42a78a1aae
When compiling Mesa on Android targeting Android, under some conditions `memfd_create()` and `getrandom()` are detected as available when they are not, so they should not be assumed to be available unless they are detected by Meson as available in the appropriate header passed in the `prefix` argument to Meson's `has_function()` method. `memfd_create()` is not available unless the target Android API level is 30 (Android 11) or higher and the define `_GNU_SOURCE` (which in turn sets the define `__USE_GNU`) is set, and Mesa does set `_GNU_SOURCE`, so by setting `args: pre_args` in the appropriate call to `has_function()` (which causes `-D_GNU_SOURCE` to be added to the arguments used by Meson to check the header only if it was detected as necessary for `pre_args` in the earlier condition), `memfd_create()` will be correctly detected as available when targeting (only) Android 11 or newer (and other operating systems that support `memfd_create()`) after this PR, and `getrandom()` is not available unless the target Android API level is 28 (Android 9) or higher, so `getrandom()` will be detected as available when targeting (only) Android 9 or newer (and other operating systems that support `getrandom()`) after this PR. Related information: https://android.googlesource.com/platform/bionic/+/refs/heads/android15-release/libc/include/sys/mman.h#186 https://android.googlesource.com/platform/bionic/+/refs/heads/android15-release/libc/include/sys/random.h#55 https://android.googlesource.com/platform/bionic/+/refs/heads/android15-release/libc/include/sys/cdefs.h#182927f65caf3/meson.build (L1074)cab3b67cfe/docs/markdown/Compiler-properties.md (does-a-function-exist)Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/13566 Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37630>
`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.