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# libgdata
libgdata is a GLib-based library for accessing online service APIs using the
GData protocol — most notably, Google's services. It provides APIs to access
the common Google services, and has full asynchronous support.
See the test programs in `gdata/tests/` for simple examples of how to use the
code.
libgdata is API and ABI stable.
## Dependencies
* glib-2.0 ≥ 2.44.0
* libxml-2.0
* gio-2.0 ≥ 2.44.0
* libsoup-2.4 ≥ 2.42.0
* liboauth ≥ 0.9.4
* json-glib ≥ 0.15.0
If compiling with `--enable-gnome` (for GNOME support):
* gcr-base-3
* goa-1.0 ≥ 3.8
If compiling the demos:
* gtk+-3.0 ≥ 2.91.2
## Environment variables
If the environment variable `LIBGDATA_DEBUG` is set to one of the following
values, libgdata will give debug output (at various levels):
* `0`: Output no debug messages or network logs
* `1`: Output debug messages, but not network logs
* `2`: Output debug messages and network traffic headers
* `3`: Output debug messages and full network traffic logs, redacting usernames,
passwords and auth. tokens
* `4`: Output debug messages and full network traffic logs, and don't redact
usernames, passwords and auth. tokens
If `LIBGDATA_DEBUG` is unset, no debug output will be produced.
So, to debug a program which uses libgdata, run it from a terminal with the
following command:
```
LIBGDATA_DEBUG=3 ./my-program-name &> libgdata.log
```
## Deprecation guards
If `LIBGDATA_DISABLE_DEPRECATED` is defined when compiling against libgdata, all
deprecated API will be removed from included headers.
## Default branch renamed to `main`
The default development branch of libgdata has been renamed to `main`. To update
your local checkout, use:
```sh
git checkout master
git branch -m master main
git fetch
git branch --unset-upstream
git branch -u origin/main
git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
```
## Licensing
libgdata is licensed under the LGPL; see COPYING for more details.
## Contact
https://wiki.gnome.org/Projects/libgdata
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