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c2b004ba0e
The user might want to use the userdata for something different, so the serializer should ignore it by default. Explicitly setting the serializer to json_object_double_to_json_string will still make it interpret the userdata as a format string.
json-c
Building on Unix with git, gcc and autotools
Home page for json-c: https://github.com/json-c/json-c/wiki
Caution: do NOT use sources from svn.metaparadigm.com, they are old.
Prerequisites:
gcc,clang, or another C compilerlibtool
If you're not using a release tarball, you'll also need:
autoconf(autoreconf)automake
Make sure you have a complete libtool install, including libtoolize.
json-c GitHub repo: https://github.com/json-c/json-c
$ git clone https://github.com/json-c/json-c.git
$ cd json-c
$ sh autogen.sh
followed by
$ ./configure
$ make
$ make install
To build and run the test programs:
$ make check
Linking to libjson-c
If your system has pkgconfig,
then you can just add this to your makefile:
CFLAGS += $(shell pkg-config --cflags json-c)
LDFLAGS += $(shell pkg-config --libs json-c)
Without pkgconfig, you would do something like this:
JSON_C_DIR=/path/to/json_c/install
CFLAGS += -I$(JSON_C_DIR)/include/json-c
LDFLAGS+= -L$(JSON_C_DIR)/lib -ljson-c