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65 lines
1.8 KiB
Perl
65 lines
1.8 KiB
Perl
# -*-perl-*-
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$description = "Test BSD-style shell assignments (VAR != VAL) for variables.";
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$details = "";
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# TEST 0: Basic shell assignment (!=).
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run_make_test('
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.POSIX:
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demo1!=printf \' 1 2 3\n4\n\n5 \n \n 6\n\n\n\n\'
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demo2 != printf \'7 8\n \'
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demo3 != printf \'$$(demo2)\'
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demo4 != printf \' 2 3 \n\'
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demo5 != printf \' 2 3 \n\n\'
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all: ; @echo "<$(demo1)> <$(demo2)> <$(demo3)> <$(demo4)> <${demo5}>"
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',
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'', "< 1 2 3 4 5 6 > <7 8 > <7 8 > < 2 3 > < 2 3 >\n");
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# TEST 1: Handle '#' the same way as BSD make
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run_make_test('
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foo1!=echo bar#baz
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hash != printf \'\043\'
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foo2!= echo "bar$(hash)baz"
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all: ; @echo "<$(foo1)> <$(hash)> <$(foo2)>"
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',
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'', "<bar> <#> <bar#baz>\n");
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# TEST 2: shell assignment variables (from !=) should be recursive.
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# Note that variables are re-evaluated later, so the shell can output
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# a value like $(XYZZY) as part of !=. The $(XYZZY) will be EVALUATED
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# when the value containing it is evaluated. On the negative side, this
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# means if you don't want this, you need to escape dollar signs as $$.
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# On the positive side, it means that shell programs can output macros
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# that are then evaluated as they are traditionally evaluated.. and that
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# you can use traditional macro evaluation semantics to implement !=.
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run_make_test('
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XYZZY = fiddle-dee-dee
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dollar = $$
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VAR3 != printf \'%s\' \'$(dollar)(XYZZY)\'
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all: ; @echo "<$(VAR3)>"
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',
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'', "<fiddle-dee-dee>\n");
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# TEST 3: Overrides invoke shell anyway; they just don't store the result
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# in a way that is visible.
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run_make_test('
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override != echo abc > ,abc ; cat ,abc
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all: ; @echo "<$(override)>" ; cat ,abc
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',
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'override=xyz', "<xyz>\nabc\n");
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unlink(',abc');
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1;
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