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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.
42 lines
1.4 KiB
Makefile
42 lines
1.4 KiB
Makefile
## Copyright (C) 2020 Free Software Foundation, 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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bistromathicdir = $(docdir)/%D%
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## --------------- ##
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## Bistromathics. ##
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## --------------- ##
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%D%/parse.c: $(dependencies)
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if ENABLE_BISTROMATHIC
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check_PROGRAMS += %D%/bistromathic
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TESTS += %D%/bistromathic.test
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nodist_%C%_bistromathic_SOURCES = %D%/parse.y
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# Don't use gnulib's system headers.
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%C%_bistromathic_CPPFLAGS = \
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-DBISON_LOCALEDIR='"$(localdir)"' \
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-DLOCALEDIR='"$(localdir)"' \
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-I$(top_srcdir)/%D% -I$(top_builddir)/%D%
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%C%_bistromathic_CFLAGS = $(TEST_CFLAGS)
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%C%_bistromathic_LDADD = -lm $(LIBREADLINE) $(LIBINTL)
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endif
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EXTRA_DIST += %D%/bistromathic.test
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dist_bistromathic_DATA = %D%/parse.y %D%/Makefile %D%/README.md
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CLEANFILES += %D%/parse.[ch] %D%/parse.output
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CLEANDIRS += %D%/*.dSYM
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