| ## automake - create Makefile.in from Makefile.am |
| ## Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, 2006, 2009 |
| ## Free Software Foundation, Inc. |
| |
| ## This program is free software; you can redistribute it and/or modify |
| ## it under the terms of the GNU General Public License as published by |
| ## the Free Software Foundation; either version 2, or (at your option) |
| ## any later version. |
| |
| ## This program is distributed in the hope that it will be useful, |
| ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
| ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| ## GNU General Public License for more details. |
| |
| ## You should have received a copy of the GNU General Public License |
| ## along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| ## We want to disable the Yacc rebuild rule when |
| ## 1. AM_MAINTAINER_MODE is used, and |
| ## 2. --enable-maintainer-mode is not specified, and |
| ## 3. parser.c already exist, and |
| ## 4. parser.y and parser.c are distributed. |
| ## Point #3 is because `make maintainer-clean' erases parser.c, yet |
| ## the GNU Coding Standards require that ./configure; make works even |
| ## after that. |
| ## Point #4 is because parsers listed in nodist_*_SOURCES are always |
| ## built on the user's side, so it makes no sense to disable them. |
| ## |
| ## Points #1, #2, #3 are solved by unconditionally prefixing the rule |
| ## with $(am__skipyacc) defined below only when needed. |
| ## |
| ## Point #4 requires a condition on whether parser.y/parser.c are |
| ## distributed or not. We cannot have a generic rule that works in |
| ## both cases, so we ensure in automake that nodist_ parsers always |
| ## use non-generic rules. |
| if %?MAINTAINER-MODE% |
| if %?FIRST% |
| @MAINTAINER_MODE_FALSE@am__skipyacc = test -f $@ || |
| endif %?FIRST% |
| endif %?MAINTAINER-MODE% |
| |
| ?GENERIC?%EXT%%DERIVED-EXT%: |
| ?!GENERIC?%OBJ%: %SOURCE% |
| ?GENERIC? %VERBOSE%$(am__skipyacc) $(SHELL) $(YLWRAP) %SOURCE% y.tab.c %OBJ% y.tab.h %BASE%.h y.output %BASE%.output -- %COMPILE% |
| ?!GENERIC? %VERBOSE% \ |
| ?!GENERIC??DIST_SOURCE? $(am__skipyacc) \ |
| ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%. |
| ?!GENERIC? $(SHELL) $(YLWRAP) `test -f '%SOURCE%' || echo '$(srcdir)/'`%SOURCE% y.tab.c %OBJ% y.tab.h %BASE%.h y.output %BASE%.output -- %COMPILE% |
