GNU Make environment backpropagation / prerequisite feedback

#don't copy highlighted text, use 'raw paste data' textbox
MAKEFLAGS +=--no-print-directory -Rr

c_t    = "\033[01;31m"
c_pr_n = "\033[01;32m"
c_pr_o = "\033[01;33m"
c_hack = "\033[01;34m"
c_rst  = "\033[00m"

T=a b c d e f g h/i.k
.PHONY: $(T)
$(T):
    $(if $($(@)_PUSHBACK),$(eval $($(@)_PUSHBACK)))
    $(if $($(@)_PUSHBACK),@echo $(c_rst) '>' $(c_t)$@$(c_rst)':' $(c_hack)$(@)_PUSHBACK = $($(@)_PUSHBACK)$(c_rst))
    $(if $(LDFLAGS),@echo $(c_rst) '>' $(c_t)$@$(c_rst)':' $(c_hack)LDFLAGS = $(LDFLAGS)$(c_rst))
    @echo $(c_rst) '>' $(c_t)$@$(c_rst)':'$(if $+, $(c_pr_n)$+)$(if $PIPE>,$(c_rst) '|' $(c_pr_o)$PIPE>)$(c_rst)

.DEFAULT: a
a: b c | d e
c: f
d: g
g: h/i.k
h/i.k_PUSHBACK = LDFLAGS += -lz

### output:
# > b:
# > f:
# > c: f
# > h/i.k: h/i.k_PUSHBACK = LDFLAGS += -lz
# > h/i.k: LDFLAGS = -lz
# > h/i.k:
# > g: LDFLAGS = -lz
# > g: h/i.k
# > d: LDFLAGS = -lz
# > d: g
# > e: LDFLAGS = -lz
# > e:
# > a: LDFLAGS = -lz
# > a: b c | d e