C++ 项目中同 C 交叉编译时发生 Undefined symbols for architecture x86_64: "xxx" 错误
出现如下错误, C++ 引入 C 库错误
一个比较治标不治本的解决方案是把 C dep 中的 .c 文件改成 .cpp;
关于这个报错, 网上有诸多讨论, 原因也不尽相同, 我这个情况特殊, 大家除非情况完全一样, 否则切莫当真以偏概全, 以免我误人子弟, 本文仅属于个人错误日志;
比较靠谱的解决方法大全推荐这一篇
C++ 常见的 Undefined symbols for architecture *
我初学的时候也通过这边掌握了泛型库(模板)要实现在 h/hpp 中的道理;
[ 41%] Built target glfw
[ 45%] Linking CXX executable craft
Undefined symbols for architecture x86_64:
"char_width(char)", referenced from:
_gen_sign_buffer(float*, float, float, float, int, char const*) in main.cpp.o
"cnd_signal(_opaque_pthread_cond_t*)", referenced from:
ensure_chunks_worker(Player*, Worker*) in main.cpp.o
"db_disable()", referenced from:
_main in main.cpp.o
"db_get_key(int, int)", referenced from:
request_chunk(int, int) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
check_workers() in main.cpp.o
"db_set_key(int, int, int)", referenced from:
parse_buffer(char*) in main.cpp.o
"del_buffer(unsigned int)", referenced from:
update_player(Player*, float, float, float, float, float, int) in main.cpp.o
interpolate_player(Player*) in main.cpp.o
delete_player(int) in main.cpp.o
delete_all_players() in main.cpp.o
gen_sign_buffer(Chunk*) in main.cpp.o
generate_chunk(Chunk*, WorkerItem*) in main.cpp.o
gen_chunk_buffer(Chunk*) in main.cpp.o
...
"gen_buffer(int, float*)", referenced from:
gen_crosshair_buffer() in main.cpp.o
gen_wireframe_buffer(float, float, float, float) in main.cpp.o
gen_sky_buffer() in main.cpp.o
render_wireframe(Attrib*, Player*) in main.cpp.o
render_crosshairs(Attrib*) in main.cpp.o
_main in main.cpp.o
"make_plant(float*, float, float, float, float, float, float, int, float)", referenced from:
gen_plant_buffer(float, float, float, float, int) in main.cpp.o
compute_chunk(WorkerItem*) in main.cpp.o
render_item(Attrib*) in main.cpp.o
"mtx_unlock(_opaque_pthread_mutex_t*)", referenced from:
check_workers() in main.cpp.o
ensure_chunks(Player*) in main.cpp.o
worker_run(void*) in main.cpp.o
"update_fps(FPS*)", referenced from:
_main in main.cpp.o
"client_recv()", referenced from:
_main in main.cpp.o
"client_sign(int, int, int, int, char const*)", referenced from:
set_sign(int, int, int, int, char const*) in main.cpp.o
on_key(GLFWwindow*, int, int, int, int) in main.cpp.o
"client_stop()", referenced from:
_main in main.cpp.o
"client_talk(char const*)", referenced from:
parse_command(char const*, int) in main.cpp.o
on_key(GLFWwindow*, int, int, int, int) in main.cpp.o
"db_auth_set(char*, char*)", referenced from:
parse_command(char const*, int) in main.cpp.o
"is_obstacle(int)", referenced from:
highest_block(float, float) in main.cpp.o
hit_test_face(Player*, int*, int*, int*, int*) in main.cpp.o
collide(int, float*, float*, float*) in main.cpp.o
render_wireframe(Attrib*, Player*) in main.cpp.o
on_right_click() in main.cpp.o
"make_player(float*, float, float, float, float, float)", referenced from:
gen_player_buffer(float, float, float, float, float) in main.cpp.o
update_player(Player*, float, float, float, float, float, int) in main.cpp.o
interpolate_player(Player*) in main.cpp.o
_main in main.cpp.o
"make_sphere(float*, float, int)", referenced from:
gen_sky_buffer() in main.cpp.o
_main in main.cpp.o
"thrd_create(_opaque_pthread_t**, int (*)(void*), void*)", referenced from:
_main in main.cpp.o
"client_block(int, int, int, int)", referenced from:
set_block(int, int, int, int) in main.cpp.o
"client_chunk(int, int, int)", referenced from:
request_chunk(int, int) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
check_workers() in main.cpp.o
"client_light(int, int, int, int)", referenced from:
toggle_light(int, int, int) in main.cpp.o
"client_login(char const*, char const*)", referenced from:
login() in main.cpp.o
"client_start()", referenced from:
_main in main.cpp.o
"create_world(int, int, void (*)(int, int, int, int, void*), void*)", referenced from:
load_chunk(WorkerItem*) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
worker_run(void*) in main.cpp.o
"load_program(char const*, char const*)", referenced from:
_main in main.cpp.o
"malloc_faces(int, int)", referenced from:
gen_cube_buffer(float, float, float, float, int) in main.cpp.o
gen_plant_buffer(float, float, float, float, int) in main.cpp.o
gen_player_buffer(float, float, float, float, float) in main.cpp.o
gen_text_buffer(float, float, float, char*) in main.cpp.o
update_player(Player*, float, float, float, float, float, int) in main.cpp.o
interpolate_player(Player*) in main.cpp.o
gen_sign_buffer(Chunk*) in main.cpp.o
...
"string_width(char const*)", referenced from:
_gen_sign_buffer(float*, float, float, float, int, char const*) in main.cpp.o
"client_enable()", referenced from:
_main in main.cpp.o
"db_load_signs(SignList*, int, int)", referenced from:
init_chunk(Chunk*, int, int) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
ensure_chunks_worker(Player*, Worker*) in main.cpp.o
"db_load_state(float*, float*, float*, float*, float*)", referenced from:
_main in main.cpp.o
"db_save_state(float, float, float, float, float)", referenced from:
_main in main.cpp.o
"set_matrix_2d(float*, int, int)", referenced from:
render_crosshairs(Attrib*) in main.cpp.o
render_text(Attrib*, int, float, float, float, char*) in main.cpp.o
"set_matrix_3d(float*, int, int, float, float, float, float, float, float, int, int)", referenced from:
ensure_chunks_worker(Player*, Worker*) in main.cpp.o
render_chunks(Attrib*, Player*) in main.cpp.o
render_signs(Attrib*, Player*) in main.cpp.o
render_sign(Attrib*, Player*) in main.cpp.o
render_players(Attrib*, Player*) in main.cpp.o
render_sky(Attrib*, Player*, unsigned int) in main.cpp.o
render_wireframe(Attrib*, Player*) in main.cpp.o
...
"sign_list_add(SignList*, int, int, int, int, char const*)", referenced from:
_set_sign(int, int, int, int, int, int, char const*, int) in main.cpp.o
"client_connect(char*, int)", referenced from:
_main in main.cpp.o
"client_disable()", referenced from:
_main in main.cpp.o
"client_version(int)", referenced from:
_main in main.cpp.o
"db_auth_select(char*)", referenced from:
parse_command(char const*, int) in main.cpp.o
"db_delete_sign(int, int, int, int)", referenced from:
unset_sign_face(int, int, int, int) in main.cpp.o
_set_sign(int, int, int, int, int, int, char const*, int) in main.cpp.o
"db_insert_sign(int, int, int, int, int, int, char const*)", referenced from:
_set_sign(int, int, int, int, int, int, char const*, int) in main.cpp.o
"db_load_blocks(Map*, int, int)", referenced from:
load_chunk(WorkerItem*) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
worker_run(void*) in main.cpp.o
"db_load_lights(Map*, int, int)", referenced from:
load_chunk(WorkerItem*) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
worker_run(void*) in main.cpp.o
"frustum_planes(float (*) [4], int, float*)", referenced from:
ensure_chunks_worker(Player*, Worker*) in main.cpp.o
render_chunks(Attrib*, Player*) in main.cpp.o
render_signs(Attrib*, Player*) in main.cpp.o
"is_transparent(int)", referenced from:
compute_chunk(WorkerItem*) in main.cpp.o
"make_character(float*, float, float, float, float, char)", referenced from:
gen_text_buffer(float, float, float, char*) in main.cpp.o
render_text(Attrib*, int, float, float, float, char*) in main.cpp.o
"sign_list_free(SignList*)", referenced from:
delete_chunks() in main.cpp.o
delete_all_chunks() in main.cpp.o
_main in main.cpp.o
"client_position(float, float, float, float, float)", referenced from:
_main in main.cpp.o
"db_delete_signs(int, int, int)", referenced from:
unset_sign(int, int, int) in main.cpp.o
_set_block(int, int, int, int, int, int, int) in main.cpp.o
"db_insert_block(int, int, int, int, int, int)", referenced from:
_set_block(int, int, int, int, int, int, int) in main.cpp.o
"db_insert_light(int, int, int, int, int, int)", referenced from:
toggle_light(int, int, int) in main.cpp.o
set_light(int, int, int, int, int, int) in main.cpp.o
_set_block(int, int, int, int, int, int, int) in main.cpp.o
parse_buffer(char*) in main.cpp.o
"is_destructable(int)", referenced from:
builder_block(int, int, int, int) in main.cpp.o
on_light() in main.cpp.o
on_left_click() in main.cpp.o
on_mouse_button(GLFWwindow*, int, int, int) in main.cpp.o
"set_matrix_item(float*, int, int, int)", referenced from:
render_item(Attrib*) in main.cpp.o
"sign_list_alloc(SignList*, int)", referenced from:
init_chunk(Chunk*, int, int) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
ensure_chunks_worker(Player*, Worker*) in main.cpp.o
"load_png_texture(char const*)", referenced from:
_main in main.cpp.o
"sign_list_remove(SignList*, int, int, int, int)", referenced from:
unset_sign_face(int, int, int, int) in main.cpp.o
_set_sign(int, int, int, int, int, int, char const*, int) in main.cpp.o
"make_character_3d(float*, float, float, float, float, int, char)", referenced from:
_gen_sign_buffer(float*, float, float, float, int, char const*) in main.cpp.o
"db_auth_select_none()", referenced from:
parse_command(char const*, int) in main.cpp.o
"db_delete_all_signs()", referenced from:
_main in main.cpp.o
"make_cube_wireframe(float*, float, float, float, float)", referenced from:
gen_wireframe_buffer(float, float, float, float) in main.cpp.o
render_wireframe(Attrib*, Player*) in main.cpp.o
"db_auth_get_selected(char*, int, char*, int)", referenced from:
login() in main.cpp.o
"sign_list_remove_all(SignList*, int, int, int)", referenced from:
unset_sign(int, int, int) in main.cpp.o
_set_block(int, int, int, int, int, int, int) in main.cpp.o
"wrap(char const*, int, char*, int)", referenced from:
_gen_sign_buffer(float*, float, float, float, int, char const*) in main.cpp.o
"db_init(char*)", referenced from:
_main in main.cpp.o
"map_get(Map*, int, int, int)", referenced from:
_hit_test(Map*, float, int, float, float, float, float, float, float, int*, int*, int*) in main.cpp.o
hit_test(int, float, float, float, float, float, int*, int*, int*) in main.cpp.o
collide(int, float*, float*, float*) in main.cpp.o
toggle_light(int, int, int) in main.cpp.o
get_block(int, int, int) in main.cpp.o
builder_block(int, int, int, int) in main.cpp.o
paste() in main.cpp.o
...
"map_set(Map*, int, int, int, int)", referenced from:
map_set_func(int, int, int, int, void*) in main.cpp.o
toggle_light(int, int, int) in main.cpp.o
set_light(int, int, int, int, int, int) in main.cpp.o
_set_block(int, int, int, int, int, int, int) in main.cpp.o
parse_buffer(char*) in main.cpp.o
"cnd_init(_opaque_pthread_cond_t*)", referenced from:
_main in main.cpp.o
"cnd_wait(_opaque_pthread_cond_t*, _opaque_pthread_mutex_t*)", referenced from:
worker_run(void*) in main.cpp.o
"db_close()", referenced from:
_main in main.cpp.o
"is_plant(int)", referenced from:
compute_chunk(WorkerItem*) in main.cpp.o
render_item(Attrib*) in main.cpp.o
on_left_click() in main.cpp.o
"map_copy(Map*, Map*)", referenced from:
check_workers() in main.cpp.o
ensure_chunks_worker(Player*, Worker*) in main.cpp.o
"map_free(Map*)", referenced from:
delete_chunks() in main.cpp.o
delete_all_chunks() in main.cpp.o
check_workers() in main.cpp.o
_main in main.cpp.o
"mtx_init(_opaque_pthread_mutex_t*, int)", referenced from:
_main in main.cpp.o
"mtx_lock(_opaque_pthread_mutex_t*)", referenced from:
check_workers() in main.cpp.o
ensure_chunks(Player*) in main.cpp.o
worker_run(void*) in main.cpp.o
"simplex2(float, float, int, float, float)", referenced from:
compute_chunk(WorkerItem*) in main.cpp.o
"tokenize(char*, char const*, char**)", referenced from:
_gen_sign_buffer(float*, float, float, float, int, char const*) in main.cpp.o
parse_buffer(char*) in main.cpp.o
"db_commit()", referenced from:
_main in main.cpp.o
"db_enable()", referenced from:
_main in main.cpp.o
"gen_faces(int, int, float*)", referenced from:
gen_cube_buffer(float, float, float, float, int) in main.cpp.o
gen_plant_buffer(float, float, float, float, int) in main.cpp.o
gen_player_buffer(float, float, float, float, float) in main.cpp.o
gen_text_buffer(float, float, float, char*) in main.cpp.o
update_player(Player*, float, float, float, float, float, int) in main.cpp.o
interpolate_player(Player*) in main.cpp.o
gen_sign_buffer(Chunk*) in main.cpp.o
...
"make_cube(float*, float (*) [4], float (*) [4], int, int, int, int, int, int, float, float, float, float, int)", referenced from:
gen_cube_buffer(float, float, float, float, int) in main.cpp.o
compute_chunk(WorkerItem*) in main.cpp.o
render_item(Attrib*) in main.cpp.o
"map_alloc(Map*, int, int, int, int)", referenced from:
init_chunk(Chunk*, int, int) in main.cpp.o
create_chunk(Chunk*, int, int) in main.cpp.o
ensure_chunks_worker(Player*, Worker*) in main.cpp.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[3]: *** [craft] Error 1
make[2]: *** [CMakeFiles/craft.dir/all] Error 2
make[1]: *** [CMakeFiles/craft.dir/rule] Error 2
make: *** [craft] Error 2
