namespace issue (#13543)

* flags

* "follow comment"

paddle/fluid/platform/dynload/cublas.h

@@ -55,7 +55,7 @@ extern void *cublas_dso_handle;
   struct DynLoad__##__name {                         \
     template <typename... Args>                      \
     inline cublasStatus_t operator()(Args... args) { \
-      return __name(args...);                        \
+      return ::__name(args...);                      \
     }                                                \
   };                                                 \
   extern DynLoad__##__name __name

paddle/fluid/platform/dynload/cudnn.h

@@ -13,6 +13,9 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #pragma once
+#define GLOG_NO_ABBREVIATED_SEVERITIES
+#define GOOGLE_GLOG_DLL_DECL
+#include <glog/logging.h>
 
 #include <cudnn.h>
 #include <mutex>  // NOLINT
@@ -50,8 +53,8 @@ extern void EnforceCUDNNLoaded(const char* fn_name);
 #define DECLARE_DYNAMIC_LOAD_CUDNN_WRAP(__name)     \
   struct DynLoad__##__name {                        \
     template <typename... Args>                     \
-    auto operator()(Args... args) -> decltype(__name(args...)) { \
-      return __name(args...);                                    \
+    inline cudnnStatus_t operator()(Args... args) { \
+      return ::__name(args...);                     \
     }                                               \
   };                                                \
   extern DynLoad__##__name __name

paddle/fluid/platform/dynload/curand.h

@@ -44,7 +44,7 @@ extern void *curand_dso_handle;
   struct DynLoad__##__name {                     \
     template <typename... Args>                  \
     curandStatus_t operator()(Args... args) {    \
-      return __name(args...);                    \
+      return ::__name(args...);                  \
     }                                            \
   };                                             \
   extern DynLoad__##__name __name

paddle/fluid/platform/dynload/dynamic_loader.cc

@@ -107,7 +107,11 @@ static inline void* GetDsoHandleFromDefaultPath(const std::string& dso_path,
 static inline void* GetDsoHandleFromSearchPath(const std::string& search_root,
                                                const std::string& dso_name,
                                                bool throw_on_error = true) {
+#if !defined(_WIN32)
   int dynload_flags = RTLD_LAZY | RTLD_LOCAL;
+#else
+  int dynload_flags = 0;
+#endif  // !_WIN32
   void* dso_handle = nullptr;
 
   std::string dlPath = dso_name;
@@ -117,10 +121,15 @@ static inline void* GetDsoHandleFromSearchPath(const std::string& search_root,
     // search xxx.so from custom path
     dlPath = join(search_root, dso_name);
     dso_handle = dlopen(dlPath.c_str(), dynload_flags);
+#if !defined(_WIN32)
+    auto errorno = dlerror();
+#else
+    auto errorno = GetLastError();
+#endif  // !_WIN32
     // if not found, search from default path
     if (nullptr == dso_handle) {
       LOG(WARNING) << "Failed to find dynamic library: " << dlPath << " ("
-                   << dlerror() << ")";
+                   << errorno << ")";
       if (dlPath.find("nccl") != std::string::npos) {
         std::cout
             << "You may need to install 'nccl2' from NVIDIA official website: "
@@ -139,10 +148,15 @@ static inline void* GetDsoHandleFromSearchPath(const std::string& search_root,
       "export LD_LIBRARY_PATH=... \n Note: After Mac OS 10.11, "
       "using the DYLD_LIBRARY_PATH is impossible unless System "
       "Integrity Protection (SIP) is disabled.";
+#if !defined(_WIN32)
+  auto errorno = dlerror();
+#else
+  auto errorno = GetLastError();
+#endif  // !_WIN32
   if (throw_on_error) {
-    PADDLE_ENFORCE(nullptr != dso_handle, error_msg, dlPath, dlerror());
+    PADDLE_ENFORCE(nullptr != dso_handle, error_msg, dlPath, errorno);
   } else if (nullptr == dso_handle) {
-    LOG(WARNING) << string::Sprintf(error_msg, dlPath, dlerror());
+    LOG(WARNING) << string::Sprintf(error_msg, dlPath, errorno);
   }
 
   return dso_handle;