mirror of
https://git.savannah.gnu.org/git/make.git
synced 2025-02-05 14:07:46 +00:00
bf7f690202
Previously we used the fact that this line ending expanded to "$ " which would then expand to the empty string. This has problems if you enable warnings for undefined variables, so directly implement this special (but documented) trick in the GNU Make parser. As a side-effect this also removes all previous whitespace when in GNU Make mode (not in POSIX mode) just as it would without "$". * src/misc.c (collapse_continuations): Check for "$\" and remove it. * tests/scripts/variables/flavors: Add regression tests including with previous whitespace, and escaped/unescaped "$"
204 lines
3.4 KiB
Perl
204 lines
3.4 KiB
Perl
# -*-perl-*-
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$description = "Test various flavors of make variable setting.";
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$details = "";
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# TEST 0: Recursive
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run_make_test('
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ugh = Goodbye
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foo = $(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Hello\n");
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# TEST 1: Simple
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run_make_test('
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bar = Goodbye
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foo := $(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Goodbye\n");
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# TEST 2: Append to recursive
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run_make_test('
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foo = Hello
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ugh = Goodbye
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foo += $(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Hello Hello\n");
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# TEST 3: Append to simple
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run_make_test('
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foo := Hello
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ugh = Goodbye
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bar = ${ugh}
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foo += $(bar)
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Hello Goodbye\n");
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# TEST 4: Conditional pre-set
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run_make_test('
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foo = Hello
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ugh = Goodbye
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bar = ${ugh}
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foo ?= $(bar)
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Hello\n");
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# TEST 5: Conditional unset
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run_make_test('
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ugh = Goodbye
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bar = ${ugh}
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foo ?= $(bar)
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Hello\n");
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# TEST 6: Simple using POSIX syntax
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run_make_test('
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bar = Goodbye
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foo ::= $(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Goodbye\n");
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# TEST 7: POSIX syntax no spaces
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run_make_test('
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bar = Goodbye
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foo::=$(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Goodbye\n");
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# TEST 8: Append to empty
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run_make_test(q!
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recur =
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recur += foo
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simple :=
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simple += bar
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recur_empty = foo
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recur_empty +=
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simple_empty := bar
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simple_empty +=
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empty_recur =
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empty_recur +=
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empty_simple :=
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empty_simple +=
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all: ; @: $(info recur=/$(recur)/ simple=/$(simple)/ recure=/$(recur_empty)/ simplee=/$(simple_empty)/ erecur=/$(empty_recur)/ esimple=/$(empty_simple)/)
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!,
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'', "recur=/foo/ simple=/bar/ recure=/foo/ simplee=/bar/ erecur=// esimple=//\n");
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# TEST 9: Line continuation
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run_make_test(q!
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recur = $\
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zero $\
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one$$\
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two$$$\
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three
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simple := $\
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four $\
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five$$\
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six$$$\
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seven
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all: d$\
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e$\
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p; @:
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.PHONY: dep
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dep: ; @: $(info recur=/$(recur)/ simple=/$(simple)/)
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!,
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'', "recur=/zeroone\$ two\$three/ simple=/fourfive\$ six\$seven/\n");
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# TEST 9: Line continuation with POSIX
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run_make_test(q!
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.POSIX:
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recur = $\
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zero $\
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one$$\
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two$$$\
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three
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simple := $\
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four $\
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five$$\
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six$$$\
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seven
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all: d$\
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e$\
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p; @:
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.PHONY: dep
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dep: ; @: $(info recur=/$(recur)/ simple=/$(simple)/)
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!,
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'', "recur=/zero one\$ two\$three/ simple=/four five\$ six\$seven/\n");
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# Test POSIX :::=
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# This creates a recursive variable, but it expands the RHS first. Any
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# variable escapes ('$$') are preserved so that this recursive variable can be
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# expanded again without changing its contents.
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run_make_test('
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bar = Goodbye
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foo :::= $(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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',
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'', "Goodbye");
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# POSIX :::= no spaces
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run_make_test(q!
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bar = Goodbye
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foo:::=$(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo $(foo)
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!,
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'', "Goodbye");
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# Variable escapes ('$$') are preserved.
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run_make_test(q!
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bar = Good$$bye
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foo :::= $(bar) $$what
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bar = ${ugh}
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ugh = Hello
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all: ; @echo '$(foo)'
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!,
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'', 'Good$bye $what');
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# Append works as expected
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run_make_test(q!
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bar = Good$$bye
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foo :::= $(bar)
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foo += $$what $(bar)
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bar = ${ugh}
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ugh = Hello
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all: ; @echo '$(foo)'
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!,
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'', 'Good$bye $what Hello');
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1;
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