| 1 | # -*-perl-*-
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| 2 | $description = "Test the call function.\n";
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| 3 |
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| 4 | $details = "Try various uses of call and ensure they all give the correct
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| 5 | results.\n";
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| 6 |
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| 7 | run_make_test(q!
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| 8 | # Simple, just reverse two things
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| 9 | #
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| 10 | reverse = $2 $1
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| 11 |
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| 12 | # A complex 'map' function, using recursive 'call'.
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| 13 | #
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| 14 | map = $(foreach a,$2,$(call $1,$a))
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| 15 |
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| 16 | # Test using a builtin; this is silly as it's simpler to do without call
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| 17 | #
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| 18 | my-notdir = $(call notdir,$(1))
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| 19 |
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| 20 | # Test using non-expanded builtins
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| 21 | #
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| 22 | my-foreach = $(foreach $(1),$(2),$(3))
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| 23 | my-if = $(if $(1),$(2),$(3))
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| 24 |
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| 25 | # Test recursive invocations of call with different arguments
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| 26 | #
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| 27 | one = $(1) $(2) $(3)
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| 28 | two = $(call one,$(1),foo,$(2))
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| 29 |
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| 30 | # Test recursion on the user-defined function. As a special case make
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| 31 | # won't error due to this.
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| 32 | # Implement transitive closure using $(call ...)
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| 33 | #
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| 34 | DEP_foo = bar baz quux
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| 35 | DEP_baz = quux blarp
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| 36 | rest = $(wordlist 2,$(words ${1}),${1})
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| 37 | tclose = $(if $1,$(firstword $1)\
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| 38 | $(call tclose,$(sort ${DEP_$(firstword $1)} $(call rest,$1))))
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| 39 |
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| 40 | all: ; @echo '$(call reverse,bar,foo)'; \
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| 41 | echo '$(call map,origin,MAKE reverse map)'; \
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| 42 | echo '$(call my-notdir,a/b c/d e/f)'; \
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| 43 | echo '$(call my-foreach)'; \
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| 44 | echo '$(call my-foreach,a,,,)'; \
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| 45 | echo '$(call my-if,a,b,c)'; \
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| 46 | echo '$(call two,bar,baz)'; \
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| 47 | echo '$(call tclose,foo)';
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| 48 | !,
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| 49 | "", "foo bar\ndefault file file\nb d f\n\n\nb\nbar foo baz\nfoo bar baz blarp quux \n");
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| 50 |
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| 51 | # These won't work because call expands all its arguments first, before
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| 52 | # passing them on, then marks them as resolved/simple, so they're not
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| 53 | # expanded again by the function.
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| 54 | #
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| 55 | # echo '$(call my-foreach,a,x y z,$$(a)$$(a))'; \
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| 56 | # echo '$(call my-if,,$$(info don't print this),$$(info do print this))'
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| 57 | #
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| 58 | # $answer = "xx yy zz\ndo print this\n";
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| 59 |
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| 60 | # TEST eclipsing of arguments when invoking sub-calls
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| 61 |
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| 62 | run_make_test(q!
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| 63 | all = $1 $2 $3 $4 $5 $6 $7 $8 $9
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| 64 |
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| 65 | level1 = $(call all,$1,$2,$3,$4,$5)
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| 66 | level2 = $(call level1,$1,$2,$3)
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| 67 | level3 = $(call level2,$1,$2,$3,$4,$5)
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| 68 |
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| 69 | all:
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| 70 | @echo $(call all,1,2,3,4,5,6,7,8,9,10,11)
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| 71 | @echo $(call level1,1,2,3,4,5,6,7,8)
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| 72 | @echo $(call level2,1,2,3,4,5,6,7,8)
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| 73 | @echo $(call level3,1,2,3,4,5,6,7,8)
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| 74 | !,
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| 75 | "", "1 2 3 4 5 6 7 8 9\n1 2 3 4 5\n1 2 3\n1 2 3\n");
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| 76 |
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| 77 | # Ensure that variables are defined in global scope even in a $(call ...)
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| 78 |
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| 79 | delete $ENV{X123};
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| 80 |
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| 81 | run_make_test('
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| 82 | tst = $(eval export X123)
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| 83 | $(call tst)
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| 84 | all: ; @echo "$${X123-not set}"
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| 85 | ',
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| 86 | '', "\n");
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| 87 |
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| 88 | 1;
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| 89 |
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| 90 | ### Local Variables:
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| 91 | ### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
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| 92 | ### End:
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