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Versions of flex before 2.5.36 might generate code that results in an "unused variable" warning, when using %option reentrant. Historically we've worked around that by specifying -Wno-error, but that's an unsatisfying solution. The official "fix" for this was just to insert a dummy reference to the variable, so write a small perl script that edits the generated C code similarly. The MSVC side of this is untested, but the buildfarm should soon reveal if I broke that. Discussion: https://postgr.es/m/25456.1487437842@sss.pgh.pa.us
48 lines
1.5 KiB
Makefile
48 lines
1.5 KiB
Makefile
#-------------------------------------------------------------------------
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#
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# Makefile for parser
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#
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# src/backend/parser/Makefile
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#
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#-------------------------------------------------------------------------
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subdir = src/backend/parser
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top_builddir = ../../..
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include $(top_builddir)/src/Makefile.global
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override CPPFLAGS := -I. -I$(srcdir) $(CPPFLAGS)
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OBJS= analyze.o gram.o scan.o parser.o \
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parse_agg.o parse_clause.o parse_coerce.o parse_collate.o parse_cte.o \
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parse_expr.o parse_func.o parse_node.o parse_oper.o parse_param.o \
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parse_relation.o parse_target.o parse_type.o parse_utilcmd.o scansup.o
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include $(top_srcdir)/src/backend/common.mk
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# There is no correct way to write a rule that generates two files.
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# Rules with two targets don't have that meaning, they are merely
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# shorthand for two otherwise separate rules. To be safe for parallel
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# make, we must chain the dependencies like this. The semicolon is
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# important, otherwise make will choose the built-in rule for
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# gram.y=>gram.c.
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gram.h: gram.c ;
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gram.c: BISONFLAGS += -d
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gram.c: BISON_CHECK_CMD = $(PERL) $(srcdir)/check_keywords.pl $< $(top_srcdir)/src/include/parser/kwlist.h
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scan.c: FLEXFLAGS = -CF -p -p
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scan.c: FLEX_NO_BACKUP=yes
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scan.c: FLEX_FIX_WARNING=yes
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# Force these dependencies to be known even without dependency info built:
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gram.o scan.o parser.o: gram.h
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# gram.c, gram.h, and scan.c are in the distribution tarball, so they
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# are not cleaned here.
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clean distclean maintainer-clean:
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rm -f lex.backup
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