add_library行应该是您所需要的全部。请看我刚刚写的这个示例代码，以测试创建一个并使用它（在Ubuntu 16.04上）：
结构h：

int sum( int a, int b );

结构c：

int sum( int a, int b ) { 
    return a + b;
}

Main.c：

#include <stdio.h>
#include "Structure.h"
int main() {
    int a = 5;
    int b = 8;
    int c = sum( a, b );
    printf( "sum of %d and %d is %d\n", a, b, c );
    return 0;
}

CMakeLists.txt:

# CMake instructions to make the static lib
ADD_LIBRARY( MyStaticLib STATIC
             Structure.c )
# CMake instructions to test using the static lib
SET( APP_EXE StaticTest )
ADD_EXECUTABLE( ${APP_EXE}
                Main.c ) 
TARGET_LINK_LIBRARIES( ${APP_EXE}
                       MyStaticLib )

然后这里是运行它的输出：

nick@dusseldorf:~/code/cmake/static_lib$ ls
CMakeLists.txt  Main.c  Structure.c  Structure.h
nick@dusseldorf:~/code/cmake/static_lib$ cmake .
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/nick/code/cmake/static_lib
nick@dusseldorf:~/code/cmake/static_lib$ ls
CMakeCache.txt  CMakeFiles  cmake_install.cmake  CMakeLists.txt  Main.c  Makefile  Structure.c  Structure.h
nick@dusseldorf:~/code/cmake/static_lib$ make
Scanning dependencies of target MyStaticLib
[ 25%] Building C object CMakeFiles/MyStaticLib.dir/Structure.c.o
[ 50%] Linking C static library libMyStaticLib.a
[ 50%] Built target MyStaticLib
Scanning dependencies of target StaticTest
[ 75%] Building C object CMakeFiles/StaticTest.dir/Main.c.o
[100%] Linking C executable StaticTest
[100%] Built target StaticTest
nick@dusseldorf:~/code/cmake/static_lib$ ls
CMakeCache.txt  cmake_install.cmake  libMyStaticLib.a  Makefile    Structure.c
CMakeFiles      CMakeLists.txt       Main.c            StaticTest  Structure.h
nick@dusseldorf:~/code/cmake/static_lib$ ./StaticTest 
sum of 5 and 8 is 13

我也有同样的问题。我错过的是创建构建文件的位置。
CLion在cmake-build-*目录下创建库或可执行文件。如果Build, Execution, Deployment > CMake > Configuration是Debug，则在cmake-build-debug下创建lib文件（.a）。

在你使用命令 cmake . 后，Makefile将有类似 *make default_target * 的选项，撤销它，然后你在r目录中得到一个.a文件。访问https://cmake.org/cmake/help/v3.0/command/add_library.html将帮助你！

它解决了我的问题。我希望建立一个CLion项目，使用C++ 23客户端和静态库。我很感谢你的帖子，因为在我读了它之后，我在几分钟内就完成了我的工作。出于某种原因，我发现CMake是反直觉的，尽管有很多参考资料，我仍然缺乏关于如何做简单的事情的直接指导，这些事情在“make”中很容易。以下是我最终得到的结果：

`cmake_minimum_required(VERSION 3.26)
project(vpa)
set(CMAKE_CXX_STANDARD 23)
#########################
# Regarding the Library #
#########################
add_library(vpad STATIC vpad.cpp
        vpad.cpp        vpad.h)
################################
# Regarding the Client Program #
################################
add_executable(vpa main.cpp
        vpa.cpp         vpa.h
        vpad.h
)
target_link_libraries(vpa vpad)`