Json---using Jsoncpp under Linux

First, install the SCons

: Http://sourceforge.net/projects/scons/files/scons/2.1.0/scons-2.1.0.tar.gz/download

Decompression: TAR-ZVXF scons-2.1.0.tar.gz

Go to unzip directory scons-2.1.0 execute command:

sudo python setup.py install

Second, installation Jsoncpp

: http://sourceforge.net/projects/jsoncpp/

Decompression: TAR-ZVXF jsoncpp-src-0.5.0.tar.gz

Go to the Jsoncpp decompression directory and execute the command:

sudo scons PLATFORM=LINUX-GCC

Copy the JSON folder under the/jsoncpp-src-0.5.0/include/directory to the/usr/local/include/

Copy the LIBJSON_LINUX-GCC-4.9.1_LIBMT.A under the JSONCPP-SRC-0.5.0/LIBS/LINUX-GCC-4.9.1/directory to/usr/local/lib/, and for ease of use, Rename it to Libjson.a

Third, the use of LIBJSON.A

Makefile

Target=main

inc=-i/usr/local/include/libmongoc-1.0-i/usr/local/include/libbson-1.0/-i/usr/local/include/json
Lib_path=-l/usr/local/lib
lib=-lmongoc-1.0-lbson-1.0 /usr/local/lib/libjson.a

Cflags:=-wall-g-o0-lrt-rdynamic-fpic-wl,-rpath=./$ (INC) $ (Lib_path)
cppflags:=$ (CFLAGS)

src=$ (Shell Echo *.cpp)
obj=$ (Patsubst%.cpp,%.o,$ (SRC))

All: $ (TARGET)

$ (TARGET): $ (OBJ)
$ (CXX) $^ $ (CFLAGS) $ (LIB)-o [email protected]

Clean
Rm-f $ (OBJ)
Rm-f $ (TARGET)

　　

JSON syntax is visible: http://www.cnblogs.com/SZxiaochun/p/5866401.html Demo

Iv. Compile Error

Error:missing binary operator before token "("

/usr/include/wchar.h:104:1: Error: ' __begin_namespace_c99 ' does not name a type
/usr/include/wchar.h:107:1: Error: ' __end_namespace_c99 ' does not name a type
/usr/include/wchar.h:135:1: Error: ' __END_NAMESPACE_STD ' does not name a type
/usr/include/wchar.h:149:6: error:expected initializer before ' __throw '
/usr/include/wchar.h:153:39:error:expected initializer before ' __throw '
/usr/include/wchar.h:157:6: error:expected initializer before ' __throw '
/usr/include/wchar.h:161:6: error:expected initializer before ' __throw '

/usr/include/c++/4.6/cwchar:143:11:error: ':: BTOWC ' have not been declared
/usr/include/c++/4.6/cwchar:144:11:error: ':: FGETWC ' have not been declared
/usr/include/c++/4.6/cwchar:148:11:error: ':: Fwide ' have not been declared
/usr/include/c++/4.6/cwchar:149:11:error: ':: fwprintf ' have not been declared
/usr/include/c++/4.6/cwchar:150:11:error: ':: fwscanf ' have not been declared

/usr/include/c++/4.6/cwchar:215:55:error:invalid conversion from ' const wchar_t* ' to ' wchar_t* ' [-fpermissive]
/usr/include/c++/4.6/cwchar:214:3: error:initializing argument 1 of ' wchar_t* std::wcschr (wchar_t*, wchar_t) ' [-fpermi Ssive]

/usr/include/locale.h:at Global scope:
/usr/include/locale.h:32:1: Error: ' __begin_decls ' does not name a type
/usr/include/locale.h:125:65:error:expected initializer before ' __throw '
/usr/include/locale.h:128:40:error:expected initializer before ' __throw '
/usr/include/locale.h:130:1: Error: ' __END_NAMESPACE_STD ' does not name a type

......

　　Reason:

There is a features.h file in the Jsoncpp, there is also a file with the same name under/usr/include, so problems such as file dependency order occur, and once confused, a bunch of errors are reported.

　　Workaround:

Rename the Jsoncpp features.h , and then Json.h and reader.h to reference it, in the corresponding position to replace the new file name is OK.

　　

Json---using Jsoncpp under Linux