"add_headers" generate header files with executable permission

My xmake.lua is:

-- something else --
target("bg")
    set_options("default")
    set_kind("$(kind)")
    add_files("src/bigint.cpp")
    add_headers("src/bigint.h")    -- HERE "add_headers"
    add_defines("BIGINT_FFT_TRIGGER=0x1000000")
target_end()

src/bigint.h is with normal permission, -rw-r--r--, aka 100644 in git.

After building I got build/bigint.h but it is with executable permission, -rwxr-xr-x, aka 100755 in git.

Why the permission has been changed? I do not think header files should be executable. Or it has its special meanings?

The whole repository can be seen at TitanSnow/libBG:xmake

[waruqi]

I have fixed this bug, please checkout the lastest master commit and try it again.

Thanks!