Support `private, public, interface` to improve dependency inheritance like cmake

[waruqi]

Inherit all compiler and linker settings, e.g. add_cflags, add_defines, add_includedirs ..

Roadmap

• add_xxx("", {public = true})
  • private = true (default)
  • public = true (private + public)
  • interface = true (only public)
• add_deps("", {inherit = false})
  • inherit = true (default)
• target:get("defines", {interface = true})
• target:add("defines", "xxx", {public = true})
• target:set("defines", "xxx", {private = true})

References

#291

Examples

target("test")
    set_kind("static")
    add_files("src/*.c")
    add_includedirs("inc", {public = true})

-- inherit includedirs and link libtest.a
target("demo")
    set_kind("binary")
    add_deps("test") 

-- only affect the compilation order 
target("demo2")
    set_kind("binary")
    add_deps("test", {inherit = false})

[orzuk-lmj]

可以也實作這種語法嗎?

target:add("xxx", "yyy", {public = true})

[waruqi]

可以也實作這種語法嗎?

target:add("xxx", "yyy", {public = true})

yes

[waruqi]

I have implemented this feature in dev branch.