我编写简单的Protobuf-C lib。将其编译为lib时我有以下错误:
Scanning dependencies of target ArgentumTracer-native
[ 16%] Building C object CMakeFiles/ArgentumTracer-native.dir/src/sources/http_sender.c.o
/Users/rmuhamedgaliev/Projects/ArgentumTracer-native/src/sources/http_sender.c:36:33: warning: incompatible pointer types passing 'in_addr_t *' (aka 'unsigned int *') to parameter of type 'struct in_addr *' [-Wincompatible-pointer-types]
if ( inet_aton(SERVER_ADDR, &dest.sin_addr.s_addr) == 0 )
^~~~~~~~~~~~~~~~~~~~~
/usr/include/arpa/inet.h:83:47: note: passing argument to parameter here
int inet_aton(const char *, struct in_addr *);
^
1 warning generated.
[ 33%] Building C object CMakeFiles/ArgentumTracer-native.dir/src/sources/main_agent.c.o
[ 50%] Building C object CMakeFiles/ArgentumTracer-native.dir/src/sources/VMInfo.pb-c.c.o
Linking C executable ArgentumTracer-native
[ 50%] Built target ArgentumTracer-native
Scanning dependencies of target argentumtracer
[ 66%] Building C object CMakeFiles/argentumtracer.dir/src/sources/http_sender.c.o
/Users/rmuhamedgaliev/Projects/ArgentumTracer-native/src/sources/http_sender.c:36:33: warning: incompatible pointer types passing 'in_addr_t *' (aka 'unsigned int *') to parameter of type 'struct in_addr *' [-Wincompatible-pointer-types]
if ( inet_aton(SERVER_ADDR, &dest.sin_addr.s_addr) == 0 )
^~~~~~~~~~~~~~~~~~~~~
/usr/include/arpa/inet.h:83:47: note: passing argument to parameter here
int inet_aton(const char *, struct in_addr *);
^
1 warning generated.
[ 83%] Building C object CMakeFiles/argentumtracer.dir/src/sources/main_agent.c.o
[100%] Building C object CMakeFiles/argentumtracer.dir/src/sources/VMInfo.pb-c.c.o
Linking C shared library libargentumtracer.dylib
Undefined symbols for architecture x86_64:
"_protobuf_c_message_free_unpacked", referenced from:
_vminfo__free_unpacked in VMInfo.pb-c.c.o
"_protobuf_c_message_get_packed_size", referenced from:
_vminfo__get_packed_size in VMInfo.pb-c.c.o
"_protobuf_c_message_pack", referenced from:
_vminfo__pack in VMInfo.pb-c.c.o
"_protobuf_c_message_pack_to_buffer", referenced from:
_vminfo__pack_to_buffer in VMInfo.pb-c.c.o
"_protobuf_c_message_unpack", referenced from:
_vminfo__unpack in VMInfo.pb-c.c.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [libargentumtracer.dylib] Error 1
make[1]: *** [CMakeFiles/argentumtracer.dir/all] Error 2
make: *** [all] Error 2
的CMakeLists.txt
cmake_minimum_required(VERSION 3.1)
project(ArgentumTracer-native)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
FIND_PACKAGE(Java REQUIRED)
FIND_PACKAGE(JNI REQUIRED)
INCLUDE_DIRECTORIES(${JAVA_INCLUDE_PATH})
INCLUDE_DIRECTORIES(${JAVA_INCLUDE_PATH2})
file(GLOB SOURCE_FILES "src/sources/*.c" "src/sources/*.h")
add_executable(ArgentumTracer-native ${SOURCE_FILES})
add_library(argentumtracer SHARED ${SOURCE_FILES})
target_link_libraries(ArgentumTracer-native protobuf-c)
请帮我构建lib。我的存储库放在github repository分支 develop
中答案 0 :(得分:0)
正如我在评论中建议的那样,您需要使用CMake查找protobuf并将prothuf库添加到target_link_libraries。你确实有链接中明确说明的库protobuf-c,但这并不是一个非常简单的方法。当然,你应该尝试以下......
find_package(Protobuf MODULE)
if(NOT PROTOBUF_FOUND)
message(FATAL_ERROR "-- Protobuf is required!")
endif()
target_link_libraries(ArgentumTracer-native ${PROTOBUF_LIBRARIES})
现在,您可以确定您拥有正确的库。此外,如果找不到protobuf,你就会知道find_package何时失败并且有机会给CMake提供真正的位置。