Setting project version dynamically

[voidtrance]

I am trying to set my project's version based on git tags. According to the project() documentation, the version argument can be a file object that contains the version. Also per the documentation, file objects are created with configure_file(). So, this would mean the following:

ver_file = configure_file(input: 'version.txt', install : false)
project('myproject', 'c', version : ver_file)

However, Meson requires that the first line in the top level meson.build is a project() call.

How is the file argument supposed to be used?

[andy5995]

I got this to work:

project(
    'foobar',
    'c',
    version: configure_file(
        copy: true,
        input: 'version.txt.in',
        output: 'version.txt',
        install: false,
    ),
)

The file version.txt.in contains 0.1.0

It's not an ideal solution but probably there's room for tweaking.

[andy5995]

@voidtrance This is much nicer:

project('foobar', 'c', version: files('version.txt'))

[voidtrance]

Thanks, this work.

Now, if there was a way to make the packaging.version.Version regexp to accept Git's versions (v0.1.0-12-gbaaf41e). The regular expression doesn't match because it wants a + instead of the last dash - v0.1.0-12+gbaaf41e.