make example/echo_c++/CMakeLists.txt compiled alone

CMakeLists.txt

@@ -283,8 +283,6 @@ set(SOURCES
     ${PROTO_SRCS}
     )
 
-message("SOURCES=${SOURCES}")
-
 add_subdirectory(src)
 if(BUILD_EXAMPLE)
     add_subdirectory(example)

example/echo_c++/CMakeLists.txt

+cmake_minimum_required(VERSION 2.8.10)
+project(echo_c++ C CXX)
+
+# if you want to specify the path of brpc header and lib,
+# set the following two variables.
+#set(CMAKE_INCLUDE_PATH /home/zjs/gitrepo/brpc/build)
+#set(CMAKE_LIBRARY_PATH /home/zjs/gitrepo/brpc/build/lib)
+
+option(EXAMPLE_LINK_SO "Whether examples are linked dynamically" OFF)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FindThreads)
+include(FindProtobuf)
 protobuf_generate_cpp(PROTO_SRC PROTO_HEADER echo.proto)
 get_filename_component(HEADER_DIR ${PROTO_HEADER} DIRECTORY)
 include_directories(${HEADER_DIR})
 
-set(CMAKE_CPP_FLAGS "-DBRPC_WITH_GLOG=${WITH_GLOG_VAL} -DGFLAGS_NS=${GFLAGS_NS}")
+find_path(BRPC_HEADER NAMES brpc/server.h)
+if(EXAMPLE_LINK_SO)
+    find_library(BRPC_LIB NAMES brpc)
+else()
+    find_library(BRPC_LIB NAMES libbrpc_static.a brpc)
+endif()
+include_directories(${BRPC_HEADER})
+message("BRPC_HEADER=${BRPC_HEADER}")
+message("BRPC_LIB=${BRPC_LIB}")
+
+find_path(GFLAGS_INCLUDE_PATH gflags/gflags.h)
+find_library(GFLAGS_LIBRARY NAMES gflags libgflags)
+include_directories(${GFLAGS_INCLUDE_PATH})
+
+execute_process(
+    COMMAND bash -c "grep \"namespace [_A-Za-z0-9]\\+ {\" ${GFLAGS_INCLUDE_PATH}/gflags/gflags_declare.h | head -1 | awk '{print $2}' | tr -d '\n'"
+    OUTPUT_VARIABLE GFLAGS_NS
+)
+if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
+    execute_process(
+        COMMAND bash -c "grep \"#define GFLAGS_NAMESPACE [_A-Za-z0-9]\\+\" ${GFLAGS_INCLUDE_PATH}/gflags/gflags_declare.h | head -1 | awk '{print $3}' | tr -d '\n'"
+        OUTPUT_VARIABLE GFLAGS_NS
+    )
+endif()
+set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
+find_path(LEVELDB_HEADER NAMES leveldb/db.h)
+find_library(LEVELDB_LIB NAMES leveldb)
+include_directories(${LEVELDB_HEADER})
+
 add_executable(echo_client client.cpp ${PROTO_SRC} ${PROTO_HEADER})
 add_executable(echo_server server.cpp ${PROTO_SRC} ${PROTO_HEADER})
 
+set(DYNAMIC_LIB
+    ${CMAKE_THREAD_LIBS_INIT}
+    ${GFLAGS_LIBRARY}
+    ${PROTOBUF_LIBRARIES}
+    ${LEVELDB_LIB}
+    ssl
+    crypto
+    dl
+    )
+
 if(EXAMPLE_LINK_SO)
-    target_link_libraries(echo_client brpc)
-    target_link_libraries(echo_server brpc)
+    target_link_libraries(echo_client ${BRPC_LIB} ${DYNAMIC_LIB})
+    target_link_libraries(echo_server ${BRPC_LIB} ${DYNAMIC_LIB})
 else()
-    target_link_libraries(echo_client brpc_static ${DYNAMIC_LIB})
-    target_link_libraries(echo_server brpc_static ${DYNAMIC_LIB})
+    target_link_libraries(echo_client ${BRPC_LIB} ${DYNAMIC_LIB})
+    target_link_libraries(echo_server ${BRPC_LIB} ${DYNAMIC_LIB})
 endif()