[Savannah-users] what's this mean: echo := $(shell echo "welcome")

[Jiongliang Zhang]

Hi,

I see some make.version files, has this kind of sentence:

ifndef MAKE_VERSION
    echo := $(shell echo "welcome...")
endif

if the echo := xxx is variable, but I can't get the value by this sentence:
    $(echo)

so what's the first echo mean?

-- 
Best regards！
Thanks
Jiongliang Zhang