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11095a90f1
I decided this feature was too impacting to make the permanent default behavior. This set of changes makes the default behavior of make the old behavior (no second expansion). If you want second expansion, you must define the .SECONDEXPANSION: special target before the first target that needs it. This set of changes ONLY fixes explicit and static pattern rules to work like this. Implicit rules still have second expansion enabled all the time: I'll work on that next. Note that there is still a backward-incompatibility: now to get the old SysV behavior using $$@ etc. in the prerequisites list you need to set .SECONDEXPANSION: as well.
128 lines
1.5 KiB
Perl
128 lines
1.5 KiB
Perl
# -*-perl-*-
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$description = "Test second expansion in ordinary rules.";
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$details = "";
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# TEST #0: Test handing of '$' in prerequisites with and without second
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# expansion.
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run_make_test(q!
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ifdef SE
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.SECONDEXPANSION:
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endif
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foo$$bar: bar$$baz bar$$biz ; @echo '$@ : $^'
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PRE = one two
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bar$$baz: $$(PRE)
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baraz: $$(PRE)
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PRE = three four
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.DEFAULT: ; @echo '$@'
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!,
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'',
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"\$\nbar\$biz\nfoo\$bar : bar\$baz bar\$biz");
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run_make_test(undef, 'SE=1', "three\nfour\nbariz\nfoo\$bar : baraz bariz");
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# TEST #1: automatic variables.
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#
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run_make_test('
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.SECONDEXPANSION:
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.DEFAULT: ; @echo $@
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foo: bar baz
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foo: biz | buz
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foo: $$@.1 \
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$$<.2 \
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$$(addsuffix .3,$$^) \
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$$(addsuffix .4,$$+) \
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$$|.5 \
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$$*.6
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',
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'',
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'bar
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baz
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biz
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buz
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foo.1
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bar.2
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bar.3
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baz.3
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biz.3
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bar.4
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baz.4
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biz.4
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buz.5
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.6
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');
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# Test #2: target/pattern -specific variables.
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#
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run_make_test('
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.SECONDEXPANSION:
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.DEFAULT: ; @echo $@
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foo.x: $$a $$b
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foo.x: a := bar
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%.x: b := baz
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',
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'',
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'bar
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baz
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');
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# Test #3: order of prerequisites.
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#
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run_make_test('
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.SECONDEXPANSION:
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.DEFAULT: ; @echo $@
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all: foo bar baz
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# Subtest #1
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#
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foo: foo.1; @:
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foo: foo.2
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foo: foo.3
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# Subtest #2
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#
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bar: bar.2
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bar: bar.1; @:
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bar: bar.3
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# Subtest #3
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#
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baz: baz.1
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baz: baz.2
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baz: ; @:
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',
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'',
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'foo.1
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foo.2
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foo.3
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bar.1
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bar.2
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bar.3
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baz.1
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baz.2
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');
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# This tells the test driver that the perl test script executed properly.
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1;
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