std::string_view has not been declared

[ssbmtonberry]

std::string_view has not been declared

[SSBMTonberry]

I need some more information to able to help you here.
What OS are you using, compiler or build system. Would also be useful to know what version of Tileson you use as well :)
If your build system is somehow set to something lower than C++17, you'd probably get an error like this, but I really have nothing to go on to help you here, yet.

Edit: A small code snippet could also be useful, unless you can link me to a project.

[SeleDreams]

I need some more information to able to help you here.
What OS are you using, compiler or build system. Would also be useful to know what version of Tileson you use as well :)
If your build system is somehow set to something lower than C++17, you'd probably get an error like this, but I really have nothing to go on to help you here, yet.

Edit: A small code snippet could also be useful, unless you can link me to a project.

I'm using Windows 10 with the MinGW-w64 toolchain and using cmake,
I use the latest release from here as an hpp include (1.2.0)
My project c++ v is set to c++20 but i also tried c++ 17, it didn't change anything, snippet wise i'm not really sure what it would change as i get this error with the simple fact to include the hpp no matter the rest of the code even when not actually using it

[SSBMTonberry]

Compiling with C++17 or higher should be fine, as long as your compiler supports it 🙂
This may sound like a stupid question, but are you able to compile and run a bare-bone program using just a simple program like this?

#include <string_view>
#include <iostream>

int main(int argc, char **argv)
{
    std::string_view str{"Just a test"};
    std::cout << "Test: " << str;
    return 0;
}

For reference, you could use this simple CMakeLists.txt for the above example:

cmake_minimum_required(VERSION 3.11)
project(Dummy)

set(CMAKE_CXX_STANDARD 17)

set(SOURCE_FILES main.cpp )
add_executable(Dummy ${SOURCE_FILES} )

Also, keep in mind the version of your MinGW-w64 toolchain must support the filesystem and string_view features of C++17.
Unfortunately Tileson has not been tested with MinGW, but it has been well tested using MSVC on Windows, GCC og Linux, and Clang on OSX. I also remember I've had some issues with MinGW in the past, experimenting with std::filesystem stuff, so I'm suspecting that your current MinGW toolchain might not support string_view (or maybe C++17 features in general).

Could you test the above code on your system using MinGW and report back the result? 🙂

Also: Which version of MinGW-w64 are you using?

[SSBMTonberry]

Closing issue due to inactivity. Also tested newest release of Tileson with the supported compilers for all platforms with no issue, so assuming this is a MinGW issue with lack of support for needed C++17 features.