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libyang is YANG data modelling language parser and toolkit written (and providing API) in C.

• parsing (and validating) data models in YIN format
• reading instance data in XML format and validating
• providing instance data in XML format
• providing instance data in JSON format

• parsing (and validating) data models in YANG format
• reading instance data in JSON format and validating

• cmake >= 2.6
• libpcre
• cmocka >= 1.0.0 (for tests only, see Tests)

$ mkdir build; cd build
$ cmake ..
$ make 
# make install

There are two build modes:

• Release. This generates library for the production use without any debug information.
• Debug. This generates library with the debug information and disables optimization of the code.

The Debug mode is currently used as the default one. to switch to the Release mode, enter at the command line:

$ cmake -D CMAKE_BUILD_TYPE:String="Release" .

Set CC variable:

$ CC=/usr/bin/clang cmake ..

libyang includes several tests built with cmocka. The tests can be found in tests subdirectory and they are designed for checking library functionality after code changes.

The tests are by default built in the Debug build mode by running

$ make

In case of the Release mode, the tests are not built by default (it requires additional dependency), but it can be enabled via cmake option:

$ cmake -DENABLE_BUILD_TESTS=ON ..

Tests can be run by the make's test target:

$ make test

Note that, with CMake, if you want to change the compiler or its options after you already ran CMake, you need to clear its cache first. For your convenience, this action is available as cclean target of the Makefile:

$ make cclean
$ CC=gcc CFLAGS='-fstack-protector-strong -Wa,--noexecstack' cmake ..