Trying to build shared library in CLion/CMake

问题:

I've been trying to download and build the Stanford Library source files and build a library out of them to use for my own project using the CLion (IDE). I've been following instructions from this answer and my CMakeLists file looks like this:

cmake_minimum_required(VERSION 3.3)
project(Stanford)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(CMAKE_BUILD_TYPE Release)


file(GLOB MyHeaders "*.h" /stacktrace/"*.h" private/"*.h")
file(GLOB MySources "*.cpp" /stacktrace/"*.cpp" private/"*.cpp")
include_directories(MyHeaders)
add_library(Stanford SHARED ${MySources} ${MyHeaders})


target_include_directories (Stanford PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

When opening the run menu, I get the following:

If I tell it to build anyway I get the following errors.

I've been struggling to find out what why I need an executable to build a library and what those undefined references mean.

回答1:

I don't know if it's the cause of your problem, but include command should look like this: include_directories(${MyHeaders}). ${MyHeaders} will expand the variable MyHeaders and pass its current value to include_directories. Otherwise you are, literally, including directory MyHeaders.

回答2:

Standford library provide call_stack_windows.cpp and call_stack_gcc.cpp. Only one should be included. In your case, you should use call_stack_gcc.cpp. call_stack_windows.cpp cannot link with gcc.

So, my answer is: don't use globbing to declare your sources. It is very error prone. If you are lazy, just copy-paste output of find . -name '*.cpp' -o -name '*.h' to your CMakeList.txt.

In add, there are many bad practices in CMakeList.txt you show. I suggest you to read this answer.