How to load libucl through cmake

[cmdmspaint]

hi,I encountered a problem when introducing libucl through cmake
this is build error
make -j
[ 50%] Building CXX object CMakeFiles/libucl_demo.dir/example_libucl.cc.o
/home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc: In function ‘int main(int, char**)’:
/home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc:7:2: error: ‘ucl_parser_t’ was not declared in this scope
ucl_parser_t parser = ucl_parser_new(0);
^~~~~~~~~~~~
/home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc:7:2: note: suggested alternative: ‘ucl_parser’
ucl_parser_t parser = ucl_parser_new(0);
^~~~~~~~~~~~
ucl_parser
/home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc:7:16: error: ‘parser’ was not declared in this scope
ucl_parser_t parser = ucl_parser_new(0);
^~~~~~
/home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc:7:16: note: suggested alternative: ‘strsep’
ucl_parser_t parser = ucl_parser_new(0);
^~~~~~
strsep
/home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc:18:22: error: invalid conversion from ‘const ucl_object_t’ {aka ‘const ucl_object_s’} to ‘ucl_object_t’ {aka ‘ucl_object_s’} [-fpermissive]
ucl_object_unref(obj);
^~~
In file included from /home/maomao/git/database/LinTSDB/Test/libucl/example_libucl.cc:3:
/usr/local/include/ucl.h:767:49: note: initializing argument 1 of ‘void ucl_object_unref(ucl_object_t*)’
UCL_EXTERN void ucl_object_unref (ucl_object_t *obj);
~~~~~~~~~~~~~~^~~
make[2]: *** [CMakeFiles/libucl_demo.dir/build.make:82：CMakeFiles/libucl_demo.dir/example_libucl.cc.o] 错误 1
make[1]: *** [CMakeFiles/Makefile2:95：CMakeFiles/libucl_demo.dir/all] 错误 2
make: *** [Makefile:103：all] 错误 2

this is my cmake file
`
cmake_minimum_required(VERSION 3.10...3.21)
project(libucl_demo CXX)
set(CMAKE_CXX_STANDARD 11)

set(SOURCE_FILE ${CMAKE_CURRENT_SOURCE_DIR}/example_libucl.cc)
set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
find_package(ucl REQUIRED)
include_directories(${LIBUCL_INCLUDE_DIRS})

add_executable(${PROJECT_NAME} ${SOURCE_FILE})

target_link_libraries(${PROJECT_NAME} ucl::ucl)

`

this is my example file
`
#include
#include
#include <ucl.h>

int main(int argc, char **argv)
{
ucl_parser_t *parser = ucl_parser_new(0);
ucl_parser_add_file(parser, "config.conf");
const ucl_object_t *obj = ucl_parser_get_object(parser);
ucl_parser_free(parser);
const ucl_object_t *value = ucl_object_lookup_path(obj, "section.key");
if (value != NULL) {
const char *str_value = ucl_object_tostring(value);
printf("config value: %s\n", str_value);
}
ucl_object_unref(obj);
return 0;
}

`