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

Please send questions and bug reports to report@gnat.com following the same procedures used to submit reports with the GNAT toolset itself.