protobuf_grpc: google serializing and RPC library

protobuf : 3.9.3 grpc : 1.24.0 This a new version of the port with a vastly reduced port size. Issue #190
2019-09-20 11:18:30 +02:00
parent dfe284836e
commit e0f557c050
45 changed files with 7159 additions and 0 deletions
--- a/src/lib/grpc/files.list
+++ b/src/lib/grpc/files.list
--- a/src/lib/grpc/patches/01_mutex.patch
+++ b/src/lib/grpc/patches/01_mutex.patch
@@ -0,0 +1,110 @@
+commit b4f45e0fa3e07a91623b1039dfea8dfa77f792e0
+Author: Pirmin Duss <pirmin.duss@gapfruit.com>
+Date:   Mon Sep 23 15:15:49 2019 +0200
+
+    mutex fixes
+
+diff --git a/include/grpc/impl/codegen/sync_custom.h b/include/grpc/impl/codegen/sync_custom.h
+index 69b1bf6..dd0bb95 100644
+--- a/include/grpc/impl/codegen/sync_custom.h
+++ b/include/grpc/impl/codegen/sync_custom.h
+@@ -21,15 +21,15 @@
+ 
+ #include <grpc/impl/codegen/port_platform.h>
+ 
+-#include <grpc/impl/codegen/sync_generic.h>
+#include <base/lock.h>
+ 
+ /* Users defining GPR_CUSTOM_SYNC need to define the following macros. */
+ 
+ #ifdef GPR_CUSTOM_SYNC
+ 
+-typedef GPR_CUSTOM_MU_TYPE gpr_mu;
+-typedef GPR_CUSTOM_CV_TYPE gpr_cv;
+-typedef GPR_CUSTOM_ONCE_TYPE gpr_once;
+typedef Genode::Lock gpr_mu;
+typedef pthread_cond_t gpr_cv;
+typedef pthread_once_t gpr_once;
+ 
+ #define GPR_ONCE_INIT GPR_CUSTOM_ONCE_INIT
+ 
+diff --git a/include/grpcpp/impl/codegen/sync.h b/include/grpcpp/impl/codegen/sync.h
+index 146f182..d1a60cb 100644
+--- a/include/grpcpp/impl/codegen/sync.h
+++ b/include/grpcpp/impl/codegen/sync.h
+@@ -26,6 +26,7 @@
+ #endif
+ 
+ #include <mutex>
+#include <base/lock.h>
+ 
+ #include <grpc/impl/codegen/log.h>
+ #include <grpc/impl/codegen/sync.h>
+@@ -58,7 +59,7 @@ class Mutex {
+  private:
+   union {
+     gpr_mu mu_;
+-    std::mutex do_not_use_sth_;
+	Genode::Lock do_not_use_sth_;
+ #ifdef GPR_HAS_PTHREAD_H
+     pthread_mutex_t do_not_use_pth_;
+ #endif
+diff --git a/src/lib/grpc/src/cpp/server/external_connection_acceptor_impl.h b/src/lib/grpc/src/cpp/server/external_connection_acceptor_impl.h
+index b5bd935..e835bbf 100644
+--- a/src/cpp/server/external_connection_acceptor_impl.h
+++ b/src/cpp/server/external_connection_acceptor_impl.h
+@@ -20,7 +20,7 @@
+ #define SRC_CPP_SERVER_EXTERNAL_CONNECTION_ACCEPTOR_IMPL_H_
+ 
+ #include <memory>
+-#include <mutex>
+#include <base/lock.h>
+ 
+ #include <grpc/impl/codegen/grpc_types.h>
+ #include <grpcpp/security/server_credentials.h>
+@@ -60,7 +60,7 @@ class ExternalConnectionAcceptorImpl
+   const grpc::string name_;
+   std::shared_ptr<ServerCredentials> creds_;
+   grpc_core::TcpServerFdHandler* handler_ = nullptr;  // not owned
+-  std::mutex mu_;
+  Genode::Lock mu_;
+   bool has_acceptor_ = false;
+   bool started_ = false;
+   bool shutdown_ = false;
+diff --git a/src/lib/grpc/src/cpp/server/external_connection_acceptor_impl.cc b/src/lib/grpc/src/cpp/server/external_connection_acceptor_impl.cc
+index 7f0e2dc..a788b0d 100644
+--- a/src/cpp/server/external_connection_acceptor_impl.cc
+++ b/src/cpp/server/external_connection_acceptor_impl.cc
+@@ -52,7 +52,7 @@ ExternalConnectionAcceptorImpl::ExternalConnectionAcceptorImpl(
+ 
+ std::unique_ptr<experimental::ExternalConnectionAcceptor>
+ ExternalConnectionAcceptorImpl::GetAcceptor() {
+-  std::lock_guard<std::mutex> lock(mu_);
+  std::lock_guard<Genode::Lock> lock(mu_);
+   GPR_ASSERT(!has_acceptor_);
+   has_acceptor_ = true;
+   return std::unique_ptr<experimental::ExternalConnectionAcceptor>(
+@@ -61,7 +61,7 @@ ExternalConnectionAcceptorImpl::GetAcceptor() {
+ 
+ void ExternalConnectionAcceptorImpl::HandleNewConnection(
+     experimental::ExternalConnectionAcceptor::NewConnectionParameters* p) {
+-  std::lock_guard<std::mutex> lock(mu_);
+  std::lock_guard<Genode::Lock> lock(mu_);
+   if (shutdown_ || !started_) {
+     // TODO(yangg) clean up.
+     gpr_log(
+@@ -76,12 +76,12 @@ void ExternalConnectionAcceptorImpl::HandleNewConnection(
+ }
+ 
+ void ExternalConnectionAcceptorImpl::Shutdown() {
+-  std::lock_guard<std::mutex> lock(mu_);
+  std::lock_guard<Genode::Lock> lock(mu_);
+   shutdown_ = true;
+ }
+ 
+ void ExternalConnectionAcceptorImpl::Start() {
+-  std::lock_guard<std::mutex> lock(mu_);
+  std::lock_guard<Genode::Lock> lock(mu_);
+   GPR_ASSERT(!started_);
+   GPR_ASSERT(has_acceptor_);
+   GPR_ASSERT(!shutdown_);
--- a/src/lib/grpc/patches/02_generated_includes.patch
+++ b/src/lib/grpc/patches/02_generated_includes.patch
@@ -0,0 +1,39 @@
+diff --git a/src/cpp/util/core_stats.h b/src/cpp/util/core_stats.h
+index 6366d7d..0f0e2ee 100644
+--- a/src/cpp/util/core_stats.h
+++ b/src/cpp/util/core_stats.h
+@@ -19,7 +19,7 @@
+ #ifndef GRPC_INTERNAL_CPP_UTIL_CORE_STATS_H
+ #define GRPC_INTERNAL_CPP_UTIL_CORE_STATS_H
+ 
+-#include "src/proto/grpc/core/stats.pb.h"
+#include "stats.pb.h"
+ 
+ #include "src/core/lib/debug/stats.h"
+ 
+diff --git a/src/cpp/util/error_details.cc b/src/cpp/util/error_details.cc
+index a1aafcb..6be9390 100644
+--- a/src/cpp/util/error_details.cc
+++ b/src/cpp/util/error_details.cc
+@@ -18,7 +18,7 @@
+ 
+ #include <grpcpp/support/error_details.h>
+ 
+-#include "src/proto/grpc/status/status.pb.h"
+#include "status.pb.h"
+ 
+ namespace grpc_impl {
+ 
+diff --git a/src/cpp/ext/proto_server_reflection.h b/src/cpp/ext/proto_server_reflection.h
+index bf40c3c180..69f36c3e96 100644
+--- a/src/cpp/ext/proto_server_reflection.h
+++ b/src/cpp/ext/proto_server_reflection.h
+@@ -23,7 +23,7 @@
+ #include <vector>
+ 
+ #include <grpcpp/grpcpp.h>
+-#include "src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h"
+#include "reflection.grpc.pb.h"
+ 
+ namespace grpc {
+ 
--- a/src/lib/grpc/patches/03_if_nametoindex.patch
+++ b/src/lib/grpc/patches/03_if_nametoindex.patch
@@ -0,0 +1,20 @@
+diff --git a/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc b/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc
+index f1ba20dcec..0d94d79246 100644
+--- a/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc
+++ b/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc
+@@ -29,13 +29,8 @@
+ 
+ #include <grpc/support/log.h>
+ 
+-uint32_t grpc_if_nametoindex(char* name) {
+-  uint32_t out = if_nametoindex(name);
+-  if (out == 0) {
+-    gpr_log(GPR_DEBUG, "if_nametoindex failed for name %s. errno %d", name,
+-            errno);
+-  }
+-  return out;
+uint32_t grpc_if_nametoindex(char*) {
+  return 1;
+ }
+ 
+ #endif /* GRPC_IF_NAMETOINDEX == 1 && \
--- a/src/lib/grpc/patches/04_socket_stuff.patch
+++ b/src/lib/grpc/patches/04_socket_stuff.patch
@@ -0,0 +1,152 @@
+diff --git a/src/core/lib/iomgr/socket_utils_common_posix.cc b/src/core/lib/iomgr/socket_utils_common_posix.cc
+index 47d9f51b09..66abe6982a 100644
+--- a/src/core/lib/iomgr/socket_utils_common_posix.cc
+++ b/src/core/lib/iomgr/socket_utils_common_posix.cc
+@@ -70,21 +70,21 @@ grpc_error* grpc_set_socket_nonblocking(int fd, int non_blocking) {
+   return GRPC_ERROR_NONE;
+ }
+ 
+-grpc_error* grpc_set_socket_no_sigpipe_if_possible(int fd) {
+-#ifdef GRPC_HAVE_SO_NOSIGPIPE
+-  int val = 1;
+-  int newval;
+-  socklen_t intlen = sizeof(newval);
+-  if (0 != setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &val, sizeof(val))) {
+-    return GRPC_OS_ERROR(errno, "setsockopt(SO_NOSIGPIPE)");
+-  }
+-  if (0 != getsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &newval, &intlen)) {
+-    return GRPC_OS_ERROR(errno, "getsockopt(SO_NOSIGPIPE)");
+-  }
+-  if ((newval != 0) != (val != 0)) {
+-    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_NOSIGPIPE");
+-  }
+-#endif
+grpc_error* grpc_set_socket_no_sigpipe_if_possible(int /*fd*/) {
+//#ifdef GRPC_HAVE_SO_NOSIGPIPE
+//  int val = 1;
+//  int newval;
+//  socklen_t intlen = sizeof(newval);
+//  if (0 != setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &val, sizeof(val))) {
+//    return GRPC_OS_ERROR(errno, "setsockopt(SO_NOSIGPIPE)");
+//  }
+//  if (0 != getsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &newval, &intlen)) {
+//    return GRPC_OS_ERROR(errno, "getsockopt(SO_NOSIGPIPE)");
+//  }
+//  if ((newval != 0) != (val != 0)) {
+//    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_NOSIGPIPE");
+//  }
+//#endif
+   return GRPC_ERROR_NONE;
+ }
+ 
+@@ -125,22 +125,22 @@ grpc_error* grpc_set_socket_rcvbuf(int fd, int buffer_size_bytes) {
+ }
+ 
+ /* set a socket to close on exec */
+-grpc_error* grpc_set_socket_cloexec(int fd, int close_on_exec) {
+-  int oldflags = fcntl(fd, F_GETFD, 0);
+-  if (oldflags < 0) {
+-    return GRPC_OS_ERROR(errno, "fcntl");
+-  }
+-
+-  if (close_on_exec) {
+-    oldflags |= FD_CLOEXEC;
+-  } else {
+-    oldflags &= ~FD_CLOEXEC;
+-  }
+-
+-  if (fcntl(fd, F_SETFD, oldflags) != 0) {
+-    return GRPC_OS_ERROR(errno, "fcntl");
+-  }
+-
+grpc_error* grpc_set_socket_cloexec(int /*fd*/, int /*close_on_exec*/) {
+//  int oldflags = fcntl(fd, F_GETFD, 0);
+//  if (oldflags < 0) {
+//    return GRPC_OS_ERROR(errno, "fcntl");
+//  }
+//
+//  if (close_on_exec) {
+//    oldflags |= FD_CLOEXEC;
+//  } else {
+//    oldflags &= ~FD_CLOEXEC;
+//  }
+//
+//  if (fcntl(fd, F_SETFD, oldflags) != 0) {
+//    return GRPC_OS_ERROR(errno, "fcntl");
+//  }
+//
+   return GRPC_ERROR_NONE;
+ }
+ 
+@@ -163,24 +163,24 @@ grpc_error* grpc_set_socket_reuse_addr(int fd, int reuse) {
+ }
+ 
+ /* set a socket to reuse old addresses */
+-grpc_error* grpc_set_socket_reuse_port(int fd, int reuse) {
+grpc_error* grpc_set_socket_reuse_port(int /*fd*/, int /*reuse*/) {
+ #ifndef SO_REUSEPORT
+   return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+       "SO_REUSEPORT unavailable on compiling system");
+ #else
+-  int val = (reuse != 0);
+-  int newval;
+-  socklen_t intlen = sizeof(newval);
+-  if (0 != setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val))) {
+-    return GRPC_OS_ERROR(errno, "setsockopt(SO_REUSEPORT)");
+-  }
+-  if (0 != getsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &newval, &intlen)) {
+-    return GRPC_OS_ERROR(errno, "getsockopt(SO_REUSEPORT)");
+-  }
+-  if ((newval != 0) != val) {
+-    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_REUSEPORT");
+-  }
+-
+//  int val = (reuse != 0);
+//  int newval;
+//  socklen_t intlen = sizeof(newval);
+//  if (0 != setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val))) {
+//    return GRPC_OS_ERROR(errno, "setsockopt(SO_REUSEPORT)");
+//  }
+//  if (0 != getsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &newval, &intlen)) {
+//    return GRPC_OS_ERROR(errno, "getsockopt(SO_REUSEPORT)");
+//  }
+//  if ((newval != 0) != val) {
+//    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_REUSEPORT");
+//  }
+//
+   return GRPC_ERROR_NONE;
+ #endif
+ }
+@@ -210,19 +210,19 @@ bool grpc_is_socket_reuse_port_supported() {
+ }
+ 
+ /* disable nagle */
+-grpc_error* grpc_set_socket_low_latency(int fd, int low_latency) {
+-  int val = (low_latency != 0);
+-  int newval;
+-  socklen_t intlen = sizeof(newval);
+-  if (0 != setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val))) {
+-    return GRPC_OS_ERROR(errno, "setsockopt(TCP_NODELAY)");
+-  }
+-  if (0 != getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &newval, &intlen)) {
+-    return GRPC_OS_ERROR(errno, "getsockopt(TCP_NODELAY)");
+-  }
+-  if ((newval != 0) != val) {
+-    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set TCP_NODELAY");
+-  }
+grpc_error* grpc_set_socket_low_latency(int /*fd*/, int /*low_latency*/) {
+//  int val = (low_latency != 0);
+//  int newval;
+//  socklen_t intlen = sizeof(newval);
+//  if (0 != setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val))) {
+//    return GRPC_OS_ERROR(errno, "setsockopt(TCP_NODELAY)");
+//  }
+//  if (0 != getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &newval, &intlen)) {
+//    return GRPC_OS_ERROR(errno, "getsockopt(TCP_NODELAY)");
+//  }
+//  if ((newval != 0) != val) {
+//    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set TCP_NODELAY");
+//  }
+   return GRPC_ERROR_NONE;
+ }
+ 
--- a/src/lib/grpc/patches/05_example.patch
+++ b/src/lib/grpc/patches/05_example.patch
@@ -0,0 +1,26 @@
+diff --git a/examples/cpp/helloworld/greeter_client.cc b/examples/cpp/helloworld/greeter_client.cc
+index 932583c84a..0fa38aac38 100644
+--- a/examples/cpp/helloworld/greeter_client.cc
+++ b/examples/cpp/helloworld/greeter_client.cc
+@@ -77,7 +77,7 @@ int main(int argc, char** argv) {
+   // localhost at port 50051). We indicate that the channel isn't authenticated
+   // (use of InsecureChannelCredentials()).
+   GreeterClient greeter(grpc::CreateChannel(
+-      "localhost:50051", grpc::InsecureChannelCredentials()));
+      "10.10.10.55:50051", grpc::InsecureChannelCredentials()));
+   std::string user("world");
+   std::string reply = greeter.SayHello(user);
+   std::cout << "Greeter received: " << reply << std::endl;
+diff --git a/examples/cpp/helloworld/greeter_server.cc b/examples/cpp/helloworld/greeter_server.cc
+index f36ad906a2..03025b7920 100644
+--- a/examples/cpp/helloworld/greeter_server.cc
+++ b/examples/cpp/helloworld/greeter_server.cc
+@@ -47,7 +47,7 @@ class GreeterServiceImpl final : public Greeter::Service {
+ };
+ 
+ void RunServer() {
+-  std::string server_address("0.0.0.0:50051");
+  std::string server_address("10.10.10.55:50051");
+   GreeterServiceImpl service;
+ 
+   ServerBuilder builder;
--- a/src/lib/grpc/patches/06_if_indextoname.patch
+++ b/src/lib/grpc/patches/06_if_indextoname.patch
@@ -0,0 +1,12 @@
+diff --git a/third_party/genode/if_indextoname.c b/third_party/genode/if_indextoname.c
+new file mode 100644
+index 0000000000..9ea67cee0c
+--- /dev/null
+++ b/third_party/genode/if_indextoname.c
+@@ -0,0 +1,6 @@
+char * if_indextoname(unsigned int ifindex, char *ifname)
+{
+	const char* name = "eth0";
+	ifname = name;
+	return ifname;
+}
--- a/src/lib/grpc/patches/07_send_recv.patch
+++ b/src/lib/grpc/patches/07_send_recv.patch
@@ -0,0 +1,38 @@
+commit e291dab98f94a0d510ec726af85680d018d2aadf
+Author: Pirmin Duss <pirmin.duss@gapfruit.com>
+Date:   Mon Oct 28 10:58:58 2019 +0100
+
+    Fix for missing sendmsg and recvmsg in genode.
+
+diff --git a/src/core/lib/iomgr/tcp_posix.cc b/src/core/lib/iomgr/tcp_posix.cc
+index b6d1381298..f2d3ac5037 100644
+--- a/src/core/lib/iomgr/tcp_posix.cc
+++ b/src/core/lib/iomgr/tcp_posix.cc
+@@ -464,7 +464,12 @@ static void tcp_do_read(grpc_tcp* tcp) {
+     do {
+       GPR_TIMER_SCOPE("recvmsg", 0);
+       GRPC_STATS_INC_SYSCALL_READ();
+-      read_bytes = recvmsg(tcp->fd, &msg, 0);
+                       read_bytes = 0;
+                       for (int i = 0; i < msg.msg_iovlen; i++)
+                       {
+                               auto iov = msg.msg_iov[i];
+                               read_bytes += read(tcp->fd, iov.iov_base, iov.iov_len);
+                       }
+     } while (read_bytes < 0 && errno == EINTR);
+ 
+     /* We have read something in previous reads. We need to deliver those
+@@ -652,7 +657,12 @@ ssize_t tcp_send(int fd, const struct msghdr* msg) {
+   do {
+     /* TODO(klempner): Cork if this is a partial write */
+     GRPC_STATS_INC_SYSCALL_WRITE();
+-    sent_length = sendmsg(fd, msg, SENDMSG_FLAGS);
+               sent_length = 0;
+               for (int i = 0; i < msg->msg_iovlen; i++)
+               {
+                       auto iov = msg->msg_iov[i];
+                       sent_length += write(fd, iov.iov_base, iov.iov_len);
+               }
+   } while (sent_length < 0 && errno == EINTR);
+   return sent_length;
+ }
--- a/src/lib/grpc/patches/08_grpc_accept4.patch
+++ b/src/lib/grpc/patches/08_grpc_accept4.patch
@@ -0,0 +1,13 @@
+--- a/src/core/lib/iomgr/socket_utils_posix.cc
+++ b/src/core/lib/iomgr/socket_utils_posix.cc
+@@ -42,11 +42,6 @@ int grpc_accept4(int sockfd, grpc_resolved_address* resolved_addr, int nonblock,
+       if (flags < 0) goto close_and_error;
+       if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) != 0) goto close_and_error;
+     }
+-    if (cloexec) {
+-      flags = fcntl(fd, F_GETFD, 0);
+-      if (flags < 0) goto close_and_error;
+-      if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) != 0) goto close_and_error;
+-    }
+   }
+   return fd;
--- a/src/lib/protobuf/files.list
+++ b/src/lib/protobuf/files.list
@@ -0,0 +1,223 @@
+protobuf-x.x.x/LICENSE
+protobuf-x.x.x/src/google/protobuf/generated_message_util.cc
+protobuf-x.x.x/src/google/protobuf/empty.proto
+protobuf-x.x.x/src/google/protobuf/struct.proto
+protobuf-x.x.x/src/google/protobuf/duration.pb.cc
+protobuf-x.x.x/src/google/protobuf/repeated_field.cc
+protobuf-x.x.x/src/google/protobuf/generated_message_reflection.cc
+protobuf-x.x.x/src/google/protobuf/descriptor.h
+protobuf-x.x.x/src/google/protobuf/reflection.h
+protobuf-x.x.x/src/google/protobuf/wire_format_lite.h
+protobuf-x.x.x/src/google/protobuf/api.pb.cc
+protobuf-x.x.x/src/google/protobuf/map_type_handler.h
+protobuf-x.x.x/src/google/protobuf/wire_format_lite.cc
+protobuf-x.x.x/src/google/protobuf/timestamp.proto
+protobuf-x.x.x/src/google/protobuf/empty.pb.h
+protobuf-x.x.x/src/google/protobuf/type.pb.cc
+protobuf-x.x.x/src/google/protobuf/package_info.h
+protobuf-x.x.x/src/google/protobuf/port.h
+protobuf-x.x.x/src/google/protobuf/descriptor.cc
+protobuf-x.x.x/src/google/protobuf/any.pb.h
+protobuf-x.x.x/src/google/protobuf/implicit_weak_message.h
+protobuf-x.x.x/src/google/protobuf/field_mask.pb.h
+protobuf-x.x.x/src/google/protobuf/generated_message_table_driven.cc
+protobuf-x.x.x/src/google/protobuf/stubs/callback.h
+protobuf-x.x.x/src/google/protobuf/stubs/stringprintf.h
+protobuf-x.x.x/src/google/protobuf/stubs/port.h
+protobuf-x.x.x/src/google/protobuf/stubs/status.h
+protobuf-x.x.x/src/google/protobuf/stubs/bytestream.h
+protobuf-x.x.x/src/google/protobuf/stubs/stringpiece.h
+protobuf-x.x.x/src/google/protobuf/stubs/stringprintf.cc
+protobuf-x.x.x/src/google/protobuf/stubs/status.cc
+protobuf-x.x.x/src/google/protobuf/stubs/common.h
+protobuf-x.x.x/src/google/protobuf/stubs/platform_macros.h
+protobuf-x.x.x/src/google/protobuf/stubs/once.h
+protobuf-x.x.x/src/google/protobuf/stubs/macros.h
+protobuf-x.x.x/src/google/protobuf/stubs/time.cc
+protobuf-x.x.x/src/google/protobuf/stubs/status_macros.h
+protobuf-x.x.x/src/google/protobuf/stubs/map_util.h
+protobuf-x.x.x/src/google/protobuf/stubs/statusor.cc
+protobuf-x.x.x/src/google/protobuf/stubs/casts.h
+protobuf-x.x.x/src/google/protobuf/stubs/logging.h
+protobuf-x.x.x/src/google/protobuf/stubs/mathutil.h
+protobuf-x.x.x/src/google/protobuf/stubs/stringpiece.cc
+protobuf-x.x.x/src/google/protobuf/stubs/common.cc
+protobuf-x.x.x/src/google/protobuf/stubs/statusor.h
+protobuf-x.x.x/src/google/protobuf/stubs/time.h
+protobuf-x.x.x/src/google/protobuf/stubs/substitute.h
+protobuf-x.x.x/src/google/protobuf/stubs/mathlimits.cc
+protobuf-x.x.x/src/google/protobuf/stubs/structurally_valid.cc
+protobuf-x.x.x/src/google/protobuf/stubs/strutil.h
+protobuf-x.x.x/src/google/protobuf/stubs/template_util.h
+protobuf-x.x.x/src/google/protobuf/stubs/bytestream.cc
+protobuf-x.x.x/src/google/protobuf/stubs/int128.cc
+protobuf-x.x.x/src/google/protobuf/stubs/substitute.cc
+protobuf-x.x.x/src/google/protobuf/stubs/int128.h
+protobuf-x.x.x/src/google/protobuf/stubs/strutil.cc
+protobuf-x.x.x/src/google/protobuf/stubs/mathlimits.h
+protobuf-x.x.x/src/google/protobuf/stubs/hash.h
+protobuf-x.x.x/src/google/protobuf/stubs/stl_util.h
+protobuf-x.x.x/src/google/protobuf/stubs/mutex.h
+protobuf-x.x.x/src/google/protobuf/stubs/fastmem.h
+protobuf-x.x.x/src/google/protobuf/timestamp.pb.cc
+protobuf-x.x.x/src/google/protobuf/generated_message_table_driven_lite.h
+protobuf-x.x.x/src/google/protobuf/inlined_string_field.h
+protobuf-x.x.x/src/google/protobuf/descriptor.proto
+protobuf-x.x.x/src/google/protobuf/source_context.pb.h
+protobuf-x.x.x/src/google/protobuf/type.proto
+protobuf-x.x.x/src/google/protobuf/message.cc
+protobuf-x.x.x/src/google/protobuf/descriptor.pb.cc
+protobuf-x.x.x/src/google/protobuf/any_lite.cc
+protobuf-x.x.x/src/google/protobuf/parse_context.cc
+protobuf-x.x.x/src/google/protobuf/has_bits.h
+protobuf-x.x.x/src/google/protobuf/any.cc
+protobuf-x.x.x/src/google/protobuf/map_field.h
+protobuf-x.x.x/src/google/protobuf/implicit_weak_message.cc
+protobuf-x.x.x/src/google/protobuf/map_entry.h
+protobuf-x.x.x/src/google/protobuf/any.h
+protobuf-x.x.x/src/google/protobuf/map.h
+protobuf-x.x.x/src/google/protobuf/parse_context.h
+protobuf-x.x.x/src/google/protobuf/generated_message_reflection.h
+protobuf-x.x.x/src/google/protobuf/port_undef.inc
+protobuf-x.x.x/src/google/protobuf/any.pb.cc
+protobuf-x.x.x/src/google/protobuf/source_context.pb.cc
+protobuf-x.x.x/src/google/protobuf/api.pb.h
+protobuf-x.x.x/src/google/protobuf/type.pb.h
+protobuf-x.x.x/src/google/protobuf/generated_enum_reflection.h
+protobuf-x.x.x/src/google/protobuf/wrappers.pb.cc
+protobuf-x.x.x/src/google/protobuf/timestamp.pb.h
+protobuf-x.x.x/src/google/protobuf/wrappers.pb.h
+protobuf-x.x.x/src/google/protobuf/arena.cc
+protobuf-x.x.x/src/google/protobuf/reflection_internal.h
+protobuf-x.x.x/src/google/protobuf/struct.pb.cc
+protobuf-x.x.x/src/google/protobuf/struct.pb.h
+protobuf-x.x.x/src/google/protobuf/message_lite.h
+protobuf-x.x.x/src/google/protobuf/arena_impl.h
+protobuf-x.x.x/src/google/protobuf/map_field.cc
+protobuf-x.x.x/src/google/protobuf/extension_set_inl.h
+protobuf-x.x.x/src/google/protobuf/any.proto
+protobuf-x.x.x/src/google/protobuf/metadata_lite.h
+protobuf-x.x.x/src/google/protobuf/metadata.h
+protobuf-x.x.x/src/google/protobuf/wrappers.proto
+protobuf-x.x.x/src/google/protobuf/map_entry_lite.h
+protobuf-x.x.x/src/google/protobuf/reflection_ops.cc
+protobuf-x.x.x/src/google/protobuf/message.h
+protobuf-x.x.x/src/google/protobuf/text_format.h
+protobuf-x.x.x/src/google/protobuf/map_field_inl.h
+protobuf-x.x.x/src/google/protobuf/text_format.cc
+protobuf-x.x.x/src/google/protobuf/wire_format.cc
+protobuf-x.x.x/src/google/protobuf/descriptor_database.cc
+protobuf-x.x.x/src/google/protobuf/duration.pb.h
+protobuf-x.x.x/src/google/protobuf/message_lite.cc
+protobuf-x.x.x/src/google/protobuf/unknown_field_set.h
+protobuf-x.x.x/src/google/protobuf/duration.proto
+protobuf-x.x.x/src/google/protobuf/service.h
+protobuf-x.x.x/src/google/protobuf/arena.h
+protobuf-x.x.x/src/google/protobuf/util/type_resolver_util.cc
+protobuf-x.x.x/src/google/protobuf/util/time_util.h
+protobuf-x.x.x/src/google/protobuf/util/field_mask_util.h
+protobuf-x.x.x/src/google/protobuf/util/field_mask_util.cc
+protobuf-x.x.x/src/google/protobuf/util/time_util.cc
+protobuf-x.x.x/src/google/protobuf/util/package_info.h
+protobuf-x.x.x/src/google/protobuf/util/json_util.cc
+protobuf-x.x.x/src/google/protobuf/util/json_util.h
+protobuf-x.x.x/src/google/protobuf/util/type_resolver_util.h
+protobuf-x.x.x/src/google/protobuf/util/field_comparator.cc
+protobuf-x.x.x/src/google/protobuf/util/field_comparator.h
+protobuf-x.x.x/src/google/protobuf/util/json_format.proto
+protobuf-x.x.x/src/google/protobuf/util/json_format_proto3.proto
+protobuf-x.x.x/src/google/protobuf/util/type_resolver.h
+protobuf-x.x.x/src/google/protobuf/util/message_differencer.cc
+protobuf-x.x.x/src/google/protobuf/util/delimited_message_util.cc
+protobuf-x.x.x/src/google/protobuf/util/message_differencer.h
+protobuf-x.x.x/src/google/protobuf/util/delimited_message_util.h
+protobuf-x.x.x/src/google/protobuf/util/internal/json_escaping.h
+protobuf-x.x.x/src/google/protobuf/util/internal/error_listener.h
+protobuf-x.x.x/src/google/protobuf/util/internal/json_objectwriter.h
+protobuf-x.x.x/src/google/protobuf/util/internal/proto_writer.h
+protobuf-x.x.x/src/google/protobuf/util/internal/location_tracker.h
+protobuf-x.x.x/src/google/protobuf/util/internal/mock_error_listener.h
+protobuf-x.x.x/src/google/protobuf/util/internal/type_info.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/structured_objectwriter.h
+protobuf-x.x.x/src/google/protobuf/util/internal/json_escaping.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/error_listener.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/datapiece.h
+protobuf-x.x.x/src/google/protobuf/util/internal/type_info.h
+protobuf-x.x.x/src/google/protobuf/util/internal/field_mask_utility.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/proto_writer.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/default_value_objectwriter.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/protostream_objectwriter.h
+protobuf-x.x.x/src/google/protobuf/util/internal/object_writer.h
+protobuf-x.x.x/src/google/protobuf/util/internal/expecting_objectwriter.h
+protobuf-x.x.x/src/google/protobuf/util/internal/protostream_objectsource.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/protostream_objectsource.h
+protobuf-x.x.x/src/google/protobuf/util/internal/protostream_objectwriter.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/utility.h
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+protobuf-x.x.x/src/google/protobuf/util/internal/default_value_objectwriter.h
+protobuf-x.x.x/src/google/protobuf/util/internal/constants.h
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+protobuf-x.x.x/src/google/protobuf/util/internal/object_location_tracker.h
+protobuf-x.x.x/src/google/protobuf/util/internal/json_stream_parser.h
+protobuf-x.x.x/src/google/protobuf/util/internal/json_stream_parser.cc
+protobuf-x.x.x/src/google/protobuf/util/internal/utility.cc
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+protobuf-x.x.x/src/google/protobuf/wire_format.h
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+protobuf-x.x.x/src/google/protobuf/empty.pb.cc
+protobuf-x.x.x/src/google/protobuf/reflection_ops.h
+protobuf-x.x.x/src/google/protobuf/extension_set.h
+protobuf-x.x.x/src/google/protobuf/source_context.proto
+protobuf-x.x.x/src/google/protobuf/descriptor_database.h
+protobuf-x.x.x/src/google/protobuf/field_mask.pb.cc
+protobuf-x.x.x/src/google/protobuf/generated_message_table_driven.h
+protobuf-x.x.x/src/google/protobuf/generated_enum_util.cc
+protobuf-x.x.x/src/google/protobuf/port_def.inc
+protobuf-x.x.x/src/google/protobuf/extension_set_heavy.cc
+protobuf-x.x.x/src/google/protobuf/repeated_field.h
+protobuf-x.x.x/src/google/protobuf/io/gzip_stream.h
+protobuf-x.x.x/src/google/protobuf/io/printer.cc
+protobuf-x.x.x/src/google/protobuf/io/package_info.h
+protobuf-x.x.x/src/google/protobuf/io/zero_copy_stream_impl.h
+protobuf-x.x.x/src/google/protobuf/io/printer.h
+protobuf-x.x.x/src/google/protobuf/io/zero_copy_stream.cc
+protobuf-x.x.x/src/google/protobuf/io/io_win32.cc
+protobuf-x.x.x/src/google/protobuf/io/zero_copy_stream.h
+protobuf-x.x.x/src/google/protobuf/io/zero_copy_stream_impl_lite.h
+protobuf-x.x.x/src/google/protobuf/io/strtod.cc
+protobuf-x.x.x/src/google/protobuf/io/strtod.h
+protobuf-x.x.x/src/google/protobuf/io/zero_copy_stream_impl.cc
+protobuf-x.x.x/src/google/protobuf/io/coded_stream.cc
+protobuf-x.x.x/src/google/protobuf/io/io_win32.h
+protobuf-x.x.x/src/google/protobuf/io/coded_stream.h
+protobuf-x.x.x/src/google/protobuf/io/tokenizer.cc
+protobuf-x.x.x/src/google/protobuf/io/zero_copy_stream_impl_lite.cc
+protobuf-x.x.x/src/google/protobuf/io/gzip_stream.cc
+protobuf-x.x.x/src/google/protobuf/io/coded_stream_inl.h
+protobuf-x.x.x/src/google/protobuf/io/tokenizer.h
+protobuf-x.x.x/src/google/protobuf/map_field_lite.h
+protobuf-x.x.x/src/google/protobuf/field_mask.proto
+protobuf-x.x.x/src/google/protobuf/descriptor.pb.h
+protobuf-x.x.x/src/google/protobuf/generated_message_util.h
+protobuf-x.x.x/src/google/protobuf/generated_enum_util.h
+protobuf-x.x.x/src/google/protobuf/service.cc
+protobuf-x.x.x/src/google/protobuf/unknown_field_set.cc
+protobuf-x.x.x/src/google/protobuf/api.proto
+protobuf-x.x.x/src/google/protobuf/dynamic_message.cc
+protobuf-x.x.x/src/google/protobuf/extension_set.cc
+protobuf-x.x.x/src/google/protobuf/arenastring.h
+protobuf-x.x.x/src/google/protobuf/dynamic_message.h
+protobuf-x.x.x/examples/list_people.py
+protobuf-x.x.x/examples/add_person.go
+protobuf-x.x.x/examples/add_person.cc
+protobuf-x.x.x/examples/ListPeople.java
+protobuf-x.x.x/examples/addressbook.proto
+protobuf-x.x.x/examples/BUILD
+protobuf-x.x.x/examples/add_person.py
+protobuf-x.x.x/examples/AddPerson.java
+protobuf-x.x.x/examples/list_people.go
+protobuf-x.x.x/examples/README.md
+protobuf-x.x.x/examples/add_person.dart
+protobuf-x.x.x/examples/list_people.cc
--- a/src/lib/protobuf/patches/01-mutex.patch
+++ b/src/lib/protobuf/patches/01-mutex.patch
@@ -0,0 +1,28 @@
+commit 3a55e1d3c8ab37fb14a9a2875db0e031044d4863
+Author: Pirmin Duss <pirmin.duss@gapfruit.com>
+Date:   Mon Sep 23 16:16:57 2019 +0200
+
+    Mutex fixes
+
+diff --git a/src/google/protobuf/stubs/mutex.h b/src/google/protobuf/stubs/mutex.h
+index a311889..967be6a 100644
+--- a/src/google/protobuf/stubs/mutex.h
+++ b/src/google/protobuf/stubs/mutex.h
+@@ -30,7 +30,7 @@
+ #ifndef GOOGLE_PROTOBUF_STUBS_MUTEX_H_
+ #define GOOGLE_PROTOBUF_STUBS_MUTEX_H_
+ 
+-#include <mutex>
+#include <base/lock.h>
+ 
+ #ifdef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
+ 
+@@ -104,7 +104,7 @@ class PROTOBUF_EXPORT GOOGLE_PROTOBUF_CAPABILITY("mutex") WrappedMutex {
+ 
+  private:
+ #ifndef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
+-  std::mutex mu_;
+  Genode::Lock mu_;
+ #else  // ifndef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
+   CriticalSectionLock mu_;
+ #endif  // #ifndef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
--- a/src/lib/protobuf/patches/02-run_once.patch
+++ b/src/lib/protobuf/patches/02-run_once.patch
@@ -0,0 +1,34 @@
+commit 420f5bb78bfd61825ad5d3bc52a27469f298d17b
+Author: Pirmin Duss <pirmin.duss@gapfruit.com>
+Date:   Mon Sep 23 16:33:08 2019 +0200
+
+    run_once fix
+
+diff --git a/src/google/protobuf/stubs/once.h b/src/google/protobuf/stubs/once.h
+index 070d36d..3602ee7 100644
+--- a/src/google/protobuf/stubs/once.h
+++ b/src/google/protobuf/stubs/once.h
+@@ -31,19 +31,16 @@
+ #ifndef GOOGLE_PROTOBUF_STUBS_ONCE_H__
+ #define GOOGLE_PROTOBUF_STUBS_ONCE_H__
+ 
+-#include <mutex>
+-#include <utility>
+-
+ #include <google/protobuf/port_def.inc>
+ 
+ namespace google {
+ namespace protobuf {
+ namespace internal {
+ 
+-using once_flag = std::once_flag;
+-template <typename... Args>
+-void call_once(Args&&... args ) {
+-  std::call_once(std::forward<Args>(args)...);
+using once_flag = int;
+template <typename FN, typename... Args>
+void call_once(once_flag, FN fn, Args&&... args ) {
+  fn(std::forward<Args>(args)...);
+ }
+ 
+ }  // namespace internal
--- a/src/lib/protobuf/patches/03-thread.patch
+++ b/src/lib/protobuf/patches/03-thread.patch
@@ -0,0 +1,45 @@
+diff --git a/src/google/protobuf/generated_message_util.cc b/src/google/protobuf/generated_message_util.cc
+index 36d7307..04a565b 100644
+--- a/src/google/protobuf/generated_message_util.cc
+++ b/src/google/protobuf/generated_message_util.cc
+@@ -799,8 +799,8 @@ void InitSCCImpl(SCCInfoBase* scc) {
+   // Either the default in case no initialization is running or the id of the
+   // thread that is currently initializing.
+ #ifndef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
+-  static std::atomic<std::thread::id> runner;
+-  auto me = std::this_thread::get_id();
+  static std::atomic<long long> runner = -1LL;
+  auto me = 1LL;
+ #else
+   // This is a lightweight replacement for std::thread::id. std::thread does not
+   // work on Windows XP SP2 with the latest VC++ libraries, because it utilizes
+@@ -811,20 +811,20 @@ void InitSCCImpl(SCCInfoBase* scc) {
+ 
+   // This will only happen because the constructor will call InitSCC while
+   // constructing the default instance.
+-  if (runner.load(std::memory_order_relaxed) == me) {
+-    // Because we're in the process of constructing the default instance.
+-    // We can be assured that we're already exploring this SCC.
+-    GOOGLE_CHECK_EQ(scc->visit_status.load(std::memory_order_relaxed),
+-             SCCInfoBase::kRunning);
+-    return;
+-  }
+  if (runner.load(std::memory_order_relaxed) == me) {
+    // Because we're in the process of constructing the default instance.
+    // We can be assured that we're already exploring this SCC.
+    GOOGLE_CHECK_EQ(scc->visit_status.load(std::memory_order_relaxed),
+             SCCInfoBase::kRunning);
+    return;
+  }
+   InitProtobufDefaults();
+   mu.Lock();
+-  runner.store(me, std::memory_order_relaxed);
+  runner.store(me, std::memory_order_relaxed);
+   InitSCC_DFS(scc);
+ 
+ #ifndef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
+-  runner.store(std::thread::id{}, std::memory_order_relaxed);
+  runner.store(0, std::memory_order_relaxed);
+ #else
+   runner.store(-1, std::memory_order_relaxed);
+ #endif  // #ifndef GOOGLE_PROTOBUF_SUPPORT_WINDOWS_XP
--- a/src/test/grpc/client/target.mk
+++ b/src/test/grpc/client/target.mk
@@ -0,0 +1,34 @@
+GRPC_DIR           := $(call select_from_ports,protobuf_grpc)/src/lib/grpc
+PROTO_DIR          := $(GRPC_DIR)/examples/protos
+TARGET             := grpc_client
+
+LIBS               := posix
+LIBS               += protobuf
+LIBS               += stdcxx
+LIBS               += grpc
+LIBS               += libc_pipe
+
+CC_CXX_WARN_STRICT :=
+
+PROTOC             := /usr/local/genode/protobuf_grpc/current/bin/protoc
+GRPC_PLUGIN        := /usr/local/genode/protobuf_grpc/current/bin/grpc_cpp_plugin
+
+SRC_CC             := greeter_client.cc
+SRC_CC             += helloworld.pb.cc
+SRC_CC             += helloworld.grpc.pb.cc
+
+vpath greeter_client.cc  $(GRPC_DIR)/examples/cpp/helloworld
+vpath helloworld.proto   $(PROTO_DIR)
+
+$(SRC_CC): helloworld.grpc.pb.h
+
+helloworld.pb.h: helloworld.proto
+	$(VERBOSE)$(PROTOC) --proto_path=$(PROTO_DIR) \
+	                    --cpp_out=. \
+	                    $<
+
+helloworld.grpc.pb.h: helloworld.proto helloworld.pb.h
+	$(VERBOSE)$(PROTOC) --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
+	                    --proto_path=$(PROTO_DIR) \
+	                    --grpc_out=. \
+	                    $<
--- a/src/test/grpc/server/greeter_server.cc
+++ b/src/test/grpc/server/greeter_server.cc
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <iostream>
+#include <memory>
+#include <string>
+
+#include <grpcpp/grpcpp.h>
+
+#ifdef BAZEL_BUILD
+#include "examples/protos/helloworld.grpc.pb.h"
+#else
+#include "helloworld.grpc.pb.h"
+#endif
+
+#include "greeter_server.h"
+
+using grpc::Server;
+using grpc::ServerBuilder;
+using grpc::ServerContext;
+using grpc::Status;
+using helloworld::HelloRequest;
+using helloworld::HelloReply;
+using helloworld::Greeter;
+
+// Logic and data behind the server's behavior.
+class GreeterServiceImpl final : public Greeter::Service {
+  Status SayHello(ServerContext* context, const HelloRequest* request,
+                  HelloReply* reply) override {
+		printf("say hello\n");
+    std::string prefix("Hello ");
+    reply->set_message(prefix + request->name());
+    return Status::OK;
+  }
+};
+
+void RunServer() {
+  std::string server_address("10.10.10.55:50051");
+  GreeterServiceImpl service;
+
+  ServerBuilder builder;
+  // Listen on the given address without any authentication mechanism.
+  builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
+  // Register "service" as the instance through which we'll communicate with
+  // clients. In this case it corresponds to an *synchronous* service.
+  builder.RegisterService(&service);
+  // Finally assemble the server.
+  std::unique_ptr<Server> server(builder.BuildAndStart());
+  std::cout << "Server listening on " << server_address << std::endl;
+
+  // Wait for the server to shutdown. Note that some other thread must be
+  // responsible for shutting down the server for this call to ever return.
+  server->Wait();
+}
+
--- a/src/test/grpc/server/greeter_server.h
+++ b/src/test/grpc/server/greeter_server.h
@@ -0,0 +1,4 @@
+#pragma once
+
+void RunServer();
+
--- a/src/test/grpc/server/main.cc
+++ b/src/test/grpc/server/main.cc
@@ -0,0 +1,50 @@
+#include <base/attached_rom_dataspace.h>
+#include <libc/component.h>
+#include <base/heap.h>
+#include <base/log.h>
+#include <base/thread.h>
+#include "greeter_server.h"
+
+enum { STACK_SIZE = 0xF000 };
+
+namespace Grpc_server {
+	using namespace Genode;
+
+	class Runner;
+	class Server_main;
+}
+
+class Grpc_server::Runner : public Thread
+{
+	public:
+		Runner(Env& env)
+			: Thread(env, "runner", STACK_SIZE)
+		{
+		}
+
+		void entry() override
+		{
+			Libc::with_libc([] () {
+				RunServer();
+			});
+		}
+};
+
+class Grpc_server::Server_main
+{
+	private:
+		Env& _env;
+		Runner _runner { _env };
+
+	public:
+		Server_main(Env& env)
+			: _env(env)
+		{
+			_runner.start();
+		}
+};
+
+void Libc::Component::construct(Libc::Env &env)
+{
+	static Grpc_server::Server_main main(env);
+}
--- a/src/test/grpc/server/target.mk
+++ b/src/test/grpc/server/target.mk
@@ -0,0 +1,35 @@
+GRPC_DIR           := $(call select_from_ports,protobuf_grpc)/src/lib/grpc
+PROTO_DIR          := $(GRPC_DIR)/examples/protos
+TARGET             := grpc_server
+
+LIBS               += protobuf
+LIBS               += stdcxx
+LIBS               += grpc
+LIBS               += libc_pipe
+LIBS               += vfs
+LIBS               += vfs_lwip
+
+CC_CXX_WARN_STRICT :=
+
+PROTOC             := /usr/local/genode/protobuf_grpc/current/bin/protoc
+GRPC_PLUGIN        := /usr/local/genode/protobuf_grpc/current/bin/grpc_cpp_plugin
+
+SRC_CC             := main.cc
+SRC_CC             += greeter_server.cc
+SRC_CC             += helloworld.pb.cc
+SRC_CC             += helloworld.grpc.pb.cc
+
+vpath helloworld.proto   $(PROTO_DIR)
+
+$(SRC_CC): helloworld.grpc.pb.h
+
+helloworld.pb.h: helloworld.proto
+	$(VERBOSE)$(PROTOC) --proto_path=$(PROTO_DIR) \
+	                    --cpp_out=. \
+	                    $<
+
+helloworld.grpc.pb.h: helloworld.proto helloworld.pb.h
+	$(VERBOSE)$(PROTOC) --plugin=protoc-gen-grpc=$(GRPC_PLUGIN) \
+	                    --proto_path=$(PROTO_DIR) \
+	                    --grpc_out=. \
+	                    $<
--- a/src/test/protobuf/add_person/target.mk
+++ b/src/test/protobuf/add_person/target.mk
@@ -0,0 +1,23 @@
+PROTOBUF_DIR := $(call select_from_ports,protobuf_grpc)/src/lib/grpc/third_party/protobuf
+
+TARGET       := add_person
+
+LIBS         := posix protobuf stdcxx
+
+SRC_CC       += add_person.cc \
+                addressbook.pb.cc
+
+PROTOC       := /usr/local/genode/protobuf_grpc/current/bin/protoc
+
+CC_CXX_WARN_STRICT =
+
+vpath add_person.cc      $(PROTOBUF_DIR)/examples
+vpath addressbook.proto  $(PROTOBUF_DIR)/examples
+
+$(SRC_CC): addressbook.pb.h
+
+addressbook.pb.h: addressbook.proto
+	$(VERBOSE)$(PROTOC) --proto_path=$(PROTOBUF_DIR)/examples \
+	                    --proto_path=$(PROTO_FILES_DIR) \
+	                    --cpp_out=$(shell pwd) \
+	                    $<
--- a/src/test/protobuf/list_people/target.mk
+++ b/src/test/protobuf/list_people/target.mk
@@ -0,0 +1,23 @@
+PROTOBUF_DIR := $(call select_from_ports,protobuf_grpc)/src/lib/grpc/third_party/protobuf
+
+TARGET       := list_people
+
+LIBS         := posix protobuf stdcxx
+
+SRC_CC       += list_people.cc \
+                addressbook.pb.cc
+
+PROTOC       := /usr/local/genode/protobuf_grpc/current/bin/protoc
+
+CC_CXX_WARN_STRICT =
+
+vpath list_people.cc     $(PROTOBUF_DIR)/examples
+vpath addressbook.proto  $(PROTOBUF_DIR)/examples
+
+$(SRC_CC): addressbook.pb.h
+
+addressbook.pb.h: addressbook.proto
+	$(VERBOSE)$(PROTOC) --proto_path=$(PROTOBUF_DIR)/examples \
+	                    --proto_path=$(PROTO_FILES_DIR) \
+	                    --cpp_out=$(shell pwd) \
+	                    $<