The Meson Build System
http://mesonbuild.com/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
3.1 KiB
87 lines
3.1 KiB
--- |
|
short-description: Installing targets |
|
... |
|
|
|
# Installing |
|
|
|
By default Meson will not install anything. Build targets can be installed by tagging them as installable in the definition. |
|
|
|
```meson |
|
project('install', 'c') |
|
shared_library('mylib', 'libfile.c', install : true) |
|
``` |
|
|
|
There is usually no need to specify install paths or the like. Meson |
|
will automatically install it to the standards-conforming location. In |
|
this particular case the executable is installed to the `bin` |
|
subdirectory of the install prefix. However if you wish to override the |
|
install dir, you can do that with the `install_dir` argument. |
|
|
|
```meson |
|
executable('prog', 'prog.c', install : true, install_dir : 'my/special/dir') |
|
``` |
|
|
|
Other install commands are the following. |
|
|
|
```meson |
|
install_headers('header.h', subdir : 'projname') # -> include/projname/header.h |
|
install_man('foo.1') # -> share/man/man1/foo.1.gz |
|
install_data('datafile.dat', install_dir : join_paths(get_option('datadir'), 'progname')) # -> share/progname/datafile.dat |
|
``` |
|
|
|
`install_data()` supports rename of the file *since 0.46.0*. |
|
|
|
```meson |
|
# file.txt -> {datadir}/{projectname}/new-name.txt |
|
install_data('file.txt', rename : 'new-name.txt') |
|
|
|
# file1.txt -> share/myapp/dir1/data.txt |
|
# file2.txt -> share/myapp/dir2/data.txt |
|
install_data(['file1.txt', 'file2.txt'], |
|
rename : ['dir1/data.txt', 'dir2/data.txt'], |
|
install_dir : 'share/myapp') |
|
``` |
|
|
|
Sometimes you want to copy an entire subtree directly. For this use case there is the `install_subdir` command, which can be used like this. |
|
|
|
```meson |
|
install_subdir('mydir', install_dir : 'include') # mydir subtree -> include/mydir |
|
``` |
|
|
|
Most of the time you want to install files relative to the install |
|
prefix. Sometimes you need to go outside of the prefix (such as writing |
|
files to `/etc` instead of `/usr/etc`. This can be accomplished by |
|
giving an absolute install path. |
|
|
|
```meson |
|
install_data(sources : 'foo.dat', install_dir : '/etc') # -> /etc/foo.dat |
|
``` |
|
|
|
## Custom install behavior |
|
|
|
Sometimes you need to do more than just install basic targets. Meson makes this easy by allowing you to specify a custom script to execute at install time. As an example, here is a script that generates an empty file in a custom directory. |
|
|
|
```bash |
|
#!/bin/sh |
|
|
|
mkdir "${DESTDIR}/${MESON_INSTALL_PREFIX}/mydir" |
|
touch "${DESTDIR}/${MESON_INSTALL_PREFIX}/mydir/file.dat" |
|
``` |
|
|
|
As you can see, Meson sets up some environment variables to help you write your script (`DESTDIR` is not set by Meson, it is inherited from the outside environment). In addition to the install prefix, Meson also sets the variables `MESON_SOURCE_ROOT` and `MESON_BUILD_ROOT`. |
|
|
|
Telling Meson to run this script at install time is a one-liner. |
|
|
|
```meson |
|
meson.add_install_script('myscript.sh') |
|
``` |
|
|
|
The argument is the name of the script file relative to the current subdirectory. |
|
|
|
## DESTDIR support |
|
|
|
Sometimes you need to install to a different directory than the install prefix. This is most common when building rpm or deb packages. This is done with the `DESTDIR` environment variable and it is used just like with other build systems: |
|
|
|
```console |
|
$ DESTDIR=/path/to/staging/area ninja install |
|
```
|
|
|