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52ce2a008b
pstate_clear is lacking a prototype. Reported by Ryan https://lists.gnu.org/r/bug-bison/2020-05/msg00101.html Besides, none of the C examples were compiled with the warning flags. * configure.ac (warn_c): Add -Wmissing-prototypes. * data/skeletons/yacc.c (pstate_clear): Make it static. * examples/local.mk (TEST_CFLAGS): New. * examples/c/bistromathic/local.mk, examples/c/calc/local.mk, * examples/c/lexcalc/local.mk, examples/c/mfcalc/local.mk, * examples/c/pushcalc/local.mk, examples/c/reccalc/local.mk, * examples/c/rpcalc/local.mk: Use it. GCC's warn_unused_result is not silenced by a cast to void, so we have to "use" scanf's result. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425 Flex generated code produces too many warnings, including things such as, with ICC: examples/c/lexcalc/scan.c(1088): error #1682: implicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem) 2259 YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), 2260 ^ 2261 2262 I am tired of trying to fix Flex's output. The project does not seem maintained. We ought to avoid it. So, for the time being, don't try to enable warnings with Flex. * examples/c/bistromathic/parse.y, examples/c/reccalc/scan.l: Fix warnings. * doc/bison.texi: Discard scanf's return value to defeat -Werror=unused-result.
100 lines
2.9 KiB
Makefile
100 lines
2.9 KiB
Makefile
## Copyright (C) 2005, 2008-2015, 2018-2020 Free Software Foundation,
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## Inc.
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##
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## This program is free software: you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program. If not, see <http://www.gnu.org/licenses/>.
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## Because some of our examples use
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##
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## %C%_reccalc_SOURCES = %D%/parse.y
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##
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## Automake ships parse.y and parse.c, and possibly parse.h when it
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## "understands" that there is one. This is not what we want: ship only
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## parser.y. Yet we still want to use Automake to compile the sources
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## from parser.y. The easiest seems to use
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##
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## nodist_%C%_reccalc_SOURCES = %D%/parse.y
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##
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## together with
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##
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## dist_reccalc_DATA = %D%/parse.y %D%/scan.l %D%/Makefile %D%/README.md
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##
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## which guarantees that parse.y is indeed shipped.
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dist_noinst_SCRIPTS = %D%/extexi %D%/test
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TEST_LOG_COMPILER = $(SHELL) $(top_srcdir)/%D%/test
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TEST_CFLAGS = \
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$(WARN_CFLAGS) $(WARN_CFLAGS_TEST) $(WERROR_CFLAGS)
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AM_CXXFLAGS = \
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$(WARN_CXXFLAGS) $(WARN_CXXFLAGS_TEST) $(WERROR_CXXFLAGS)
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## ------------ ##
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## Extracting. ##
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## ------------ ##
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doc = $(top_srcdir)/doc/bison.texi
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extexi = $(top_srcdir)/%D%/extexi
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if ENABLE_GCC_WARNINGS
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EXTEXIFLAGS = --synclines
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endif
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extract = VERSION="$(VERSION)" $(PERL) $(extexi) $(EXTEXIFLAGS) $(doc) --
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extracted =
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EXTRA_DIST += $(extracted)
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MAINTAINERCLEANFILES += $(extracted) %D%/extracted.stamp
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%D%/extracted.stamp: $(doc) doc/version.texi $(extexi)
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$(AM_V_GEN)rm -f $@ $@.tmp
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$(AM_V_at)$(MKDIR_P) %D%
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$(AM_V_at)touch $@.tmp
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$(AM_V_at)$(extract) $(extracted)
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$(AM_V_at)mv $@.tmp $@
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$(extracted): %D%/extracted.stamp
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@test -f $@ || rm -f %D%/extracted.stamp
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@test -f $@ || $(MAKE) $(AM_MAKEFLAGS) %D%/extracted.stamp
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## ------ ##
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## Dist. ##
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## ------ ##
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# Ship the stamp file, otherwise it will be recreated, which is what
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# we want to avoid.
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EXTRA_DIST += %D%/extracted.stamp
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# Suppress the #lines from the examples when rolling the tarball, so
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# that regular users have readable examples even before installing
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# Bison.
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dist-hook: examples-unline
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.PHONY: examples-unline
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examples-unline:
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cd $(distdir) && \
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perl -pi -0777 -e 's/#line.*\n//g;s{^ /\*\*/\n}{}mg' $(extracted)
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## ---------- ##
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## Examples. ##
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## ---------- ##
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examplesdir = $(docdir)/examples
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dist_examples_DATA = %D%/README.md
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CLEANDIRS += %D%/*.dSYM
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include %D%/c/local.mk
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include %D%/c++/local.mk
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include %D%/d/local.mk
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include %D%/java/local.mk
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