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8002ca7b56
Reported by Daiki Ueno <ueno@gnu.org> in <https://lists.gnu.org/archive/html/bug-gnulib/2020-09/msg00036.html>. * modules/parse-datetime (Makefile.am): Use a phony target and the general idiom for rules that produce multiple files.
84 lines
2.9 KiB
Plaintext
84 lines
2.9 KiB
Plaintext
Description:
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Convert a date/time string to linear time.
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Files:
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doc/parse-datetime.texi
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lib/parse-datetime.h
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lib/parse-datetime.y
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m4/tm_gmtoff.m4
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m4/parse-datetime.m4
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Depends-on:
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bison
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c99
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c-ctype
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stdbool
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gettime
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gettext-h
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intprops
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inttypes
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mktime
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nstrftime
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setenv
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unsetenv
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time
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time_r
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time_rz
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timegm
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verify
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configure.ac:
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gl_PARSE_DATETIME
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Makefile.am:
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# The Automake generated .y.c rule is broken: When executed in a VPATH build,
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# - The .c file gets generated in the build directory. But since it requires
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# special tools to rebuild it, we need to distribute it in the tarballs,
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# and by the GNU Coding Standards
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# <https://www.gnu.org/prep/standards/html_node/Makefile-Basics.html>
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# the file should be generated in the source directory.
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# - The #line numbers in the .c file refer to a nonexistent file once it
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# has been moved from the build directory to the source directory. This
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# leads to error if 'lcov' is used later.
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# Additionally, here we assume GNU Bison and therefore don't need the ylwrap
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# script.
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# Therefore we override this rule.
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# Since this is a rule that produces multiple files, we apply the idiom from
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# <https://lists.gnu.org/archive/html/bug-make/2020-09/msg00008.html>, so that
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# it works also in parallel 'make'.
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generate-parse-datetime:
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$(AM_V_YACC)$(PARSE_DATETIME_BISON) -d $(YFLAGS) $(AM_YFLAGS) $(srcdir)/parse-datetime.y \
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&& test ':' = '$(PARSE_DATETIME_BISON)' || { \
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sed -e 's|".*/parse-datetime\.y"|"parse-datetime.y"|' \
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-e 's|"parse-datetime\.tab\.c"|"parse-datetime.c"|' \
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-e 's|"parse-datetime\.tab\.h"|"parse-datetime-gen.h"|' \
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< parse-datetime.tab.c > parse-datetime.c-tmp \
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&& sed -e 's|".*/parse-datetime\.y"|"parse-datetime.y"|' \
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-e 's|"parse-datetime\.tab\.h"|"parse-datetime-gen.h"|' \
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< parse-datetime.tab.h > parse-datetime-gen.h-tmp \
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&& rm -f parse-datetime.tab.c parse-datetime.tab.h \
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&& mv parse-datetime.c-tmp $(srcdir)/parse-datetime.c \
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&& mv parse-datetime-gen.h-tmp $(srcdir)/parse-datetime-gen.h; \
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}
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.PHONY: generate-parse-datetime
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# The above rule will generate files with time stamp order
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# parse-datetime.y <= parse-datetime.c <= parse-datetime-gen.h.
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parse-datetime.c: parse-datetime.y
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@{ test -f $(srcdir)/parse-datetime.c && test ! $(srcdir)/parse-datetime.c -ot $(srcdir)/parse-datetime.y; } || $(MAKE) generate-parse-datetime
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parse-datetime-gen.h: parse-datetime.c
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@{ test -f $(srcdir)/parse-datetime-gen.h && test ! $(srcdir)/parse-datetime-gen.h -ot $(srcdir)/parse-datetime.c; } || $(MAKE) generate-parse-datetime
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lib_SOURCES += parse-datetime.y
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BUILT_SOURCES += parse-datetime.c parse-datetime-gen.h
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MOSTLYCLEANFILES += parse-datetime.tab.c parse-datetime.tab.h parse-datetime.c-tmp parse-datetime-gen.h-tmp
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MAINTAINERCLEANFILES += parse-datetime.c parse-datetime-gen.h
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EXTRA_DIST += parse-datetime.c parse-datetime-gen.h
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Include:
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"parse-datetime.h"
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License:
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LGPLv2+
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Maintainer:
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Paul Eggert
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