|
|
|
|
---
|
|
|
|
|
short-description: Auto-detection of features like ccache and code coverage
|
|
|
|
|
...
|
|
|
|
|
|
|
|
|
|
# Feature autodetection
|
|
|
|
|
|
|
|
|
|
Meson is designed for high productivity. It tries to do as many things
|
|
|
|
|
automatically as it possibly can.
|
|
|
|
|
|
|
|
|
|
Ccache
|
|
|
|
|
--
|
|
|
|
|
|
|
|
|
|
[Ccache](https://ccache.dev/) is a cache system designed to make
|
|
|
|
|
compiling faster. When you run Meson for the first time for a given
|
|
|
|
|
project, it checks if Ccache is installed. If it is, Meson will use it
|
|
|
|
|
automatically.
|
|
|
|
|
|
|
|
|
|
If you do not wish to use Ccache for some reason, just specify your
|
|
|
|
|
compiler with environment variables `CC` and/or `CXX` when first
|
|
|
|
|
running Meson (remember that once specified the compiler can not be
|
|
|
|
|
changed). Meson will then use the specified compiler without Ccache.
|
|
|
|
|
|
|
|
|
|
Coverage
|
|
|
|
|
--
|
|
|
|
|
|
|
|
|
|
When doing a code coverage build, Meson will check for existence of
|
|
|
|
|
the binaries `gcovr`, `lcov` and `genhtml`. If version 3.3 or higher
|
|
|
|
|
of the first is found, targets called *coverage-text*, *coverage-xml*
|
|
|
|
|
and *coverage-html* are generated. Alternatively, if the latter two
|
|
|
|
|
are found, only the target *coverage-html* is generated. Coverage
|
|
|
|
|
reports can then be produced simply by calling e.g. `ninja
|
|
|
|
|
coverage-xml`. As a convenience, a high-level *coverage* target is
|
|
|
|
|
also generated which will produce all 3 coverage report types, if
|
|
|
|
|
possible.
|
