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examples: bistromathic: don't use Flex

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This example will soon use GNU readline, so its scanner should be easy
to use (concurrently) on strings, not streams.  This is not a place
where Flex shines, and anyway, these are examples of Bison, not Flex.
There's already lexcalc and reccalc that demonstrate the use of Flex.

* examples/c/bistromathic/scan.l: Remove.
* examples/c/bistromathic/parse.y (yylex): New.
Adjust dependencies.
This commit is contained in:
Akim Demaille
2020-02-29 12:04:01 +01:00
parent c4a7e7a1ab
commit 535281f0ff
5 changed files with 100 additions and 91 deletions
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22
examples/c/bistromathic/local.mk
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@@ -19,18 +19,16 @@ bistromathicdir = $(docdir)/%D%
## Bistromathics. ##
## --------------- ##
if FLEX_WORKS
check_PROGRAMS += %D%/bistromathic
TESTS += %D%/bistromathic.test
EXTRA_DIST += %D%/bistromathic.test
nodist_%C%_bistromathic_SOURCES = %D%/parse.y %D%/parse.h %D%/scan.l
%D%/calc.c: $(dependencies)
check_PROGRAMS += %D%/bistromathic
TESTS += %D%/bistromathic.test
EXTRA_DIST += %D%/bistromathic.test
nodist_%C%_bistromathic_SOURCES = %D%/parse.y %D%/parse.h
%D%/calc.c: $(dependencies)
# Don't use gnulib's system headers.
%C%_bistromathic_CPPFLAGS = -I$(top_srcdir)/%D% -I$(top_builddir)/%D%
%C%_bistromathic_LDADD = -lm
endif FLEX_WORKS
# Don't use gnulib's system headers.
%C%_bistromathic_CPPFLAGS = -I$(top_srcdir)/%D% -I$(top_builddir)/%D%
%C%_bistromathic_LDADD = -lm
dist_bistromathic_DATA = %D%/parse.y %D%/scan.l %D%/Makefile %D%/README.md
CLEANFILES += %D%/parse.[ch] %D%/scan.c %D%/parse.output
dist_bistromathic_DATA = %D%/parse.y %D%/Makefile %D%/README.md
CLEANFILES += %D%/parse.[ch] %D%/parse.output
CLEANDIRS += %D%/*.dSYM