The LibGPR2 library depends on some other external libraries:

• GNATcoll

• Langkit

Both must be installed on the system to be able to compile LibGPR2.

To regenerate the GPR parser from the Langkit grammar the following additional external modules are required:

• Python

• Langkit (build directory)

The following variables can be used to configure the libGPR2 library:

• prefix: Location of the installation, the default is the running GNAT installation root.

• BUILD: Control the build options: release (default) or debug.

• PROCESSORS: Parallel compilation (default is 0, depends on the number of cores).

• TARGET: For cross-compilation, auto-detected for native platforms.

• SOURCE_DIR: For out-of-tree build.

To use the default options:

$ make setup

For example, to setup LibGPR2 to install a debug version on /opt/libgpr2:

$ make prefix=/opt/libgpr2 BUILD=debug install

LibGPR2 is using project file, to build it is as simple as:

$ gprbuild gpr2.gpr

Though, to build all versions of the library (static, relocatable and static-pic) plus the associated tools it is simpler to use the provided Makefile:

$ make

Then, to install it:

$ make install

See the LibGPR2 examples.

To run the testsuite GNATpython is required:

$ cd testsuite
$ ./testsuite.py

If you got this source file from GNATtracker, please send questions and bug reports to report@gnat.com following the same procedures used to submit reports with the GNAT toolset itself.

If you read this from the GitHub repository, please open issues to send questions and bug reports.