From:bitcoffee<854182924@qq.com>
Reason:add-secure-compile-option-in-Makefile
base on author:zhuchunyi   commit:b00721fa 
diff -urN grpc/CMakeLists.txt grpc_new/CMakeLists.txt
--- grpc/CMakeLists.txt	2020-08-24 09:14:14.361862041 +0800
+++ grpc_new/CMakeLists.txt	2020-08-27 15:36:51.498277936 +0800
@@ -225,6 +226,9 @@
 endif()
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_gRPC_C_CXX_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_gRPC_C_CXX_FLAGS}")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,-z,relro -Wl,-z,now -fPIE -fPIC -fstack-protector-strong -Wp,-D_FORTIFY_SOURCE=2 -O2")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-z,relro -Wl,-z,now -fPIE -fPIC -fstack-protector-strong -Wp,-D_FORTIFY_SOURCE=2 -O2")
+set(_gRPC_ALLTARGETS_LIBRARYIES "${_gRPC_ALLTARGETS_LIBRARYIES} -Wl,-z,relro -Wl,-z,now -pie") 
 
 if(gRPC_USE_PROTO_LITE)
   set(_gRPC_PROTOBUF_LIBRARY_NAME "libprotobuf-lite")

diff --git a/Makefile b/Makefile
index 6ede6e34d2..d6190ecde4 100644
--- a/Makefile
+++ b/Makefile
@@ -478,6 +478,10 @@ LDFLAGS += $(EXTRA_LDFLAGS)
 DEFINES += $(EXTRA_DEFINES)
 LDLIBS += $(EXTRA_LDLIBS)

+CFLAGS += -Wl,-z,relro -Wl,-z,now -fPIE -fPIC -fstack-protector-strong -Wp,-D_FORTIFY_SOURCE=2 -O2
+CPPFLAGS += -Wl,-z,relro -Wl,-z,now -fPIE -fPIC -fstack-protector-strong -Wp,-D_FORTIFY_SOURCE=2 -O2
+LDFLAGS += -Wl,-z,relro -Wl,-z,now -pie
+
 HOST_CPPFLAGS += $(CPPFLAGS)
 HOST_CFLAGS += $(CFLAGS)
 HOST_CXXFLAGS += $(CXXFLAGS)