我正在尝试在 CLion IDE
中运行简单的 OpenMP
程序。但是当我运行时出现了一个错误:
CMakeFiles\openmp_test_clion.dir/objects.a(main.cpp.obj): In function `main':
D:/.../openmp_test_clion/main.cpp:9: undefined reference to 'omp_get_thread_num'
collect2.exe: error: ld returned 1 exit status
这是我的代码:
#include <stdio.h>
#include <omp.h>
int main()
{
int id;
#pragma omp parallel private(id)
{
id = omp_get_thread_num();
printf("%d: Hello World!\n", id);
}
return 0;
}
这是我的CMakeLists.txt
文件:
cmake_minimum_required(VERSION 3.6)
project(openmp_test_clion)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(SOURCE_FILES main.cpp)
add_executable(openmp_test_clion ${SOURCE_FILES})
message(STATUS "Checking OpenMP")
find_package(OpenMP)
IF(OPENMP_FOUND)
message("Found OpenMP!)
# add flags for OpenMP
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${OpenMP_SHARED_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
ELSE()
message("Missed OpenMP!")
ENDIF()
我对OpenMP
没有任何经验,我是一个C++
初学者,请给我一点设置项目的解释。