问题
I'm trying to use libjson within a C++ project and the docs tell me to just "add libjson's source to your project, comment JSON_LIBRARY in the JSONOptions.h file and any C++ compiler should compile it."
Being quite new to C++ and all that, how exactly am I supposed to do that (not using any IDE)? Should I just #include the libjson.h file and that's it? Shouldn't I reference libjson somehow in my call to g++ when compiling my project?
thx in advance
回答1:
You have to:
One,
#include <libjson.h>
in order to get access to the functions and data types the library offers, then
Two, link against the libjsonz library:
g++ -o myprogram myprogram.c -ljson
(the -ljson flag has to come last or you'll get a linker error with never versions of GCC.)
EDIT: if you need to build the library, you typically have a configure script or a Makefile. See how to use them.
回答2:
If you go into the libjson library folder, you will see a makefile. Navigate to that directory in a terminal and type:
make
then
make install
Then, in your code
#include <libjson.h>
or, depending on your include path:
#include <libjson/libjson.h>
That should be all that you need to do.
If you need additional help, you can post in the help forum at sourceforge (I am the author of libjson)
回答3:
if you install json you should find include file at /usr/local/include so
#include <json/json.h>
gcc exasmple.c -ljson
来源：https://stackoverflow.com/questions/11842976/using-libjson-in-a-c-project