New features (in development)

fs.copyfile() now has a build_subdir argument

fs.copyfile()'s new build_subdir argument allows creating a file inside a subdirectory of the current build directory.

Added depends kwarg to generator.process()

The generator.process() method now supports specifying depends as a kwarg to extend the list of dependencies for generated files.

Support for Python 3.7, 3.8, and 3.9 dropped

Meson 1.12 is the first version to require Python version 3.10 or greater.

Support for older versions of Python is maintained with bug fixes only for some LTS releases. See the FAQ entry for more information.

Non-default members of Cargo workspaces can now be built

The new keyword argument extra_members to the workspace() method allows configuring non-default members of a Cargo workspace. Previously, non-default members were never used for dependency resolution and could not be built.

meson test now accepts --exclude

meson test has a new --exclude argument to allow skipping named tests. It takes a full test name and can be specified repeatedly. This should help distributions that need to skip tests irrelevant for them or known to be buggy.

werror=true now applies to the linker as well

When werror=true is set, Meson now passes the appropriate fatal-warnings flag to the linker (for example --fatal-warnings for GNU ld, -fatal_warnings for Apple ld, /WX for MSVC link). Previously, werror=true only affected compiler warnings.