the functions explicitly
+// in this port namespace to avoid ambiguous definition.
+namespace posix {
+#ifdef _WIN32
+using ::google::protobuf::internal::win32::open;
+#else
+using ::open;
+#endif
+}  // namespace port
+
 Options::Options() {
   // Default is the value of the env for the package prefixes.
   const char* file_path = getenv("GPB_OBJC_EXPECTED_PACKAGE_PREFIXES");
@@ -1469,7 +1474,7 @@ bool ParseSimpleFile(
     const string& path, LineConsumer* line_consumer, string* out_error) {
   int fd;
   do {
-    fd = open(path.c_str(), O_RDONLY);
+    fd = posix::open(path.c_str(), O_RDONLY);
   } while (fd < 0 && errno == EINTR);
   if (fd < 0) {
     *out_error =

src/google/protobuf/compiler/plugin.cc

@@ -54,7 +54,7 @@ namespace google {
 namespace protobuf {
 namespace compiler {
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::setmode;

src/google/protobuf/io/zero_copy_stream_impl.cc

@@ -56,9 +56,6 @@ namespace io {
 // Win32 lseek is broken:  If invoked on a non-seekable file descriptor, its
 // return value is undefined.  We re-define it to always produce an error.
 #define lseek(fd, offset, origin) ((off_t)-1)
-#endif
-
-#ifdef _MSC_VER
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::access;

src/google/protobuf/io/zero_copy_stream_unittest.cc

@@ -83,9 +83,6 @@ namespace {
 
 #ifdef _WIN32
 #define pipe(fds) _pipe(fds, 4096, O_BINARY)
-#endif
-
-#ifdef _MSC_VER
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::access;

src/google/protobuf/message_unittest.cc

@@ -63,7 +63,7 @@
 namespace google {
 namespace protobuf {
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::close;

src/google/protobuf/stubs/io_win32.cc

@@ -39,7 +39,7 @@
 //
 // This file is only used on Windows, it's empty on other platforms.
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 
 // Comment this out to fall back to using the ANSI versions (open, mkdir, ...)
 // instead of the Unicode ones (_wopen, _wmkdir, ...). Doing so can be useful to
@@ -358,5 +358,5 @@ wstring testonly_path_to_winpath(const string& path) {
 }  // namespace protobuf
 }  // namespace google
 
-#endif  // defined(_MSC_VER)
+#endif  // defined(_WIN32)
 

src/google/protobuf/stubs/io_win32.h

@@ -52,7 +52,6 @@
 
 // Compilers on Windows other than MSVC (e.g. Cygwin, MinGW32) define the
 // following functions already, except for mkdir.
-#ifdef _MSC_VER
 namespace google {
 namespace protobuf {
 namespace internal {
@@ -77,9 +76,6 @@ LIBPROTOBUF_EXPORT std::wstring testonly_path_to_winpath(
 }  // namespace internal
 }  // namespace protobuf
 }  // namespace google
-#else  // _MSC_VER
-#define mkdir(name, mode) mkdir(name)
-#endif // !_MSC_VER
 
 #ifndef W_OK
 #define W_OK 02  // not defined by MSVC for whatever reason
@@ -100,5 +96,3 @@ LIBPROTOBUF_EXPORT std::wstring testonly_path_to_winpath(
 #endif  // defined(_WIN32)
 
 #endif  // GOOGLE_PROTOBUF_STUBS_IO_WIN32_H__
-
-

src/google/protobuf/stubs/io_win32_unittest.cc

@@ -34,7 +34,7 @@
 //
 // This file is only used on Windows, it's empty on other platforms.
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 
 #define WIN32_LEAN_AND_MEAN
 #include <errno.h>
@@ -369,5 +369,5 @@ TEST_F(IoWin32Test, AsWindowsPathTest) {
 }  // namespace protobuf
 }  // namespace google
 
-#endif  // defined(_MSC_VER)
+#endif  // defined(_WIN32)
 

src/google/protobuf/testing/file.cc

@@ -57,7 +57,7 @@ namespace protobuf {
 // them like we do below.
 #endif
 
-#ifdef _MSC_VER
+#ifdef _WIN32
 using google::protobuf::internal::win32::access;
 using google::protobuf::internal::win32::chdir;
 using google::protobuf::internal::win32::fopen;

src/google/protobuf/testing/googletest.cc

@@ -52,7 +52,7 @@
 namespace google {
 namespace protobuf {
 
-#ifdef _MSC_VER
+#ifdef _WIN32
 // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
 // them like we do below.
 using google::protobuf::internal::win32::close;