makefile - Why `make` executes only the dependency? -

i have following makefile:

compile:     echo run: compile     echo b all: run 

make all has expected effect:

$ make echo a echo b b 

but invoking make executes compile target:

$ make echo a 

why happening?

by default, make runs first target, in case compile: http://www.gnu.org/software/make/manual/html_node/how-make-works.html#how-make-works

if want all default target, list first.