How to use this library?

[ChristianOL]

Is there an example how to install and use this library? I have downloaded 5.0.0 release,
I am using DevC++ 5.11 to compile a simple program. I copied all headers and the src/format.cc files. Are there more steps needed? This is my code, when compiling I, get a bunch of errors.

Code:
#include
#include "fmt/format.h"
#include "fmt/ostream.h"
#include "fmt/core.h"
int main() {
fmt::print("The answer is {}.", 42);
return 0;
}

First error by compiler:
17 30 C:\Users\chris\fmt-5.0.0\include\fmt\time.h [Error] macro "localtime_r" requires 2 arguments, but only 1 given.

Code lines marked by compiler on time.h file:
#ifndef FMT_TIME_H_
#define FMT_TIME_H_
#include "format.h"
#include
FMT_BEGIN_NAMESPACE
namespace internal{
inline null<> localtime_r(...) { return null<>(); } // <-- ERROR IS MARKED HERE
inline null<> localtime_s(...) { return null<>(); }
inline null<> gmtime_r(...) { return null<>(); }
inline null<> gmtime_s(...) { return null<>(); }
}

Screenshot:
fmt_error

[vitaut]

Please see http://fmt.dev/latest/usage.html and http://fmt.dev/latest/api.html.

For fmt::print you just need to include fmt/core.h.

As for the issue with localtime_r, what OS and compiler do you use?

[ChristianOL]

Previously I tried to build the library with CMAKE but I still got a bunch of errors. I was wandering if there is an easier way like just using the header files? (more simple sort of step by step help).
Is this a different option rather than building a library? "Header-only usage with CMake".
Sorry am not very familiar with this.

Thanks!
Windows 10 Home Single Language
MinGW64

[vitaut]

The localtime_r issue should be fixed in e4cf404.

You can enable the header-only mode by defining the FMT_HEADER_ONLY macro to 1 in which case you don't need to compile the library.

[ChristianOL]

Thank you very much. I was able to use the fmt. I incorrectly understood that creating a library was needed. I see it is optional.