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Hash : 4fae2af0
Author :
Date : 2002-07-01T16:10:35

Handle multiple suffix rules with the same input extension.
For PR automake/37.

* automake.in (suffix_rules_default): New variable.
(suffix_rules): Redefine as a hash of hashes of pairs.
(initialize_per_input): Setup suffix_rules_default from
suffix_rules on first call, an override suffix_rules
with suffix_rules_default on following calls.
(struct) <output_extensions>: New attribute.
(register_language): Set the default for output_extensions.
Call register_suffix_rule for each suffix.
(derive_suffix, handle_languages): Adjust to the new definition
of $suffix.
(register_suffix_rule): New function.
(rule_define): Call register_suffix_rule.
* tests/suffix8.test, tests/suffix9.test, tests/suffix10.test:
New files.
* tests/Makefile.am (TESTS): Add them.

tests/suffix9.test

#! /bin/sh

# Make sure that Automake choose the shorter route between suffixes
# (related to PR/37)

. $srcdir/defs || exit 1

set -e

echo AC_PROG_CC >>configure.in

#  x_ -> y -> c -> o
#   \________/
#
# Automake should follow the bottom route: x_ -> c -> o because
# it is shorter.
#
# It should not take the "-> y ->" route.  We use `y' here so that
# then Automake will complains that YACC is not defined and the test will
# fail when this happens.

cat >Makefile.am << 'END'
bin_PROGRAMS = foo
foo_SOURCES = foo.x_

.x_.y:
	cp $< $@
.x_.c:
	cp $< $@
END

$ACLOCAL
$AUTOMAKE -a

# Idem with the rules the another order.

cat >Makefile.am << 'END'
bin_PROGRAMS = foo
foo_SOURCES = foo.x_

.x_.c:
	cp $< $@
.x_.y:
	cp $< $@
END

$AUTOMAKE -a

kc3-lang/automake/tests/suffix9.test

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tests/suffix9.test