This variant was added to allow introspection before configuring a build
directory. This is useful for IDE integration to allow displaying and/or
setting options for the initial configuration of the build directory.
It also allows showing basic information about the project even if it's
not yet configured or configuring failed.
The project 'name' field in --projectinfo is used inconsistently:
For the top level project it always shows the name configured in
the top level meson.build file. For subprojects it's referring to the
name of the directory the subproject's meson.build is contained in.
To have a consistent output and preserve the existing behavior this adds
the 'descriptive_name' field which always shows the name set in the
project.
To be consistent the 'descriptive_name' field was also added to the
--projectfiles variant that uses an already configured build.
It also extends the information shown with the list of buildsystem-files.
This is currently only implemented in the variant for unconfigured
projects.
This has the adventage that "meson --help" shows a list of all commands,
making them discoverable. This also reduce the manual parsing of
arguments to the strict minimum needed for backward compatibility.
On macOS, we set the install_name for built libraries to
@rpath/libfoo.dylib, and when linking to the library, we set the RPATH
to its path in the build directory. This allows all built binaries to
be run as-is from the build directory (uninstalled).
However, on install, we have to strip all the RPATHs because they
point to the build directory, and we change the install_name of all
built libraries to the absolute path to the library. This causes the
install name in binaries to be out of date.
We now change that install name to point to the absolute path to each
built library after installation.
Fixes https://github.com/mesonbuild/meson/issues/3038
Fixes https://github.com/mesonbuild/meson/issues/3077
With this, the default workflow on macOS matches what everyone seems
to do, including Autotools and CMake. The next step is providing a way
for build files to override the install_name that is used after
installation for use with, f.ex., private libraries when combined with
the install_rpath: kwarg on targets.
Daniel Mensinger