Enable online features for Unix (#486)

src/CMakeLists.txt

@@ -34,13 +34,6 @@ elseif(UNIX)
 	if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
 		add_compile_options(-Wno-ambiguous-reversed-operator)
 	endif()
-	# most linux environments should enable pie by default, but make sure just in case.
-	# the same cannot be said for no executable stack which some linkers
-	# and configurations thereof might enable due to the assembly in the project
-	if(NOT APPLE)
-		add_compile_options(-fpie)
-		add_link_options(-pie -z noexecstack)
-	endif()
 
     add_compile_options(-Wno-multichar -Wno-invalid-offsetof -Wno-switch -Wno-ignored-attributes -Wno-deprecated-enum-enum-conversion)
 endif()
@@ -129,6 +122,12 @@ target_link_libraries(CemuBin PRIVATE
 	SDL2::SDL2
 )
 
+if(UNIX AND NOT APPLE)
+	# due to nasm output some linkers will make stack executable.
+	# cemu does not require this so we explicity disable it.
+	target_link_options(CemuBin PRIVATE -z noexecstack)
+endif()
+
 if (ENABLE_WXWIDGETS)
 	target_link_libraries(CemuBin PRIVATE wx::base wx::core)
 endif()

src/Cafe/OS/libs/nlibcurl/nlibcurl.cpp

@@ -455,11 +455,6 @@ void export_curl_multi_fdset(PPCInterpreter_t* hCPU)
 	ppcDefineParamMEMPTR(exceptionFd, wu_fd_set, 3);
 	ppcDefineParamU32BEPtr(maxFd, 4);
 
-#if BOOST_OS_LINUX || BOOST_OS_MACOS
-	cemuLog_log(LogType::Force, "curl_multi_fdset(...) - todo");
-
-	osLib_returnFromFunction(hCPU, 0);
-#else
 	fd_set h_readFd;
 	fd_set h_writeFd;
 	fd_set h_exceptionFd;
@@ -475,17 +470,36 @@ void export_curl_multi_fdset(PPCInterpreter_t* hCPU)
 	nsysnet::wuResetFD(exceptionFd.GetPtr());
 
 	sint32 c_maxFD = -1;
-	// fd read set
-	for (uint32 i = 0; i < h_readFd.fd_count; i++)
+
+	auto hostFdSet = [&](SOCKET s, wu_fd_set* fds)
 	{
-		sint32 wuSocket = nsysnet_getVirtualSocketHandleFromHostHandle(h_readFd.fd_array[i]);
+		sint32 wuSocket = nsysnet_getVirtualSocketHandleFromHostHandle(s);
 		if (wuSocket < 0)
-			wuSocket = nsysnet_createVirtualSocketFromExistingSocket(h_readFd.fd_array[i]);
+			wuSocket = nsysnet_createVirtualSocketFromExistingSocket(s);
 		if (wuSocket >= 0)
 		{
 			c_maxFD = std::max(wuSocket, c_maxFD);
-			nsysnet::wuSetFD(readFd.GetPtr(), wuSocket);
+			nsysnet::wuSetFD(fds, wuSocket);
 		}
+	};
+
+#if BOOST_OS_UNIX
+	for (int s = 0; s < h_maxFd + 1; s++) 
+	{
+		if(FD_ISSET(s, &h_readFd))
+			hostFdSet(s, readFd.GetPtr());
+
+		if(FD_ISSET(s, &h_writeFd))
+			hostFdSet(s, writeFd.GetPtr());
+
+		if(FD_ISSET(s, &h_exceptionFd))
+			hostFdSet(s, exceptionFd.GetPtr());
+	}
+#else
+	// fd read set
+	for (uint32 i = 0; i < h_readFd.fd_count; i++)
+	{
+		hostFdSet(h_readFd.fd_array[i], readFd.GetPtr());
 	}
 	// fd write set
 	for (uint32 i = 0; i < h_writeFd.fd_count; i++)
@@ -497,11 +511,10 @@ void export_curl_multi_fdset(PPCInterpreter_t* hCPU)
 	{
 		cemu_assert_debug(false);
 	}
+#endif
 
 	*maxFd = c_maxFD;
 	osLib_returnFromFunction(hCPU, result);
-#endif
-
 }
 
 void export_curl_multi_setopt(PPCInterpreter_t* hCPU)