From 16e08014a193dd5fadf043bcbdfa9f7735115af6 Mon Sep 17 00:00:00 2001
From: Alexandre Duret-Lutz <adl@gnu.org>
Date: Sun, 1 Aug 2004 17:31:22 +0000
Subject: Disable Lex and Yacc rules whenever possible if AM_MAINTAINER_MODE is
 used and maintainer-mode disabled. * automake.in (Automake::struct): Define
 nodist_specific. Set it in languages yacc, yaccxx, lex, and lexxx.
 (register_language): Default nodist_specific to 0. (handle_single_transform):
 Honor nodist_specific. * lib/am/yacc.am (am__skipyacc): Define this in
 maintainer mode. (%EXT%%DERIVED-EXT%, %OBJ%): Use $(am__skipyacc) to disable
 these rules when needed. * lib/am/lex.am (am__skiplex): Define this in
 maintainer mode. (%EXT%%DERIVED-EXT%, %OBJ%): Use $(am__skiplex) to disable
 these rules when needed. * tests/mmodely.test: New file. * tests/pr204.test:
 Augment to check AM_MAINTAINER_MODE and nodist_ parsers. * tests/Makefile.am
 (TESTS): ADd mmodely.test. * doc/automake.texi (Yacc and Lex): Note
 dependence on maintainer mode.

---
 lib/am/lex.am | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'lib/am/lex.am')

diff --git a/lib/am/lex.am b/lib/am/lex.am
index 9ce16f9d0..645cbe6d1 100644
--- a/lib/am/lex.am
+++ b/lib/am/lex.am
@@ -1,5 +1,5 @@
 ## automake - create Makefile.in from Makefile.am
-## Copyright (C) 2001, 2002, 2003  Free Software Foundation, Inc.
+## Copyright (C) 2001, 2002, 2003, 2004  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
@@ -16,17 +16,28 @@
 ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 ## 02111-1307, USA.
 
+## See the comment about am__skipyacc in yacc.am.
+if %?MAINTAINER-MODE%
+if %?FIRST%
+@MAINTAINER_MODE_FALSE@am__skiplex = test -f $@ ||
+endif %?FIRST%
+endif %?MAINTAINER-MODE%
+
 ?GENERIC?%EXT%%DERIVED-EXT%:
 ?!GENERIC?%OBJ%: %SOURCE%
 if %?MORE-THAN-ONE%
-?GENERIC?	$(SHELL) $(YLWRAP) %SOURCE% $(LEX_OUTPUT_ROOT).c %OBJ% -- %COMPILE%
+?GENERIC?	$(am__skiplex) $(SHELL) $(YLWRAP) %SOURCE% $(LEX_OUTPUT_ROOT).c %OBJ% -- %COMPILE%
+?!GENERIC??DIST_SOURCE?	$(am__skiplex) \
 ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
 ?!GENERIC?	$(SHELL) $(YLWRAP) `test -f '%SOURCE%' || echo '$(srcdir)/'`%SOURCE% $(LEX_OUTPUT_ROOT).c %OBJ% -- %COMPILE%
 else !%?MORE-THAN-ONE%
-?GENERIC?	%COMPILE% %SOURCE%
+?GENERIC?	$(am__skiplex) %COMPILE% %SOURCE%
+?!GENERIC??DIST_SOURCE?	$(am__skiplex) \
 ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
 ?!GENERIC?	%COMPILE% `test -f %SOURCE% || echo '$(srcdir)/'`%SOURCE%
 ## Edit out `#line' or `#' directives.
-	sed '/^#/ s|$(LEX_OUTPUT_ROOT)\.c|%OBJ%|' $(LEX_OUTPUT_ROOT).c >%OBJ%
-	rm -f $(LEX_OUTPUT_ROOT).c
+?GENERIC?	$(am__skiplex) \
+?!GENERIC??DIST_SOURCE?	$(am__skiplex)\
+	{ sed '/^#/ s|$(LEX_OUTPUT_ROOT)\.c|%OBJ%|' $(LEX_OUTPUT_ROOT).c >%OBJ%  && \
+	rm -f $(LEX_OUTPUT_ROOT).c; }
 endif !%?MORE-THAN-ONE%
-- 
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