| 1 | ## automake - create Makefile.in from Makefile.am
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| 2 | ## Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, 2006
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| 3 | ## Free Software Foundation, Inc.
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| 4 |
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| 5 | ## This program is free software; you can redistribute it and/or modify
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| 6 | ## it under the terms of the GNU General Public License as published by
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| 7 | ## the Free Software Foundation; either version 2, or (at your option)
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| 8 | ## any later version.
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| 9 |
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| 10 | ## This program is distributed in the hope that it will be useful,
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| 11 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | ## GNU General Public License for more details.
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| 14 |
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| 15 | ## You should have received a copy of the GNU General Public License
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| 16 | ## along with this program; if not, write to the Free Software
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| 17 | ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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| 18 | ## 02110-1301, USA.
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| 19 |
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| 20 | ## We want to disable the Yacc rebuild rule when
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| 21 | ## 1. AM_MAINTAINER_MODE is used, and
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| 22 | ## 2. --enable-maintainer-mode is not specified, and
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| 23 | ## 3. parser.c already exist, and
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| 24 | ## 4. parser.y and parser.c are distributed.
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| 25 | ## Point #3 is because `make maintainer-clean' erases parser.c, yet
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| 26 | ## the GNU Coding Standards require that ./configure; make works even
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| 27 | ## after that.
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| 28 | ## Point #4 is because parsers listed in nodist_*_SOURCES are always
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| 29 | ## built on the user's side, so it makes no sense to disable them.
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| 30 | ##
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| 31 | ## Points #1, #2, #3 are solved by unconditionally prefixing the rule
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| 32 | ## with $(am__skipyacc) defined below only when needed.
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| 33 | ##
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| 34 | ## Point #4 requires a condition on whether parser.y/parser.c are
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| 35 | ## distributed or not. We cannot have a generic rule that works in
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| 36 | ## both cases, so we ensure in automake that nodist_ parsers always
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| 37 | ## use non-generic rules.
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| 38 | if %?MAINTAINER-MODE%
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| 39 | if %?FIRST%
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| 40 | @MAINTAINER_MODE_FALSE@am__skipyacc = test -f $@ ||
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| 41 | endif %?FIRST%
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| 42 | endif %?MAINTAINER-MODE%
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| 43 |
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| 44 | ?GENERIC?%EXT%%DERIVED-EXT%:
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| 45 | ?!GENERIC?%OBJ%: %SOURCE%
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| 46 | ?GENERIC? $(am__skipyacc) $(SHELL) $(YLWRAP) %SOURCE% y.tab.c %OBJ% y.tab.h %BASE%.h y.output %BASE%.output -- %COMPILE%
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| 47 | ?!GENERIC??DIST_SOURCE? $(am__skipyacc) \
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| 48 | ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
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| 49 | ?!GENERIC? $(SHELL) $(YLWRAP) `test -f '%SOURCE%' || echo '$(srcdir)/'`%SOURCE% y.tab.c %OBJ% y.tab.h %BASE%.h y.output %BASE%.output -- %COMPILE%
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