makefile - make to compare two folders -

i want use makefile compare 2 folders. if 2 folders equal don't anything, if different want create folder. here makefile complaining about:

#bindirexists:=t ifeq "../.build" "../topica" /bin/sh: ifeq: not found make: *** [checkdest] error 127 

the makefile following:

projname=topica top=.. srcdir=src builddir=.build src=topica.cpp executable=topica.exe cc=g++  ################################# #macros: define bindirchk #bindirexists:=$(shell if [ -d '$(top)/$(1)/$(2)/' ]; echo "t"; else echo "f"; fi )     ifeq "$(strip $(top)/$(1))" "$(strip $(top)/$(2))"         echo "t"     else         echo "f"     endif    endef  define mkbuilddirs     @echo creating build directories $(top)/$(1) , $(top)/$(1)/$(2)     $(shell mkdir -p $(top)/$(1) $(top)/$(1)/$(2)) endef  ################################# #main targets , pre-reqs  all: checkdest          #$(cc) $(srcdir)/$(src) -o $(top)/$(builddir)/$(projname)/$(executable)   checkdest:      $(call bindirchk,$(builddir),$(projname))     echo $(bindirexists)     if [ "$(bindirexists)" "f" ];      #   echo test found true         $(shell mkdir -p $(top)/$(1) $(top)/$(1)/$(2))     fi  clean:         rm -rf $(top)/$(builddir)/* 

make doesn't have native method comparing 2 files equality (and thereby 2 directories). you'll have equality-checking in kind of script make call (maybe you're trying already, it's hard tell). , if that, might put conditional , code making new directory in script well; don't gain putting in makefile. scripting problem, , once have script working, calling makefile trivial.

(i recommend perl, hear python too.)