build2 Package for glbinding

glbinding is a cross-platform C++ binding for the OpenGL API, generated using the gl.xml specification.

Usage

Make sure to add the stable section of the cppget.org repository to your project's repositories.manifest to be able to fetch this package.

:
role: prerequisite
location: https://pkg.cppget.org/1/stable
# trust: ...

If the stable section of cppget.org is not an option then add this Git repository itself instead as a prerequisite.

:
role: prerequisite
location: https://github.com/build2-packaging/glbinding.git

Add the dependency in your project's manifest file to make the package available for import.

depends: glbinding ^3.3.0

Both libraries, glbinding and glbinding-aux, are provided in the same package glbinding. To import and add them to the variable libs in a buildfile, one would do the following.

import libs += glbinding%lib{glbinding}
import libs += glbinding%lib{glbinding-aux}

Additionally, this repository also contains the glbinding-tests, glbinding-examples, and glbinding-tools packages that contain executables for learning and testing. These had to be provided as standalone packages to allow for custom configurations during CI runs. Additionally, glbinding-tools is also installable.

Configuration

Boost.Thread

config [bool] config.glbinding.use_boost_thread ?= false

For its implementation glbinding allows to optionally use Boost's thread library. Set the configuration variable to true to use boost::thread instead of std::thread from the C++ STL.

KHR Headers

config [bool] config.glbinding.use_packaged_khr ?= true

glbinding needs some standard definitions from the KHR/khrplatform.h header file. To be self-contained, it comes with its own version of that header file. Set the configuration variable to false if glbinding should use the KHR headers given by the system.

OpenGL Context Testing for Tests and Tools

config [bool] config.glbinding_tests.opengl_context_testing ?= true
config [bool] config.glbinding_tools.opengl_context_testing ?= true

These config variable decide whether to link regression tests or run executables that require a valid OpenGL context to succeed. As tests and tools will likely to be used on targets where OpenGL drawing is required, these variables are enabled by default. However, they should be disabled for target configurations in CI runs that do not support GUI mocking.

Issues

• Compilation might abort due to insufficient memory as it may use up all available RAM. For this case, re-run the compilation process multiple times until no errors occur or use less threads for build2 b -j 1 ....
• The examples fail on a few MinGW-based Windows configurations due to strange undefined references.
• Warnings are generated on Windows that show that redeclarations without dllimport attribute occur. It does not seem to be an actual problem but should be dealt with in the future.

Contributing

Thanks in advance for your help and contribution to keep this package up-to-date. For now, please, file an issue on GitHub for everything that is not described below.

Recommend Updating Version

Please, file an issue on GitHub with the new recommended version.

Update Version by Pull Request

1. Fork the repository on GitHub and clone it to your local machine.
2. Run git submodule init and git submodule update to get the current upstream directory.
3. Inside the upstream directory, checkout the new library version X.Y.Z by calling git checkout vX.Y.Z that you want to be packaged.
4. If needed, change source files, buildfiles, and symbolic links accordingly to create a working build2 package. Make sure not to directly depend on the upstream directory inside the build system but use symbolic links instead.
5. Test if the packages compile and execute examples and tools.
6. Update library version in all manifest files if it has changed or add package update by using +n for the n-th update.
7. Make an appropriate commit message by using imperative mood and a capital letter at the start and push the new commit to the master branch.
8. Run bdep ci and test for errors for the package glbinding only.
9. If everything works fine, make a pull request on GitHub and write down the bdep ci link to your CI tests.
10. After a successful pull request, we will run the appropriate commands to publish a new package version.

Update Version Directly if You Have Permissions

1. Inside the upstream directory, checkout the new library version X.Y.Z by calling git checkout vX.Y.Z that you want to be packaged.
2. If needed, change source files, buildfiles, and symbolic links accordingly to create a working build2 package. Make sure not to directly depend on the upstream directory inside the build system but use symbolic links instead.
3. Test if the packages compile and execute examples and tools.
4. Update library version in all manifest files if it has changed or add package update by using +n for the n-th update.
5. Make an appropriate commit message by using imperative mood and a capital letter at the start and push the new commit to the master branch.
6. Run bdep ci and test for errors and warnings.
7. When successful, run bdep release --tag --push to push new tag version to repository.
8. Run bdep publish to publish the package to cppget.org.