how can meson build specific directory

Question

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Assume that above situation, I configured meson build like the code below.

project('tutorial', ['c'], version : '1.0v')


src = files(['file1.c', 'file2.c', 'file3.c'])

executable('tutorial',
        sources : [src],
        c_args : [CFLAGS],
        link_args : [LDFLAGS, LDFLAGS_OUTPUT])

how can i specific directory build using regular expression like as

src = files(['*.c']) or 

or useful meson fuction? (method)? like as

meson.src_dir('src/')

is that possible?

Answer 1

Yes, there is a subdir() function that you can use to "include" folder with another meson.build file.

src = ...

subdir('src')

executable(...)

In that sub-directory you should have separate meson.build file with files():

src += files('a.c', 'b.c')

• just file names, no need adding parent directory here
• you don't need brackets as files function accepts infinite number of arguments
• regular expressions, globbing are not supported by meson - this is to have defined result, i.e. no unexpected or implicit behavior.

PS

Regarding file globbing check this question; apparently there is a workaround by running external shell scripts and using then result, but this is not recommended anyway (and most probably that's the reason why it's not possible with files() ): it wouldn't be possible for meson to notice added files - user needs to remember to re-run meson project build (which is long and not how it's meant to be), not just ninja.