How to trigger configfile generation?

[davidchisnall]

I am trying to construct a reduced test case from a larger system where a file generated with add_configfiles is generated only during the initial configure step and never during the build (even if the source file is modified). I started with this:

$ cat xmake.lua
target("test")
        set_kind("binary")
        add_files("a.c")
        add_configfiles("foo.in")
        set_configvar("a", "b")
$ cat a.c
int main() {}
$ cat foo.in
${a}

But this doesn't generate the output file at all. What do I need to add to make this work?

[waruqi]

try pass -c to xmake f -c to regenerate it.

[waruqi]

try pass -c to xmake f -c to regenerate it.

[davidchisnall]

Thanks. This seems to generate the config file every time the build is run. This is fine for our use case (where we need it only in the final link) but will be painful for .h files that are included in something early in the build, because now large numbers of things will be rebuilt every build. It would be nice if the config files were rebuilt only if they changed.

[davidchisnall]

Or does it only install the new file if it's changed?

[waruqi]

It would be nice if the config files were rebuilt only if they changed.

It should be like that now, I tested it.

It will generate it when it is changed.

[waruqi]

Or does it only install the new file if it's changed?

yes, now

[waruqi]

I have improved it on dev, it should work.