#                                                                    -*-perl-*-$description = "Test the call function.\n";$details = "Try various uses of call and ensure they all give the correctresults.\n";open(MAKEFILE, "> $makefile");# The Contents of the MAKEFILE ...print MAKEFILE <<'EOMAKE';# Simple, just reverse two things#reverse = $2 $1# A complex `map' function, using recursive `call'.#map = $(foreach a,$2,$(call $1,$a))# Test using a builtin; this is silly as it's simpler to do without call#my-notdir = $(call notdir,$(1))# Test using non-expanded builtins#my-foreach = $(foreach $(1),$(2),$(3))my-if      = $(if $(1),$(2),$(3))# Test recursive invocations of call with different arguments#one = $(1) $(2) $(3)two = $(call one,$(1),foo,$(2))# Test recursion on the user-defined function.  As a special case make# won't error due to this.# Implement transitive closure using $(call ...)#DEP_foo = bar baz quuxDEP_baz = quux blarprest = $(wordlist 2,$(words ${1}),${1})tclose = $(if $1,$(firstword $1) \		$(call tclose,$(sort ${DEP_$(firstword $1)} $(call rest,$1))))all: ; @echo '$(call reverse,bar,foo)'; \        echo '$(call map,origin,MAKE reverse map)'; \        echo '$(call my-notdir,a/b   c/d      e/f)'; \        echo '$(call my-foreach)'; \        echo '$(call my-foreach,a,,,)'; \        echo '$(call my-if,a,b,c)'; \        echo '$(call two,bar,baz)'; \	echo '$(call tclose,foo)'EOMAKE# These won't work until/unless PR/1527 is resolved.#        echo '$(call my-foreach,a,x y z,$(a)$(a))'; \#        echo '$(call my-if,,$(warning don't print this),ok)'## $answer = "xx yy zz\nok\n";# END of Contents of MAKEFILEclose(MAKEFILE);&run_make_with_options($makefile, "", &get_logfile);$answer = "foo bar\ndefault file file\nb d f\n\n\nb\nbar foo baz\nfoo bar baz blarp quux \n";&compare_output($answer, &get_logfile(1));1;