How to import jsoncpp in cLion?

Question

I am new to C++ and cLion and I'm using JsonCpp to parse object to text and vice-versa. I am a mac user and I have my.h jsoncpp files stored in /usr/include/jsoncpp and.dylib stored in /usr/lib.

What is the a way to include jsoncpp library into my project? I've tried:

include_directories(/usr/include/jsoncpp)

I can #include <json.h> but there is another error as shown below:

Undefined symbols for architecture x86_64:
"Json::Value::Value(Json::ValueType)", referenced from:
      Account::toJson() in Account.cpp.o
      StorageLoad::readfile(std::__1::basic_ifstream<char, std::__1::char_traits<char> >&) in StorageLoad.cpp.o
  "Json::Value::Value(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
      Account::toJson() in Account.cpp.o

How to resolve this error? I've spent many hours trying but no avail.

Answer 1

This solution work on CLion 2021.1.3 (Mac Big Sur 11.6)

The solution provided is based on this thread , which discusses a similar problem but with a different library.

Install the library with Homebrew using the Terminal and the command:
brew install jsoncpp

Then, you need the installation location . Either through the output of the installation or using the command:
brew info jsoncpp

The path should be listed and look like this:
/usr/local/Cellar/jsoncpp/1.9.4_1

Then, add the following to your CMakeLists.txt situated in your CLion project (don't forget to use the path you obtained instead).

INCLUDE_DIRECTORIES(  /usr/local/Cellar/jsoncpp/1.9.4_1/include )
LINK_DIRECTORIES(  /usr/local/Cellar/jsoncpp/1.9.4_1/lib )

file(GLOB LIBRARIES "/usr/local/Cellar/jsoncpp/1.9.4_1/lib/*.dylib")
message("LIBRARIES = ${LIBRARIES}")

TARGET_LINK_LIBRARIES(myProjectName ${LIBRARIES})

Reload your CMake (if not done automatically).

Then you are free to use the JSON library you need in your project files using the syntax:

#include <json/ ... >

Example:

#include <json/json.h>
#include <json/value.h>
#include <json/writer.h>
#include <json/reader.h>
...